A deep cryogenic thermal cycle processing apparatus for remanufacturing a workpiece

Abstract

The utility model describes a kind of cryogenic thermal cycle processing device for remanufacturing workpiece, and the vertical lifting of hydraulic column in workpiece transfer module, radial telescopic and circumferential rotation of multistage telescopic rod, folding rotation of clamping buckle, friction tension of flexible belt, jacking extrusion of the top elastic pressure head of micro air cylinder piston rod, the locking cooperation of locking block realize the grabbing transfer of multiple remanufacturing workpieces, improve transfer efficiency and equipment utilization.Workpiece transfer module is placed workpiece to be handled by component table, and workpiece is placed by component table after being handled, so that it is convenient for operator to store test piece and take out test sample, save operation time, improve processing efficiency.Each module can be detachably connected, which is convenient for later maintenance and replacement, prolongs the service life of equipment, improves economic benefits.By replacing and installing suitable clamping base at the top of multistage telescopic rod according to the size of remanufacturing workpiece, the applicability of the equipment is improved, and the processing cost is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of cryogenic heat treatment equipment, specifically a cryogenic heat cycle treatment device for remanufacturing workpieces. Background Technology

[0002] Remanufacturing is the process of repairing or reprocessing old parts to restore or improve their performance. Laser cladding technology, as an advanced surface modification technology, has significant application value in engineering. In recent years, breakthroughs have been made in domestic high-power laser technology, and laser cladding processes and powder preparation technologies have been continuously optimized. Domestic research institutions and remanufacturing companies are gradually exploring the use of laser cladding technology to enhance the wear resistance of key components. This technology uses a laser as a heat source to melt the filler material and the substrate surface together, forming a cladding layer that is metallurgically bonded to the substrate. This can significantly improve the wear resistance, corrosion resistance, and high-temperature resistance of the substrate surface, and has advantages such as high energy density, fast heating speed, minimal thermal impact on the substrate, and high bonding strength with the substrate. It is applicable to multiple industries such as aerospace, energy, and transportation.

[0003] However, laser cladding technology has its shortcomings. The rapid heating and cooling during the cladding process can easily create large temperature gradients, generating high residual stress. This leads to cracking of the cladding layer and uneven microstructure, posing a risk of cladding layer detachment and fracture during the service life of remanufactured workpieces. Therefore, deep cryogenic heat treatment is necessary to further regulate and modify the workpieces before and after laser cladding. This aims to reduce internal residual stress, adjust phase ratios, improve structural and dimensional stability, reduce crack formation, optimize the microstructure of the cladding layer, refine grain size, enhance metallurgical bonding strength, reduce the risk of spalling, ensure service performance, and strengthen mechanical properties.

[0004] In the prior art, the cryogenic heat treatment device disclosed in patent publication number CN 113621901 B uses a unidirectional channel to transfer and cryogenically heat treat the workpiece, but it cannot achieve cryogenic heat cycle treatment or complete the coordinated operation of various modules. The laser cladding manufacturing device disclosed in patent publication number CN 116121746 B, which can be modified by rolling and cryogenic heat treatment, can meet multiple modification functions through multiple process combinations, solving the problems of dispersed layout, cumbersome structure and single function of laser cladding modification equipment. However, when cryogenically heat treating ring-shaped workpieces, the cryogenic heat treatment module is prone to interference with the manufacturing module, causing equipment damage. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a cryogenic thermal cycling treatment device for remanufactured workpieces. This device can grasp and transfer multiple sets of remanufactured workpieces through a workpiece transfer module, and simultaneously link a heat treatment module, a quenching module, and a cryogenic treatment module. It can simultaneously realize the synchronous and rapid transfer and cryogenic thermal cycling modification and control treatment of multiple remanufactured workpieces, improve processing efficiency, equipment utilization rate, and operational stability, enhance economic benefits, and solve the problems in existing technologies.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a cryogenic thermal cycling treatment device for remanufacturing workpieces, including an outer frame base module, within which a heat treatment module, a quenching module, a cryogenic treatment module, and a workpiece transfer module are installed. The workpiece transfer module can transfer the workpiece between the heat treatment module, the quenching module, and the cryogenic treatment module. The outer frame base module includes a base and a top cover plate arranged side-by-side, with several vertically arranged support columns installed between the base and the top cover plate. A placement platform and a removal platform are respectively installed on the inner side of the support columns. A host computer is installed on the top cover plate. The heat treatment module, the quenching module, and the cryogenic treatment module are all connected to the host computer via control lines. The workpiece transfer module includes several multi-stage telescopic rods capable of vertical lifting and rotation. Each multi-stage telescopic rod has a detachable clamping base at its end. The clamping base can reciprocate between the heat treatment module, quenching module, cryogenic treatment module, placement platform, and removal platform. A rotatable clamping buckle is hinged to one side of the clamping base, and a locking block secures the clamping buckle on the other side. A flexible band is installed inside the clamping buckle. Several miniature cylinders are installed inside the clamping base, and a miniature cylinder piston rod is fitted inside the cylinder barrel of each miniature cylinder. An elastic pressure head is provided at the end of the piston rod extending from the cylinder barrel. When the clamping buckle is fixed to the clamping base, the elastic pressure head and flexible band can position and clamp the workpiece. A connecting rod is also provided at the bottom of the upper cover plate. The heat treatment module, quenching module, and cryogenic treatment module are all mounted on the upper cover plate via the connecting rod. A rotatable handle is installed on the upper cover plate. The base has articulated legs installed at its bottom, and the bottom of the base has an embedded groove that mates with the articulated legs. Universal wheels are mounted on the bottom of the articulated legs via buffer springs. The workpiece transfer module also includes a servo motor and a reversing seat mounted on the base. A planetary gear reducer is mounted on the shaft of the servo motor, and the drive shaft of the planetary gear reducer is connected to the input shaft of the reversing seat via a flexible coupling. A hydraulic column is mounted on the output shaft of the reversing seat. The piston rod of the hydraulic column has a spline, and the multi-stage telescopic rod has a spline groove that mates with the spline. A locking nut is also installed at the end of the piston rod of the hydraulic column, pressing the multi-stage telescopic rod against the hydraulic column. When the servo motor starts, it drives the multi-stage telescopic rod to rotate, and the hydraulic column drives the multi-stage telescopic rod to move vertically. The heat treatment module includes a first cavity, in which a first telescopic frame capable of vertical lifting is installed. The bottom of the first telescopic frame is provided with a first cavity bottom plate. When the first telescopic frame moves upward, it can drive the first cavity bottom plate to seal the bottom of the first cavity. A first air pressure sensor is installed on the top of the first cavity. An air inlet and an air outlet are provided on the outer wall of the first cavity. An air inlet pipe is installed on the air inlet, and an air outlet pipe is installed on the air outlet. A vortex tube, a first electric heater, and a first thermocouple are also installed on the first cavity.The quenching module includes a second cavity, within which a vertically movable second telescopic frame is installed. The bottom of the second telescopic frame has a base plate for the second cavity. When the second telescopic frame moves upward, it can cause the base plate to seal the bottom of the second cavity. A radar level gauge and a second pressure sensor are installed at the top of the second cavity. A second electric heater, a quenching liquid overflow hole, and a second thermocouple are located on the outer wall of the second cavity. A quenching liquid inlet pipe and a quenching liquid outlet pipe, connected to the interior, are also installed on the second cavity. The cryogenic treatment module includes a third cavity, within which a vertically movable third telescopic frame is installed. The bottom of the third telescopic frame has a base plate for the third cavity. When the third telescopic frame moves upward, it can cause the base plate to seal the bottom of the third cavity. An ultra-low temperature radar level gauge and a third pressure sensor are installed at the top of the third cavity. A liquid nitrogen overflow hole and an ultra-low temperature probe are located on the outer wall of the third cavity. A liquid nitrogen inlet pipe and a liquid nitrogen outlet pipe, connected to the interior, are also installed on the third cavity.

[0007] The positive effects of this utility model are as follows: The cryogenic thermal cycling treatment device for remanufactured workpieces described in this utility model achieves the gripping and transfer of multiple sets of remanufactured workpieces through the vertical lifting and lowering of the hydraulic column in the workpiece transfer module, the radial extension and circumferential rotation of the multi-stage telescopic rod, the folding and rotation of the clamping buckle, the frictional tension of the flexible belt, the lifting and squeezing of the elastic pressure head at the top of the micro cylinder piston rod, and the locking cooperation of the locking block, thereby improving transfer efficiency and equipment utilization. The rotation, lifting, gripping, and releasing of the workpiece transfer module can be linked with the efficient operation of the heat treatment module, quenching module, and cryogenic treatment module via a host computer. It can simultaneously achieve synchronous and rapid transfer and cryogenic thermal cycling modification and control treatment of multiple remanufactured workpieces. The equipment has a high degree of intelligence, is easy to operate, has high processing efficiency, reduces production costs, and improves economic benefits. In the heat treatment module, quenching module, and cryogenic treatment module, real-time feedback detection by multiple sensors allows for real-time adjustment and modification of specific process parameters in the host computer based on the sensor feedback data, ensuring the synergistic modification effect of cryogenic thermal cycling treatment. The equipment operates stably and reliably. The host computer allows for the selection of various processing modes (such as preheating before remanufacturing, cryogenic thermal cycling after remanufacturing, heat treatment, and cryogenic treatment) and process parameters (such as holding time, cycle time, heating and cooling rates, temperature settings, and processing quantity). This ensures better performance in improving workpiece forming properties, surface quality, and mechanical properties, resulting in diverse processing effects and a wide range of applications. The workpiece transfer module uses a placement platform to grab the workpiece to be processed and a retrieval platform to place the processed workpiece, facilitating centralized storage and retrieval of samples by operators, saving operation time and improving processing efficiency. The modules are detachably connected, facilitating later maintenance and replacement, extending equipment service life, and improving economic efficiency. By replacing and installing suitable clamping bases at the top of the multi-stage telescopic rods according to the size of the remanufactured workpieces, the applicability of the equipment is improved, and processing costs are reduced. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of the outer frame base module; Figure 3 This is a bottom view of the outer frame base module; Figure 4 This is a structural diagram of the workpiece transfer module; Figure 5 yes Figure 4 A magnified view of part of I; Figure 6 This is a schematic diagram of the heat treatment module; Figure 7 This is a schematic diagram of the quenching module; Figure 8 This is a structural diagram of the cryogenic processing module; Figure 9 This is a partial sectional view of the present invention; Figure 10 This is a schematic diagram showing the state of the workpiece being clamped by the clamping base on the workpiece transfer module.

[0009] 1 Outer frame base module, 101 Handle, 102 Top cover plate, 103 Placement platform, 104 Retrieval platform, 105 Support column, 106 Host computer, 107 Connecting rod, 108 Base, 109 Hinge leg, 110 Buffer spring, 111 Caster wheel; 2. Workpiece transfer module, 201. Servo motor, 202. Planetary gear reducer, 203. Drive shaft, 204. Flexible coupling, 205. Input shaft, 206. Reversing seat, 207. Output shaft, 208. Hydraulic column, 209. Spline, 210. Locking nut, 211. Multi-stage telescopic rod, 212. Clamping base, 213. Locking block, 214. Miniature cylinder, 215. Miniature cylinder piston rod, 216. Flexible belt, 217. Clamping buckle, 218. Flexible pressure head, 219. Workpiece; 3 heat treatment module, 301 first air pressure sensor, 302 air inlet, 303 air inlet pipe, 304 first cavity, 305 vortex tube, 306 first electric heater, 307 air outlet, 308 air outlet pipe, 309 first telescopic frame, 310 first cavity base plate, 311 first thermocouple; 4 Quenching module, 401 Radar level gauge, 402 Second cavity, 403 Second electric heater, 404 Second telescopic frame, 405 Second cavity base plate, 406 Second air pressure sensor, 407 Quenching liquid overflow hole, 408 Second thermocouple, 409 Quenching liquid input pipe, 410 Quenching liquid output pipe; 5. Cryogenic treatment module, 501. Ultra-low temperature radar level gauge, 502. Third chamber, 503. Ultra-low temperature probe, 504. Third telescopic frame, 505. Third chamber base plate, 506. Third pressure sensor, 507. Liquid nitrogen overflow hole, 508. Liquid nitrogen input pipe, 509. Liquid nitrogen output pipe. Detailed Implementation

[0010] The present invention describes a cryogenic thermal cycling treatment device for remanufacturing workpieces, such as... Figure 1-5 As shown, it includes an outer frame base module 1, in which a heat treatment module 3, a quenching treatment module 4, a cryogenic treatment module 5, and a workpiece transfer module 2 are installed. The workpiece transfer module 2 can transfer workpieces between the heat treatment module 3, the quenching treatment module 4, and the cryogenic treatment module 5, and can simultaneously realize the synchronous and rapid transfer of multiple remanufactured workpieces and cryogenic thermal cycle modification and control treatment, thereby improving processing efficiency and equipment utilization.

[0011] The outer frame base module 1 includes a base 108 and an upper cover plate 102 arranged side by side. Several vertically arranged support columns 105 are installed between the base 108 and the upper cover plate 102. A placement platform 103 and a retrieval platform 104 are respectively installed on the inner side of the support columns 105. The multiple sets of support columns 105 are vertically and circumferentially arranged between the upper cover plate 102 and the base 108. The placement platform 103 and the retrieval platform 104 are horizontally installed on the support columns 105. The placement platform 103 is used to place the workpiece to be processed, so that the workpiece transfer module 2 can pick up the workpiece for cold and heat treatment. The retrieval platform 104 is used to collect the workpiece after cold and heat treatment, so that the workpiece transfer module 2 can place the workpiece after cold and heat treatment. At the same time, the workpiece transfer module 2 is fixedly installed on the base 108 to realize the transfer processing of the workpiece.

[0012] A host computer 106 is installed on the upper cover plate 102. The heat treatment module 3, quenching module 4, and cryogenic treatment module 5 are all connected to the host computer 106 through control lines. The coordinated operation of the workpiece transfer module 2, heat treatment module 3, quenching module 4, and cryogenic treatment module 5 is realized through the control commands of the host computer 106.

[0013] The workpiece transfer module 2 includes several multi-stage telescopic rods 211 capable of vertical lifting and rotation. The vertical lifting of the multi-stage telescopic rods 211 can be achieved by existing lifting motors or electric push rods, while the rotation can be achieved by existing rotary motors or slewing bearings. Each end of the multi-stage telescopic rods 211 is equipped with a detachable clamping base 212, which can reciprocate between the heat treatment module 3, the quenching treatment module 4, the cryogenic treatment module 5, the placement platform 103, and the unloading platform 104.

[0014] A rotatable clamping buckle 217 is hinged to one side of the clamping base 212, and a locking block 213 is provided on the other side of the clamping base 212 to fix the clamping buckle 217. A flexible band 216 is installed inside the clamping buckle 217. Several miniature cylinders 214 are installed inside the clamping base 212. A miniature cylinder piston rod 215 is installed in the cylinder of each miniature cylinder 214. An elastic pressure head 218 is provided at the end of the miniature cylinder piston rod 215 that extends out of the cylinder. When the clamping buckle 217 is fixed on the clamping base 212, the elastic pressure head 218 and the flexible band 216 can position and clamp the workpiece.

[0015] The multi-stage telescopic rod 211 is detachably connected to the clamping base 212, which facilitates the gripping and transfer of workpieces 219 of different sizes. The micro cylinder 214 is vertically installed on the upper surface of the clamping base 212 and is connected to the micro cylinder piston rod 215. The top end of the micro cylinder piston rod 215 is provided with an elastic pressure head 218. The locking block 213 is located on the top of one side of the clamping base 212. The clamping buckle 217 is hinged to the clamping base 212. The two ends of the flexible belt 216 are respectively installed on the two ends of the clamping buckle 217 and kept taut. The workpiece 219 is fixed during the gripping and transfer process through the folding and rotation of the clamping buckle 217, the frictional tension of the flexible belt 216, the lifting and squeezing of the elastic pressure head 218, and the locking cooperation of the locking block 213.

[0016] Furthermore, the bottom of the upper cover plate 102 may also be provided with a connecting rod 107. The heat treatment module 3, the quenching treatment module 4 and the cryogenic treatment module 5 are all installed on the upper cover plate 102 through the connecting rod 107. A rotatable handle 101 is installed on the upper cover plate 102. The handle 101 facilitates the transfer and carrying of the device. At the same time, the handle 101 can be rotated and folded into the groove on the upper part of the upper cover plate 102 to reduce the overall size of the device.

[0017] Furthermore, to facilitate the transfer of the entire device, a hinged leg 109 can be installed at the bottom of the base 108. The bottom of the base 108 has an embedded groove that mates with the hinged leg 109. A caster wheel 111 is installed at the bottom of the hinged leg 109 via a buffer spring 110, which facilitates the transfer of the device. The hinged leg 109 can be rotated and folded so that the hinged leg 109, the buffer spring 110, and the caster wheel 111 can be inserted into the groove at the bottom of the base 108, thereby reducing the volume of the entire device in the non-moving state.

[0018] Furthermore, in order to drive the lifting and rotation of the multi-stage telescopic rod 211, the workpiece transfer module 2 also includes a servo motor 201 and a reversing seat 206 mounted on the base 108. A planetary gear reducer 202 is mounted on the rotating shaft of the servo motor 201. The transmission shaft 203 of the planetary gear reducer 202 is connected to the input shaft 205 of the reversing seat 206 through an elastic coupling 204. A hydraulic column 208 is mounted on the output shaft 207 of the reversing seat 206. A spline 209 is provided on the piston rod of the hydraulic column 208. A spline groove that mates with the spline 209 is provided on the multi-stage telescopic rod 211. A locking nut 210 is also installed at the end of the piston rod of the hydraulic column 208. The locking nut 210 presses the multi-stage telescopic rod 211 against the hydraulic column 208. When the servo motor 201 is started, it can drive the multi-stage telescopic rod 211 to rotate. The hydraulic column 208 can drive the multi-stage telescopic rod 211 to lift vertically.

[0019] The servo motor 201 is connected to the planetary gear reducer 202 via a rotating shaft. The transmission shaft 203 outputs power to the input shaft 205 via a flexible coupling 204. The input shaft 205 and the output shaft 207 are connected via a reversing seat 206. The output shaft 207 is connected to the hydraulic column 208, thereby realizing the rotation of the hydraulic column 208. The multi-stage telescopic rod 211 is fixedly mounted on the hydraulic column 208 by the pre-tightening of the locking nut 210. At the same time, the spline 209 enables the circumferential rotation of the multi-stage telescopic rod 211. In addition, the extension and retraction of the hydraulic column 208 enables the vertical lifting and lowering of the multi-stage telescopic rod 211. The reversing seat 206 can reverse the rotational power, thereby driving the horizontal rotation of the multi-stage telescopic rod 211. By reversing the rotational power, the overall height of the device can be effectively reduced.

[0020] Furthermore, such as Figure 6 As shown, the heat treatment module 3 includes a first cavity 304. A first telescopic frame 309 capable of vertical lifting is installed inside the first cavity 304. A first cavity bottom plate 310 is provided at the bottom of the first telescopic frame 309. When the first telescopic frame 309 moves upward, it can drive the first cavity bottom plate 310 to seal the bottom of the first cavity 304. A first air pressure sensor 301 is installed on the top of the first cavity 304. An air inlet 302 and an air outlet 307 are provided on the outer wall of the first cavity 304. An air inlet pipe 303 is installed on the air inlet 302, and an air outlet pipe 308 is installed on the air outlet 307. A vortex tube 305, a first electric heater 306, and a first thermocouple 311 are also installed on the first cavity 304.

[0021] The first cavity 304 has a thin-walled shell structure inside, used to store the heat treatment experimental medium. The air inlet 302, air inlet pipe 303, air outlet 307, and air outlet pipe 308 are arranged above the outer wall of the first cavity 304 to control the input and output of the heat treatment experimental medium. The first pressure sensor 301 is installed on the upper surface of the first cavity 304 to realize real-time measurement and feedback of the pressure inside the cavity. The first thermocouple 311 is set below the outer wall of the first cavity 304 for real-time monitoring and feedback of the temperature of the heat treatment experimental medium inside the cavity. The eddy current tube 305 is set on the outer wall of the first cavity 304 to realize the reduction and maintenance of the temperature of the heat treatment experimental medium inside the cavity. The first electric heater 306 is installed below the outer wall of the first cavity 304 to realize the increase and maintenance of the temperature of the heat treatment experimental medium inside the cavity.

[0022] The first air pressure sensor 301, air inlet 302, air inlet pipe 303, vortex tube 305, first electric heater 306, air outlet 307, air outlet pipe 308, and first thermocouple 311 are connected to the host computer 106. The measured pressure and temperature data of the first air pressure sensor 301 and the first thermocouple 311 are fed back to the host computer 106 in real time. At the same time, the host computer 106 can control the air inlet 302, air inlet pipe 303, vortex tube 305, first electric heater 306, air outlet 307, and air outlet pipe 308 in real time through the control signals, thereby realizing heat treatment under set temperature, pressure, and other conditions. The first telescopic frame 309 is vertically installed on the inner side below the outer wall of the first cavity 304. The bottom plate 310 of the first cavity is connected to the first telescopic frame 309. The vertical movement of the first telescopic frame 309 drives the vertical lifting and lowering of the bottom plate 310 of the first cavity. The first telescopic frame 309 and the bottom plate 310 of the first cavity are connected to the host computer 106. The lifting and fixing of the first telescopic frame 309 and the bottom plate 310 of the first cavity are realized through the control signal of the host computer 106. At the same time, the movement of the workpiece transfer module 2 is coordinated to realize the transfer and heat treatment of the workpiece 219.

[0023] Furthermore, such as Figure 7 As shown, the quenching module 4 includes a second cavity 402. A second telescopic frame 404, capable of vertical lifting, is installed inside the second cavity 402. A second cavity base plate 405 is located at the bottom of the second telescopic frame 404. When the second telescopic frame 404 moves upward, it can drive the second cavity base plate 405 to seal the bottom of the second cavity 402. A radar level gauge 401 and a second pressure sensor 406 are installed on the top of the second cavity 402. A second electric heater 403, a quenching liquid overflow hole 407, and a second thermocouple 408 are provided on the outer wall of the second cavity 402. A quenching liquid inlet pipe 409 and a quenching liquid outlet pipe 410, which communicate with the interior, are also installed on the second cavity 402.

[0024] The second cavity 402 has a thin-walled shell structure for storing quenching fluid. The quenching fluid inlet pipe 409 and the quenching fluid outlet pipe 410 are arranged below the outer wall of the second cavity 402 to control the inflow and outflow of the quenching fluid. The quenching fluid overflow hole 407 is installed above the outer wall of the second cavity 402 to realize the overflow of the quenching fluid. The radar level gauge 401 and the second pressure sensor 406 are installed on the upper surface of the second cavity 402 to realize the real-time measurement and feedback of the liquid level and pressure in the cavity. The second thermocouple 408 is set below the outer wall of the second cavity 402 for real-time monitoring and feedback of the quenching fluid temperature. The second electric heater 403 is installed below the outer wall of the second cavity 402 to realize the raising and maintaining of the quenching fluid temperature.

[0025] The radar level gauge 401, the second electric heater 403, the second pressure sensor 406, the quenching liquid overflow hole 407, the second thermocouple 408, the quenching liquid input pipe 409, and the quenching liquid output pipe 410 are connected to the host computer 106. The measured liquid level height, pressure, and temperature data of the radar level gauge 401, the second pressure sensor 406, and the second thermocouple 408 are fed back to the host computer 106 in real time. At the same time, the second electric heater 403, the quenching liquid overflow hole 407, the quenching liquid input pipe 409, and the quenching liquid output pipe 410 can be controlled in real time through the control signals of the host computer 106, thereby realizing the quenching treatment under the set temperature, pressure, liquid level height, and other conditions. The second telescopic frame 404 is vertically installed on the inner side below the outer wall of the second cavity 402. The bottom plate 405 of the second cavity is connected to the second telescopic frame 404. The vertical movement of the second telescopic frame 404 drives the vertical lifting and lowering of the bottom plate 405 of the second cavity. The second telescopic frame 404 and the bottom plate 405 of the second cavity are connected to the host computer 106. The lifting and fixing of the second telescopic frame 404 and the bottom plate 405 of the second cavity are realized by the control signal issued by the host computer 106. At the same time, the movement of the workpiece transfer module 2 is coordinated to realize the transfer and quenching treatment of the workpiece 219.

[0026] Furthermore, such as Figure 8 As shown, the cryogenic treatment module 5 includes a third cavity 502. A vertically movable third telescopic frame 504 is installed inside the third cavity 502. A third cavity base plate 505 is located at the bottom of the third telescopic frame 504. When the third telescopic frame 504 moves upward, it can cause the third cavity base plate 505 to seal the bottom of the third cavity 502. An ultra-low temperature radar level gauge 501 and a third pressure sensor 506 are installed on the top of the third cavity 502. A liquid nitrogen overflow hole 507 and an ultra-low temperature probe 503 are located on the outer wall of the third cavity 502. A liquid nitrogen input pipe 508 and a liquid nitrogen output pipe 509, which communicate with the interior, are also installed on the third cavity 502.

[0027] The third chamber 502 has a thin-walled shell structure for storing cryogenic treatment experimental media. Liquid nitrogen inlet pipe 508 and liquid nitrogen outlet pipe 509 are arranged below the outer wall of the third chamber 502 to control the inflow and outflow of liquid nitrogen. Liquid nitrogen overflow hole 507 is installed above the outer wall of the third chamber 502 to realize the overflow of liquid nitrogen. Cryogenic radar level gauge 501 and third pressure sensor 506 are installed on the upper surface of the third chamber 502 to realize real-time measurement and feedback of liquid level and pressure in the chamber. Cryogenic temperature probe 503 is set below the outer wall of the third chamber 502 for real-time measurement and feedback of liquid nitrogen temperature.

[0028] The cryogenic radar level gauge 501, cryogenic temperature probe 503, third pressure sensor 506, liquid nitrogen overflow hole 507, liquid nitrogen input pipe 508, and liquid nitrogen output pipe 509 are connected to the host computer 106. The measured liquid level height, temperature, and pressure data of the cryogenic radar level gauge 501, cryogenic temperature probe 503, and third pressure sensor 506 are fed back to the host computer 106 in real time. At the same time, the liquid nitrogen overflow hole 507, liquid nitrogen input pipe 508, and liquid nitrogen output pipe 509 can be controlled in real time through the control signals of the host computer 106, thereby realizing deep cryogenic treatment under the conditions of set pressure and liquid level height. The third telescopic frame 504 is vertically installed on the inner side below the outer wall of the third cavity 502. The bottom plate 505 of the third cavity is connected to the third telescopic frame 504. The vertical movement of the third telescopic frame 504 drives the vertical lifting and lowering of the bottom plate 505 of the third cavity. The third telescopic frame 504 and the bottom plate 505 of the third cavity are connected to the host computer 106. The lifting and fixing of the third telescopic frame 504 and the bottom plate 505 of the third cavity are realized through the control signal issued by the host computer 106. At the same time, the movement of the workpiece transfer module 2 is coordinated to realize the transfer and deep cryogenic treatment of the workpiece 219.

[0029] The steps for performing deep cryogenic thermal cycling treatment on the remanufactured workpiece 219 using this invention are as follows: First, the entire device is positioned appropriately using handle 101 and casters 111. Simultaneously, the remanufactured workpiece 219 to be processed is placed on the placement table 103. A suitable clamping base 212 is installed on the top of the multi-stage telescopic rod 211 according to the size of the remanufactured workpiece 219. Next, an external power supply is connected, and the specific parameters for cryogenic heat treatment are set via the host computer 106, such as mode selection, holding time, cycle time, heating and cooling rates, temperature setting, and processing quantity. Simultaneously, the host computer 106 outputs control signals to the servo motor 201 and hydraulic cylinder 208, thereby driving the multi-stage telescopic rod 211 to rotate and... The lifting and lowering mechanism, along with the frictional tensioning of the flexible straps 216 at both ends of the clamping buckle 217 hinged to the clamping base 212, the folding and rotation of the clamping buckle 217, the lifting and pressing of the elastic pressure head 218 at the top of the micro cylinder piston rod 215, and the locking engagement of the locking block 213, all contribute to the gripping and transfer of the remanufactured workpiece 219. Simultaneously, when the multi-stage telescopic rod 211 is about to reach the processing module, the host computer 106 outputs control signals to the first telescopic frame 309, the second telescopic frame 404, and the third telescopic frame 504, thereby driving the first cavity base plate 310, the second cavity base plate 405, and the third cavity base plate 504. After the vertical descent of workpiece 219, placed on the first cavity base plate 310, the second cavity base plate 405, and the third cavity base plate 505, the host computer 106 outputs a control signal to the servo motor 201, which in turn drives the multi-stage telescopic rod 211 to continue rotating and gradually move away from the processing module. At the same time, the host computer 106 outputs a control signal to the hydraulic column 208 to achieve lifting and resetting. After the workpiece transfer module 2 is reset, the host computer 106 outputs a control signal to the first telescopic frame 309, the second telescopic frame 404, and the third telescopic frame 504, which in turn drives the first cavity base plate 310, the second cavity base plate 405, and the third cavity base plate 505. The vertical rise of 505 achieves the closure and sealing of the interior of the first cavity 304, the second cavity 402, and the third cavity 502, preparing for deep cryogenic, hot, or quenching treatment of the workpiece 219. In conjunction with the rotation, lifting, gripping, and releasing of the workpiece transfer module 2, and the linkage of the heat treatment module 3, the quenching treatment module 4, and the deep cryogenic treatment module 5, the synchronous transfer and deep cryogenic heat cycle treatment of multiple remanufactured workpieces 219 are realized. Finally, the workpiece transfer module 2 transfers the processed remanufactured workpiece 219 and places it on the picking platform. After processing, each module is reset, the host computer is turned off, the power is disconnected, and the processed remanufactured workpiece 219 is taken out.

[0030] This utility model proposes a cryogenic thermal cycling treatment device for remanufactured workpieces. Through the vertical lifting and lowering of the hydraulic column in the workpiece transfer module, the radial extension and circumferential rotation of the multi-stage telescopic rod, the folding and rotation of the clamping buckle, the frictional tensioning of the flexible belt, the lifting and squeezing of the elastic pressure head at the top of the micro-cylinder piston rod, and the locking engagement of the locking block, multiple sets of remanufactured workpieces can be gripped and transferred simultaneously. Simultaneously, it links the heat treatment module, quenching module, and cryogenic treatment module, enabling the synchronous and rapid transfer and cryogenic thermal cycling modification and control treatment of multiple remanufactured workpieces, improving processing efficiency and equipment utilization. The top of the telescopic rod can be replaced with a suitable clamping base according to the size of the remanufactured workpiece, improving the applicability of the equipment; the handle and casters enable quick transfer of the device, making it simple, portable, and easy to transport; through the host computer, various processing modes (such as preheating treatment before remanufacturing, deep cryogenic cycle treatment after remanufacturing, heat treatment and deep cryogenic treatment, etc.) and process parameters (such as holding time, cycle period, heating and cooling rate, temperature setting and processing quantity, etc.) can be selected, providing a guarantee for better improvement of workpiece forming performance, surface quality and mechanical properties, with diverse processing effects and a wide range of applications.

[0031] The technical solution of this utility model is not limited to the scope of the embodiments described herein. All technical contents not described in detail herein are publicly known technologies.

Claims

1. A cryogenic thermal cycling treatment apparatus for remanufacturing workpieces, characterized in that: The system includes an outer frame base module (1), within which are installed a heat treatment module (3), a quenching module (4), a cryogenic treatment module (5), and a workpiece transfer module (2). The workpiece transfer module (2) can transfer the workpiece between the heat treatment module (3), the quenching module (4), and the cryogenic treatment module (5). The outer frame base module (1) includes a base (108) and a top cover plate (102) arranged side by side. Several vertically arranged support columns (105) are installed between the components. A placement platform (103) and a picking platform (104) are respectively installed on the inner side of the support columns (105). A host computer (106) is installed on the upper cover plate (102). The heat treatment module (3), quenching module (4), and cryogenic treatment module (5) are all connected to the host computer (106) via control lines. The workpiece transfer module (2) includes several multi-stage telescopic rods (211) capable of vertical lifting and rotation. Each end of the multi-stage telescopic rod (211) is equipped with a detachable clamping base (212). The clamping base (212) can reciprocate between the heat treatment module (3), the quenching treatment module (4), the cryogenic treatment module (5), the placement platform (103), and the removal platform (104). A rotatable clamping buckle (217) is hinged to one side of the clamping base (212), and a locking block (213) is provided on the other side of the clamping base (212) to fix the clamping buckle (217). A flexible belt (216) is installed inside the clamping buckle (217), and several miniature cylinders (214) are installed inside the clamping base (212). A miniature cylinder piston rod (215) is installed in the cylinder of each miniature cylinder (214). An elastic pressure head (218) is provided at the end of the miniature cylinder piston rod (215) that extends out of the cylinder. When the clamping buckle (217) is fixed on the clamping base (212), the elastic pressure head (218) and the flexible belt (216) can position and clamp the workpiece.

2. The cryogenic thermal cycling treatment apparatus for remanufacturing workpieces according to claim 1, characterized in that: The bottom of the upper cover plate (102) is also provided with a connecting rod (107). The heat treatment module (3), the quenching treatment module (4) and the cryogenic treatment module (5) are all installed on the upper cover plate (102) through the connecting rod (107). A rotatable handle (101) is installed on the upper cover plate (102).

3. The cryogenic thermal cycling treatment apparatus for remanufacturing workpieces according to claim 1, characterized in that: The base (108) is equipped with a hinged leg (109) at the bottom. The base (108) has an inner groove that matches the hinged leg (109) at the bottom. The hinged leg (109) is equipped with a caster wheel (111) at the bottom via a buffer spring (110).

4. The cryogenic thermal cycling treatment apparatus for remanufacturing workpieces according to claim 1, characterized in that: The workpiece transfer module (2) also includes a servo motor (201) and a reversing seat (206) mounted on a base (108). A planetary gear reducer (202) is mounted on the shaft of the servo motor (201). The drive shaft (203) of the planetary gear reducer (202) is connected to the input shaft (205) of the reversing seat (206) via a flexible coupling (204). A hydraulic column (208) is mounted on the output shaft (207) of the reversing seat (206). The piston rod of the hydraulic column (208) is provided with a spline (209), and the multi-stage telescopic rod (211) is provided with a spline groove that matches the spline (209). A locking nut (210) is also installed at the end of the piston rod of the hydraulic column (208). The locking nut (210) presses the multi-stage telescopic rod (211) onto the hydraulic column (208). When the servo motor (201) is started, it can drive the multi-stage telescopic rod (211) to rotate. The hydraulic column (208) can drive the multi-stage telescopic rod (211) to rise and fall vertically.

5. A cryogenic thermal cycling treatment apparatus for remanufacturing workpieces according to claim 1, characterized in that: The heat treatment module (3) includes a first cavity (304), in which a first telescopic frame (309) capable of vertical lifting is installed. The bottom of the first telescopic frame (309) is provided with a first cavity bottom plate (310). When the first telescopic frame (309) moves upward, it can drive the first cavity bottom plate (310) to seal the bottom of the first cavity (304). A first air pressure sensor (301) is installed on the top of the first cavity (304). An air inlet (302) and an air outlet (307) are provided on the outer wall of the first cavity (304). An air inlet pipe (303) is installed on the air inlet (302), and an air outlet pipe (308) is installed on the air outlet (307). A vortex tube (305), a first electric heater (306), and a first thermocouple (311) are also installed on the first cavity (304).

6. The cryogenic thermal cycling treatment apparatus for remanufacturing workpieces according to claim 1, characterized in that: The quenching module (4) includes a second cavity (402), in which a second telescopic frame (404) capable of vertical lifting is installed. The bottom of the second telescopic frame (404) is provided with a second cavity bottom plate (405). When the second telescopic frame (404) moves upward, it can drive the second cavity bottom plate (405) to seal the bottom of the second cavity (402). The top of the second cavity (402) is equipped with a radar level gauge (401) and a second air pressure sensor (406). The outer wall of the second cavity (402) is provided with a second electric heater (403), a quenching liquid overflow hole (407) and a second thermocouple (408). The second cavity (402) is also equipped with a quenching liquid input pipe (409) and a quenching liquid output pipe (410) that are connected to the interior.

7. The cryogenic thermal cycling treatment apparatus for remanufacturing workpieces according to claim 1, characterized in that: The cryogenic treatment module (5) includes a third cavity (502), in which a third telescopic frame (504) capable of vertical lifting is installed. The bottom of the third telescopic frame (504) is provided with a third cavity bottom plate (505). When the third telescopic frame (504) moves upward, it can drive the third cavity bottom plate (505) to seal the bottom of the third cavity (502). The top of the third cavity (502) is equipped with an ultra-low temperature radar level gauge (501) and a third pressure sensor (506). The outer wall of the third cavity (502) is provided with a liquid nitrogen overflow hole (507) and an ultra-low temperature probe (503). The third cavity (502) is also equipped with a liquid nitrogen input pipe (508) and a liquid nitrogen output pipe (509) that are connected to the interior.

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