Preparation process of a high-purity ferroboron alloy

Abstract

The present invention relates to the technical field of ferroboron alloys, and specifically to a preparation process of a high-purity ferroboron alloy, which includes the following steps: S1, raw material preparation; S2, electric furnace melting; S3, chemical refining; S4, composition adjustment; S5, casting and cooling; S6, heat treatment. The heat treatment equipment in step S6 includes a heating box, a placement mechanism, a path unit, a driving unit and an intermittent unit. In the present invention, the driving unit enables the clamped ingot to move intermittently along a set path, so that the internal ingot can move to the outside close to the heat source, making each ingot heat evenly. Secondly, the intermittent unit enables the ingot to deflect a certain angle. When the ingot moves out of the vertical section of the path, the area clamped by the ingot in the initial state is exposed. In summary, the area of the ingot facing the heat source and the distance from the heat source are intermittently changed, improving the heating effect during the heat treatment of the ingot and avoiding problems such as overheating and insufficient heating.

Description

Technical Field

[0001] The present invention relates to the technical field of ferroboron alloys, and specifically to a preparation process of high-purity ferroboron alloy. Background Art

[0002] High-purity ferroboron alloy is a special alloy material with higher purity and extremely low impurity content. Based on ordinary low-carbon ferroboron alloy, the contents of carbon element and elements such as silicon, aluminum, and titanium are further reduced, and the proportion of carbon element is strictly reduced. Due to its high purity and precise composition control, this material is widely used in technical fields such as high-end steel manufacturing, special alloys, electronics, and optoelectronics industries. At present, the preparation methods of high-purity low-carbon ferroboron alloy include steps such as raw material preparation, electric furnace melting, chemical refining, composition adjustment, casting cooling, and heat treatment. The main purpose of the heat treatment step is to optimize the internal organizational structure of the material and improve the material properties.

[0003] High-purity ferroboron alloy round ingots are high-quality raw materials specifically used for metallurgy and special steel production. The main feature is that they contain a relatively high boron element, mainly in a cylindrical or cylindrical shape, which is convenient for storage and transportation. During the operation process, it is necessary to perform heat treatment on the ingots after casting cooling. Currently, during the heat treatment operation, multiple ingots are mainly fixed to a frame, and then the frame and multiple ingots are moved into a heating furnace for heating (the current heating sources include resistance heating elements, induction coils, burners, and microwave generators, etc.). After heating, they are taken out for cooling.

[0004] For the current heat treatment operation process, there are the following problems: The heat sources in the heating furnace are usually located on both sides of the ingots. Therefore, during the heating process, the part of the ingot close to the heat source is heated sufficiently, but the part of the ingot far from the heat source is prone to insufficient heating, which affects the heat treatment effect, and even leads to problems such as increased internal stress, deformation, and cracking of the ingot. Summary of the Invention

[0005] Based on this, it is necessary to provide a preparation process of high-purity ferroboron alloy, aiming to solve the problems of the above-mentioned existing technologies.

[0006] The present application provides a preparation process of high-purity ferroboron alloy, including the following steps: S1. Raw material preparation: Select high-purity boron ore and iron ore as raw materials, and perform cleaning and screening pretreatment operations on the raw materials.

[0007] S2. Electric furnace melting: Add the raw materials into a vacuum arc furnace for high-temperature melting operation, and add an appropriate amount of graphite powder reducing agent to control the carbon content to meet the low-carbon standard. At the same time, treat the melt in a vacuum environment, and use low-pressure conditions to reduce the gas solubility to effectively remove hydrogen and nitrogen gas impurities.

[0008] S3. Chemical refining: An oxidant is added to the melt in the vacuum arc furnace for chemical oxidation refining treatment.

[0009] S4. Composition adjustment: Boron and necessary alloying elements are accurately added to the melt in the vacuum arc furnace to ensure that the chemical composition meets the requirements.

[0010] S5. Casting and cooling: The melt after chemical refining and composition adjustment is poured into a mold, and the crystallization process is controlled by an appropriate cooling rate to obtain an ingot.

[0011] S6. Heat treatment: The ingot after casting and cooling is subjected to heat treatment operations through a heat treatment device, and surface polishing treatment is carried out after heat treatment cooling to obtain the required high-purity low-carbon ferroboron alloy ingot.

[0012] The heat treatment device described in step S6 includes a heating box. A sealing door is provided at the upper opening of the heating box. Two symmetrically arranged mounting frames are slidably installed up and down in the heating box through a lifting frame. Two reinforcing frames are fixedly arranged between the two mounting frames. A placing mechanism is arranged between the two mounting frames.

[0013] The placing mechanism includes a path unit. A path unit for guiding the ingot to move along a specified route is arranged between the two mounting frames. The path unit includes a semicircular groove. Two symmetrically arranged semicircular grooves are penetrated through the mounting frame. A semicircular plate located in the corresponding semicircular groove is fixedly arranged on the mounting frame. The semicircular plate and the semicircular groove together form the path for the ingot to move. A plurality of moving rollers are arranged at equal intervals along the path in the semicircular groove. Horizontally arranged columns extending from front to back are rotatably installed on the opposite surfaces of two relatively arranged moving rollers. Two arc-shaped clamping plates distributed up and down are arranged on the end surface of the horizontally arranged column far from the mounting frame. The corresponding two clamping plates cooperate with each other to support and lock the ingot. A driving unit is arranged on the mounting frame.

[0014] An intermittent unit is arranged on the two mounting frames together. The intermittent unit includes a pushing rack. Two groups of strip groups distributed up and down are arranged on the opposite surfaces of the two mounting frames. Each strip group includes two pushing racks distributed left and right.

[0015] According to a preferred embodiment, the path unit further includes an equidistant strip. An equidistant strip is arranged between adjacent two horizontally arranged columns. The equidistant strip and the horizontally arranged column are rotatably connected to each other. All the horizontally arranged columns corresponding to the same semicircular groove are staggered front and back. A reinforcing column extending from front to back is fixedly arranged between the front and back adjacent clamping plates. A placing groove is opened on the inner arc surface of the lower clamping plate corresponding to the same horizontally arranged column. A plurality of circumferentially distributed rolling rollers are rotatably arranged in the placing groove.

[0016] According to an advantageous embodiment, the driving unit includes fixed columns. Opposite surfaces of the front and rear opposing moving rollers are fixedly provided with fixed columns whose axes extend from front to rear. Opposite surfaces of the front and rear opposing fixed columns are fixedly provided with sprocket wheels I. Opposite surfaces of the two mounting frames are rotatably provided with driving columns. Two sprocket wheels II distributed front and rear are fixedly sleeved on the driving columns. Chains are commonly provided between the two sprocket wheels II and all the sprocket wheels I corresponding to the two semi-circular grooves.

[0017] According to an advantageous embodiment, opposite surfaces of the two mounting frames are fixedly provided with a plurality of arc-shaped plates through connecting frames.

[0018] According to an advantageous embodiment, an end face of the driving column away from the mounting frame is fixedly provided with a rectangular driving section. Driving shafts whose axes extend from front to rear and penetrate through the heating box are rotatably provided on the front and rear sides of the heating box. A driving square tube is slidably sleeved on the inner end of the driving shaft in the heating box. A spring I is commonly fixedly provided between the driving square tube and the heating box. An end face of the driving square tube close to the mounting frame is an inclined surface that approaches the mounting frame from top to bottom. When the mounting frame moves downward, the driving section is inserted into the corresponding driving square tube.

[0019] According to an advantageous embodiment, the placing mechanism further includes a sector plate. A sector plate is fixedly provided on an end face of the horizontal column away from the adjacent mounting frame. The corresponding lower clamping plate is fixedly provided on the sector plate. A rectangular block is rotatably sleeved on the horizontal column. A connecting frame is provided on the rectangular block. The rectangular block is slidably provided on the connecting frame. The corresponding upper clamping plate is fixedly provided on the connecting frame. A spring II is commonly fixedly provided between the connecting frame and the corresponding rectangular block.

[0020] According to an advantageous embodiment, the placing mechanism further includes a locking unit. The locking unit includes an L-shaped block. L-shaped blocks are fixedly provided on lower end faces of the connecting frames. Locking grooves are formed in vertical sections of the L-shaped blocks. A sliding plate is slidably provided on the horizontal column along its axis direction. A locking block is fixedly provided on the sliding plate. A spring III is provided between the sliding plate and the adjacent equidistant strip.

[0021] According to an advantageous embodiment, the intermittent unit further includes an unlocking group for unlocking the locked state of the clamping plate. The unlocking group includes a fixed frame. Two upper and lower distributed fixed frames are fixedly provided on opposite surfaces of the two mounting frames. Two front and rear distributed and left and right staggered push rods are slidably penetrated through the fixed frame from left to right. Arc-shaped unlocking strips are fixedly provided on opposite surfaces of the corresponding two push rods. Inner arc surfaces of the unlocking strips face upward. The unlocking strips that are opposite left and right are left and right symmetric. The two unlocking strips that are opposite front and rear are front and rear symmetric. A rear end face of the rear unlocking strip on the right side is inclined forward from left to right.

[0022] According to an advantageous embodiment, the intermittent unit further includes a U-shaped frame. The U-shaped frame is fixedly arranged on the fixed frame and the adjacent mounting frame together. A driving rod that slides up and down is arranged on the two U-shaped frames that face each other up and down. A driving plate corresponding to each U-shaped frame is fixedly sleeved on the driving rod. The driving plate is located below the corresponding U-shaped frame. A moving plate that slides up and down is sleeved on the driving rod. A fourth spring is fixedly arranged between the moving plate and the driving plate. An articulated bar is hinged left and right at the end face of the moving plate facing the adjacent mounting frame through a connecting block. The articulated bar is hinged to the adjacent unlocking bar.

[0023] According to an advantageous embodiment, a gear is rotatably arranged on the vertical section of the U-shaped frame. Two pushing racks in the same group slide left and right on the vertical section of the corresponding U-shaped frame and the pushing racks mesh with the corresponding gear. The two pushing racks are symmetric about the axis of the gear up and down. A second rack that is staggered from the adjacent first rack is fixedly arranged on the driving plate through a connecting rod. The second rack meshes with the corresponding gear. A square block is fixedly arranged on the outer arc surface of the upper clamping plate among the two clamping plates corresponding to the same horizontal column. A scroll spring is fixedly arranged between the horizontal column and the corresponding rectangular block.

[0024] In summary, the present invention includes at least one of the following beneficial effects: First, the driving unit of the present invention enables the clamped ingot to move intermittently along a set path, so that the internal ingot can move to the outside close to the heat source, making each ingot heat evenly. Secondly, the intermittent unit enables the ingot to deflect a certain angle. Therefore, when the ingot moves out of the vertical section of the path, the area initially clamped by the ingot is exposed, and then heat treatment is carried out. In summary, the area of the ingot facing the heat source and the distance from the heat source are intermittently changed, improving the heat absorption effect during the heat treatment process and avoiding problems of overheating and insufficient heat absorption.

[0025] Second, the driving section on the driving column is connected to the driving shaft in a way of inserting up and down. This way can transmit the drive of the external motor to the two mounting frames in the heating box, and at the same time meet the requirements of quick disassembly and quick installation of the mounting frames, facilitating lifting out the two mounting frames and all the ingots at the same time for the next operation after the heat treatment, and also being able to avoid the problem that the high temperature in the heating box affects the operating state of the motor. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0027] Figure 1Shows a flowchart of a preparation process of a high-purity ferroboron alloy provided according to an embodiment of the present invention.

[0028] Figure 2 Shows a schematic structural diagram of the heat treatment equipment in step S6 provided according to an embodiment of the present invention.

[0029] Figure 3 Shows a partial cross-sectional structural schematic diagram among a heating box, a reinforcing frame, and a reinforcing column provided according to an embodiment of the present invention.

[0030] Figure 4 Shows a three-dimensional view among a mounting frame, a clamping plate, and a semi-circular groove provided according to an embodiment of the present invention.

[0031] Figure 5 Shows a Figure 4 magnified view at A in

[0032] Figure 6 Shows a three-dimensional schematic diagram of a clamping plate, a direction block, and a locking unit provided according to an embodiment of the present invention.

[0033] Figure 7 Shows a structural schematic diagram among a horizontal column, a fixed column, and a clamping plate provided according to an embodiment of the present invention.

[0034] Figure 8 Shows a Figure 7 magnified view at B in

[0035] Figure 9 Shows a change schematic diagram of unlocking a locking block by an unlocking group provided according to an embodiment of the present invention.

[0036] Figure 10 Shows a three-dimensional structural schematic diagram among a U-shaped frame, an unlocking bar, and a hinged bar provided according to an embodiment of the present invention.

[0037] Figure 11 Shows a three-dimensional structural schematic diagram among a clamping plate, a rolling roller, and a connecting frame provided according to an embodiment of the present invention.

[0038] Among them, the above-mentioned drawings include the following reference numerals: 1, heating box; 10, sealing door; 11, mounting rack; 12, reinforcing rack; 2, placing mechanism; 20, path unit; 200, semi-circular groove; 201, semi-circular plate; 202, moving roller; 203, horizontal column; 204, clamping plate; 21, equidistant strip; 210, reinforcing column; 211, rolling roller; 22, fan-shaped plate; 220, rectangular block; 221, connecting frame; 222, second spring; 23, locking unit; 230, L-shaped block; 231, locking groove; 232, sliding plate; 233, locking block; 234, third spring; 3, driving unit; 30, fixed column; 31, first sprocket; 32, driving column; 33, second sprocket; 34, chain; 35, arc plate; 36, driving section; 360, driving shaft; 361, driving square tube; 362, first spring; 4, intermittent unit; 40, pushing rack; 41, unlocking group; 410, fixed frame; 411, pushing rod; 412, unlocking strip; 42, U-shaped frame; 420, driving rod; 421, driving plate; 422, moving plate; 423, fourth spring; 424, hinged strip; 43, gear; 430, second rack; 431, square block; 432, volute spring. Detailed implementation manners

[0039] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention in conjunction with the drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0040] As Figure 1 shown, a preparation process of high-purity ferroboron alloy includes the following steps: S1. Raw material preparation: Select high-purity boron ore and iron ore as raw materials, and perform cleaning and screening pretreatment operations on the raw materials to ensure that the impurity content in the raw materials is as low as possible.

[0041] S2. Electric furnace melting: Add the raw materials into a vacuum arc furnace for high-temperature melting operation, and add an appropriate amount of graphite powder reducing agent to control the carbon content to meet the low-carbon standard. At the same time, process the melt in a vacuum environment, use low-pressure conditions to reduce the gas solubility, and effectively remove hydrogen and nitrogen gas impurities. The arc furnace can provide a high enough temperature to melt the raw materials and help remove some volatile impurities.

[0042] S3. Chemical refining: Add an oxidant to the melt in the vacuum arc furnace for chemical oxidation refining treatment; among them, the oxidant is selected from calcium oxide or manganese oxide, and silicon and aluminum elements in the melt are effectively removed through chemical reactions. The oxides produced by the chemical reactions will float on the surface of the melt to form slag and thus be removed.

[0043] S4. Composition adjustment: Precisely add boron and necessary alloying elements to the melt in the vacuum arc furnace to ensure that the chemical composition meets the requirements.

[0044] S5. Casting and cooling: Pour the melt after chemical refining and composition adjustment into a mold, and control the crystallization process by an appropriate cooling rate to obtain an ingot. Appropriate cooling techniques can be used to obtain a fine and uniform grain structure, improve the material properties, and avoid the generation of microdefects.

[0045] S6. Heat treatment: Perform heat treatment operations on the ingot after casting and cooling through a heat treatment device. After heat treatment and cooling, perform surface polishing treatment to obtain the required high-purity low-carbon ferroboron alloy ingot. The organizational structure of the ingot can be improved and the mechanical properties can be enhanced through heat treatment.

[0046] As Figure 2 and Figure 3 shown, the heat treatment device described in step S6 includes a heating box 1. A sealing door 10 is provided at the upper opening of the heating box 1. Two symmetrically arranged mounting frames 11 are slidably installed up and down in the heating box 1 through a lifting frame. Two reinforcing frames 12 for enhancing the overall load-bearing strength are fixedly arranged between the two mounting frames 11. A placing mechanism 2 is arranged between the two mounting frames 11. Heat sources for heat treatment operations (the heat sources include existing resistance heating elements, induction coils, burners, microwave generators, etc.) are provided on the left and right inner sides of the heating box 1.

[0047] As Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8 shown, the placing mechanism 2 includes a path unit 20. A path unit 20 for guiding the ingot to move along a specified route is arranged between the two mounting frames 11. The path unit 20 includes a semi-circular groove 200. Two symmetrically arranged semi-circular grooves 200 are formed through the mounting frame 11. A semi-circular plate 201 is fixedly arranged on the mounting frame 11 and located in the corresponding semi-circular groove 200. The semi-circular plate 201 and the semi-circular groove 200 together form the path for the ingot to move. A plurality of moving rollers 202 are arranged at equal intervals along the path in the semi-circular groove 200. The diameter of the moving roller 202 is the same as the distance between the semi-circular plate 201 and the semi-circular groove 200. Horizontally arranged columns 203 with axes extending from front to back are rotatably installed on the opposite faces of two relatively arranged moving rollers 202. Two arc-shaped clamping plates 204 distributed up and down are arranged at the end faces of the horizontal columns 203 far from the mounting frame 11. The corresponding two clamping plates 204 cooperate with each other to support and lock the ingot. A driving unit 3 is arranged on the mounting frame 11. Through the operation of the driving unit 3, the clamping plates 204 drive the corresponding ingot to move along the specified path.

[0048] As Figure 2 and Figure 10 shown, an intermittent unit 4 is jointly provided on the two mounting brackets 11. The intermittent unit 4 includes a pushing rack 40. Two groups of strip groups distributed up and down are provided on the opposite surfaces of the two mounting brackets 11. Each strip group includes two pushing racks 40 distributed left and right. By the operation of the intermittent unit 4, the pushing rack 40 pushes the clamping plate 204 above the same side, causing the ingot to deflect.

[0049] It should be noted that during the heat treatment operation, all components in the heating box 1 are made of high-temperature resistant materials.

[0050] Initially, an external existing lifting device 1 pulls up the lifting frame, causing the two mounting brackets 11 to move out of the heating box 1. Then, the loading process before heat treatment is as follows: The staff uses an external existing lifting device 2 to lift the ingot to be heat treated and load it between the two clamping plates 204 on the same horizontal column 203, so that a total of four clamping plates 204 between the two horizontally opposite horizontal columns 203 cooperate to clamp and support an ingot. Finally, all the clamping plates 204 clamp and support an ingot. Then, the external lifting device 1 gradually lowers the lifting frame, causing the two mounting brackets 11 to drive the ingots thereon back into the heating box 1, and the external existing lifting device 3 lowers the lifting and closing door 10 and finally closes the door 10.

[0051] The heat source works to heat treat all the ingots from the left and right sides of the heating box 1. At the same time, the driving unit 3 works to make the clamped ingot move along the formed path (this path is divided into an arc section and a vertical section in the left-right direction, and the vertical section of the path is close to the center position of the mounting bracket 11), so that the ingot near the axis position of the mounting bracket 11 can move outward close to the heat source, ensuring that each ingot can be heated evenly. Secondly, when the ingot undergoes heat treatment operation for a period of time and moves from top to bottom along the vertical section of the path to the specified position, the driving unit 3 stops working. Then, the intermittent unit 4 works to make the pushing racks 40 in the same strip group move away from each other, thereby pushing the corresponding upper clamping plate 204, so that the ingot deflects. During the process of the ingot moving up and down in the vertical section, through intermittent deflection on both sides, the area of the ingot covered by the clamping plate 204 in the initial state is exposed, ensuring that the ingot can be heated evenly and improving the heat treatment effect.

[0052] After the heat treatment operation is completed, the two mounting brackets 11 and the ingots thereon are lifted by an external lifting device 1 and moved out of the heating box 1, and all the ingots are directly moved through the way of lifting the mounting bracket 11 for subsequent cooling steps. When all the steps are completed, all the ingots can be taken out.

[0053] As Figure 3 、Figure 4 , Figure 6 , Figure 7 and Figure 10 As shown in Figure 4 , Figure 6 , Figure 7 and Figure 10 , the path unit 20 further includes equidistant bars 21. Equidistant bars 21 are commonly arranged between two adjacent horizontal columns 203, and the equidistant bars 21 and the horizontal columns 203 are rotatably connected to each other. All the horizontal columns 203 corresponding to the same semi-circular groove 200 are staggered front and back. A reinforcing column 210 with an axis extending from front to back is fixedly arranged between two adjacent clamping plates 204 front and back. An inner arc surface of the lower clamping plate 204 corresponding to the same horizontal column 203 is provided with a placement groove, and a plurality of circumferentially distributed rolling rollers 211 are rotatably arranged in the placement groove.

[0054] Through all the equidistant bars 21 corresponding to the same semi-circular groove 200, the distance between two adjacent horizontal columns 203 in the same semi-circular groove 200 is kept fixed, so that two adjacent horizontal columns 203 are connected and locked, which is convenient for the subsequent driving unit 3 to drive all the horizontal columns 203 in the same semi-circular groove 200 to move. Secondly, the strength between two opposite clamping plates 204 front and back is strengthened by the reinforcing column 210, improving the stability during the heat treatment process. And through the arranged rolling rollers 211, the placed ingot is in rolling contact with the corresponding lower clamping plate 204, avoiding the friction caused by direct contact from affecting the subsequent deflection process.

[0055] As Figure 3 and Figure 4 As shown in Figure 3 and Figure 4 , the driving unit 3 includes fixed columns 30. Fixed columns 30 with an axis extending from front to back are fixedly arranged on the opposite surfaces of the front and back moving rollers 202. Sprockets one 31 are fixedly arranged on the opposite surfaces of the front and back fixed columns 30. Driving columns 32 are rotatably arranged on the opposite surfaces of the two mounting frames 11. Two sprockets two 33 are fixedly sleeved on the driving columns 32 and are distributed front and back. Chains 34 are commonly arranged between all the sprockets one 31 corresponding to the two sprockets two 33 corresponding to the two corresponding semi-circular grooves 200. Two adjacent chains 34 are staggered front and back. The load-bearing capacities of the sprockets one 31, the sprockets two 33 and the chains 34 all meet the gravity pulling load requirements of multiple ingots.

[0056] As Figure 4 As shown in Figure 4 , a plurality of arc-shaped plates 35 are fixedly arranged on the opposite surfaces of the two mounting frames 11 through connecting frames. The trajectory shape of the chain 34 is maintained by the mutual cooperation of all the arc-shaped plates 35 corresponding to the semi-circular groove 200.

[0057] As Figure 4 and Figure 5As shown, a rectangular driving section 36 is fixedly arranged on the end face of the driving column 32 away from the mounting frame 11. Driving shafts 360 (the driving shafts 360 are connected to an external motor) whose axes extend from front to back and penetrate through the heating box 1 are rotatably arranged on the front and rear sides of the heating box 1. A driving square tube 361 is slidably sleeved on the front and rear ends of the driving shaft 360 located inside the heating box 1. A first spring 362 is fixedly arranged between the driving square tube 361 and the heating box 1. The end face of the driving square tube 361 close to the mounting frame 11 is an inclined surface that approaches the mounting frame 11 from top to bottom. When the mounting frame 11 moves downward, the driving section 36 is inserted into the corresponding driving square tube 361.

[0058] During operation, after placing the ingot on the corresponding clamping plate 204, an external lifting device 1 drives the mounting frame 11 to move downward. The mounting frame 11, the driving column 32, and the driving section 36 move downward synchronously. During the downward movement of the driving section 36, the driving section 36 first contacts the inclined surface of the driving square tube 361, and makes the adjacent inner wall of the driving square tube 361 close to the heating box 1, and the first spring 362 is compressed. As the driving column 32 and the driving section 36 continue to move downward, the driving section 36 is opposite to the inner tube of the driving square tube 361 in the front and back. The elastic force generated by the deformation of the first spring 362 makes the driving square tube 361 approach the corresponding driving section 36. Finally, when the mounting frame 11 moves downward to the designated position, the driving section 36 is clamped into the inner tube of the driving square tube 361.

[0059] During the subsequent heat treatment process, the external motor works to drive the driving square tube 361 to rotate synchronously through the driving shaft 360. The driving square tube 361 drives the driving column 32 to rotate synchronously through the cooperation between it and the corresponding driving section 36. Therefore, the driving of the external motor can be transmitted to the two mounting frames 11 inside the heating box 1 in the above way. Through the above plug-in installation and external transmission methods, the disassembly and installation requirements of the mounting frame 11 are met. Secondly, the problem that the high temperature inside the heating box 1 affects the operating state of the motor can also be avoided.

[0060] During the rotation of the driving column 32, the driving column 32 drives the sprocket two 33 on it to rotate synchronously. Through the cooperation between the sprocket two 33 and the corresponding chain 34, and the cooperation between the chain 34 and the corresponding sprocket one 31, the horizontal column 203 moves along the path formed between the semi-circular groove 200 and the corresponding semi-circular plate 201. Therefore, the two horizontally opposite horizontal columns 203 drive the ingot to move from the outside of the mounting frame 11 to the inside of the mounting frame 11 through the corresponding clamping plates 204, so that each ingot is heated evenly. It should be noted that during the movement of the above ingot, due to the gravity of the ingot itself, the two clamping plates 204 corresponding to the same horizontal column 203 are always opposite up and down.

[0061] As Figure 2 and Figure 11As shown, the placement mechanism 2 further includes a sector plate 22. A sector plate 22 is fixedly arranged on the end face of the horizontal column 203 away from the adjacent mounting frame 11. The corresponding lower clamping plate 204 is fixedly arranged on the sector plate 22. A rectangular block 220 is rotatably sleeved on the horizontal column 203. A connecting frame 221 is arranged on the rectangular block 220. The rectangular block 220 is slidably arranged on the connecting frame 221. The corresponding upper clamping plate 204 is fixedly arranged on the connecting frame 221. A second spring 222 is fixedly arranged between the connecting frame 221 and the corresponding rectangular block 220.

[0062] As Figure 2 , Figure 6 , Figure 8 and Figure 11 As shown, the placement mechanism 2 further includes a locking unit 23 for locking the clamping state. The locking unit 23 includes an L-shaped block 230. An L-shaped block 230 is fixedly arranged on the lower end face of the connecting frame 221. A locking groove 231 is opened in the vertical section of the L-shaped block 230. A sliding plate 232 is slidably arranged on the horizontal column 203 along its axial direction. A locking block 233 is fixedly arranged on the sliding plate 232. A third spring 234 is arranged between the sliding plate 232 and the adjacent equally spaced strip 21. The elastic force generated by the deformation of the third spring 234 causes the locking block 233 to be inserted into the corresponding locking groove 231 to complete the locking after the two clamping plates 204 are clamped. Refer to Figure 9 .

[0063] In the initial state, the distance between the two clamping plates 204 on the same horizontal column 203 is smaller than the diameter of the ingot. The locking block 233 is located below the corresponding locking groove 231. At this time, because the third spring 234 is in a compressed state, the elastic force generated by the deformation of the third spring 234 causes the locking block 233 to abut against the vertical section of the L-shaped block 230. Then, the staff cooperate with the external lifting device two to lift the ingot to between the corresponding two clamping plates 204. During this process, the ingot presses against the corresponding two clamping plates 204. Therefore, the upper clamping plate 204 among the two clamping plates 204 corresponding to the same horizontal column 203 moves upward. Finally, the ingot is clamped between the corresponding two clamping plates 204. During this process, the connecting frame 221 moves upward, so that the second spring 222 is stretched. The elastic force generated by the stretching deformation of the second spring 222 causes the clamping plate 204 corresponding to the connecting frame 221 to initially press down the ingot. At the same time, as the connecting frame 221 drives the L-shaped block 230 to continuously move upward, the locking groove 231 gradually moves upward and aligns with the corresponding locking block 233 front and back. The elastic force generated by the deformation of the third spring 234 causes the locking block 233 to be inserted into the locking groove 231, completing the locking process of the clamping plate 204 on the connecting frame 221, that is, locking the clamping of the ingot by the corresponding two clamping plates 204, improving the stability during the rotational heat treatment process.

[0064] In summary, after the ingots are gradually hoisted and placed in the corresponding positions, all the ingots between the two mounting brackets 11 are clamped and locked. Secondly, the two sector plates 22 opposite to each other cooperate to tightly press the ingots in the front-back direction.

[0065] As Figure 2 , Figure 6 , Figure 7 and Figure 10 shown, the intermittent unit 4 further includes an unlocking group 41 for unlocking the locking state of the clamping plate 204. The unlocking group 41 includes a fixing frame 410. Two fixing frames 410 are fixedly arranged on the opposite surfaces of the two mounting brackets 11 and are distributed up and down. Two push rods 411 are arranged in a front-back distribution and are left-right staggered and slide through the fixing frame 410 from left to right. Arc-shaped unlocking strips 412 are fixedly arranged on the opposite surfaces of the corresponding two push rods 411. The inner arc surfaces of the unlocking strips 412 face upward. The unlocking strips 412 opposite to each other on the left and right are symmetric left and right, and the two unlocking strips 412 opposite to each other in the front and back are symmetric front and back. Taking the unlocking strip 412 at the rear right as an example, the rear end surface of the unlocking strip 412 at the rear right slopes forward from left to right.

[0066] As Figure 2 and Figure 10 shown, the intermittent unit 4 further includes a U-shaped frame 42. The fixing frame 410 and the adjacent mounting bracket 11 are jointly fixedly provided with a U-shaped frame 42. A driving rod 420 that slides up and down is jointly arranged on the two U-shaped frames 42 opposite to each other up and down (the driving rod 420 penetrates the sealing door 10 and contacts and is pushed by an external electric push rod to move up and down). A driving plate 421 corresponding to the U-shaped frame 42 is fixedly sleeved on the driving rod 420. The driving plate 421 is located below the corresponding U-shaped frame 42. A moving plate 422 that slides up and down is sleeved on the driving rod 420. A fourth spring 423 is fixedly arranged between the moving plate 422 and the driving plate 421. An articulated strip 424 is hinged left and right at the end surface of the moving plate 422 facing the adjacent mounting bracket 11 through a connecting block. The articulated strip 424 is hinged to the adjacent unlocking strip 412.

[0067] As Figure 8 , Figure 10 and Figure 11As shown, a gear 43 is rotatably provided on the vertical section of the U-shaped frame 42, two pushing racks 40 in the same group are slidably provided on the corresponding vertical section of the U-shaped frame 42, and the pushing racks 40 are meshed with the corresponding gears 43, and the two pushing racks 40 are symmetrical about the upper and lower centers of the axis of the gear 43, and a rack 2 430 staggered from the adjacent rack 1 is fixedly provided on the driving plate 421 through a connecting rod, and the rack 2 430 is meshed with the corresponding gear 43, and a square block 431 is fixedly provided on the outer arc surface of the clamping plate 204 on the upper side of the two clamping plates 204 on the same horizontal column 203, and a spiral spring 432 is fixedly provided between the horizontal column 203 and the corresponding rectangular block 220.

[0068] As the driving unit 3 works, it drives the two horizontal columns 203 facing each other front and back and the ingot to move synchronously from top to bottom to the vertical section of the path. When the corresponding two horizontal columns 203 move to the specified deflection position (at this time, the push rack 40 is opposite to the corresponding square block 431, and the unlocking bar 412 is opposite to the corresponding sliding plate 232), the driving unit 3 stops operating, so that all horizontal columns 203 stop moving. It should be noted that the length of the driving rod 420 meets the safe operating length, so that the external electric push rod is in a safe operating environment to avoid the high temperature of the heating box 1 affecting its normal operation process.

[0069] The spring 423 is compressed and the elastic force generated by the compression deformation of the spring 423 causes the moving plate 422 to continue to move upward, so that the inclined surface of the unlocking strip 412 presses the sliding plate 232, so that the sliding plate 232 drives the locking block 233 thereon to exit the locking groove 231, thereby completing the unlocking action of the corresponding upper clamping plate 204. Figure 9 .

[0070] Subsequently, as the driving rod 420 continues to move upward, the second rack 430 meshes with the corresponding gear 43, and in cooperation with the cooperation between the gear 43 and the corresponding pushing rack 40, the two adjacent pushing racks 40 move away from each other. The pushing rack 40 pushes the adjacent square block 431, causing the square block 431 to drive the clamping plate 204 thereon to deflect. During the deflection process of the clamping plate 204, the ingot is driven to deflect a certain angle by the acting thrust generated by the direct contact between the pushing rack 40 and the square block 431. In summary, by driving the ingot to deflect through the two deflection actions on the two U-shaped frames 42, the area blocked during the initial clamping process can be exposed, thus ensuring uniform heating of the ingot. It should be noted that during a single pushing and deflecting action, the square block 431 drives the clamping plate 204, the connecting frame 221, and the rectangular block 220 to rotate synchronously, causing the scroll spring 432 to deform. The external electric push rod releases the drive on the driving rod 420, and the driving rod 420 moves downward to reset the pushing rack 40. At the same time, the elastic force generated by the deformation of the scroll spring 432 causes the connecting frame 221 and the clamping plate 204 to reset. The square block 431 and the corresponding clamping plate 204 freely reset, and the clamping plate 204 is not subjected to other directional forces. At this time, the frictional force between the clamping plate 204 and the ingot during the reset process is not sufficient to cause the ingot to deflect therewith, resulting in relative movement between the ingot and the upper clamping plate 204, so that the originally blocked area of the ingot can be exposed.

[0071] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0072] In addition, the terms "first", "second", "No. 1", "No. 2" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "No. 1", "No. 2" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0073] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "arranged", "connected", "installed", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0074] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A heat treatment device for the preparation of high-purity ferroboron alloy, characterized in that, It includes a heating box. A sealing door is provided at the upper opening of the heating box. Two symmetrically arranged mounting brackets are slidably installed up and down in the heating box. A placing mechanism is commonly arranged between the two mounting brackets. The placing mechanism includes a path unit. A path unit for guiding the ingot to move along a specified route is commonly arranged between the two mounting brackets. The path unit includes semi-circular grooves. Two symmetrically arranged semi-circular grooves are penetratingly opened on the mounting bracket. A semi-circular plate is fixedly arranged on the mounting bracket. The semi-circular plate and the semi-circular grooves together form the path for the ingot to move. A plurality of moving rollers are arranged at equal intervals along the path in the semi-circular groove. Horizontally arranged columns with axes extending from front to back are rotatably installed on the opposite surfaces of two relatively front and rear moving rollers. Two arc-shaped clamping plates distributed up and down are arranged on the end surface of the horizontally arranged column far away from the mounting bracket. In the initial state, the distance between the two clamping plates on the same horizontally arranged column is smaller than the diameter of the ingot. A driving unit for driving the clamping plates to move along the path is arranged on the mounting bracket. An intermittent unit is commonly arranged on the two mounting brackets. The intermittent unit includes a pushing rack. Two groups of strip groups distributed up and down are arranged on the opposite surfaces of the two mounting brackets. The strip group includes two pushing racks distributed left and right. The pushing rack is used to push the clamping plate above the same side through the intermittent unit so that the ingot deflects. The placing mechanism further includes a sector plate. A sector plate is fixedly arranged on the end surface of the horizontally arranged column far away from the adjacent mounting bracket. The corresponding lower clamping plate is fixedly arranged on the sector plate. A rectangular block is rotatably sleeved on the horizontally arranged column. A connecting frame is arranged on the rectangular block. The rectangular block is slidably arranged on the connecting frame. The corresponding upper clamping plate is fixedly arranged on the connecting frame. A second spring is commonly fixedly arranged between the connecting frame and the corresponding rectangular block. The path unit further includes an equidistant strip. An equidistant strip is commonly arranged between two adjacent horizontally arranged columns. The placing mechanism further includes a locking unit for locking the clamping state. The locking unit includes an L-shaped block. An L-shaped block is fixedly arranged on the lower end surface of the connecting frame. A locking groove is opened on the vertical section of the L-shaped block. A sliding plate is slidably arranged on the horizontally arranged column along its axis direction. A locking block is fixedly arranged on the sliding plate. A third spring is arranged between the sliding plate and the adjacent equidistant strip. The elastic force generated by the deformation of the third spring makes the locking block snap into the corresponding locking groove to complete the locking after the two clamping plates clamp.

2. The heat treatment equipment for preparing high-purity ferroboron alloy according to claim 1, wherein: The equidistant strip and the horizontally arranged column are rotatably connected to each other. All the horizontally arranged columns corresponding to the same semi-circular groove are staggered front and back. A strengthening column with an axis extending from front to back is commonly fixedly arranged between two adjacent front and rear clamping plates. A placing groove is opened on the inner arc surface of the lower clamping plate corresponding to the same horizontally arranged column. A plurality of circumferentially distributed rolling rollers are rotatably arranged in the placing groove.

3. The heat treatment equipment for preparing high-purity ferroboron alloy according to claim 1, characterized in that: The driving unit includes fixed columns. Fixed columns with axes extending from front to back are fixedly arranged on the opposite surfaces of the front and rear moving rollers. Chain wheels I are fixedly arranged on the opposite surfaces of the front and rear fixed columns. Driving columns are rotatably arranged on the opposite surfaces of the two mounting frames. Two chain wheels II distributed front and rear are fixedly sleeved on the driving columns. Chains are commonly arranged between each of the two chain wheels II and all the chain wheels I corresponding to the corresponding semi-circular grooves. The adjacent two chains are staggered front and back. The load-bearing capacities of the chain wheels I, chain wheels II, and chains all meet the gravity pulling load requirements of multiple ingots.

4. The heat treatment equipment for preparing high-purity ferroboron alloy according to claim 3, characterized in that: On the opposite surfaces of the two mounting frames, a plurality of arc-shaped plates are fixedly arranged through connecting frames. The arc-shaped plates corresponding to the semi-circular grooves cooperate with each other to maintain the track shape of the chain.

5. The heat treatment equipment for preparing high-purity ferroboron alloy according to claim 3, characterized in that: A rectangular driving section is fixedly arranged on the end surface of the driving column away from the mounting frame. Driving shafts with axes extending from front to back and passing through the heating box are rotatably arranged on the front and rear sides of the heating box. A driving square tube is slidably sleeved on the front and rear ends of the driving shaft located inside the heating box. A first spring is fixedly arranged between the driving square tube and the heating box. The end surface of the driving square tube close to the mounting frame is an inclined surface that approaches the mounting frame from top to bottom. When the mounting frame moves downward, the driving section is inserted into the corresponding driving square tube.

6. The heat treatment equipment for preparing high-purity ferroboron alloy according to claim 1, characterized in that: The intermittent unit further includes an unlocking group for unlocking the locking state of the clamping plate. The unlocking group includes a fixed frame. Two fixed frames distributed up and down are fixedly arranged on the opposite surfaces of the two mounting frames. Two pushing rods distributed front and rear and staggered left and right slide through the fixed frame in the left-right direction. Arc-shaped unlocking strips are fixedly arranged on the opposite surfaces of the corresponding two pushing rods. The inner arc surface of the unlocking strip faces upward. The unlocking strips opposite left and right are symmetric left and right. The two unlocking strips opposite front and rear are symmetric front and rear. The rear end surface of the unlocking strip at the rear right side slopes forward from left to right.

7. The heat treatment equipment for preparing high-purity ferroboron alloy according to claim 6, characterized in that: The intermittent unit further includes a U-shaped frame. The fixed frame and the adjacent mounting frame are commonly fixedly provided with a U-shaped frame. A driving rod that slides up and down is commonly arranged on the two U-shaped frames opposite up and down. Driving plates corresponding to the U-shaped frames are fixedly sleeved on the driving rod. The driving plates are located below the corresponding U-shaped frames. A moving plate that slides up and down is sleeved on the driving rod. A fourth spring is fixedly arranged between the moving plate and the driving plate. An articulated strip is hinged left and right through a connecting block on the end surface of the moving plate facing the adjacent mounting frame. The articulated strip is hinged to the adjacent unlocking strip.

8. The heat treatment equipment for preparing high-purity ferroboron alloy according to claim 7, characterized in that: A gear is rotatably arranged on the vertical section of the U-shaped frame. Two pushing racks in the same group slide left and right on the vertical section of the corresponding U-shaped frame and the pushing racks mesh with the corresponding gear. The two pushing racks are symmetrically centered up and down about the axis of the gear. A second rack staggered from the adjacent first rack is fixedly arranged on the driving plate through a connecting rod. The second rack meshes with the corresponding gear. A square block is fixedly arranged on the outer arc surface of the upper clamping plate among the two clamping plates corresponding to the same horizontal column. A scroll spring is fixedly arranged between the horizontal column and the corresponding rectangular block.

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