Pipe inner wall and wire heat treatment test system

Abstract

The invention provides a pipe inner wall and wire heat treatment test system, and relates to a heat treatment test system, the pipe inner wall and wire heat treatment test system comprises a fixed seat and a movable seat which is slidably mounted on a table top and can move towards or away from the fixed seat, and the fixed seat and the movable seat are respectively provided with a group of chuck main bodies; a group of electrode plates are fixed on each clamping jaw of the chuck main body, a group of copper pressing blocks are connected to each group of electrode plates, the plurality of groups of copper pressing blocks are arranged around the center of the chuck main body and are used for moving along with the clamping jaws to circumferentially clamp or loosen a wire, and the electrode plates on one group of chuck main body are connected with a positive electrode of a pulse power supply to form a positive electrode pressing plate; the electrode plate on the other group of chuck main body is connected with the negative electrode of the pulse power supply to form a negative electrode pressing plate, a cooling pipeline is arranged in the electrode plate, and an inlet and an outlet of the cooling pipeline are circularly connected with an external cooling-water machine through a water-cooling connector. And meanwhile, the accuracy of the heat treatment effect is better.

Description

Technical Field

[0001] The invention relates to a heat treatment test system, in particular to a heat treatment test system for inner walls of pipes and wires. Background Art

[0002] In response to the heat treatment test needs of the inner wall of the pipe and wire, special equipment must be selected according to the material properties and process requirements (such as heating method, temperature control accuracy, cooling rate, etc.). In existing technologies, the heat treatment test equipment for the inner wall of the pipe and wire includes: heat treatment furnaces, brazing furnaces, muffle furnaces, etc. During operation, the pipe or wire moves continuously in the furnace, and is heated, kept warm and cooled through different temperature zones. Under this heating method, flexibility is often poor. That is, the existing technology may adopt an overall heating method, which often makes it difficult to achieve precise heating of any position on the inner wall of the pipe, or difficult to adapt to wires of different lengths and diameters. The versatility of the equipment is also poor. That is, the existing technology may require customized special heat treatment equipment for pipes or wires of different specifications, which increases cost and complexity. At the same time, the accuracy of the heat treatment effect is also poor. That is, the existing technology may find it difficult to accurately control the heat treatment effect, resulting in unstable performance of the pipe or wire. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a pipe inner wall and wire heat treatment test system, which not only has a more flexible heating method, but also has better versatility of equipment, and at the same time, the accuracy of the heat treatment effect is also better.

[0004] The present invention provides the following technical solutions: A wire heat treatment test system includes a fixed seat fixed on a table and a movable seat slidably mounted on the table and capable of moving toward or away from the fixed seat. A group of chuck bodies are respectively installed on the fixed seat and the movable seat. The two groups of chuck bodies are arranged opposite to each other, and a group of electrode plates are fixed on each claw of the chuck body. The chuck body adopts the K11-80 three-jaw chuck in the prior art. This is the prior art and will not be described in detail here. A group of copper pressure blocks is connected to each group of electrode plates. Multiple groups of copper pressure blocks are arranged around the center of the chuck body for clamping or loosening the wire in a circumferential direction as the claws move. The electrode plates on a group of chuck bodies are connected to the positive pole of the pulse power supply. To form a positive pressure plate, the electrode plate on the other set of chuck bodies is connected to the negative pole of the pulse power supply to form a negative pressure plate. At this point, the wire is clamped between the two chucks, and the movable seat is pushed to a position suitable for clamping the wire and then fixed, and the chuck body is driven so that its claws can clamp or loosen the wire. The negative pressure plate is connected to the negative pole of the pulse power supply; the positive pressure plate is connected to the positive pole of the pulse power supply, and then the voltage and frequency of the pulse power supply can be set according to needs to make the wire meet the ideal power heating requirements. A cooling pipe is opened in the electrode plate, and the inlet and outlet of the cooling pipe are connected to the external chiller through a water-cooling joint to ensure that the electrode plate does not overheat when powered on for heating.

[0005] Preferably, a slide rail is provided on the table, and the movable seat is slidably mounted on the slide rail through a slider, and a locking screw is also screwed on the movable seat. When the movable seat is moved to a suitable position, the locking screw is tightened so that the locking screw is pressed against the table, thereby achieving fixation of the movable tailstock, which is more flexible and simpler.

[0006] A pipe inner wall heat treatment test system is based on the above-mentioned wire heat treatment test system and also includes a welding wheel assembly abutting the inner wall of the pipe. The positive pole of the pulse power supply connected to the electrode plate is replaced by a connection with the welding wheel assembly, and a copper expansion block is also provided on the side of each set of electrode plates facing away from the copper pressure block. Multiple groups of copper expansion blocks are arranged around the center of the chuck body and are used to clamp or loosen the inner wall of the pipe circumferentially as the claws move.

[0007] Preferably, the welding wheel assembly includes an electrode rod passing through the center of the chuck body to fix the copper welding wheel, the electrode rod is hollow, and a return pipe is also provided at the center thereof, one end of the electrode rod is connected to the water inlet joint, and the other end of the electrode rod is sealed. After water enters the electrode rod from the water inlet joint, the water flows to the other end of the electrode rod and enters the return pipe from the open end of the return pipe. In the return pipe, the water flows from the open end of the return pipe to the sealed end of the return pipe, and then flows out from the return pipe passing through the electrode rod. At this point, when connected to the positive pole of the external pulse power supply, the electrode rod can be prevented from being damaged by excessive heat generated during the power-on process, so that the electrode rod has a water cooling function, and external cooling water flows in from the water inlet joint and flows out from the return joint.

[0008] Preferably, the sealing end of the electrode rod is connected to a welding wheel seat through a clamp, and the copper welding wheel is installed on the welding wheel seat as a roller rolling along the inner wall of the pipe, and the clamp is tightly clamped on the welding wheel seat, and one side of the clamp is also provided with a long strip guide groove extending along the Z direction, and the bolt on the welding wheel seat is connected to the clamp after passing through the guide groove, and a group of springs compressed along the Z direction are also provided in the welding wheel seat, and a group of clamping wheels are pressed on the top of the spring through a guide sleeve, and the axial direction of the clamping wheel and the copper welding wheel is Y direction, and they are used to press on both sides of the inner wall of the pipe with an axial direction in the X direction under the pressure of the spring, wherein the long strip guide groove provides adaptive adjustment of the welding wheel seat relative to the clamp along the Z direction when the spring is pressed, so as to cooperate with the clamping wheel to always have good contact with the inner wall of the pipe.

[0009] Preferably, a group of adjusting screws are screwed onto the welding wheel seat, and the ends of the adjusting screws press against the ends of the springs to flexibly adjust the pre-compression force of the spring pressing the pressing wheel.

[0010] Preferably, the electrode rod is screwed onto a set of screw rods through a bracket, and the screw rods are mounted on a table and driven to rotate by a motor. At this point, the electrode rods can be driven by the screw rods to drive the copper welding wheel to move and adjust along the X direction, and a set of positive electrode connection blocks are also provided outside the electrode rods, and the positive electrode connection blocks are connected to the positive pole of the pulse power supply.

[0011] The beneficial effects of the present invention are: Compared with the existing technology, the pipe inner wall and wire heat treatment test system of the present invention has significantly improved flexibility, adaptability and treatment effect, as shown in the following: 1. Flexible heating method: Pipe inner wall heating: The welding wheel assembly can be electrically heated at any position on the inner wall of the pipe. This heating method can accurately control the heating position to meet the heat treatment requirements of different parts of the inner wall of the pipe; Wire heating: The copper clamp can clamp wires of different lengths and diameters, and heat the entire wire through electricity to achieve overall or partial heat treatment of the wire; 2. Wide adaptability: Pipe adaptability: The system of the present invention can adapt to pipes of various lengths and inner diameters, eliminating the need to customize specialized heat treatment equipment for pipes of different specifications, thus reducing costs and improving efficiency. Wire adaptability: It is also applicable to wires of various lengths and outer diameters, meeting the heat treatment requirements of different wire products; 3. Accurate heat treatment effect: By precisely controlling the heating position and heating parameters, the hardness and metallographic structure of the inner wall of the pipe or wire can be changed, so that different positions of the pipe or wire can meet specific hardness, strength, stiffness and other requirements; This precise heat treatment effect helps to improve the overall performance of the tube or wire, so that it can reach the optimal usage state. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 This is a front view of the present invention in Example 1; Figure 2 It is a front cross-sectional view of the present invention; Figure 3 yes Figure 2 A side cross-sectional view of Figure 4 This is a front view of the present invention in Example 2; Figure 5 yes Figure 4 Schematic diagram of the structure after the pipe is removed; Figure 6 It is a structural diagram of the welding wheel assembly; Figure 7 yes Figure 4 Structural cross-sectional view in; Figure 8 yes Figure 7 A partial schematic diagram of Figure 9 yes Figure 5 A side cross-sectional view of Markings in the figure: 1. Table; 2. Fixed seat; 3. Movable seat; 4. Chuck body; 5. Electrode plate; 6. Copper pressure block; 7. Wire; 8. Water-cooling joint; 9. Slide rail; 10. Inner wall of pipe; 11. Copper expansion block; 12. Electrode rod; 13. Return pipe; 14. Water inlet joint; 15. Return joint; 16. Welding wheel seat; 17. Copper welding wheel; 18. Clamp; 19. Guide groove; 20. Bolt; 21. Spring; 22. Guide sleeve; 23. Clamping wheel; 24. Adjusting screw; 25. Bracket; 26. Screw; 27. Motor; 28. Positive terminal connection block. DETAILED DESCRIPTION

[0013] Example 1 like Figure 1-3As shown, a wire heat treatment test system, in this embodiment, includes a fixed seat 2 fixed on a table 1 and a movable seat 3 slidably mounted on the table 1 and capable of moving toward or away from the fixed seat 2, a group of chuck bodies 4 are respectively installed on the fixed seat 2 and the movable seat 3, the two groups of chuck bodies 4 are arranged opposite to each other, and a group of electrode plates 5 are fixed on each claw of the chuck body 4, the chuck body 4 adopts the K11-80 three-jaw chuck in the prior art, when the knob is adjusted forward or reverse with a wrench, the pipe or wire 7 can be clamped or loosened; this is the prior art and will not be described in detail here, each group of electrode plates 5 is connected to a group of copper pressure blocks 6, and multiple groups of copper pressure blocks 6 are arranged around the center of the chuck body 4 for clamping or loosening the wire 7 in the circumferential direction as the claws move, The electrode plates 5 on one group of chuck bodies 4 are connected to the positive pole of the pulse power supply to form a positive pressure plate, and the electrode plates 5 on the other group of chuck bodies 4 are connected to the negative pole of the pulse power supply to form a negative pressure plate. At this point, the wire 7 is clamped between the two chucks, and the movable seat 3 is pushed to a position suitable for clamping the wire 7 and then fixed, and the chuck body 4 is driven so that its claws can clamp or release the wire 7. The negative pressure plate is connected to the negative pole of the pulse power supply; the positive pressure plate is connected to the positive pole of the pulse power supply, and then the voltage and frequency of the pulse power supply can be set according to requirements to make the wire 7 meet the ideal power-on heating requirements. A cooling pipe is opened in the electrode plate 5, and the inlet and outlet of the cooling pipe are connected to the external chiller through a water-cooling joint 8 for circulation, which can ensure that the electrode plate 5 does not overheat during power-on heating.

[0014] A slide rail 9 is provided on the table 1, and the movable seat 3 is slidably mounted on the slide rail 9 through a slider, and a locking screw is also screwed on the movable seat 3. When the movable seat 3 is moved to a suitable position, the locking screw is tightened so that the locking screw is pressed against the table 1, thereby achieving the fixing of the movable tailstock, which is more flexible and simpler.

[0015] Example 2 like Figure 4-9 As shown, a pipe inner wall heat treatment test system is based on the above-mentioned wire 7 heat treatment test system, and also includes a welding wheel assembly abutting the pipe inner wall 10, and the positive pole of the pulse power supply connected to the electrode plate 5 is replaced by a connection with the welding wheel assembly, and a copper expansion block 11 is also provided on the side of each group of electrode plates 5 away from the copper pressure block 6. Multiple groups of copper expansion blocks 11 are arranged around the center of the chuck body 4 and are used to move with the claws to circumferentially clamp or loosen the pipe inner wall 10.

[0016] The welding wheel assembly includes an electrode rod 12 that passes through the center of the chuck body 4 to fix the copper welding wheel 17. When the wire 7 is replaced with the inner wall of the tube 10, it is only necessary to insert the electrode rod 12 into the chuck body 4 and connect the copper welding wheel 17. Among them, the electrode rod 12 is hollow, and a return pipe 13 is also provided in the center. One end of the electrode rod 12 is connected to the water inlet joint 14, and the other end of the electrode rod 12 is sealed. After water enters the water inlet joint 14, the water flows to the other end of the electrode rod 12 and enters the return pipe 13 from the open end of the return pipe 13. In the return pipe 13, the water flows from the open end of the return pipe 13 to the sealed end of the return pipe 13, and then flows out from the return pipe 15 that passes through the electrode rod 12. At this point, when connected to the positive pole of the external pulse power supply, the electrode rod 12 can be prevented from being damaged by excessive heat generated during the power-on process, so that the electrode rod 12 has a water cooling function, and external cooling water flows in from the water inlet joint 14 and flows out from the return pipe 15.

[0017] The sealed end of the electrode rod 12 is connected to a welding wheel seat 16 through a clamp 18. The copper welding wheel 17 is installed on the welding wheel seat 16 and serves as a roller that rolls along the inner wall 10 of the pipe. The clamp 18 is tightly clamped on the welding wheel seat 16. One side of the clamp 18 is also provided with a long strip guide groove 19 extending along the Z direction. The bolt 20 on the welding wheel seat 16 is connected to the clamp 18 after passing through the guide groove 19. A group of elastic springs compressed along the Z direction are also provided in the welding wheel seat 16. Spring 21, the top of the spring 21 is pressed by a group of clamping wheels 23 through a guide sleeve 22. The axial direction of the clamping wheel 23 and the copper welding wheel 17 is Y-direction, and under the pressure of the spring 21, they are used to press on both sides of the inner wall 10 of the pipe with the axial direction in the X-direction. Among them, the long guide groove 19 provides adaptive adjustment of the welding wheel seat 16 relative to the clamp 18 along the Z direction when the spring 21 is pressed, so as to cooperate with the clamping wheel 23 to always have good contact with the inner wall 10 of the pipe.

[0018] A set of adjusting screws 24 are screwed onto the welding wheel seat 16 , and the ends of the adjusting screws 24 press against the ends of the springs 21 to flexibly adjust the pre-compression force of the springs 21 pressing the pressing wheel 23 .

[0019] The electrode rod 12 is screwed onto a set of screw rods 26 through a bracket 25. The screw rods 26 are mounted on the table 1 and driven to rotate by a motor 27. At this point, the electrode rod 12 can be driven by the screw rod 26 to drive the copper welding wheel 17 to move along the X direction. A set of positive electrode connection blocks 28 are also provided outside the electrode rod 12. The positive electrode connection block 28 is connected to the positive pole of the pulse power supply.

[0020] The working principle of the present invention is: The present invention provides a heat treatment test system for the inner wall of a pipe 10 and a wire 7. Not only is the heating method more flexible, but the versatility of the equipment is also better, and the accuracy of the heat treatment effect is also better. In the present invention, the movable seat 3 can move back and forth and can be freely adjusted according to the length of the pipe or wire 7; the chuck body 4 has the function of clamping the pipe and wire 7. At the same time, because the electrode plate 5 on the chuck body 4 is connected to the pulse power supply, when clamping the wire 7, one group of negative pressure plates on the chuck body 4 is connected to the negative electrode of the pulse power supply; the positive pressure plates on the other group of chuck bodies 4 are connected to the positive electrode of the pulse power supply, so as to achieve the purpose of electrically heating the wire 7. When clamping the pipe, the chuck body 4 has the function of clamping the pipe and also serves as a It is used as the negative electrode, and the positive electrode that is energized is in the form of a welding wheel assembly. By controlling the motor 27, the copper welding wheel 17 (roller) can be rolled forward or backward in a straight line to reduce friction; to ensure that the copper roller of the positive electrode is always in contact with the inner wall 10 of the pipe during the heating process, a spring 21 is installed on the upper end of the roller to push the wheel. With the help of the force of the spring 21, the copper roller can always be in contact with the inner wall 10 of the pipe; cooling water is passed through the inside of the chuck and welding wheel assembly to ensure that the heat generated by the chuck and welding wheel assembly when powered on for heating is taken away, effectively protecting the chuck and welding wheel assembly.

[0021] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A wire heat treatment test system, characterized in that: It includes a fixed seat fixed on the table and a movable seat slidably installed on the table and capable of moving toward or away from the fixed seat. A group of chuck bodies are respectively installed on the fixed seat and the movable seat. The two groups of chuck bodies are arranged opposite to each other, and a group of electrode plates are fixed on each jaw of the chuck body. A group of copper pressure blocks are connected to each group of electrode plates. Multiple groups of copper pressure blocks are arranged around the center of the chuck body for circumferentially clamping or loosening the wire with the movement of the jaws. The electrode plates on one group of chuck bodies are connected to the positive pole of the pulse power supply to form a positive pressure plate, and the electrode plates on the other group of chuck bodies are connected to the negative pole of the pulse power supply to form a negative pressure plate. A cooling pipe is opened in the electrode plate, and the inlet and outlet of the cooling pipe are connected to the external chiller circulation through a water cooling joint.

2. A wire heat treatment test system according to claim 1, characterized in that: A slide rail is provided on the table, and the movable seat is slidably mounted on the slide rail through a slider, and a locking screw is also screwed on the movable seat. When the movable seat moves to a suitable position, the locking screw is tightened so that the locking screw abuts and presses against the table, thereby fixing the movable tailstock.

3. A pipe inner wall heat treatment test system, based on a wire heat treatment test system according to claim 1 or 2, characterized in that: It also includes a welding wheel assembly that abuts the inner wall of the pipe. The positive pole of the pulse power supply connected to the electrode plate is replaced by a connection to the welding wheel assembly, and a copper expansion block is provided on the side of each set of electrode plates facing away from the copper pressure block. Multiple groups of copper expansion blocks are arranged around the center of the chuck body and are used to move with the claws to circumferentially clamp or loosen the inner wall of the pipe.

4. A pipe inner wall heat treatment test system according to claim 3, characterized in that: The welding wheel assembly includes an electrode rod that passes through the center of the chuck body to fix the copper welding wheel. The electrode rod is hollow and has a return pipe at its center. One end of the electrode rod is connected to the water inlet joint, and the other end of the electrode rod is sealed. After water enters the water inlet joint, the water flows to the other end of the electrode rod and enters the return pipe from the open end of the return pipe. In the return pipe, the water flows from the open end of the return pipe to the sealed end of the return pipe, and then flows out from the return pipe that passes through the electrode rod.

5. A pipe inner wall heat treatment test system according to claim 4, characterized in that: The sealed end of the electrode rod is connected to a welding wheel seat through a clamp. The copper welding wheel is installed on the welding wheel seat and serves as a roller that rolls along the inner wall of the pipe. The clamp is tightly clamped on the welding wheel seat. One side of the clamp is also provided with a long strip guide groove extending along the Z direction. The bolts on the welding wheel seat are connected to the clamp after passing through the guide groove. A group of springs compressed along the Z direction are also provided in the welding wheel seat. A group of clamping wheels are pressed on the top of the springs through a guide sleeve. The axial direction of the clamping wheel and the copper welding wheel is the Y direction, and they are used to press against both sides of the inner wall of the pipe with an axial direction in the X direction under the pressure of the spring.

6. A pipe inner wall heat treatment test system according to claim 5, characterized in that: A group of adjusting screws are screwed onto the welding wheel seat, and the ends of the adjusting screws are pressed against the ends of the springs.

7. A pipe inner wall heat treatment test system according to claim 6, characterized in that: The electrode rod is screwed onto a set of screw rods through a bracket. The screw rods are mounted on a table and driven to rotate by a motor. At this point, the electrode rods can be driven by the screw rods to drive the copper welding wheel to move along the X direction. A set of positive electrode connection blocks are also provided outside the electrode rods. The positive electrode connection blocks are connected to the positive pole of the pulse power supply.

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