Laser deposition device for anti-erosion layer of integrally poured stopper rod and manufacturing method of integrally poured stopper rod with anti-erosion layer

Abstract

The invention belongs to the technical field of integrally-poured stopper anti-erosion layer forming, and discloses a laser deposition device of an integrally-poured stopper anti-erosion layer and a manufacturing method of an integrally-poured stopper with the anti-erosion layer. The laser deposition device for integrally pouring the anti-erosion layer of the stopper rod mainly comprises a pulse laser emitting device I, a pulse laser emitting device II, a laser deposition chamber, a vertical linear module and a stopper rod fixing device, the manufacturing method of the integral pouring stopper rod with the anti-erosion layer comprises the following steps: step 1, processing the steel core; step 2, burdening of a castable; step 3, casting molding of the integral casting stopper rod; 4, manufacturing a laser bombardment target material; 5, laser deposition of an anti-erosion layer of the integrally poured stopper rod; according to the invention, an anti-erosion layer with high compactness is formed on the surface of a casting body of the integral casting stopper rod; the thickness uniformity and integrity of an anti-erosion layer formed on the surface of a casting body of the integral stopper rod are realized; and casting body cracking caused by high-temperature expansion of the steel core of the integral stopper rod is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of forming an anti-corrosion layer of an integrally cast stopper rod, and in particular to a laser deposition device for an anti-corrosion layer of an integrally cast stopper rod and a method for manufacturing an integrally cast stopper rod with an anti-corrosion layer. Background Art

[0002] During the continuous casting of molten steel, the flow of molten steel needs to be controlled to obtain a suitable casting speed and high-quality ingots. The control methods of molten steel flow include slide control and stopper control, which are different technical schools. At present, most steel mills choose stopper control. The advantages of stopper control are good sealing and high flow control accuracy. Stopper rods can be divided into integral stopper rods and sleeve brick stopper rods according to their structures. The integral stopper rod is generally manufactured by isostatic pressing, and the material is Al2O3-C refractory castable. The structure of the integral stopper rod includes a steel core, an anchoring nail set on the surface of the steel core, and a castable (cylindrical with a conical tip) formed by isostatic pressing vibration. The castable formed by isostatic pressing vibration mainly plays the role of protecting the steel core with high temperature erosion resistance and thermal shock resistance, thereby extending the service life of the integral stopper rod to adapt to the process of continuous casting of molten steel.

[0003] In the prior art, the integral stopper rod is characterized by good corrosion resistance and thermal shock resistance, and is suitable for continuous casting of multiple furnaces. However, since the integral stopper rod is formed by isostatic pressing, the density of the castable formed by vibration on the surface of the steel core is poor, which will lead to a decrease in the corrosion resistance and thermal shock resistance of the integral castable on the surface of the steel core, affecting the service life of the integral castable. At the same time, the integral stopper rod is immersed in high-temperature molten steel, and its temperature is generally between 1000℃ and 1500℃. Since the expansion of steel is 20 times that of the stopper rod castable, the steel core is most likely to expand in a high-temperature environment, which further causes the castable casted on the surface of the steel core to crack and cause the castable to fall off. Based on the above-mentioned defects in the prior art, the inventor has developed a laser deposition device and a manufacturing method for the anti-corrosion layer of the integral casting stopper rod, which can well solve the technical problems existing in the prior art. Summary of the invention

[0004] In order to solve the above problems in the prior art, the present invention provides a laser deposition device for the anti-corrosion layer of an integrally cast stopper rod and a method for manufacturing an integrally cast stopper rod with an anti-corrosion layer. The present invention selects a material with the same high purity as the castable on the surface of the steel core of the integral stopper rod as a target material, and the target material is bombarded by a pulsed laser, and directly becomes a plasma to form a plume after heating, melting, and gasification. Finally, the plume is deposited upward to the surface of the castable of the integrally cast stopper rod to form a high-density anti-corrosion layer. The present invention solves the problem that the density of the integral stopper rod castable is not high, and the corrosion resistance and thermal shock resistance are low, and also solves the problem of castable cracking due to the high-temperature expansion of steel.

[0005] The present invention provides a laser deposition device for integrally casting a stopper rod anti-corrosion layer, comprising a bracket, an intermediate plate, and a pulse laser transformer; the bracket is in a hollow square shape, the intermediate plate is fixedly arranged at a position close to the bottom of the bracket, and the pulse laser transformer is fixedly arranged on the upper part of the intermediate plate; a control device is fixedly arranged at a middle position of the upper front side of the bracket; a vacuum molecular pump is fixedly arranged at an upper part of the rear end of the left side of the bracket, and the vacuum molecular pump is used to maintain a vacuum in a laser deposition chamber by vacuuming; a mounting block is symmetrically arranged at a middle position on both sides of the upper part of the bracket, and the mounting block is inclined at 45 degrees; a pulse laser emitting device 1 is fixedly arranged at an upper part of the mounting block on the left side, and a pulse laser emitting device 2 is fixedly arranged at an upper part of the mounting block on the right side; a laser deposition chamber is fixedly arranged at a middle position between the pulse laser emitting device 1 and the pulse laser emitting device 2, and the laser deposition chamber Used for laser bombardment of target materials and deposition of anti-corrosion layers by pulse laser emitting device 1 and pulse laser emitting device 2; a target material placement rack is fixedly arranged at the bottom center position of the laser deposition chamber, and the target material placement rack is used to place mullite target materials; a vertical linear module is fixedly arranged symmetrically front and back at the upper position of the laser deposition chamber, and the vertical linear module is used to enable the stopper rod fixing device to move up and down; a vacuum hole is opened at the left position of the upper rear end of the laser deposition chamber, and the vacuum hole is fixedly connected to the air inlet end of the vacuum molecular pump through a vacuum tube; a fixing block is fixedly arranged symmetrically front and back on the outer bottom surface of the stopper rod fixing device, and the outer side surface of the fixing block is fixedly connected to the inner side of the vertical linear module; an integral stopper rod is fixed at the bottom of the stopper rod fixing device, and the stopper rod fixing device is used to achieve its own intermittent axial radial rotation while allowing a number of integral stopper rods to rotate circumferentially.

[0006] The control device includes a control panel, which is fixed at the upper middle position of the front side of the bracket, an interactive display screen is fixedly arranged at the upper middle position of the control panel, a PLC control module is arranged at the left side of the interactive display screen, a start button is fixedly arranged at the bottom position of the PLC control module, a close button is arranged at the right side position of the start button, and an emergency stop button is arranged at the right side position of the close button; the start button, the close button and the emergency stop button are fixedly connected to the power supply, and the interactive display screen and the PLC control module are fixedly connected to the start button, the close button and the emergency stop button respectively.

[0007] The solenoid valve of the vacuum molecular pump is fixedly connected to the PLC control module through a signal line, and the PLC control module is fixedly connected to the interactive display screen through a signal line. The PLC control module is used to automatically control the opening and closing degree of the solenoid valve of the vacuum molecular pump, and the interactive display screen modularly controls the solenoid valve of the vacuum molecular pump through human-computer interaction.

[0008] The pulse laser emitting device 1 and the pulse laser emitting device 2 are fixedly connected to the pulse laser transformer through a wire, and the pulse laser transformer is fixedly connected to the control switch of the power supply; the pulse laser emitting device 1 and the pulse laser emitting device 2 mainly include a pulse laser emitting power supply, a galvanometer and a field mirror.

[0009] The laser deposition chamber includes a square base, which is a hollow square body with a small upper opening and a large lower opening, and the square base is fixed in the middle position of the upper part of the bracket; the circular cavity is fixedly arranged on the upper part of the square base, and the annular plate is fixedly arranged at the upper position of the circular cavity, and the central circular hole of the annular plate is the opening of the laser deposition chamber; the laser projection windows are symmetrically arranged on the left and right sides of the upper part of the circular cavity, and the field lenses of the pulse laser emitting device 1 and the pulse laser emitting device 2 are respectively aligned with the laser projection windows at 45°.

[0010] The target material placement rack includes support rods, which are symmetrically fixed to the bottom of the square base in front and back and left and right directions, and the round table is fixed to the upper part of the four support rods; the placement table is fixedly arranged at the upper center position of the round table, and a concave cavity for placing the mullite target material is opened in the center of the placement table.

[0011] The vertical linear module includes a fixed seat, which is fixedly arranged on the upper part of the annular plate, and support columns are symmetrically arranged on the upper part of the fixed seat front and back and left and right, and the linear module body is fixedly arranged on the upper part of the four support columns; the servo motor is fixedly arranged at the upper position of the linear module body, and the screw rod is arranged at the inner middle position of the linear module through a bearing, and the upper end of the screw rod passes through the upper body of the linear module and is fixedly connected with the power output shaft of the servo motor; the slide rails are symmetrically fixed on the left and right sides of the inner side of the linear module body, and the left and right sides of the lifting block are clamped on the slide rails, and the middle of the lifting block is matched with the mounting screw rod through a threaded hole; the proximity switch is symmetrically arranged on the inner edge of the bottom of the body of the linear module, and the proximity switch is used to sense the moving position of the limit lifting block, and the proximity switch is fixedly connected to the PLC control module and the interactive display screen through a signal transmission line.

[0012] The outer side surface of the fixing block is fixedly arranged on the inner side surface of the lifting block, and the fixing block fixedly connects the stopper rod fixing device and the vertical linear module to form a freely lifting structure.

[0013] The stopper rod fixing device includes a stepper motor, which is arranged at the upper center position of the follower rotating disk, and the upper part of the driving shaft passes through the center of the follower rotating disk body and is fixedly connected to the power output shaft of the stepper motor; the stepper motor is fixedly connected to the PLC control module through a signal transmission line; the follower rotating disk is disc-shaped; the connecting ring is ring-shaped, and the connecting ring is fixedly arranged at the bottom position of the follower rotating disk, and the diameter of the connecting ring is larger than the diameter of the follower rotating disk; the gear ring body is fixedly arranged at the bottom of the connecting ring, and the gear ring body is an annular structure, and the axial gear ring is fixedly arranged at the inner bottom position of the gear ring body, and the teeth of the axial gear ring face inward. direction; the radial gear ring is fixedly arranged on the upper part of the axial gear ring, the radial gear ring is fixedly connected to the inner side surface of the gear ring body, and the teeth of the radial gear ring face upward; the hydraulic sliding ring is arranged on one side of the drive shaft, and the hydraulic sliding ring is a rotating oil supply joint with a six-branch joint; the air curtain retaining ring is fixedly arranged at the bottom position of the gear ring body, and the air curtain retaining ring is used to continuously blow argon gas to the upper part of the radial rotating mechanism of the stopper rod shaft; the fixing claw is fixedly arranged at the bottom position of the drive shaft, and the fixing claw is used to fix the radial rotating mechanism of the stopper rod shaft; the through hole is opened at the left edge position of the gear ring body, and the through hole is a through hole that vertically passes through the gear ring body.

[0014] The follower rotating disk includes a follower rotating disk body, an axial hole is opened at the center of the follower rotating disk body, a countersink is opened at the center offset position of the follower rotating disk body, and a hydraulic sliding ring is fixedly arranged at the bottom position of the countersink through a flange; a follower groove is opened at the bottom of the follower rotating disk body, and the follower groove is a concave annular groove; a movable block is fixedly arranged at the bottom edge position of the follower rotating disk body, and the movable block is a fan shape that matches the edge of the follower rotating disk body.

[0015] The gas curtain retaining ring includes a retaining ring body, which is a square hollow annular structure. Connecting columns are evenly and fixedly arranged on the upper circumference of the retaining ring body, and the connecting columns are fixed to the bottom edge of the gear ring body; argon holes are opened at the upper left edge of the retaining ring body, and the argon holes are connected to the inside of the retaining ring body; exhaust holes are evenly opened on the inner circular end face of the retaining ring body, and the exhaust holes are used to evenly discharge the argon gas in the retaining ring body and form deposits for shielding the target material from laser bombardment; the argon holes and the through holes are arranged in correspondence up and down, the lower end of the argon gas delivery pipe passes through the through hole and is fixedly connected to the argon holes, and the upper end of the argon gas delivery pipe is fixedly connected to the argon gas tank through the argon gas valve.

[0016] The fixing claw comprises a fixing claw body, which is circular in shape. An axis mounting hole is provided at the center of the fixing claw body. A fixing body is evenly arranged around the circumference of the fixing claw body and is strip-shaped. A plug rod shaft radial rotation mechanism is fixedly arranged at the outer end of each fixing body.

[0017] The radial rotation mechanism of the plug rod shaft includes a follow-up slider, the follow-up slider is slidably mounted in the follow-up groove, the upper part of the connecting shaft is fixedly arranged at the bottom center of the follow-up slider, the lower part of the connecting shaft is fixedly connected to the inner side end of the connecting plate, the hinge shaft passes through the outer end of the connecting plate and is hinged and fixed to the upper part of the fixed body, and the hinge shaft through-hole is opened in the center of the hinge shaft and extends to the lower position of the fixed body; the hydraulic cylinder is installed in the hinge shaft through-hole through the fixing flange, and the telescopic rod of the hydraulic cylinder extends to the lower position of the fixed body; the suspension is vertically fixed to the bottom of the outer end of the fixed body, the square body is installed at the bottom position of the suspension, and is hinged and fixed to the suspension through a pin shaft; the bottom thread of the telescopic rod of the hydraulic cylinder is screwed and tightened with a fixed head, the mounting groove is opened at the bottom position of the fixed head, the fixing cylinder is installed in the mounting groove, and the fixing cylinder and the fixed head are hinged and fixed by a pin shaft, the upper end of the connecting rod is fixed to the middle position of the outer side of the fixing cylinder, and the lower end of the connecting rod is fixed to the middle of the hinge cylinder; the hinge plate is The hinge plate is symmetrically arranged, and the hinge plate is arc-shaped. The hinge cylinder is installed on the upper part of the symmetrically arranged hinge plate, and the hinge plate and the hinge cylinder are fixedly hinged by a pin shaft, and the lower end of the hinge plate is fixed to the outer side surface of the square body; the upper part of the short shaft is fixedly arranged at the bottom of the square body, and the lower part of the short shaft passes through the upper center of the fixed disk and extends to the lower part of the fixed disk, and the inner ring of the slewing bearing is fixedly arranged at the lower end of the short shaft; the radial driven gear is fixedly arranged on the lower outer ring of the slewing bearing, and the radial rotating shaft is arranged on the outer edge of the fixed disk through the inner ring of the bearing, the upper gear is fixedly arranged at the upper end of the radial rotating shaft, and the lower gear is fixedly arranged at the lower end of the radial rotating shaft, and the lower gear is meshed with the radial driven gear; the axial driven gear is a boss-shaped, and the axial driven gear is fixed at the bottom of the radial driven gear, and the stopper rod fixing head is fixedly arranged at the bottom center of the axial driven gear, and a screw hole is opened at the bottom center of the stopper rod fixing head, and the screw hole diameter is matched with the screw head diameter to be tightened and fixed; the axial driven gear is meshed with the axial gear ring for transmission.

[0018] The upper air inlet end of the hydraulic sliding ring is fixedly connected to the solenoid valve oil valve of the hydraulic station through a hydraulic oil pipe, the solenoid valve oil valve of the hydraulic station is fixedly connected to the PLC control module through a signal transmission line, and the PLC control module is fixedly connected to the interactive display screen; the lower six branch joints of the hydraulic sliding ring are fixedly connected to the hydraulic cylinder of the radial rotation mechanism of the plug rod shaft on each fixed body.

[0019] The integral stopper rod comprises a steel core which is a hollow structure. A screw head is provided on the upper part of the steel core. Anchor nails are fixed evenly and equidistantly around the outer surface of the steel core. The casting body is formed by isostatic casting and vibration molding in a molding mold. The screw head is tightened and fixed in a screw hole at the bottom of the stopper rod fixing head.

[0020] The process of laser depositing the anti-corrosion layer on the surface of the integrally cast stopper rod casting body by using the laser deposition device of the anti-corrosion layer of the integrally cast stopper rod is as follows: Step 1. Placement of mullite target: First, the operator clicks the start button of the vertical linear module symmetrically arranged before and after the start of the interactive display screen of the control device. At this time, the PLC control module sends a start control command to the servo motor. The rotation of the servo motor drives the screw to rotate. The screw engages with the wire hole of the lifting block to make the lifting block rise along the slide rail. The lifting action of the lifting block fixes the stopper rod through the fixed block; then the round mullite target is lifted and placed in the concave cavity of the target placement rack through the opening of the laser deposition chamber.

[0021] Step 2. Fixing of the integral stopper rod: align the screw head of the integral stopper rod after casting with the screw hole of the radial rotation mechanism of the stopper rod shaft, and tighten it by meshing the screw head with the screw hole to fix the integral stopper rod vertically; at the same time, the operator clicks the descending button of the vertical linear module, and the PLC control module sends a start control command to the servo motor, and uses the descending action of the vertical linear module to lower the stopper rod fixing device to the initial position (the stopper rod fixing device penetrates into the interior of the opening of the laser deposition chamber).

[0022] Step 3. Preparation before laser deposition of the anti-corrosion layer: The operator presses the start button on the control device to put the control device, the vertical linear module, and the stopper rod fixing device into standby mode; at the same time, turn on the power switch of the pulse laser transformer to put the pulse laser emitting device 1 and the pulse laser emitting device 2 into working mode; at the same time, put the vacuum molecular pump into working mode and the laser deposition chamber into a vacuum state; and open the valve of the argon tank to put the air curtain retaining ring into an argon blowing state.

[0023] Step 4: Laser deposition of an anti-corrosion layer on the surface of the integral stopper rod castable: the operator clicks the start button of the stepper motor of the stopper rod fixing device on the interactive display screen, and the PLC control module sends a control instruction to the stepper motor to start rotation, and the stepper motor rotates clockwise at a uniform speed. The rotation of the stepper motor drives the drive shaft to rotate clockwise at a uniform speed, and the drive shaft drives the fixed claw to rotate clockwise at a uniform speed. At this time, the follower slider of the radial rotation mechanism of the stopper rod shaft rotates in the follower groove of the follower rotating disk, and the articulation of the follower slider, the connecting shaft and the connecting plate with the articulation shaft of the fixed claw fixing body is utilized to realize the uniform clockwise rotation of the integral stopper rod at the bottom of the six radial rotation mechanisms of the stopper rod shaft in the circumferential direction. At the same time, through the meshing transmission action of the axial driven gear and the axial gear ring, the axial The driven gear generates counterclockwise uniform rotation, and with the cooperation of the axial driven gear and the slewing bearing, the axial self-rotation of the six integral stopper rods at the bottom of the six stopper rod shaft radial rotation mechanisms is realized at a uniform counterclockwise speed; when the six integral stopper rod shafts rotate themselves axially for a certain period of time (the PLC control module pre-sets the integral stopper rod shaft self-rotation time), the PLC control module sends an opening control command to the solenoid valve oil valve of the hydraulic cylinder of the stopper rod shaft radial rotation mechanism, and the hydraulic oil pipe simultaneously transports the hydraulic oil to the hydraulic cylinder of each stopper rod shaft radial rotation mechanism through the countersunk hole, the hydraulic sliding ring, and the six branch joints on the hydraulic sliding ring. The telescopic rod of the hydraulic cylinder extends in the through hole of the articulated shaft, pushing the fixed head to move downward, and as the fixed head moves downward through the installation groove The hinged fixing action of the fixed cylinder and the connecting rod pushes the connecting rod to swing outward. At the same time, under the hinged linkage action of the hinged plate, the hinged cylinder and the connecting rod, the square body is flipped outward with the pin as the center. The flipping of the square body drives the short shaft, the fixed plate, the slewing bearing, the radial driven gear, the radial rotating shaft, the bearing, the upper gear, the lower gear, the axial driven gear, and the stopper rod fixing head to flip outward 90° (the whole stopper rod is in a radial horizontal state). At this time, the upper gear on the radial rotating shaft is meshed with the radial gear ring for transmission (the axial driven gear is separated from the axial gear ring, and the whole stopper rod stops its axial self-rotation). Driven by the circumferential uniform clockwise rotation of the six fixed bodies of the fixed claw, the upper gear produces a uniform counterclockwise rotation. The uniform counterclockwise rotation of the upper gear is transmitted through the radial rotation The rotation of the shaft with the center of the bearing drives the lower gear to rotate counterclockwise at a uniform speed. At this time, the transmission meshing action of the lower gear and the radial driven gear, and the rotation coordination of the slewing bearing and the radial driven gear realize the counterclockwise uniform rotation of the integral stopper rod in the radial horizontal state. At the same time, the pulse laser emitting device 1 and the pulse laser emitting device 2 irradiate the mullite target material with pulsed quantitative energy laser through the laser projection window of the laser deposition chamber. After heating, melting and gasification, plasma plume is directly generated on the surface of the mullite target material. This plasma plume is transported vertically upward. When the plume contacts the casting body surface of the integral stopper rod, it is deposited upward to the casting body surface of the integral casting stopper rod to form an in-situ mullite anti-corrosion layer with high density.Cool naturally in the laser deposition chamber for 6 to 8 hours, use the vertical linear module to lift the stopper rod fixing device, and loosen and remove the integral stopper rod after the laser deposited in-situ mullite anti-corrosion layer on the casting body surface of the integral casting stopper rod. ;

[0024] The present invention provides a method for manufacturing an integrally cast stopper rod with an anti-corrosion layer: Step 1: Processing of steel core: Use hollow steel pipe as steel core, process screw head on the upper part of steel pipe, weld V-shaped anchor nails evenly and equidistantly on the circumferential surface of steel core; finally, repeatedly apply organic asphalt on the surface of steel core, the thickness of organic asphalt is 0.2mm~0.5mm.

[0025] Step 2, ingredients of castable: castable composition is calculated by weight percentage, 10%~25% of fused quartz with a particle size of 7mm~3mm, 25%~35% of mullite with a particle size of 3mm~1mm, 15%~20% of mullite with a particle size of 1mm~0mm, 20%~25% of mullite with a particle size of 0.088mm~0mm, and 10%~15% of composite ultrafine powder; Step 3: Casting of integral casting stopper rod: add 8.0% to 10.0% of the total amount of silica sol solution during casting; mix in a mixer, put the steel core into the center of the mold, cast the material cloth and perform isostatic pressing and vibration molding, and demold after 1 day; the baking temperature of the demolded stopper rod is controlled at 350°C to 450°C, and bake for 12h to 24h to form an integral casting body; Step 4: Preparation of laser bombardment target: Alumina powder and silicon oxide powder with a fineness of less than 10 microns and a ratio of 2:1 are co-grinded for 1h to 5h, and sintered at a high temperature of 1000℃ to 1500℃ to form a round in-situ mullite target with a purity of 99.99999%; Step 5. Laser deposition of the anti-corrosion layer of the integrally cast stopper rod: 1. Placement of the mullite target: First, the operator clicks the start button of the vertical linear module symmetrically arranged before and after the start of the interactive display screen of the control device. At this time, the PLC control module sends a start control command to the servo motor. The rotation of the servo motor drives the screw rod to rotate. The screw rod engages with the wire hole of the lifting block to make the lifting block rise along the slide rail. The lifting action of the lifting block lifts the stopper rod fixing device through the fixing block; then the round mullite target is lifted and placed in the concave cavity of the target placement rack through the opening of the laser deposition chamber; 2. Fixing of the integral stopper rod : Align the screw head of the integral stopper rod after casting with the screw hole of the radial rotation mechanism of the stopper rod shaft, and tighten it by meshing the screw head with the screw hole to fix the integral stopper rod vertically; at the same time, the operator clicks the descending key of the vertical linear module, and the PLC control module sends a start control command to the servo motor. The stopper rod fixing device is lowered to the initial position by the descending action of the vertical linear module. When the proximity switch senses the lifting block, the proximity switch sends an analog signal to the PLC control module. After receiving the position signal of the proximity switch, the PLC control module sends a control command to stop the rotation to the servo motor of the vertical linear module. At this time, the stopper rod is fixed. The fixing device penetrates into the interior of the laser deposition chamber opening; 3. Laser deposition of the anti-corrosion layer on the surface of the integral stopper rod castable: First, the operator presses the start button on the control device to put the control device, the vertical linear module, and the stopper rod fixing device in standby mode; at the same time, turn on the power switch of the pulse laser transformer to put the pulse laser emitting device 1 and the pulse laser emitting device 2 in working mode; at the same time, put the vacuum molecular pump in working mode and the laser deposition chamber in vacuum mode; and open the valve of the argon gas tank to put the air curtain retaining ring in the argon blowing state; through the PLC control module, the axial gear ring, the radial gear ring and the radial rotation of the stopper rod shaft The intermittent linkage control of the rotating mechanism realizes the uniform circumferential rotation of the six integral stopper rods while realizing the intermittent axial and radial rotation of the integral stopper rod itself; at the same time, the pulse laser emitting device 1 and the pulse laser emitting device 2 irradiate the mullite target material with pulsed quantitative energy laser through the laser projection window of the laser deposition chamber, and directly generate plasma plume glow groups on the surface of the mullite target material after heating, melting and gasification. The plasma plume is transported vertically upward. When the plume glow group contacts the casting body surface of the integral stopper rod, it is deposited upward to the casting body surface of the integral casting stopper rod to form an in-situ mullite corrosion-resistant layer with high density.

[0026] In step 2, the composite ultrafine powder is aluminum oxide powder and silicon oxide powder, the ratio of aluminum oxide powder to silicon oxide powder is 2:1, and a co-grinding process is performed for 1h to 5h, and the fineness of the composite ultrafine powder is less than 10 microns.

[0027] Among them, in step one, a hollow steel pipe is used as the steel core, and at the same time, a screw head is processed on the upper part of the steel pipe, and V-shaped anchor nails are evenly welded on the circumferential surface of the steel core; finally, organic asphalt is repeatedly applied on the surface of the steel core for many times, and the thickness of the organic asphalt is 0.2㎜~0.5㎜. The above-mentioned evenly welded V-shaped anchor nails on the circumferential surface of the steel core can improve the bonding strength between the steel core and the cast body. The main purpose of repeatedly applying organic asphalt on the surface of the steel core is: on the one hand, the viscosity of the organic asphalt can be used to improve the firmness of the adhesion of the cast body; on the other hand, when the integral stopper rod formed by the casting is baked, the asphalt is burned off by high temperature to form a physical gap. When the integral stopper rod is under the flow control condition, the expansion space is reserved for the high-temperature expansion of the steel core, which can effectively prevent the cracking of the cast body caused by the high-temperature expansion of the steel core of the integral stopper rod.

[0028] In step 2, the composition of the castable is calculated by weight percentage, and the fused quartz with a particle size of 7mm~3mm is added by 10%~25%, the mullite with a particle size of 3mm~1mm is added by 25%~35%, the mullite with a particle size of 1mm~0mm is added by 15%~20%, the mullite with a particle size of 0.088mm~0mm is added by 20%~25%, and the composite ultrafine powder is added by 10%~15%. The raw materials of the above castables are selected from fused quartz and mullite, and their excellent thermal shock resistance is utilized. Because according to the specific high-temperature working environment of the integral stopper rod (the integral stopper rod needs to be inserted into the molten steel in the tundish), the castable raw materials have excellent thermal shock resistance.

[0029] In step three, a baking temperature of 350° C. to 450° C. is used as a baking process condition. This temperature can burn off the organic asphalt coated on the steel core, thereby forming an expansion gap for thermal expansion of the steel core.

[0030] In step 4, the alumina powder and the silica powder can be mixed evenly and differentially through the co-grinding process, so that they can fully react in a high temperature environment of 1000°C to 1500°C to generate more in-situ mullite phase, thereby improving the high temperature strength and thermal shock resistance of the anti-corrosion layer.

[0031] In step 5, by using the laser deposition device for the anti-corrosion layer of the integrally cast stopper rod, under the laser deposition process conditions of maintaining vacuum, on the one hand, the target material is bombarded with pulsed laser, and directly becomes plasma to form plume groups after heating, melting and gasification, and finally the plume groups are deposited upward to the surface of the cast material of the integrally cast stopper rod to form a high-density anti-corrosion layer. On the other hand, by rotating the integral stopper rod circumferentially and coordinating the intermittent uniform rotation of the axis radial direction of the integral stopper rod, the thickness uniformity and integrity of the anti-corrosion layer formed on the surface of the cast body of the integral stopper rod are ensured.

[0032] In step 2, through the co-grinding process, on the one hand, the aluminum oxide powder and the silicon oxide powder can be differentially and evenly mixed, so that they can fully react in a high temperature environment of 1000°C to 1500°C, and more in-situ mullite phases are generated on the surface of the casting body of the integral stopper rod. On the other hand, the service life of the integral stopper rod is extended by the combined effect of the in-situ mullite phase of the casting body and the in-situ mullite phase of the anti-corrosion layer on the surface of the casting body.

[0033] Beneficial effects of the present invention: 1. Through the setting of the laser deposition device of the anti-corrosion layer of the integral casting stopper rod, the target material is bombarded by pulse laser, and it is directly transformed into plasma to form a plume after heating, melting and gasification. Finally, the plume is deposited upward to the casting body surface of the integral casting stopper rod to form a highly dense anti-corrosion layer.

[0034] 2. The thickness uniformity and integrity of the anti-corrosion layer formed on the casting surface of the integral stopper rod are ensured by the circumferential rotation of the integral stopper rod and the intermittent uniform rotation of the axial radial direction of the integral stopper rod.

[0035] 3. By brushing organic asphalt on the surface of the steel core of the integral stopper rod, when the integral stopper rod is baked and cast, the asphalt is burned away by high temperature to form a physical gap. When the integral stopper rod is under flow control conditions, expansion space is reserved for the high-temperature expansion of the steel core, which can effectively prevent the cracking of the casting body caused by the high-temperature expansion of the steel core of the integral stopper rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 For the present invention Figure 1 Enlarged view of the neutral linear module; Figure 3 is a cross-sectional view of the laser deposition chamber of the present invention; Figure 4 is a cross-sectional view of the stopper rod fixing device of the present invention; Figure 5 An exploded view of the stopper rod fixing device of the present invention; Figure 6 It is a structural schematic diagram of the stepping motor, driving shaft, follower slider, and stopper shaft radial rotation mechanism of the present invention; Figure 7 It is a schematic structural diagram of the stopper rod shaft radial rotation mechanism of the present invention; Figure 8 It is a partial enlarged view of the stopper rod shaft radial rotation mechanism of the present invention; Fig. 9 It is a structural schematic diagram of the air curtain retaining ring of the present invention; Fig.10 It is a structural schematic diagram of the integral stopper rod of the present invention; Fig.11 It is a test performance comparison diagram of the integral stopper rod in the prior art, which is Al2O3-C refractory castable, mullite and fused silica castable (casting body), and mullite and fused silica castable (casting body) + anti-corrosion layer; Markings in the figure: 1. bracket, 2. middle plate, 3. pulse laser transformer, 4. control device, 41. control board, 42. interactive display screen, 43. PLC control module, 44. start button, 45. close button, 46. emergency stop button, 5. vacuum molecular pump, 6. mounting block, 7. pulse laser emission device 1, 8. pulse laser emission device 2, 9. laser deposition chamber, 91. square base, 92. circular cavity, 93. ring plate, 94. opening, 95. laser projection window, 10. target material placement rack, 101. support rod, 102. round table, 103. placement table, 104. concave cavity, 11. mullite target, 12. vertical Linear module, 121, fixed seat, 122, support column, 123, linear module, 124, servo motor, 125, lead screw, 126, slide rail, 127, lifting block, 128, proximity switch, 13, vacuum hole, 14, fixed block, 15, plug rod fixing device, 151, stepping motor, 152, drive shaft, 153, follow-up rotating disk, 1531, follow-up rotating disk body, 1532, shaft hole, 1533, countersunk hole, 1534, follow-up groove, 1535, loose block, 154, connecting ring, 155, gear ring body, 156, axial gear ring, 157, radial gear ring, 158, hydraulic sliding ring, 159, air curtain retaining ring, 15 91. retaining ring body, 1592. connecting column, 1593. argon hole, 1594. exhaust hole, 1510. fixing claw, 15101. fixing claw body, 15102. center disc, 15103. shaft mounting hole, 15104. fixing body, 1511. main bearing seat, 1512. through hole, 1513. radial rotation mechanism of plug rod shaft, 15131. follow-up slider, 15132. connecting shaft, 15133. connecting plate, 15134. articulated shaft, 15135. articulated shaft through hole, 15136. hydraulic cylinder, 15137. suspension, 15138. square body, 15139. fixing head, 151310. installation Groove, 151311, fixed cylinder, 151312, connecting rod, 151313, hinged plate, 151314, hinged cylinder, 151315, pin shaft, 151316, short shaft, 151317, fixed plate, 151318, slewing bearing, 151319, radial driven gear, 151320, radial rotating shaft, 151321, bearing, 151322, upper gear, 151323, lower gear, 151324, axial driven gear, 151325, stopper rod fixing head, 151326, screw hole, 16, integral stopper rod, 161, steel core, 162, screw head, 163, anchor nail, 164, casting body. DETAILED DESCRIPTION

[0037] The present invention is further described below in conjunction with specific examples. These examples are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0038] The present invention provides a laser deposition device for integrally casting an anti-corrosion layer of a stopper rod: like Figure 1 As shown, the pulse laser transformer 3 is fixedly arranged on the upper part of the middle plate 2, the pulse laser emitting device 1 7 and the pulse laser emitting device 2 8 are fixedly connected to the pulse laser transformer 3 through a wire, and the pulse laser transformer 3 is fixedly connected to the control switch of the power supply. The above-mentioned setting of the pulse laser transformer 3, on the one hand, satisfies the power supply voltage requirement of the pulse laser emitting device 1 7 and the pulse laser emitting device 2 8 for sending pulse lasers; on the other hand, when the pulse laser emitting device 1 7 and the pulse laser emitting device 2 8 quantitatively bombard the surface of the mullite target 11, it is easy to form a density of 10 in the range of 1 to 10 microns. 16 ~10 21 cm / s dense mullite plasma plume glow group, thereby forming an in-situ mullite corrosion-resistant layer with high density on the surface of the integral stopper rod 16 casting body 164.

[0039] like Figure 1 As shown, the control device 4 is fixedly arranged at the middle position of the upper front side of the bracket 1, and the control device 4 includes a control panel 41, the control panel 41 is fixed at the middle position of the upper front side of the bracket 1, the interactive display screen 42 is fixedly arranged at the middle position of the upper part of the control panel 41, the PLC control module 43 is arranged at the left side of the interactive display screen 42, the start button 44 is fixedly arranged at the bottom position of the PLC control module 43, the close button 45 is arranged at the right side position of the start button 44, and the emergency stop button 46 is arranged at the right side position of the close button 45; the start button 44, the close button 45 and the emergency stop button 46 are fixedly connected to the power supply, and the interactive display screen 42 and the PLC control module 43 are fixedly connected to the start button 44, the close button 45 and the emergency stop button 46 respectively.

[0040] The above-mentioned setting of the PLC control module 43, on the one hand, realizes the automatic control of the vacuum molecular pump 5, the servo motor 124 of the vertical linear module 12, the stepper motor 151, and the hydraulic cylinder 15136 of the stopper rod shaft radial rotation mechanism 1513; on the other hand, through the intermittent linkage control of the PLC control module 43, the axial gear ring 156, the radial gear ring 157 and the stopper rod shaft radial rotation mechanism 1513, the six integral stopper rods 16 can rotate at a uniform speed in the circumferential direction, and the integral stopper rod 16 itself can be intermittently rotated in the axial and radial directions.

[0041] like Figure 1As shown, the vacuum molecular pump 5 is fixedly arranged at the upper rear end of the left side of the bracket 1, and the vacuum molecular pump 5 is used to maintain vacuum in the laser deposition chamber 9 by evacuating the vacuum; the solenoid valve of the vacuum molecular pump 5 is fixedly connected to the PLC control module 43 through a signal line, and the PLC control module 43 is fixedly connected to the interactive display screen 42 through a signal line, and the PLC control module 43 is used to automatically control the opening and closing degree of the solenoid valve of the vacuum molecular pump 5, and the interactive display screen 42 modularly controls the solenoid valve of the vacuum molecular pump 5 through human-computer interaction.

[0042] The above-mentioned automatic linkage control between the vacuum molecular pump 5 and the PLC control module 43, with the interactive display screen 42 as the human-machine interface, realizes the vacuum degree of the laser deposition chamber 9 when the pulse laser deposits the mullite anti-corrosion layer, which can prevent the pulse laser from bombarding the surface of the mullite target 11 and produce an oxidation reaction; thereby improving the purity of the mullite anti-corrosion layer.

[0043] like Figure 1 As shown, the mounting block 6 is symmetrically arranged at the middle position of the left and right sides of the upper part of the bracket 1, and the mounting block 6 is inclined at 45 degrees; the pulse laser emitting device 1 7 is fixedly arranged on the upper part of the mounting block 6 on the left, and the pulse laser emitting device 2 8 is fixedly arranged on the upper part of the mounting block 6 on the right.

[0044] By setting the mounting block 6 at a 45° inclination, the pulse laser emitting device 1 7 and the pulse laser emitting device 2 8 are set at 45° relative to the laser deposition chamber 9. Under the joint action of the pulse laser emitting device 1 7 and the pulse laser emitting device 2 8 bombarding the mullite target 11, on the one hand, the unit area density of the plume clusters formed by the mullite target 11 is increased, thereby improving the density of the mullite anti-corrosion layer; on the other hand, the amount of plasma bombarded by the pulse laser on the mullite target 11 is increased, thereby improving the deposition efficiency of the mullite anti-corrosion layer on the surface of the integral stopper rod 16 casting body 164.

[0045] like Figure 1 As shown in or 3, the laser deposition chamber 9 is fixedly arranged in the middle position of the pulse laser emitting device 1 7 and the pulse laser emitting device 2 8, and the laser deposition chamber 9 is used for the pulse laser emitting device 1 7 and the pulse laser emitting device 2 8 to perform laser bombardment on the target material and deposit the anti-corrosion layer; the laser deposition chamber 9 includes a square base 91, and the square base 91 is a hollow square body with a small upper opening and a large lower opening, and the square base 91 is fixed in the upper middle position of the bracket 1; the circular cavity 92 is fixedly arranged on the upper part of the square base 91, and the annular plate 93 is fixedly arranged at the upper position of the circular cavity 92, and the central circular hole of the annular plate 93 is the opening 94 of the laser deposition chamber 9.

[0046] The above-mentioned square base 91 is provided, on the one hand, to provide a fixed installation platform for the target material placement rack 10 ; on the other hand, it improves the stable support effect on the circular cavity 92 .

[0047] The above-mentioned setting of the circular cavity 92, on the one hand, utilizes the structural characteristics of the circular cavity 92 to provide a space for the upward vertical transportation and aggregation of the plume light clusters formed after the pulse laser bombards the surface of the mullite target 11; on the other hand, with the cooperation of the vacuum molecular pump 5, it is easy to quickly form a vacuum degree suitable for the pulse laser deposition of the anti-corrosion layer in the circular cavity 92.

[0048] The above-mentioned arrangement of the annular plate 93, on the one hand, provides a stable installation platform for the installation and fixation of the vertical linear module 12; on the other hand, by utilizing the central opening 94 of the annular plate 93 and with the lifting and lowering cooperation of the vertical linear module 12, the lifting and lowering action of the stopper rod fixing device 15 through the opening 94 is realized.

[0049] like Figure 3 As shown, the target material placement rack 10 is fixedly arranged at the bottom center position of the laser deposition chamber 9, and the target material placement rack 10 is used to place the mullite target material 11; the target material placement rack 10 includes support rods 101, and the support rods 101 are symmetrically fixed at the bottom of the square base 91 front to back and left to right, and the round table 102 is fixed on the upper part of the four support rods 101; the placement table 103 is fixedly arranged at the upper center position of the round table 102, and a concave cavity 104 for placing the mullite target material 11 is opened in the center of the placement table 103.

[0050] The above target material placement rack 10 is provided to provide a stable placement space for the mullite target material 11. The above cavity 104 is provided at the center of the placement table 103. On the one hand, it provides a fixed limit for the mullite target material 11; on the other hand, it makes the mullite target material 11 and the pulse laser between the pulse laser emitting device 1 7 and the pulse laser emitting device 2 8 form an incident angle of 45 degrees, thereby increasing the density of the plasma generated when the pulse laser bombards the mullite target material 11.

[0051] like Figure 1 and 2As shown, the vertical linear module 12 is fixedly arranged in the upper position of the laser deposition chamber 9 in a front-to-back symmetrical manner, and the vertical linear module 12 is used to enable the stopper rod fixing device 15 to move up and down; the vertical linear module 12 includes a fixed seat 121, the fixed seat 121 is fixedly arranged on the upper part of the annular plate 93, the support columns 122 are symmetrically arranged in the upper part of the fixed seat 121 in the front-to-back and left-to-right directions, and the linear module 123 body is fixedly arranged on the upper part of the four support columns 122; the servo motor 124 is fixedly arranged in the upper position of the linear module 123 body, and the screw rod 125 is arranged in the inner middle position of the linear module 123 through a bearing. The upper end of the screw rod 125 passes through the upper body of the linear module 123 and is fixedly connected to the power output shaft of the servo motor 124; the slide rails 126 are symmetrically fixed on the left and right sides of the inner side of the linear module 123 body, the left and right sides of the lifting block 127 are clamped on the slide rails 126, and the middle of the lifting block 127 is fitted on the mounting screw rod 125 through a threaded hole; the proximity switch 128 is symmetrically arranged on the bottom inner edge of the body of the linear module 123, the proximity switch 128 is used to sense the moving position of the limit lifting block 127, and the proximity switch 128 is fixedly connected to the PLC control module 43 and the interactive display screen 42 through a signal transmission line.

[0052] The arrangement of the vertical linear module 12 symmetrically arranged front and back provides the stopper rod fixing device 15 with power for free lifting and lowering. By utilizing the lifting and lowering of the stopper rod fixing device 15, on the one hand, it is convenient to fix the integral stopper rod 16 in the screw hole 151326 of the stopper rod fixing head 151325 in the stopper rod shaft radial rotation mechanism 1513 of the stopper rod fixing device 15; on the other hand, the follower rotating disk 153, the connecting ring 154 and the gear ring body 155 of the stopper rod fixing device 15 are tightly matched with the opening 94 in the laser deposition chamber 9, thereby playing the role of sealing the opening 94 of the laser deposition chamber 9.

[0053] The above-mentioned setting of the proximity switch 128, under the automatic linkage cooperation between the proximity switch 128 and the PLC control module 43, can play the role of the lowest limit for the lifting block 127 of the vertical linear module 12, and further provide an extreme limit for the lifting and lowering of the stopper rod fixing device 15. As for the lifting height of the stopper rod fixing device 15, the maximum height of the rotational meshing cooperation between the screw rod 125 and the lifting block 127 shall prevail.

[0054] like Figure 1 As shown, the vacuum hole 13 is opened at the left side of the upper rear end of the laser deposition chamber 9, and the vacuum hole 13 is fixedly connected to the air inlet end of the vacuum molecular pump 5 through a vacuum tube. The above-mentioned setting of the vacuum hole 13 can realize the connection between the vacuum tube of the vacuum molecular pump 5 and the inside of the laser deposition chamber 9 through the vacuum hole 13, providing a suitable vacuum degree for the pulse laser deposition of the anti-corrosion layer.

[0055] like Figure 4-10As shown, the stopper rod fixing device 15 includes a stepper motor 151, which is arranged at the upper center position of the follower rotating disk 153, and the upper part of the driving shaft 152 passes through the center of the follower rotating disk 153 body and is fixedly connected to the power output shaft of the stepper motor 151; the stepper motor 151 is fixedly connected to the PLC control module 43 through a signal transmission line; the follower rotating disk 153 is disc-shaped; the connecting ring 154 is ring-shaped, and the connecting ring 154 is fixedly arranged at the bottom position of the follower rotating disk 153, and the diameter of the connecting ring 154 is larger than the diameter of the follower rotating disk 153; the ring gear body 155 is fixedly arranged at the bottom of the connecting ring 154, and the ring gear body 155 is an annular structure, and the axial ring gear 156 is fixedly arranged at the inner bottom position of the ring gear body 155, and the teeth of the axial ring gear 156 face the inner direction ; The radial gear ring 157 is fixedly arranged on the upper part of the axial gear ring 156, and the radial gear ring 157 is fixedly connected to the inner side of the gear ring body 155, and the teeth of the radial gear ring 157 are facing upward; the hydraulic sliding ring 158 is arranged on one side of the drive shaft 152, and the hydraulic sliding ring 158 is a rotary oil supply joint with a six-branch joint; the air curtain retaining ring 159 is fixedly arranged at the bottom position of the gear ring body 155, and the air curtain retaining ring 159 is used to continuously blow argon gas to the upper part of the radial rotating mechanism 1513 of the stopper rod shaft; the fixing claw 1510 is fixedly arranged at the bottom position of the drive shaft 152, and the fixing claw 1510 is used to fix the radial rotating mechanism 1513 of the stopper rod shaft; the through hole 1512 is opened at the left edge position of the gear ring body 155, and the through hole 1512 is a through hole that vertically passes through the gear ring body 155.

[0056] By means of the stepping motor 151, the driving shaft 152, the follower rotating disk 153, the fixed claw 1510, the main bearing seat 1511, the follower slider 15131 of the stopper shaft radial rotating mechanism 1513, the connecting shaft 15132 of the stopper shaft radial rotating mechanism 1513, and the connecting plate 15133 of the stopper shaft radial rotating mechanism 1513, the rotation of the stepping motor 151 drives the driving shaft 152 to rotate clockwise at a constant speed, and the driving shaft 152 drives the fixed claw 1510 to rotate clockwise at a constant speed; at the same time, the stopper shaft radial rotating mechanism The follow-up slider 15131 of 1513 rotates in the follow-up groove 1534 of the follow-up rotating disk 153, and the hinged connection between the follow-up slider 15131, the connecting shaft 15132 and the connecting plate 15133 and the hinged shaft 15134 of the fixed body 15104 of the fixed claw 1510 is used to realize the uniform clockwise rotation of the integral stopper rod 16 at the bottom of the six stopper rod shaft radial rotation mechanisms 1513 in the circumferential direction; on the other hand, it plays a role in reducing the radial swing of the integral stopper rod 16 at the bottom of the fixed body 15104 of the fixed claw 1510. The uniformity of the laser deposited mullite anti-corrosion layer at the axial bottom of the integral stopper rod 16 is improved.

[0057] Through the gear ring body 155 and the axial gear ring 156, under the condition that the integral stopper rod 16 at the bottom of the six stopper rod shaft radial rotation mechanisms 1513 rotates circumferentially, the meshing transmission between the axial driven gear 151324 of the stopper rod shaft radial rotation mechanism 1513 and the axial gear ring 156 is utilized to realize the axial counterclockwise uniform rotation of the six integral stopper rods 16; under the action of the circumferential overall rotation of the six integral stopper rods 16 and their own rotation, the uniformity of the laser deposited mullite anti-corrosion layer at the axial bottom of the integral stopper rod 16 is improved.

[0058] By setting the gas curtain retaining ring 159, the argon gas is transported into the retaining ring body 1591 through the argon gas hole 1593 by using the argon gas tank, and then the argon gas in the retaining ring body 1591 is blown to the upper part of the screw head 162 of the steel core 161 of the integral stopper rod 16 at the bottom of the radial rotation mechanism 1513 of the stopper rod shaft through the exhaust hole 1594, so as to form an argon gas curtain. On the one hand, the screw head 162 of the steel core 161 of the integral stopper rod 16 is shielded from laser deposition of the mullite anti-corrosion layer; on the other hand, the mullite target material 11 is blocked from being bombarded by the pulse laser on its surface, and the plasma plume glow group formed is deposited on the follow-up slider 15131, the connecting shaft 15132, the connecting plate 15133, and the hinge shaft 1513 of the radial rotation mechanism 1513 of the stopper rod shaft. 134, hinged through hole 15135, hydraulic cylinder 15136, suspension 15137, square body 15138, fixed head 15139, mounting groove 151310, fixed cylinder 151311, connecting rod 151312, hinge plate 151313, hinge cylinder 151314, pin 151315, short shaft 151316, fixed disk 151317, slewing bearing 151318, radial driven gear 151319, radial rotating shaft 151320, bearing 151321, upper gear 151322, lower gear 151323, axial driven gear 151324, stopper rod fixed head 151325, screw hole 151326 and the bottom of follower rotating disk 153. On the other hand, the air curtain retaining ring 159 itself shields the axial gear ring 156 and the radial gear ring 157 , effectively preventing the gear ring 156 and the radial gear ring 157 from being deposited by the plasma plume glow group formed by the mullite target 11 .

[0059] like Figure 1 , 2As shown in Figures 4 and 5, the follower rotating disk 153 includes a follower rotating disk body 1531, an axial hole 1532 is opened in the center of the follower rotating disk body 1531, a countersunk hole 1533 is opened at the center offset position of the follower rotating disk body 1531, and a hydraulic sliding ring 158 is fixedly arranged at the bottom position of the countersunk hole 1533 through a flange; a follower groove 1534 is opened at the bottom of the follower rotating disk body 1531, and the follower groove 1534 is a concave annular groove; a movable block 1535 is fixedly arranged at the bottom edge position of the follower rotating disk body 1531, and the movable block 1535 is a fan shape that matches the edge of the follower rotating disk body 1531.

[0060] The above-mentioned counterbore 1533 and hydraulic sliding ring 158 are arranged to provide a mounting and fixing space for the hydraulic sliding ring 158 by using the counterbore 1533. The specific structure of the hydraulic sliding ring 158 belongs to the prior art, and its specific structure and principle are fully known to those skilled in the art. Through the arrangement of the hydraulic sliding ring 158, while the hydraulic cylinder 15136, the fixed body 15104 of the fixed claw 1510 and the integral plug rod 16 rotate at a uniform speed in the circumferential direction, the hydraulic power for the telescopic action of the hydraulic cylinder 15136 telescopic rod at the bottom of the six fixed bodies 15104 can be provided.

[0061] By setting the above-mentioned follower groove 1534, under the condition that the rotation of the stepping motor 151 drives the driving shaft 152 to rotate clockwise at a uniform speed, and drives the fixed claw 1510 to rotate clockwise at a uniform speed, the follower slider 15131 of the stopper rod shaft radial rotation mechanism 1513 rotates in the follower groove 1534 of the follower rotating disk 153, and the follower slider 15131, the connecting shaft 15132 and the connecting plate 15133 are hinged with the hinge shaft 15134 of the fixed body 15104 of the fixed claw 1510. On the one hand, the integral stopper rod 16 at the bottom of the six stopper rod shaft radial rotation mechanisms 1513 is rotated clockwise at a uniform speed in the circumferential direction; on the other hand, the radial swing of the integral stopper rod 16 at the bottom of the fixed body 15104 of the fixed claw 1510 is reduced. The uniformity of the laser deposited mullite anti-corrosion layer at the axial bottom of the integral stopper rod 16 is improved.

[0062] like Figure 4 , 5As shown in , 6, 7, and 8, the stopper shaft radial rotation mechanism 1513 includes a follower slider 15131, which is slidably mounted in the follower groove 1534, the upper part of the connecting shaft 15132 is fixedly arranged at the bottom center of the follower slider 15131, the lower part of the connecting shaft 15132 is fixedly connected to the inner side end of the connecting plate 15133, the hinge shaft 15134 passes through the outer side end of the connecting plate 15133 and is hingedly fixed to the upper part of the fixed body 15104, and the hinge shaft through hole 15135 is opened at the center of the hinge shaft 15134 and extends to the lower position of the fixed body 15104; the hydraulic cylinder 15136 is installed in the hinge shaft through hole 15136 through a fixing flange. 5135, the telescopic rod of the hydraulic cylinder 15136 extends to the lower position of the fixed body 15104; the suspension 15137 is vertically fixed to the bottom of the outer end of the fixed body 15104, the square body 15138 is installed at the bottom position of the suspension 15137, and the pin 151315 passes through the square body 15138 and the suspension 15137 to be hinged and fixed; the bottom thread of the telescopic rod of the hydraulic cylinder 15136 is screwed and tightened with a fixed head 15139, the installation groove 151310 is opened at the bottom position of the fixed head 15139, the fixed cylinder 151311 is installed in the installation groove 151310, and the fixed cylinder 151311 and the fixed head 15139 are connected by the pin 151315. 139 is hinged and fixed, the upper end of the connecting rod 151312 is fixed to the middle position of the outer side of the fixed cylinder 151311, and the lower end of the connecting rod 151312 is fixed to the middle of the hinge cylinder 151314; the hinge plates 151313 are symmetrically arranged, the hinge plates 151313 are arc-shaped, the hinge cylinder 151314 is installed on the upper part of the symmetrically arranged hinge plates 151313, and the hinge plates 151313 and the hinge cylinder 151314 are fixedly hinged by the pin shaft 151315, and the lower end of the hinge plate 151313 is fixed to the outer side surface of the square body 15138; the upper part of the short shaft 151316 is fixedly arranged at the bottom of the square body 15138, and the short shaft 151316 is fixedly arranged at the bottom of the square body 15138. The lower part of 16 passes through the upper center of the fixed disk 151317 and extends to the lower part of the fixed disk 151317. The inner ring of the slewing bearing 151318 is fixedly set on the lower end of the short shaft 151316. The radial driven gear 151319 is fixedly set on the lower outer ring of the slewing bearing 151318. The radial rotating shaft 151320 is set on the outer edge of the fixed disk 151317 through the inner ring of the bearing 151321. The upper gear 151322 is fixedly set on the upper end of the radial rotating shaft 151320. The lower gear 151323 is fixed on the lower end of the radial rotating shaft 151320, and the lower gear 151323 is meshed with the radial driven gear 151319.The axial driven gear 151324 is in the shape of a boss. The axial driven gear 151324 is fixed to the bottom of the radial driven gear 151319. The stopper rod fixing head 151325 is fixedly arranged at the bottom center of the axial driven gear 151324. A screw hole 151326 is provided at the bottom center of the stopper rod fixing head 151325. The diameter of the screw hole 151326 matches the diameter of the screw head 162 and is tightened and fixed. The axial driven gear 151324 is meshed with the axial gear ring 156 for transmission. ;

[0063] Through the arrangement of the hinge shaft through hole 15135, the hydraulic cylinder 15136, the suspension 15137, the square body 15138, the fixed head 15139, the installation groove 151310, the fixed cylinder 151311, the connecting rod 151312, the hinge plate 151313, the hinge cylinder 151314, the pin 151315 and the short shaft 151316, the telescopic rod of the hydraulic cylinder 15136 is extended or retracted in the hinge shaft through hole 15135 to push the fixed head 15139 to move downward or upward. As the fixed head 15139 moves downward or upward, the fixed cylinder 151311 in the installation groove 151310 and the connecting rod 151312 are hinged and fixed, pushing the connecting rod 151312 to move downward or upward. The connecting rod 151312 swings outward or inward, and at the same time, under the hinged linkage action of the hinged plate 151313, the hinged cylinder 151314 and the connecting rod 151312, on the one hand, the square body 15138 is turned outward with the pin shaft 151315 as the center, and the turning of the square body 15138 drives the short shaft 151316, the fixed plate 151317, the slewing bearing 151318, the radial driven gear 151319, the radial rotating shaft 151320, the bearing 151321, the upper gear 151322, the lower gear 151323, the axial driven gear 151324, and the stopper rod fixing head 151325 to turn outward by 90°, so that the entire stopper rod 16 is in a radially horizontal state. On the other hand, the inner side of the square body 15138 can be turned over to drive the short shaft 151316, the fixed plate 151317, the slewing bearing 151318, the radial driven gear 151319, the radial rotating shaft 151320, the bearing 151321, the upper gear 151322, the lower gear 151323, the axial driven gear 151324, and the stopper rod fixing head 151325 to turn downward by 90°, so that the entire stopper rod 16 is in an axially horizontal state.

[0064] By setting the uniform counterclockwise rotation time of the integral stopper rod 16 in the axial horizontal state and the uniform counterclockwise rotation time of the integral stopper rod 16 in the axial horizontal state in the PLC control module 43, and utilizing the automatic linkage control of the PLC control module 43 and the hydraulic cylinder 15136, intermittent automatic switching of the axial horizontal uniform rotation and the radial horizontal uniform rotation of the integral stopper rod 16 is achieved. On the one hand, the uniformity of the laser deposition of the axial and radial mullite anti-corrosion layer of the integral stopper rod 16 is ensured, and on the other hand, the integrity of the standard laser deposited mullite anti-corrosion layer of the casting body 164 of the integral stopper rod 16 is ensured.

[0065] like Figure 1-11 As shown, the present invention provides a method for manufacturing an integrally cast stopper rod with an anti-corrosion layer, and its specific embodiment is as follows: Example

[0066] Step 1, processing of the steel core: a hollow steel pipe is used as the steel core 161, and a screw head is processed on the upper part of the steel pipe, and V-shaped anchor nails 163 are evenly welded on the circumferential surface of the steel core 161 at equal intervals; finally, organic asphalt is repeatedly applied on the surface of the steel core 161, and the thickness of the organic asphalt is 0.2 mm.

[0067] Step 2: Ingredients of castable: The castable composition is calculated by weight percentage, with 7mm fused quartz adding 10%, 3mm mullite adding 25%, 1mm mullite adding 15%, 0.088mm mullite adding 20%, and composite ultrafine powder adding 10%; Step 3, casting and molding of the integral casting stopper rod: add 8.0% of the total amount of silica sol solution during casting; mix in a mixer, put the steel core 161 into the center of the mold, cast the material cloth isostatically pressed and vibrated, and demold after 1 day; the baking temperature of the demolded stopper rod is controlled at 350°C, and baked for 12 hours to form an integral casting body 164; Step 4: Preparation of laser bombardment target: Alumina powder and silicon oxide powder with a fineness of less than 10 microns and a ratio of 2:1 are co-grinded for 1 hour and sintered at 1000°C to form a round in-situ mullite target with a purity of 99.99999%; Step 5: integrally cast stopper rod anti-corrosion layer laser deposition: 1. Placement of mullite target: first, the operator clicks the start button of the vertical linear module 12 symmetrically arranged before and after the start of the interactive display screen 42 of the control device 4. At this time, the PLC control module 43 sends a start control command to the servo motor 124. The rotation of the servo motor 124 drives the screw rod 125 to rotate. The screw rod 125 is engaged with the thread hole of the lifting block 127, so that the lifting block 127 is lifted along the slide rail 126. The lifting action of the lifting block 127 lifts the stopper rod fixing device 15 through the fixing block 14; then the round mullite target 11 is lifted and placed in the concave cavity 104 of the target placement rack 10 through the opening 94 of the laser deposition chamber 9; 2. integrally cast stopper rod anti-corrosion layer laser deposition device 10; first, the operator clicks the start button of the vertical linear module 12 symmetrically arranged before and after the start of the interactive display screen 42 of the control device 4. At this time, the PLC control module 43 sends a start control command to the servo motor 124. The rotation of the servo motor 124 drives the screw rod 125 to rotate. The screw rod 125 is engaged with the thread hole of the lifting block 127, so that the lifting block 127 is lifted along the slide rail 126. The lifting action of the lifting block 127 lifts the stopper rod fixing device 15 through the fixing block 14; then the round mullite target 11 is lifted and placed in the concave cavity 104 of the target placement rack 10 through the opening 94 of the laser deposition chamber 9; Fixing of the plug rod: align the screw head 162 of the integral plug rod 16 after casting with the screw hole 151326 of the plug rod shaft radial rotation mechanism 1513, and tighten the screw head 162 by meshing with the screw hole 151326 to fix the integral plug rod 16 vertically; at the same time, the operator clicks the descending key of the vertical linear module 12, and the PLC control module 43 sends a start control command to the servo motor 124, and uses the descending action of the vertical linear module 12 to drop the plug rod fixing device 15 to the initial position. When the proximity switch 128 senses the lifting block 127, the proximity switch 128 sends an analog signal to the PLC control module 43. After receiving the position signal of the proximity switch 128, the PLC control module 43 sends a start control command to the servo motor 124. The servo motor 124 sends a control command to stop the rotation, and at this time, the stopper rod fixing device 15 penetrates into the interior of the opening 94 of the laser deposition chamber 9; 3. Laser deposition of the anti-corrosion layer on the surface of the integral stopper rod castable: First, the operator presses the start button 44 on the control device 4 to put the control device 4, the vertical linear module 12, and the stopper rod fixing device 15 in the standby state; at the same time, the power switch of the pulse laser transformer 3 is turned on to put the pulse laser emitting device 1 7 and the pulse laser emitting device 2 8 in the working state; at the same time, the vacuum molecular pump 5 is in the working state, and the laser deposition chamber 9 is in the vacuum state; and the valve of the argon tank is opened to put the air curtain retaining ring 159 in the argon blowing state; through the PLC control module 43, the axial gear ring 156, The intermittent linkage control of the radial gear ring 157 and the stopper rod shaft radial rotation mechanism 1513 realizes the circumferential uniform rotation of the six integral stopper rods 16, and the intermittent axial and radial rotation of the integral stopper rod 16 itself; at the same time, the pulse laser emitting device 1 7 and the pulse laser emitting device 2 8 irradiate the mullite target material 11 with pulsed quantitative energy laser through the laser projection window 95 of the laser deposition chamber 9, and directly generate plasma plume groups on the surface of the mullite target material 11 through heating, melting and gasification. The plasma plume is transported vertically upward. When the plume group contacts the surface of the casting body 164 of the integral stopper rod 16, it is deposited upward to the surface of the casting body 164 of the integral casting stopper rod, forming an in-situ mullite anti-corrosion layer with high density;After cooling naturally for 6 hours in the laser deposition chamber 9, the stopper rod fixing device 15 is raised by the vertical linear module 12, and the surface of the casting body 164 of the integrally cast stopper rod is laser-deposited with the in-situ mullite anti-corrosion layer, and the integral stopper rod 16 is loosened and removed. ; Example

[0068] Step 1, processing of the steel core: a hollow steel pipe is used as the steel core 161, and a screw head 162 is processed on the upper part of the steel pipe, and V-shaped anchor nails 163 are evenly welded on the circumferential surface of the steel core 161 at equal intervals; finally, organic asphalt is repeatedly applied on the surface of the steel core 161 for many times, and the thickness of the organic asphalt is 0.5 mm.

[0069] Step 2, ingredients of castable: castable composition is calculated by weight percentage, 3mm fused quartz is added 25%, 1mm mullite is added 35%, 0mm mullite is added 20%, 0mm mullite is added 25%, composite ultrafine powder is added 15%; Step 3, casting and molding of the integral casting stopper rod: add 10.0% of the total amount of silica sol solution during casting; mix in a mixer, put the steel core 161 into the center of the mold, cast the material cloth isostatically pressed and vibrated, and demold after 1 day; the baking temperature of the demolded stopper rod is controlled at 450°C, and bake for 24 hours to form an integral casting body 164; Step 4: Preparation of laser bombardment target: Alumina powder and silicon oxide powder with a fineness of less than 10 microns and a ratio of 2:1 are co-grinded for 5 hours and sintered at 1500°C to form a round in-situ mullite target with a purity of 99.99999%; Step 5: integrally cast stopper rod anti-corrosion layer laser deposition: 1. Placement of mullite target: first, the operator clicks the start button of the vertical linear module 12 symmetrically arranged before and after the start of the interactive display screen 42 of the control device 4. At this time, the PLC control module 43 sends a start control command to the servo motor 124. The rotation of the servo motor 124 drives the screw rod 125 to rotate. The screw rod 125 is engaged with the thread hole of the lifting block 127, so that the lifting block 127 is lifted along the slide rail 126. The lifting action of the lifting block 127 lifts the stopper rod fixing device 15 through the fixing block 14; then the round mullite target 11 is lifted and placed in the concave cavity 104 of the target placement rack 10 through the opening 94 of the laser deposition chamber 9; 2. integrally cast stopper rod anti-corrosion layer laser deposition device 10; first, the operator clicks the start button of the vertical linear module 12 symmetrically arranged before and after the start of the interactive display screen 42 of the control device 4. At this time, the PLC control module 43 sends a start control command to the servo motor 124. The rotation of the servo motor 124 drives the screw rod 125 to rotate. The screw rod 125 is engaged with the thread hole of the lifting block 127, so that the lifting block 127 is lifted along the slide rail 126. The lifting action of the lifting block 127 lifts the stopper rod fixing device 15 through the fixing block 14; then the round mullite target 11 is lifted and placed in the concave cavity 104 of the target placement rack 10 through the opening 94 of the laser deposition chamber 9; Fixing of the plug rod: align the screw head 162 of the integral plug rod 16 after casting with the screw hole 151326 of the plug rod shaft radial rotation mechanism 1513, and tighten the screw head 162 by meshing with the screw hole 151326 to fix the integral plug rod 16 vertically; at the same time, the operator clicks the descending key of the vertical linear module 12, and the PLC control module 43 sends a start control command to the servo motor 124, and uses the descending action of the vertical linear module 12 to drop the plug rod fixing device 15 to the initial position. When the proximity switch 128 senses the lifting block 127, the proximity switch 128 sends an analog signal to the PLC control module 43. After receiving the position signal of the proximity switch 128, the PLC control module 43 sends a start control command to the servo motor 124. The servo motor 124 sends a control command to stop the rotation, and at this time, the stopper rod fixing device 15 penetrates into the interior of the opening 94 of the laser deposition chamber 9; 3. Laser deposition of the anti-corrosion layer on the surface of the integral stopper rod castable: First, the operator presses the start button 44 on the control device 4 to put the control device 4, the vertical linear module 12, and the stopper rod fixing device 15 in the standby state; at the same time, the power switch of the pulse laser transformer 3 is turned on to put the pulse laser emitting device 1 7 and the pulse laser emitting device 2 8 in the working state; at the same time, the vacuum molecular pump 5 is in the working state, and the laser deposition chamber 9 is in the vacuum state; and the valve of the argon tank is opened to put the air curtain retaining ring 159 in the argon blowing state; through the PLC control module 43, the axial gear ring 156, The intermittent linkage control of the radial gear ring 157 and the stopper rod shaft radial rotation mechanism 1513 realizes the circumferential uniform rotation of the six integral stopper rods 16, and the intermittent axial and radial rotation of the integral stopper rod 16 itself; at the same time, the pulse laser emitting device 1 7 and the pulse laser emitting device 2 8 irradiate the mullite target material 11 with pulsed quantitative energy laser through the laser projection window 95 of the laser deposition chamber 9, and directly generate plasma plume groups on the surface of the mullite target material 11 through heating, melting and gasification. The plasma plume is transported vertically upward. When the plume group contacts the surface of the casting body 164 of the integral stopper rod 16, it is deposited upward to the surface of the casting body 164 of the integral casting stopper rod, forming an in-situ mullite anti-corrosion layer with high density;Cool naturally in the laser deposition chamber 9 for 8 hours, use the vertical linear module 12 to lift the stopper rod fixing device 15, and loosen and remove the integral stopper rod 16 after the laser deposition of the in-situ mullite anti-corrosion layer on the surface of the integrally cast stopper rod casting body 164. ;

[0070] like Fig.11 As shown, Fig.11 In the figure is a comparison chart of the performance indexes of the three integral stopper rods in the prior art, which are Al2O3-C refractory castable, mullite and fused silica castable (casting body 164), and mullite and fused silica castable (casting body 164) + anti-corrosion layer in an actual flow control working environment.

[0071] from Fig.11 From the specific performance indicators, it can be clearly seen that in the prior art, the integral stopper rod is Al2O3-C refractory castable, and its thermal shock resistance is only 11 times, the compressive strength is 40Mpa, and the flexural strength is 8 Mpa. After the test of the integral stopper rod 16 castable project, the castable generally has cracks. The mullite and fused quartz castable (casting body 164) has increased its thermal shock resistance to 23 times, the compressive strength is 138Mpa, and the flexural strength is 22.7 Mpa. After the test of the integral stopper rod 16 castable project is completed, the castable (casting body 164) has no cracks. After the laser deposition of the in-situ mullite anti-corrosion layer of mullite and fused quartz castable (casting body 164), the thermal shock resistance is increased to 32 times, the compressive strength is 156Mpa, the flexural strength is 35.4 Mpa, and the castable has no cracks.

[0072] Various modifications to the above embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be adapted to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A laser deposition device for integrally casting an anti-corrosion layer of a stopper rod, comprising a bracket (1), an intermediate plate (2), and a pulse laser transformer (3); the bracket (1) is in a hollow square shape, the intermediate plate (2) is fixedly arranged near the bottom of the bracket (1), and the pulse laser transformer (3) is fixedly arranged on the upper part of the intermediate plate (2); characterized in that: The control device (4) is fixedly arranged at the middle position of the upper front side of the support (1); the vacuum molecular pump (5) is fixedly arranged at the upper rear end of the left side of the support (1), and the vacuum molecular pump (5) is used to maintain a vacuum in the laser deposition chamber (9) by evacuating the vacuum; the mounting blocks (6) are symmetrically arranged at the middle positions of the left and right sides of the upper part of the support (1), and the mounting blocks (6) are inclined at 45 degrees; the pulse laser emitting device 1 (7) is fixedly arranged at the upper part of the mounting block (6) on the left side, and the pulse laser emitting device 2 (8) is fixedly arranged at the upper part of the mounting block (6) on the right side; the laser deposition chamber (9) is fixedly arranged at the pulse laser The laser deposition chamber (9) is located in the middle of the first emitting device (7) and the second pulse laser emitting device (8), and is used for the first pulse laser emitting device (7) and the second pulse laser emitting device (8) to laser bombard the target material and deposit an anti-corrosion layer; the laser deposition chamber (9) comprises a square base (91), the square base (91) is a hollow square body with a small upper opening and a large lower opening, and the square base (91) is fixed in the middle of the upper part of the bracket (1); the circular cavity (92) is fixedly arranged on the upper part of the square base (91), the annular plate (93) is fixedly arranged at the upper position of the circular cavity (92), and the central circular hole of the annular plate (93) The invention relates to an opening (94) of a laser deposition chamber (9); a laser projection window (95) is symmetrically provided at left and right sides of the upper part of the circular cavity (92); the field mirrors of the pulse laser emitting device 1 (7) and the pulse laser emitting device 2 (8) are respectively aligned at 45 degrees with the laser projection window (95); a target material placement rack (10) is fixedly arranged at the bottom center of the laser deposition chamber (9); the target material placement rack (10) is used to place a mullite target material (11); a vertical linear module (12) is symmetrically fixedly arranged at the upper part of the laser deposition chamber (9); the vertical linear module (12) is used to enable the stopper rod fixing device (15) to realize The laser deposition chamber (9) is provided with a vacuum hole (13) at the left side of the upper rear end, and the vacuum hole (13) is fixedly connected to the air inlet end of the vacuum molecular pump (5) through a vacuum tube; a fixed block (14) is fixedly arranged on the outer bottom surface of the stopper rod fixing device (15) symmetrically in the front and rear, and the outer side surface of the fixed block (14) is fixedly connected to the inner side of the vertical linear module (12); an integral stopper rod (16) is fixed to the bottom of the stopper rod fixing device (15), and the stopper rod fixing device (15) is used to make a plurality of integral stopper rods (16) rotate circumferentially while realizing its own intermittent axial radial rotation.

2. The laser deposition device for integrally casting an anti-corrosion layer of a stopper rod according to claim 1, characterized in that: The target material placement rack (10) comprises support rods (101), the support rods (101) are symmetrically fixed to the bottom of the square base (91) in front-back and left-right directions, and the round table (102) is fixed to the upper part of the four support rods (101); the placement table (103) is fixedly arranged at the upper center position of the round table (102), and a concave cavity (104) for placing the mullite target material (11) is opened at the center of the placement table (103).

3. The laser deposition device for integrally casting an anti-corrosion layer of a stopper rod according to claim 1, characterized in that: The vertical linear module (12) comprises a fixed seat (121), the fixed seat (121) is fixedly arranged on the upper part of the annular plate (93), the support columns (122) are symmetrically arranged on the upper part of the fixed seat (121) in a front-to-back and left-to-right manner, and the linear module (123) body is fixedly arranged on the upper part of the four support columns (122); the servo motor (124) is fixedly arranged on the upper part of the linear module (123) body, the screw rod (125) is arranged at the inner middle position of the linear module (123) through a bearing, and the upper end of the screw rod (125) passes through the upper part of the linear module (123) and the servo motor (124). ) is fixedly connected to the power output shaft of the linear module (123); the slide rails (126) are symmetrically fixed on the left and right sides of the inner side of the linear module (123) body, the left and right sides of the lifting block (127) are clamped on the slide rails (126), and the middle of the lifting block (127) is matched with the mounting screw (125) through a threaded hole; the proximity switch (128) is symmetrically arranged on the inner side edge of the bottom of the linear module (123) body, the proximity switch (128) is used to sense the moving position of the limit lifting block (127), and the proximity switch (128) is fixedly connected to the PLC control module (43) and the interactive display screen (42) through a signal transmission line.

4. The laser deposition device for integrally casting an anti-corrosion layer of a stopper rod according to claim 1, characterized in that: The outer side surface of the fixing block (14) is fixedly arranged on the inner side surface of the lifting block (127), and the fixing block (14) fixedly connects the stopper rod fixing device (15) and the vertical linear module (12) to form a freely liftable structure.

5. The laser deposition device for integrally casting an anti-corrosion layer of a stopper rod according to claim 1, characterized in that: The stopper rod fixing device (15) comprises a stepper motor (151), the stepper motor (151) is arranged at the upper center position of the follower rotating disk (153), the upper part of the driving shaft (152) passes through the center of the follower rotating disk (153) body and is fixedly connected to the power output shaft of the stepper motor (151); the stepper motor (151) is fixedly connected to the PLC control module (43) via a signal transmission line; the follower rotating disk (153) is in the shape of a circular disk; the connecting ring (154) is in the shape of a ring, the connecting ring (154) is fixedly arranged at the bottom position of the follower rotating disk (153), and the diameter of the connecting ring (154) is larger than the diameter of the follower rotating disk (153); the gear ring body (155) is fixedly arranged at the bottom of the connecting ring (154), the gear ring body (155) is an annular structure, and the axial gear ring (156) is fixedly arranged at the inner bottom position of the gear ring body (155), and the teeth of the axial gear ring (156) face inward. The radial gear ring (157) is fixedly arranged on the upper part of the axial gear ring (156), the radial gear ring (157) is fixedly connected to the inner side of the gear ring body (155), and the teeth of the radial gear ring (157) are facing upward; the hydraulic sliding ring (158) is arranged on one side of the drive shaft (152), and the hydraulic sliding ring (158) is a rotating oil supply joint with a six-branch joint; the air curtain retaining ring (159) is fixedly arranged at the bottom of the gear ring body (155). The air curtain retaining ring (159) is used to continuously blow argon gas to the upper part of the radial rotation mechanism (1513) of the stopper rod shaft; the fixing claw (1510) is fixedly arranged at the bottom position of the driving shaft (152), and the fixing claw (1510) is used to fix the radial rotation mechanism (1513) of the stopper rod shaft; the through hole (1512) is opened at the left edge position of the gear ring body (155), and the through hole (1512) is a through hole that vertically passes through the gear ring body (155).

6. The laser deposition device for integrally casting an anti-corrosion layer of a stopper rod according to claim 5, characterized in that: The follower rotating disk (153) comprises a follower rotating disk body (1531), a shaft hole (1532) is provided at the center of the follower rotating disk body (1531), a counterbore (1533) is provided at a central offset position of the follower rotating disk body (1531), a hydraulic sliding ring (158) is fixedly arranged at the bottom position of the counterbore (1533) through a flange; a follower groove (1534) is provided at the bottom of the follower rotating disk body (1531), and the follower groove (1534) is a concave annular groove; a movable block (1535) is fixedly arranged at the bottom edge position of the follower rotating disk body (1531), and the movable block (1535) is in a fan shape matched with the edge of the follower rotating disk body (1531); an air curtain retaining ring (159) comprises a retaining ring body (15 91), the retaining ring body (1591) is a square hollow annular structure, and the upper part of the retaining ring body (1591) is evenly and fixedly provided with connecting columns (1592), and the connecting columns (1592) are fixed to the bottom edge of the gear ring body (155); the argon holes (1593) are opened at the upper left edge of the retaining ring body (1591), and the argon holes (1593) are connected to the inside of the retaining ring body (1591); the exhaust holes (1594) are evenly opened on the inner circular end surface of the retaining ring body (1591), and the exhaust holes (1594) are used to evenly discharge the argon gas in the retaining ring body (1591) and form deposits for shielding the target material from laser bombardment; the argon holes (1593) and the through holes (1512) are arranged in correspondence with each other up and down, The lower end of the argon gas delivery tube passes through the through hole (1512) and is fixedly connected to the argon gas hole (1593), and the upper end of the argon gas delivery tube is fixedly connected to the argon gas tank through the argon gas valve; the fixed claw (1510) comprises a fixed claw body (15101), the fixed claw body (15101) is circular, and a shaft mounting hole (15103) is provided at the center of the fixed claw body (15101); the fixed body (15104) is uniformly arranged around the circumference of the fixed claw body (15101), and the fixed body (15104) is strip-shaped; a stopper rod shaft radial rotation mechanism (1513) is fixedly arranged at the outer end of each fixed body (15104); the stopper rod shaft radial rotation mechanism (1513) comprises a follower slider (15131), and the follower slider (151 31) The sliding card is installed in the follower groove (1534), the upper part of the connecting shaft (15132) is fixedly arranged at the bottom center of the follower slider (15131), the lower part of the connecting shaft (15132) is fixedly connected to the inner side end of the connecting plate (15133), the hinge shaft (15134) passes through the outer side end of the connecting plate (15133) and is hinged and fixed to the upper part of the fixed body (15104), and the hinge shaft through hole (15135) is opened at the center of the hinge shaft (15134) and extends to the lower position of the fixed body (15104); the hydraulic cylinder (15136) is installed in the hinge shaft through hole (15135) through a fixing flange, and the telescopic rod of the hydraulic cylinder (15136) extends to the lower position of the fixed body (15104);The suspension (15137) is vertically fixed to the bottom of the outer end of the fixed body (15104); the square body (15138) is installed at the bottom of the suspension (15137) and is hinged and fixed by a pin (151315) passing through the square body (15138) and the suspension (15137); the bottom thread of the telescopic rod of the hydraulic cylinder (15136) is screwed with a fixed head (15139); the installation groove (151310) is opened at the bottom of the fixed head (15139); the fixed cylinder (151311) is installed in the installation groove (151310), and the fixed cylinder (151311) and the fixed head (15139) are hinged and fixed by the pin (151315). The upper end of the connecting rod (151312) is fixed to the middle position of the outer side of the fixing tube (151311), and the lower end of the connecting rod (151312) is fixed to the middle of the hinge tube (151314); the hinge plates (151313) are symmetrically arranged, the hinge plates (151313) are arc-shaped, the hinge tube (151314) is installed on the upper part of the symmetrically arranged hinge plates (151313), and the hinge plates (151313) and the hinge tube (151314) are fixedly hinged by the pin shaft (151315), and the lower end of the hinge plate (151313) is fixed to the outer side surface of the square body (15138); the upper part of the short shaft (151316) is fixedly arranged The bottom of the square body (15138) is provided with a short shaft (151316) which passes through the upper center of the fixed plate (151317) and extends to the lower part of the fixed plate (151317). The inner ring of the slewing bearing (151318) is fixedly arranged on the lower end of the short shaft (151316). The radial driven gear (151319) is fixedly arranged on the lower outer ring of the slewing bearing (151318). The radial rotating shaft (151320) is arranged on the outer edge of the fixed plate (151317) through the inner ring of the bearing (151321). The upper gear (151322) is fixedly arranged on the upper end of the radial rotating shaft (151320). The lower gear (151323) is fixedly arranged on the lower outer ring of the slewing bearing (151318). The lower gear (151323) is fixed at the lower end of the radial rotating shaft (151320), and the lower gear (151323) is meshed with the radial driven gear (151319); the axial driven gear (151324) is in the shape of a boss, and the axial driven gear (151324) is fixed at the bottom of the radial driven gear (151319); the stopper rod fixing head (151325) is fixedly arranged at the bottom center of the axial driven gear (151324); a screw hole (151326) is provided at the bottom center of the stopper rod fixing head (151325); the diameter of the screw hole (151326) matches the diameter of the screw head (162) and is tightened and fixed; the axial driven gear (151324) is meshed with the axial gear ring (156) for transmission. ; 7. The laser deposition device for integrally casting an anti-corrosion layer of a stopper rod according to claim 6, characterized in that: The upper air inlet end of the hydraulic sliding ring (158) is fixedly connected to the solenoid valve oil valve of the hydraulic station via a hydraulic oil pipe, the solenoid valve oil valve of the hydraulic station is fixedly connected to the PLC control module (43) via a signal transmission line, and the PLC control module (43) is fixedly connected to the interactive display screen (42); the lower six branch joints of the hydraulic sliding ring (158) are fixedly connected to the hydraulic cylinder (15136) of the plug rod shaft radial rotation mechanism (1513) on each fixed body (15104).

8. The laser deposition device for integrally casting an anti-corrosion layer of a stopper rod according to claim 1, characterized in that: The integral stopper rod (16) comprises a steel core (161) having a hollow structure, a screw head (162) being provided at the upper portion of the steel core (161), anchoring pins (163) being fixed uniformly and equidistantly around the outer surface of the steel core (161), and a casting body (164) being formed by isostatic casting and vibration molding using a molding die; the screw head (162) being screwed and fixed in a screw hole (151326) at the bottom of a stopper rod fixing head (151325).

9. A method for manufacturing an integrally cast stopper rod with an anti-corrosion layer, characterized in that: A method for manufacturing an integral stopper rod with an anti-corrosion layer by using a laser deposition device for an anti-corrosion layer of an integrally cast stopper rod according to any one of claims 1 to 8: Step 1: Processing of the steel core: a hollow steel tube is used as the steel core (161), a screw head (162) is processed on the upper part of the steel tube, and V-shaped anchor nails (163) are evenly welded at equal intervals on the circumferential surface of the steel core (161); finally, organic asphalt is repeatedly applied to the surface of the steel core (161) for multiple times, and the thickness of the organic asphalt applied is 0.2 mm to 0.5 mm; Step 2, ingredients of castable: castable composition is calculated by weight percentage, 10%~25% of fused quartz with a particle size of 7mm~3mm, 25%~35% of mullite with a particle size of 3mm~1mm, 15%~20% of mullite with a particle size of 1mm~0mm, 20%~25% of mullite with a particle size of 0.088mm~0mm, and 10%~15% of composite ultrafine powder; Step 3, casting and molding of the integral casting stopper rod: during casting, add 8.0% to 10.0% of the total amount of silica sol solution; mix in a mixer, put the steel core (161) into the center of the mold, cast the material cloth and perform isostatic pressing and vibration molding, and demold after 1 day; the baking temperature of the demolded stopper rod is controlled at 350° C. to 450° C., and bake for 12 h to 24 h to form an integral casting body (164); Step 4: Preparation of laser bombardment target: Alumina powder and silicon oxide powder with a fineness of less than 10 microns and a ratio of 2:1 are subjected to a co-grinding process for 1h to 5h, and sintered at a high temperature of 1000℃ to 1500℃ to form a round in-situ mullite target with a purity of 99.99%; Step 5: Laser deposition of the integrally cast stopper rod anti-corrosion layer:

1. Placement of the mullite target: First, the operator clicks the start button of the vertical linear module (12) symmetrically arranged before and after the start of the interactive display screen (42) of the control device (4). At this time, the PLC control module (43) sends a start control command to the servo motor (124). The rotation of the servo motor (124) drives the screw rod (125) to rotate. When the screw rod (125) and the thread hole of the lifting block (127) are engaged, the lifting block (127) is lifted along the slide rail (126). The lifting action of the lifting block (127) lifts the stopper rod fixing device (15) through the fixing block (14); then the round mullite target is placed. (11) is lifted and placed in the concave cavity (104) of the target material placement frame (10) through the opening (94) of the laser deposition chamber (9); 2. Fixing of the integral stopper rod: align the screw head (162) of the integral stopper rod (16) after casting with the screw hole (151326) of the stopper rod shaft radial rotation mechanism (1513), and tighten the screw head (162) and the screw hole (151326) by meshing to fix the integral stopper rod (16) vertically; at the same time, the operator clicks the descending key of the vertical linear module (12), and the PLC control module (43) sends a start control command to the servo motor (124), and the stopper rod fixing device (124) is moved by the descending action of the vertical linear module (12). 15) descends to the initial position. When the proximity switch (128) senses the lifting block (127), the proximity switch (128) sends an analog signal to the PLC control module (43). After receiving the position signal of the proximity switch (128), the PLC control module (43) sends a control command to stop the rotation to the servo motor (124) of the vertical linear module (12). At this time, the stopper rod fixing device (15) penetrates into the interior of the opening (94) of the laser deposition chamber (9); 3. Laser deposition of the anti-corrosion layer on the surface of the integral stopper rod casting material: First, the operator presses the start button (44) on the control device (4) to make the control device (4), the vertical linear module (12), and the stopper rod fixing device (15) start to rotate. The device (15) is in a standby state; the power switch of the pulse laser transformer (3) is turned on at the same time, so that the pulse laser emitting device 1 (7) and the pulse laser emitting device 2 (8) are in a working state; the vacuum molecular pump (5) is in a working state, and the laser deposition chamber (9) is in a vacuum state; and the valve of the argon gas tank is opened so that the air curtain retaining ring (159) is in an argon gas blowing state; through the intermittent linkage control of the PLC control module (43), the axial gear ring (156), the radial gear ring (157) and the stopper rod shaft radial rotation mechanism (1513), the six integral stopper rods (16) are rotated at a uniform speed in the circumferential direction, and the integral stopper rod (16) itself is intermittently rotated in the axial and radial directions;At the same time, the pulse laser emitting device 1 (7) and the pulse laser emitting device 2 (8) irradiate the mullite target material (11) with pulsed quantitative energy laser through the laser projection window (95) of the laser deposition chamber (9), and directly generate plasma plume light groups on the surface of the mullite target material (11) through heating, melting and gasification. The plasma plume light groups are transported vertically upward. When the plume light groups contact the surface of the casting body (164) of the integral stopper rod (16), they are deposited upward on the surface of the casting body (164) of the integral casting stopper rod, forming an in-situ mullite anti-corrosion layer with high density; the stopper rod is naturally cooled in the laser deposition chamber (9) for 6 to 8 hours, and the stopper rod fixing device (15) is raised by the vertical linear module (12), and the in-situ mullite anti-corrosion layer is deposited on the surface of the casting body (164) of the integral casting stopper rod. The integral stopper rod (16) is loosened and removed. ; 10. The method for manufacturing a monolithic cast stopper rod with an anti-corrosion layer according to claim 9, characterized in that: In step 2, the composite ultrafine powder is aluminum oxide powder and silicon oxide powder, the ratio of aluminum oxide powder to silicon oxide powder is 2:1, and a co-grinding process is performed for 1h to 5h, and the fineness of the composite ultrafine powder is less than 10 microns.

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