A defect detection device and detection method for nickel-containing welding wire production

Abstract

The present invention relates to a defect detection device and detection method for nickel-containing welding wire production, comprising a mounting frame, a detection cylinder fixedly connected to the mounting frame, a through-hole provided in the detection cylinder, a clamping assembly installed on the detection cylinder, the clamping assembly including an electromagnetic push rod installed on the detection cylinder, a cross bar fixedly connected to the bottom of the electromagnetic push rod, clamping blocks installed on the front and rear sides of the cross bar, a sealing member provided at the front and rear ends of the detection cylinder, a circular arc notch adapted to the diameter of the nickel-containing welding wire provided at a position of the clamping block near the central axis of the through-hole of the detection cylinder, a plurality of clamping assemblies evenly spaced around the circumference of the detection cylinder, an air outlet provided on the inner wall of the through-hole of the detection cylinder and an air inlet provided on the outer wall of the detection cylinder, the air inlet being connected to the air outlet, a detection port connected to the through-hole of the detection cylinder provided on the detection cylinder, and an inductive pressure gauge installed on the detection port. The present invention has the beneficial effects of accurate detection effect, improved detection efficiency, and reduced labor intensity of workers.

Description

Technical Field

[0001] The present invention relates to the technical field of welding wire defect detection, in particular to the field of defect detection in a welding wire production process, and specifically refers to a defect detection device for nickel-containing welding wire production. Background Art

[0002] Welding wire, as a common metal welding material, is widely used in the welding of various metal materials. For example, nickel-containing welding wire, due to its excellent resistance to corrosion from active gases, caustic media, and reducing acids, combined with its high strength, good plasticity, ability to be deformed and formed, and weldable, is widely used in industries such as petrochemicals, metallurgy, atomic energy, marine development, aviation, and aerospace. It solves engineering corrosion problems that cannot be solved with conventional stainless steel and other metal and non-metal materials.

[0003] During the production process of nickel-containing welding wire, in addition to ensuring the smooth surface of the wire, the diameter of the nickel-containing welding wire of the same specification must also be consistent. This is to avoid changes in the current passing through the wire due to changes in the diameter of the nickel-containing welding wire during actual welding use, which in turn causes inconsistent welding results and affects welding quality. At the same time, inconsistent diameters of wires of the same specification can easily cause the wire to get stuck in the wire feeding mechanism of the automatic continuous welding equipment, thereby interrupting continuous welding and causing rework or scrapping of the welded products, affecting the normal production of the product and increasing the company's costs. Therefore, it is necessary to test the diameter of nickel-containing welding wire to prevent nickel-containing welding wire with diameter defects from entering the market.

[0004] The existing method for detecting the diameter of nickel-containing welding wire is usually to use manual sampling, that is, the staff uses measuring tools such as calipers to conduct sampling inspections on the completed nickel-containing welding wire products. However, during manual inspection, due to factors such as visual deviation and fatigue, it is very easy to cause problems such as inaccurate inspection data, affecting the inspection effect. At the same time, when the staff takes samples offline, the nickel-containing welding wire is usually already wound into coils, and the number of samples inspected and the sampling location of the samples are limited, which can easily cause welding wire with a diameter that does not meet the requirements to be mixed into the finished product. In addition, the manual sampling method also has the problems of high labor intensity and low work efficiency. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a defect detection device and a detection method for nickel-containing welding wire production, which are capable of detecting the diameter of the nickel-containing welding wire during the production process.

[0006] The present invention is achieved through the following technical solutions, which provide a defect detection device for nickel-containing welding wire production, including a mounting frame, which is arranged at a position between the fine drawing process and the layer winding process of the nickel-containing welding wire production line, a detection cylinder fixedly connected to the mounting frame, a through hole provided on the detection cylinder for the nickel-containing welding wire to pass through, a central axis of the through hole on the detection cylinder coincides with the central axis of the nickel-containing welding wire and a diameter of the through hole is larger than the diameter of the nickel-containing welding wire, a clamping assembly is installed on the detection cylinder, and the supporting assembly includes an electromagnetic push rod installed on the detection cylinder, a cross bar is fixedly connected to the bottom of the push rod of the electromagnetic push rod, the central axis of the cross bar is parallel to the central axis of the through hole of the detection cylinder, clamping blocks are installed on the front and rear sides of the cross bar, and the front and rear sides of the detection cylinder are provided with There is a seal for sealing the gap between the clamping block and the detection cylinder, and the clamping block is provided with an arc groove adapted to the diameter of the nickel-containing welding wire at a position on one side of the central axis of the through hole of the detection cylinder. The clamping assemblies are evenly distributed on the circumference of the detection cylinder. When the clamping blocks on the same side of the several clamping assemblies are centered, the several clamping blocks on the same side are seamlessly connected and the arc grooves of the several clamping blocks on the same side completely cover and fit on the cylindrical surface at the corresponding position of the nickel-containing welding wire. The detection cylinder is provided with space for the movement of the cross bar, the inner wall of the through hole of the detection cylinder is provided with an air outlet and the outer wall of the detection cylinder is provided with an air inlet, the air inlet is connected with the air outlet, the detection cylinder is provided with a detection port connected with the through hole of the detection cylinder, and an inductive pressure gauge is installed on the detection port.

[0007] In this solution, when the electromagnetic push rods in the several clamping assemblies with uniform circumferential intervals on the detection cylinder are energized, they can drive the cross bar and the several clamping blocks on the front and rear sides of the detection cylinder to move to the side away from the through hole of the detection cylinder. When the electromagnetic push rods in the several clamping assemblies with uniform circumferential intervals on the detection cylinder are de-energized, the cross bar and the several clamping blocks on the front and rear sides of the detection cylinder can be driven to align through the springs on the electromagnetic push rods. After alignment, the several clamping blocks on the same side are seamlessly connected, and the circular arc grooves on the several clamping blocks on the same side that are adapted to the diameter of the nickel-containing welding wire completely cover and fit on the cylindrical surface at the corresponding position of the nickel-containing welding wire. Since the surface of the nickel-containing welding wire is a smooth surface, after the several clamping blocks are centered, sealing surfaces are formed between the several clamping blocks on the same side and between the several clamping blocks on the same side and the surface of the nickel-containing welding wire. At the same time, since the front and back ends of the detection cylinder are provided with sealing members for sealing the gaps between the clamping blocks and the detection cylinder, Sealing component, therefore, when the clamp is centered, a sealed space is formed inside the through hole of the detection cylinder, and pressurized gas can be filled into the through hole of the detection cylinder through the air inlet on the detection cylinder and the air outlet on the inner wall of the through hole of the detection cylinder, and the gas pressure inside the through hole of the detection cylinder is detected and fed back by the inductive pressure gauge at the detection port. When the gas pressure fed back by the inductive pressure gauge is lower than the specified value, the nickel-containing welding wire production line automatically stops, and the staff processes the products that do not meet the welding wire diameter requirements, thereby completing the diameter detection of the nickel-containing welding wire. Since the central axis of the through hole of the detection cylinder coincides with the central axis of the nickel-containing welding wire, and the diameter of the through hole of the detection cylinder is larger than the diameter of the nickel-containing welding wire, the nickel-containing welding wire can be prevented from rubbing against the inner wall of the through hole of the detection cylinder in the standby state, which causes the nickel-containing welding wire to wear and affect the product quality of the nickel-containing welding wire. At the same time, during the detection, the nickel-containing welding wire can be prevented from blocking the air outlet of the detection cylinder and affecting the detection effect.

[0008] Preferably, the present invention also includes an accompanying component, which includes a base plate fixed at a position between the fine drawing process and the layer winding process of the nickel-containing welding wire production line, a servo motor is installed on the base plate, the output end of the servo motor is fixedly connected to a lead screw, the left and right sides of the lead screw are fixedly connected to an optical axis, the lead screw is threadedly connected to a drag plate through a lead screw nut, the mounting frame is fixed to the drag plate, the drag plate is slidably connected to the optical axis, and the central axes of the lead screw and the optical axis are parallel to the central axis of the nickel-containing welding wire.

[0009] In this optimization scheme, the accompanying component can make the detection cylinder move according to the moving speed of the nickel-containing welding wire, so that the detection cylinder and the nickel-containing welding wire are relatively stationary, thereby avoiding friction between the nickel-containing welding wire and the clamping jaws after the clamping jaws are centered, causing damage to the nickel-containing welding wire and affecting product quality.

[0010] Preferably, removable end covers are installed at both the front and rear ends of the detection cylinder, and a through hole is provided on the end cover. The central axis of the through hole on the end cover is concentric with the through hole on the detection cylinder and has the same diameter. A space for movement of the cross bar is provided on the side of the end cover close to the detection cylinder, and a guide column is provided in the space for movement of the cross bar on the end cover. The central axis of the guide column and the central axis of the electromagnetic push rod are located in the same reference plane and are parallel to each other, and the cross bar is slidably connected to the guide column.

[0011] In this optimized solution, the guide column provided on the end cover can keep the cross bar stable during the movement, thus preventing the cross bar from warping, thereby ensuring the accuracy of the diameter detection of the nickel-containing welding wire.

[0012] Preferably, the cross bar is provided with a sliding groove for the clamping block to adjust its front and rear position, and the end cover is provided with a plane for applying pre-pressure to the clamping block at a position close to one side of the detection cylinder.

[0013] In this optimized solution, the sliding groove provided on the cross bar for adjusting the front and rear positions of the clamping block can make the distance between the front and rear ends of the detection cylinder and the corresponding clamping block meet the requirements of sealing and clamping block movement. At the same time, the plane for applying pre-pressure to the clamping block provided at the position of the end cover close to the side of the detection cylinder can apply pre-pressure to the seal through the clamping block when the end cover is installed, thereby ensuring the sealing effect between the clamping block and the detection cylinder.

[0014] Preferably, when the push rod of the electromagnetic push rod moves to the farthest point from the through hole of the detection cylinder, one end of the clamping block close to the central axis of the through hole of the detection cylinder is flush with the inner wall of the through hole of the detection cylinder.

[0015] In this optimized solution, when the push rod of the electromagnetic push rod moves to the farthest distance from the through hole of the detection cylinder, the end of the clamp close to the central axis of the through hole of the detection cylinder is flush with the inner wall of the through hole of the detection cylinder, thereby avoiding friction between the clamp and the diameter of the nickel-containing welding wire when in standby state.

[0016] This solution also provides a detection method using the above-mentioned defect detection device for nickel-containing welding wire production, which realizes the detection of the diameter of the nickel-containing welding wire during the production process of the nickel-containing welding wire, specifically including the following aspects:

[0017] First, the electronic control system controls the servo motor to drive the detection cylinder from the standby position to move in the direction and speed of the nickel-containing welding wire through the lead screw and the carriage. When the detection cylinder and the nickel-containing welding wire are relatively stationary, the clamping blocks in the several clamping assemblies are aligned. Then, pressurized gas is injected into the through-hole of the detection cylinder through the air inlet and outlet.

[0018] If the diameters of the nickel-containing welding wires at the corresponding positions of the clamping blocks on the front and rear sides of the detection cylinder are different, when the electromagnetic push rod drives the cross bar and the clamping block to align through the spring, the nickel-containing welding wire at the position with a relatively larger diameter will first contact the clamping block and prevent the cross bar from moving further. At this time, there will be a gap between the cylindrical surface of the nickel-containing welding wire at the position with a relatively smaller diameter and the clamping block. The gas pressure inside the through hole of the detection cylinder fed back by the inductive pressure gauge will never reach the specified pressure within the specified time. At this time, the electronic control system automatically controls the nickel-containing welding wire production line to stop according to the signal fed back by the inductive pressure gauge, and the staff will conduct inspection and treatment.

[0019] If the diameters of the nickel-containing welding wires at the corresponding positions of the clamping blocks on the front and rear sides of the detection cylinder are the same or the diameter difference is within the specified range, the electromagnetic push rod will drive the cross bar and the clamping block to align through the spring, and the gas pressure inside the through hole of the detection cylinder fed back by the inductive pressure gauge will be maintained above the specified air pressure within the specified time. After the specified time is reached, the electronic control system automatically controls the electromagnetic push rod in the clamping assembly to energize, retract the clamping block, and drive the detection cylinder back to the standby position through the accompanying assembly to prepare for the next test.

[0020] The beneficial effects of the present invention are as follows: by utilizing the device of the present invention, the diameter of the nickel-containing welding wire can be frequently detected during the production process of the nickel-containing welding wire. Compared with the manual sampling method, the detection effect is more accurate, and the occurrence of inaccurate detection data caused by human factors is avoided; it is not affected by human factors such as illness and fatigue of the staff, and the frequency and efficiency of detection are greatly improved; it avoids the mixing of defective products into the finished product due to restrictions on the sampling position and the number of samples during manual sampling, and at the same time can greatly reduce the labor intensity of the staff. In addition, since the device of the present invention is relatively stationary with the nickel-containing welding wire during the detection process, damage to the surface of the nickel-containing welding wire due to detection is avoided, thereby ensuring the surface quality of the nickel-containing welding wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 for Figure 1 Front view of

[0023] Figure 3 It is a schematic diagram of the local structure of the present invention;

[0024] Figure 4 Schematic diagram of the structure of the detection tube in the present invention;

[0025] Figure 5 Schematic diagram of the structure of the end cover in the present invention;

[0026] As shown in the figure:

[0027] 1. Mounting frame, 2. Detection tube, 3. Clamping assembly, 4. Traveling assembly, 5. End cap, 6. Air inlet, 7. Air outlet, 8. Detection port, 9. Inductive pressure gauge, 10. Guide column

[0028] 301, electromagnetic push rod, 302, cross bar, 303, clamping block,

[0029] 401, base plate, 402, servo motor, 403, lead screw, 404, optical axis, 405, carriage. DETAILED DESCRIPTION

[0030] Nickel-containing welding wire has good resistance to corrosion from active gases, caustic media, and reducing acid media. It also has the characteristics of high welding strength, good plasticity, hot and cold deformation, processing and welding, and can solve engineering corrosion problems that cannot be solved by general stainless steel and other metal and non-metallic materials.

[0031] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0032] like Figures 1 to 5The defect detection device for nickel-containing welding wire production shown in the figure includes two parallel mounting frames 1, and the mounting frames 1 are arranged at a position between the fine drawing process and the layer winding process of the nickel-containing welding wire production line. A detection cylinder 2 is fixedly connected to the two mounting frames 1, and an inner cavity is provided inside the detection cylinder 2. The inner cavity and the outer wall of the detection cylinder 2 are connected by four groups of connecting columns evenly spaced at circumferential intervals. Each group of connecting columns has four evenly spaced at axial intervals along the detection cylinder 2. A through hole for the nickel-containing welding wire to pass through is provided on the inner cavity of the detection cylinder 2. The central axis of the through hole on the detection cylinder 2 coincides with the central axis of the nickel-containing welding wire, and the diameter of the through hole is larger than the diameter of the nickel-containing welding wire. 2 is provided with a mounting surface at the center of the outer wall, and a clamping assembly 3 is installed on the detection cylinder 2. The clamping assembly 3 includes an electromagnetic push rod 301 installed on the mounting surface of the detection cylinder 2. The central axis of the push rod of the electromagnetic push rod 301 is perpendicular to the central axis of the through hole of the detection cylinder 2. A cross bar 302 is fixed to the bottom of the push rod of the electromagnetic push rod 301. The central axis of the cross bar 302 is parallel to the central axis of the through hole of the detection cylinder 2. Clamping blocks 303 are installed on the front and rear sides of the cross bar 302. Seals for sealing the gap between the clamping block 303 and the detection cylinder 2 are provided at the front and rear ends of the detection cylinder 2. The clamping block 303 is close to the central axis of the through hole of the detection cylinder 2. A circular arc notch adapted to the diameter of the nickel-containing welding wire is provided at the side position, and four clamping components 3 are evenly spaced on the circumference of the detection cylinder 2. When the four clamping blocks 303 on the same side of the four clamping components 3 are aligned, the four clamping blocks 303 on the same side are seamlessly connected, and the circular arc notches of the four clamping blocks 303 on the same side completely cover and fit on the cylindrical surface at the corresponding position of the nickel-containing welding wire. A space for the cross bar 302 to move is provided between the outer wall and the inner cavity of the detection cylinder 2, and a plurality of air outlets 7 are provided on the inner wall of the through hole of the detection cylinder 2 at the positions corresponding to the plurality of connecting columns, and an air inlet 6 is provided on the outer wall of the detection cylinder 2. All connecting columns are provided with ventilation channels, and four inlet channels are provided inside the outer wall of the detection cylinder 2. The central axes of the four inlet channels are parallel to the central axis of the detection cylinder 2. The four inlet channels correspond to the positions of four groups of connecting columns uniformly spaced around the circumference. One end of the ventilation channel in the connecting column is connected to the air outlet 7 at the corresponding position, and the other end of the ventilation channel is connected to the inlet channel at the corresponding position. An annular flow channel for connecting the four inlet channels is also provided inside the outer wall of the detection cylinder 2, and the air inlet 6 is connected to the annular flow channel. A detection port 8 connected to the through hole of the detection cylinder 2 is provided on the detection cylinder 2, and an inductive pressure gauge 9 is installed on the detection cylinder 2;

[0033] The present invention also includes an accompanying assembly 4, which includes a base plate 401 fixed at a position between the fine drawing process and the layer winding process of the nickel-containing welding wire production line. A servo motor 402 is installed on the base plate 401. The output end of the servo motor 402 is fixedly connected to a lead screw 403. Optical axes 404 are fixedly connected to the left and right sides of the lead screw 403. The lead screw 403 is threadedly connected to a carriage 405 through a lead screw nut. The mounting frame 1 is fixed to the carriage 405. The carriage 405 is in sliding connection with the optical axis 404. The central axes of the lead screw 403 and the optical axis 404 are parallel to the central axis of the nickel-containing welding wire.

[0034] Removable end caps 5 are installed at both the front and rear ends of the detection cylinder 2. The end caps 5 are provided with through holes. The central axis of the through hole on the end cap 5 is concentric with the through hole on the detection cylinder 2 and has the same diameter. A space for the crossbar 302 to move is provided on the side of the end cap 5 close to the detection cylinder 2. A guide column 10 is provided in the space for the crossbar 302 to move on the end cap 5. The central axis of the guide column 10 and the central axis of the electromagnetic push rod 301 are located in the same reference plane and are parallel to each other. The crossbar 302 is in sliding connection with the guide column 10.

[0035] The crossbar 302 is provided with a slide groove for the clamping block 303 to adjust its front and rear position, and a flat surface for applying pre-pressure to the clamping block 303 is provided at a position on the side of the end cover 5 close to the detection cylinder 2;

[0036] When the push rod of the electromagnetic push rod 301 moves to the farthest point from the through hole of the detection cylinder 2 , one end of the clamping block 303 close to the central axis of the through hole of the detection cylinder 2 is flush with the inner wall of the through hole of the detection cylinder 2 .

[0037] The detection method performed using a defect detection device for nickel-containing welding wire production in this embodiment includes the following aspects:

[0038] First, the electronic control system controls the servo motor to drive the detection cylinder from the standby position to move in the direction and speed of the nickel-containing welding wire through the lead screw and the carriage. When the detection cylinder and the nickel-containing welding wire are relatively stationary, the clamping blocks in the several clamping assemblies are aligned. Then, pressurized gas is injected into the through-hole of the detection cylinder through the air inlet and outlet.

[0039] If the diameters of the nickel-containing welding wires at the corresponding positions of the clamping blocks on the front and rear sides of the detection cylinder are different, when the electromagnetic push rod drives the cross bar and the clamping block to align through the spring, the nickel-containing welding wire at the position with a relatively larger diameter will first contact the clamping block and prevent the cross bar from moving further. At this time, there will be a gap between the cylindrical surface of the nickel-containing welding wire at the position with a relatively smaller diameter and the clamping block. The gas pressure inside the through hole of the detection cylinder fed back by the inductive pressure gauge will not be able to remain above the specified pressure within the specified time. At this time, the electronic control system automatically controls the nickel-containing welding wire production line to stop according to the signal fed back by the inductive pressure gauge, and the staff will conduct inspection and treatment.

[0040] If the diameters of the nickel-containing welding wires at the corresponding positions of the clamping blocks on the front and rear sides of the detection cylinder are the same or the diameter difference is within the specified range, the electromagnetic push rod will drive the cross bar and the clamping block to align through the spring, and the gas pressure inside the through hole of the detection cylinder fed back by the inductive pressure gauge will be maintained above the specified air pressure within the specified time. After the specified time is reached, the electronic control system automatically controls the electromagnetic push rod in the clamping assembly to energize, retract the clamping block, and drive the detection cylinder back to the standby position through the accompanying assembly to prepare for the next test.

[0041] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by adopting existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical solutions of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A defect detection device for nickel-containing welding wire production, characterized in that: The invention comprises a mounting frame (1), wherein the mounting frame (1) is arranged at a position between a fine drawing process and a layer winding process of a nickel-containing welding wire production line, wherein a detection cylinder (2) is fixedly connected to the mounting frame (1), wherein the detection cylinder (2) is provided with a through hole for the nickel-containing welding wire to pass through, wherein the central axis of the through hole on the detection cylinder (2) coincides with the central axis of the nickel-containing welding wire and the diameter of the through hole is larger than the diameter of the nickel-containing welding wire, wherein a clamping assembly (3) is installed on the detection cylinder (2), wherein the clamping assembly (3) comprises an electromagnetic push rod (301) installed on the detection cylinder (2), wherein the bottom of the push rod of the electromagnetic push rod (301) is fixedly connected to a cross bar (302), wherein the central axis of the cross bar (302) is parallel to the central axis of the through hole of the detection cylinder (2), wherein clamping blocks (303) are installed on both the front and rear sides of the cross bar (302), and wherein both the front and rear ends of the detection cylinder (2) are provided with a clamping block (303) for sealing the gap between the clamping block (303) and the detection cylinder (2). The sealing member is provided with an arc notch adapted to the diameter of the nickel-containing welding wire at a position close to the central axis of the through hole of the detection cylinder (2). The clamping assembly (3) is evenly distributed with a plurality of clamping blocks (303) on the circumference of the detection cylinder (2). When the clamping blocks (303) on the same side of the plurality of clamping assemblies (3) are aligned, the plurality of clamping blocks (303) on the same side are seamlessly connected and the arc notches of the plurality of clamping blocks (303) on the same side completely cover and fit on the detection cylinder (2). On the cylindrical surface at the position corresponding to the nickel-containing welding wire, a space for the crossbar (302) to move is provided in the detection cylinder (2), an air outlet (7) is provided on the inner wall of the through hole of the detection cylinder (2), and an air inlet (6) is provided on the outer wall of the detection cylinder (2), the air inlet (6) is connected to the air outlet (7), the detection cylinder (2) is provided with a detection port (8) connected to the through hole of the detection cylinder (2), and an inductive pressure gauge (9) is installed on the detection port (8); The invention also includes an accompanying component (4), the accompanying component (4) including a base plate (401) fixed at a position between the fine drawing process and the layer winding process of the nickel-containing welding wire production line, a servo motor (402) being installed on the base plate (401), a lead screw (403) being fixedly connected to the output end of the servo motor (402), an optical axis (404) being fixedly connected to the left and right sides of the lead screw (403), the lead screw (403) being threadedly connected to a carriage (405) via a lead screw nut, the mounting frame (1) being fixedly connected to the carriage (405), the carriage (405) being in sliding connection with the optical axis (404), and the central axes of the lead screw (403) and the optical axis (404) being parallel to the central axis of the nickel-containing welding wire.

2. A defect detection device for nickel-containing welding wire production according to claim 1, characterized in that: The front and rear ends of the detection cylinder (2) are both equipped with detachable end covers (5), and the end covers (5) are provided with a through hole. The central axis of the through hole on the end cover (5) is concentric with the through hole on the detection cylinder (2) and has the same diameter. A space for the cross bar (302) to move is provided on the side of the end cover (5) close to the detection cylinder (2). A guide column (10) is provided in the space for the cross bar (302) to move on the end cover (5). The central axis of the guide column (10) and the central axis of the electromagnetic push rod (301) are located in the same reference plane and are parallel to each other. The cross bar (302) and the guide column (10) are in sliding connection.

3. A defect detection device for nickel-containing welding wire production according to claim 2, characterized in that: The crossbar (302) is provided with a slide groove for the clamping block (303) to adjust its front and rear positions, and the end cover (5) is provided with a plane for applying pre-pressure to the clamping block (303) at a position close to one side of the detection cylinder (2).

4. A defect detection device for nickel-containing welding wire production according to claim 3, characterized in that: When the push rod of the electromagnetic push rod (301) moves to the farthest point from the through hole of the detection cylinder (2), the end of the clamping block (303) close to the central axis of the through hole of the detection cylinder (2) is flush with the inner wall of the through hole of the detection cylinder (2).

5. The detection method performed by the defect detection device for nickel-containing welding wire production according to any one of claims 1 to 4, characterized in that: Including the following aspects: First, the electronic control system controls the servo motor to drive the detection cylinder from the standby position to move in the direction and speed of the nickel-containing welding wire through the lead screw and the carriage. When the detection cylinder and the nickel-containing welding wire are relatively stationary, the clamping blocks in the several clamping assemblies are aligned. Then, pressurized gas is injected into the through-hole of the detection cylinder through the air inlet and outlet. If the diameters of the nickel-containing welding wires at the corresponding positions of the clamping blocks on the front and rear sides of the detection cylinder are different, when the electromagnetic push rod drives the cross bar and the clamping block to align through the spring, the nickel-containing welding wire at the position with a relatively larger diameter will first contact the clamping block and prevent the cross bar from moving further. At this time, there will be a gap between the cylindrical surface of the nickel-containing welding wire at the position with a relatively smaller diameter and the clamping block. The gas pressure inside the through hole of the detection cylinder fed back by the inductive pressure gauge will not be able to remain above the specified pressure within the specified time. At this time, the electronic control system automatically controls the nickel-containing welding wire production line to stop according to the signal fed back by the inductive pressure gauge, and the staff will conduct inspection and treatment. If the diameters of the nickel-containing welding wires at the corresponding positions of the clamping blocks on the front and rear sides of the detection cylinder are the same or the diameter difference is within the specified range, the electromagnetic push rod will drive the cross bar and the clamping block to align through the spring, and the gas pressure inside the through hole of the detection cylinder fed back by the inductive pressure gauge will be maintained above the specified air pressure within the specified time. After the specified time is reached, the electronic control system automatically controls the electromagnetic push rod in the clamping assembly to energize, retract the clamping block, and drive the detection cylinder back to the standby position through the accompanying assembly to prepare for the next test.

Images