Workpiece residual stress heat treatment equipment

Abstract

The invention provides workpiece residual stress heat treatment equipment, relates to the technical field of heat treatment, and aims to solve the technical problem of poor distribution consistency of workpiece residual stress. The equipment comprises a rack, a controlled cooling device, a temperature measuring device and a controller, wherein the controlled cooling device comprises an air supply device and a plurality of air injection units communicated with the air supply device; each air injection unit is movably arranged on the rack through a moving module; the air injection unit comprises a conical hose and an injection pipe which are connected; the spray pipe comprises a pipe body, a telescopic device and two opposite lug plates, the pipe body is formed by winding a wall plate, the two ends of the wall plate are provided with overlapping parts, and the two lug plates are arranged on the outer wall faces, close to the two ends, of the wall plate correspondingly. The telescopic device comprises a first lead screw nut, a first lead screw and a first motor in transmission connection with the first lead screw, the first motor is arranged on one lug plate, and the first lead screw nut is arranged on the first lead screw and abuts against the side face, away from the first motor, of the other lug plate. The equipment can improve the distribution consistency of residual stress.

Description

Technical Field

[0001] The present invention relates to the technical field of heat treatment, and in particular to equipment for heat treatment of residual stress of a workpiece. Background Art

[0002] The life of the disc forgings of aircraft engines and gas turbines determines the life of the entire engine. During the forging production process, the disc forgings will produce uneven residual stress during heat treatment, especially during the cooling process, due to their non-uniform cross-sectional structure, which will greatly reduce the fatigue life of the disc forgings.

[0003] In related technologies, the heat treatment cooling process will select different cooling methods according to the cooling rate, such as furnace cooling, air cooling, oil cooling, water cooling, etc. However, these cooling methods all control the cooling of the disc forging as a whole, which makes it difficult to improve the uniformity of the microstructure and performance of the disc forging, and cannot bring out the performance potential of the metal material. Summary of the Invention

[0004] The object of the present invention is to provide a workpiece residual stress heat treatment device to solve the technical problem of poor consistency of residual stress distribution during workpiece heat treatment.

[0005] In order to achieve the above object, the present invention provides the following technical solutions: The present invention provides a workpiece residual stress heat treatment device, comprising a frame, a cooling control device, a temperature measuring device and a controller, wherein the cooling control device comprises an air supply device and a plurality of air injection units connected to the air supply device; each of the air injection units is movably arranged on the frame through a movable module; The jet unit includes a connected tapered hose and a nozzle, wherein the cross section of the tapered hose increases in a direction approaching the nozzle, and the nozzle faces the workpiece; The nozzle includes a tube body, a telescopic device, and two opposite ear plates. The tube body is formed by winding a wall plate, and the two ends of the wall plate have overlapping parts. The two ear plates are respectively arranged on the outer wall surface of the wall plate near the two ends. The telescopic device includes a first screw nut, a first screw, and a first motor connected to the first screw, wherein the first motor is arranged on one of the lugs, and the first screw nut is arranged on the first screw and abuts against a side of the other lug facing away from the first motor. The temperature measuring device is used to obtain temperature information of the workpiece. The temperature measuring device, the moving module and the first motor are all communicatively connected to the controller.

[0006] According to at least one embodiment of the present invention, the jet unit further includes an elastic collar, and the conical hose is sleeved on the outer wall surface of the tube body through the elastic collar.

[0007] According to at least one embodiment of the present invention, the nozzle further comprises a plurality of guide rods, one end of each guide rod being fixed on one of the lug plates, and the other end of each guide rod passing through a guide hole on another of the lug plates.

[0008] According to at least one embodiment of the present invention, the moving module includes a plurality of first wire rails extending along a first direction and a plurality of first moving members movably arranged on the first wire rails; Each of the jetting units is provided on a corresponding first moving member, and the first moving member is in communication with the controller.

[0009] According to at least one embodiment of the present invention, the moving module further includes two second wire rails extending along a second direction and a plurality of second moving members movably provided on each of the second wire rails; wherein the second direction is perpendicular to the first direction; Two ends of each of the first wire rails are respectively arranged on the corresponding second moving parts on the two second wire rails, and the second moving parts are communicatively connected with the controller.

[0010] According to at least one embodiment of the present invention, the cooling control device further includes a plurality of connected flow valves and bellows, and each of the air injection units is connected to the air supply device through the corresponding flow valve and the bellows.

[0011] According to at least one embodiment of the present invention, there are two cooling control devices, and the two cooling control devices are respectively provided on both sides of the workpiece.

[0012] According to at least one embodiment of the present invention, the heat treatment equipment further comprises a lifting device disposed in the middle portion of the frame, and the lifting device is used to place the workpiece in the middle position between the two cooling control devices.

[0013] According to at least one embodiment of the present invention, the heat treatment equipment further comprises a transfer device, a heating furnace, and a track provided between the heating furnace and the frame, wherein the heating furnace is used to heat the workpiece; The transfer device is movably arranged on the track, and is used to transfer the workpiece in the heating furnace to a corresponding position of the cooling control device.

[0014] According to at least one embodiment of the present invention, the transfer device includes a base plate, a track plate, a lifting mechanism, and a platform for carrying the workpiece, wherein the lifting mechanism is disposed between the base plate and the track plate; The carrier is movably arranged on the track plate via track wheels, and the bottom plate is arranged on the track via rollers.

[0015] One or more technical solutions provided in the exemplary embodiments of the present invention can achieve at least one of the following beneficial effects.

[0016] The workpiece residual stress heat treatment equipment of an exemplary embodiment of the present invention includes a frame, a cooling control device, a temperature measuring device and a controller. The cooling control device includes an air supply device and a plurality of jet units connected to the air supply device. The jet unit can move its own position through a mobile module. When the temperature measuring device detects the temperature distribution information of the workpiece, the controller controls the mobile module to move the jet unit to the corresponding part to be cooled of the workpiece according to the temperature information, and then realizes zoned cooling according to the different temperatures of different parts of the workpiece, thereby effectively regulating the residual stress of the workpiece and improving the consistency of the residual stress distribution of the workpiece.

[0017] Furthermore, the air injection unit includes a connected conical hose and a nozzle. The nozzle is located at the large end of the conical hose, that is, in the direction away from the air supply device. The conical hose has a trumpet-shaped opening and is connected to a variable-diameter nozzle at the opening. This allows the gas nozzle to be expanded or contracted, controlling the size of each cooling zone and more precisely controlling the residual stress at various locations on the workpiece. Specifically, the tube body is formed by winding a wall panel with overlapping portions at both ends of the wall panel. The diameter of the tube body is variable by adjusting the spacing between two lugs arranged on the outer surface of the wall panel, thereby increasing or decreasing the overlapping portion. The two lugs are connected by a telescopic mechanism, specifically a first screw and a first nut that cooperates with the screw. A first motor rotates the first screw, thereby changing the position of the first nut on the first screw, and thus changing the spacing between the two lugs. The first motor is in communication with a controller, which controls the required tube diameter based on the size and temperature of the actual workpiece area to be cooled. The telescopic mechanism uses a screw and screw nut motion mechanism to achieve higher control accuracy. Based on this, through the coordination between the mobile module and the variable diameter nozzle, the residual stress in various parts of the workpiece can be finely cooled and controlled, thereby achieving consistency in the overall performance of the workpiece and improving the fatigue life of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification. Figure 1 is a schematic diagram of the main structure of a heat treatment device according to an embodiment of the present invention; Figure 2 is a schematic diagram of a partial structure of a cooling control device according to an embodiment of the present invention; Figure 3 is a schematic diagram of the axonometric structure of a mobile module according to an embodiment of the present invention; Figure 4is a schematic structural diagram of an air injection unit according to an embodiment of the present invention; Figure 5 is a schematic structural diagram of a nozzle according to an embodiment of the present invention; Figure 6 Schematic diagram of the structure of a transfer device according to an embodiment of the present invention.

[0019] Reference numerals: 10. Cooling control device; 11. Flow divider; 12. Flow valve; 13. Bellows; 14. Conical hose; 15. Nozzle; 151. Wall plate; 152. First motor; 153. Ear plate; 154. Guide rod; 155. First screw rod; 156. First nut; 161. First wire guide; 162. Second wire guide; 163. First moving member; 164. Second moving member; 20. Air supply device; 30. Transfer device; 31. Carrying platform; 32. Track plate; 331. First rod; 332. Second rod; 333. Third rod; 334. Fourth rod; 34. Second screw rod; 35. Second motor; 36. Pin; 37. Bottom plate; 40. Heating furnace; 50. Controller; 60. Workpiece. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] In related technologies, the cooling process of a workpiece undergoing heat treatment cannot be regulated according to the structure and temperature distribution of the workpiece. The residual stress distribution of the workpiece is poorly consistent, making it difficult to fully realize the performance potential of the metal material.

[0022] To address these issues, the exemplary embodiments of the present invention provide an air jet unit that, based on the workpiece's temperature distribution, controls its movement to the appropriate location. This, combined with changes in the nozzle diameter, allows for precise control of the cooling position and size, creating a closed-loop control loop. This ensures consistent residual stress distribution across the workpiece, extending its service life.

[0023] It should be noted that the heat treatment equipment provided by the exemplary embodiment of the present invention is applicable not only to forgings, but also to other workpieces that require heat treatment, such as castings.

[0024] Example 1

[0025] Figure 1is a schematic diagram of the main structure of a heat treatment device according to an embodiment of the present invention; Figure 2 Schematic diagram of the partial structure of a cooling control device according to an embodiment of the present invention. The residual stress heat treatment equipment for a workpiece 60 provided by an exemplary embodiment of the present invention includes a frame, a cooling control device 10, a temperature measuring device, and a controller 50. The cooling control device 10 includes an air supply device 20 and a plurality of jet units connected to the air supply device 20. Each jet unit is movably mounted on the frame via a movable module. The jet unit includes a connected tapered hose 14 and a nozzle 15. The cross-section of the tapered hose 14 increases as it approaches the nozzle 15, and the nozzle 15 faces the workpiece 60. The nozzle 15 includes a tube body, a telescopic device, and two opposing ear plates 153. The tube body is wound around a wall plate 151. The two ends of the wall panel 151 are formed to have overlapping parts, and the two ear plates 153 are respectively arranged on the outer wall surfaces of the wall panel 151 near the two ends; the telescopic device includes a first nut 156, a first screw rod 155 and a first motor 152 that is transmission-connected to the first screw rod 155, the first motor 152 is arranged on one ear plate 153, the first nut 156 is arranged on the first screw rod 155 and stops on the side of the other ear plate 153 away from the first motor 152; the temperature measuring device is used to obtain the temperature information of the workpiece 60, and the temperature measuring device, the mobile module and the first motor 152 are all communicatively connected to the controller 50.

[0026] In practical applications, a workpiece 60, such as a disc forging, needs to undergo a controlled cooling process after a heating treatment to obtain relatively uniform residual stresses and improve its microstructure, properties, and batch stability. The heated workpiece 60 is placed in a rack, and the cooling control device 10 is located on one side of the workpiece 60 so that the nozzles 15 in all or part of the jet units are directed toward the surface of the workpiece 60 (e.g., the circular end face of a circular disc forging). Air at a certain pressure is then blown onto the corresponding parts of the workpiece 60 for cooling. After the temperature measuring device measures the temperature distribution information of the workpiece 60, such as a thermal cloud map, the controller 50 calculates the parameters that require cooling control for each part based on the thermal cloud map, such as the coordinate information of each jet unit that needs to be moved and the diameter of the nozzle 15, controls the moving module to carry the corresponding jet unit into position, and controls the corresponding telescopic device to change the diameter of the nozzle 15, thereby finely controlling the temperature of the workpiece 60 by jetting.

[0027] Figure 4 is a schematic structural diagram of an air injection unit according to an embodiment of the present invention; Figure 5 Schematic diagram of the structure of the nozzle according to the embodiment of the present invention. Figure 4 and Figure 5As shown, the nozzle 15 is formed by winding a wall plate 151 with a certain degree of elasticity, with the two ends overlapping to form a complete nozzle. Two lugs 153 are respectively arranged near the two ends, and the two lugs 153 are arranged opposite each other on the outer wall of the nozzle. A first motor 152 is fixedly mounted on the outside of one lug 153 (on the side facing away from the other lug 153). After a first screw 155 connected to the first motor 152 passes through the two lugs 153, a first nut 156 (screw nut) is mounted on the outside of the other lug 153, thereby affixing the first nut 156 to the outer surface of the other lug 153. When the controller 50 controls the first motor 152, such as a servo motor, to rotate, the first screw 155 is driven to rotate, and the first nut 156 adapted to the first screw 155 moves on the first screw 155. For example, when the first nut 156 moves toward the first motor 152, the distance between the two lugs 153 decreases, and the nozzle diameter of the tube body decreases. When the first nut 156 moves away from the first motor 152, the tube body recovers its shape due to the elasticity of the wall plate 151, and the distance between the two lugs 153 increases, the nozzle diameter of the tube body increases, and the cooling gas covers a larger area. For example, the wall plate 151 can be a leaf spring.

[0028] Through the cooperation of the lead screw, the lead screw nut and the servo motor, the telescopic device can accurately control the diameter of the nozzle 15, making it easier to accurately achieve the consistency of the residual stress of the workpiece 60.

[0029] It should be noted that the tube body can be formed of an alloy material, composite material or plastic with a certain elasticity. On the one hand, the ends of the wall panels 151 with a certain elasticity overlap together to more easily achieve the sealing of the side surface of the tube body; on the other hand, when the caliber needs to be expanded, it can be achieved by restoring its own shape.

[0030] In some embodiments, the telescopic device can also be extended and retracted by a cylinder, which is fixed on one ear plate 153, and the telescopic end of the cylinder is fixed on the other ear plate 153. The distance between the two ear plates 153 is changed by the extension and retraction of the cylinder to adjust the diameter of the nozzle.

[0031] Exemplarily, the jet unit further includes an elastic collar, and the conical hose 14 is sleeved on the outer wall surface of the tube body through the elastic collar.

[0032] Continue as Figure 4As shown, the edge of the tapered hose 14 is sleeved on the outer wall of the tube body. Under the elastic action of the elastic ring, the edge of the tapered hose 14 always fits on the tube body when the diameter of the tube body changes. The tapered hose 14 has a certain rigidity to support the nozzle 15, and the tapered hose 14 can be connected to the nozzle 15 with a larger diameter as a transition of the pipeline. At the same time, the tapered hose 14 has a certain elasticity that can change with the diameter of the nozzle 15.

[0033] Combine Figure 4 and Figure 5 As shown, the nozzle 15 further includes a plurality of guide rods 154 , one end of the guide rod 154 is fixed on one ear plate 153 , and the other end passes through a guide hole on the other ear plate 153 .

[0034] For example, there are four guide rods 154, roughly distributed at the four corners of the rectangular lugs 153. One end of each guide rod 154 is fixed to one lug 153, while the other lug 153 has four guide holes for the guide rods 154 to slide within. This allows the two lugs 153 to move stably under the control of the telescopic device. It is understood that a slight change in the spacing between the two lugs 153, resulting in a change in the nozzle 15 diameter, can achieve the desired adjustment of the jet area.

[0035] For example, a linear bearing may be provided in the guide hole of the ear plate 153 so that the guide rod 154 can slide smoothly on the ear plate 153 to play a guiding role.

[0036] Figure 3 Schematic diagram of the axonometric structure of the mobile module according to the embodiment of the present invention. Figure 3 and Figure 1 As shown, the moving module of an exemplary embodiment of the present invention includes a plurality of first wire rails 161 extending along a first direction and a plurality of first moving members 163 movably arranged on the first wire rails 161; each jet unit is arranged on a corresponding first moving member 163, and the first moving member 163 is communicated with the controller 50.

[0037] In some embodiments, the movable module further includes two second wire rails 162 extending along a second direction and a plurality of second movable members 164 movably arranged on each second wire rail 162; wherein the second direction is perpendicular to the first direction; the two ends of each first wire rail 161 are respectively arranged on the corresponding second movable members 164 on the two second wire rails 162, and the second movable members 164 are communicatively connected to the controller 50.

[0038] In actual application, in the initial state, a plurality of jet units are distributed roughly in the form of an array, and their distribution area may be larger than the size of the workpiece 60. A plurality of first wire rails 161 are arranged in parallel and extend along the first direction. A plurality of first moving members 163 are arranged on each first wire rail 161, and a corresponding jet unit is arranged on each first moving member 163. The first moving member 163 and the second moving member 164 are both in the form of a combination of a lead screw nut and a servo motor, wherein the lead screw nut is adapted to the first wire rail 161 or the second wire rail 162, that is, each first moving member 163 and the second moving member 164 can be moved individually under the control of the controller 50. That is, each jet unit can be moved to a corresponding position in the first direction under the drive of the first moving member 163.

[0039] The two ends of each first wire rail 161 are respectively arranged on a corresponding group (two) of second moving parts 164 of the two second wire rails 162, that is, each first wire rail 161 moves to the corresponding position in the second direction under the drive of the group of second moving parts 164, that is, each jet unit can move in two directions, so that it can reach the corresponding position of the workpiece 60 to be cooled.

[0040] like Figure 2 As shown, the cooling control device 10 of the exemplary embodiment of the present invention further includes a plurality of connected flow valves 12 and bellows 13 , and each air injection unit is connected to the air supply device 20 through the corresponding flow valve 12 and bellows 13 .

[0041] Exemplarily, a diverter 11, a flow valve 12 and a bellows 13 are sequentially arranged on the pipeline between the air supply device 20 and the jet unit, wherein the air inlet of the diverter 11 is connected to the air supply device 20, and the multiple air outlets thereof are connected to the corresponding jet units through the flow valve 12 and the bellows 13 respectively.

[0042] The flow valve 12 can be connected to the controller 50 and can be used to control the flow of gas and thus the cooling rate of the corresponding area of ​​the workpiece 60 by the nozzle 15. The bellows 13 can be a corrugated hose with a certain degree of flexibility. It is connected to the conical hose in the jet unit on the first movable member 163. When the jet unit moves, the flexibility of the bellows 13 will not affect the passage of gas. It is understandable that the gas outlet of the diverter 11 corresponds to the jet unit one by one, and a flow valve 12 and a bellows 13 are provided between the gas outlet of each diverter 11 and the jet unit, so that the gas flow of each nozzle 15 can be independently controlled.

[0043] like Figure 1 As shown, the number of the cooling control devices 10 in the exemplary embodiment of the present invention is two, and the two cooling control devices 10 are respectively arranged on both sides of the workpiece 60 .

[0044] In actual applications, the workpiece 60 to be cooled is placed in the middle position between the two cooling control devices 10. For example, the heat treatment equipment further includes a lifting device disposed in the middle portion of the frame, which is used to place the workpiece 60 in the middle position between the two cooling control devices 10. The lifting device can be a frame structure supported by multiple hydraulic cylinders. The frame structure can support the portion of the workpiece 60 near the edge, thereby separating it from the carrier 31 of the transfer device 30 and lifting it to a suitable height to facilitate the withdrawal of the carrier 31 of the transfer device 30.

[0045] For example, the workpiece 60, such as a disc forging, is placed flat on the frame structure, and two cooling control devices 10 are arranged on the upper and lower sides of the disc forging in a mirror-symmetrical manner, and the nozzles 15 are both directed toward the disc forging to cool it from both sides, thereby more finely controlling the cooling position, cooling area size and cooling speed of various parts of the workpiece 60, thereby optimizing the residual stress and mechanical properties of the workpiece 60.

[0046] Exemplarily, the temperature measuring device can be a plurality of infrared thermometers, which are arranged on the rack and located between the two cooling control devices 10 to form a thermal cloud map of the workpiece 60, detect the temperature changes of the disc forging in real time, and calculate the cooling parameters at the corresponding positions of the workpiece 60 through the controller 50.

[0047] Exemplarily, two air supply devices 20 are respectively arranged at the top and bottom of the frame. The air supply devices 20 can be an air compressor and an air storage tank, which are connected to the air inlet of the diverter 11 through a hose.

[0048] Example 2

[0049] Based on Example 1, the heat treatment equipment of the exemplary embodiment of the present invention also includes a transfer device 30, a heating furnace 40 and a track arranged between the heating furnace 40 and the frame, and the heating furnace 40 is used to heat the workpiece 60; the transfer device 30 is movably arranged on the track, and the transfer device 30 is used to transfer the workpiece 60 in the heating furnace 40 to the corresponding position of the cooling control device 10.

[0050] In practice, the heating furnace 40 strictly controls the heating time of the disc forgings, while the transfer device 30 strictly controls the transfer time via a CNC servo motor. Specifically, under the control of the controller 50, the heating furnace 40 heats the disc forgings according to a set program. When the time is right, the furnace door is opened and the transfer device 30 is used to remove the disc forgings. The disc forgings are then transported via rails to the controlled cooling device 10. The frame structure of the lifting device supports the disc forgings and is raised, allowing them to be removed from the transfer device 30.

[0051] Figure 6 Schematic diagram of the structure of the transfer device according to the embodiment of the present invention. Figure 6The transfer device 30 of the exemplary embodiment of the present invention includes a base plate 37, a track plate 32, a lifting mechanism and a carrier 31 for carrying the workpiece 60. The lifting mechanism is arranged between the base plate 37 and the track plate 32; the carrier 31 is movably arranged on the track plate 32 through track wheels, and the base plate 37 is arranged on the track through rollers.

[0052] In some embodiments, the rollers on the base plate 37 are connected to the servo motor, and the base plate 37 is driven to move on the track by the control rollers of the controller 50. For example, the rollers can be H-type track wheels, which are four and are arranged at the bottom of the base plate 37 respectively.

[0053] In some embodiments, the bottom of the above-mentioned carrier 31 has four T-shaped track wheels, each track wheel is connected to the servo motor, and a track that cooperates with the T-shaped track wheel is provided on the track plate 32. Driven by the track wheel, the carrier 31 can move relative to the track plate 32, and can move to the top of the lifting device in the frame with the cooperation of the track on the frame, so that the frame structure can lift the workpiece 60.

[0054] Continue to see Figure 6 The bottom plate 37 and the track plate 32 are connected by a lifting mechanism so that the platform 31 can be raised and lowered to meet the needs of taking and placing the workpiece 60.

[0055] Specifically, the lifting mechanism includes two connecting rod assemblies arranged in a mirror-symmetrical manner, each connecting rod assembly includes a first rod 331, a second rod 332, a third rod 333, a fourth rod 334 and a pin 36. One end of the first rod 331 is hinged to the track plate 32, and the other end is hinged to the first end of the pin 36. One end of the second rod 332 is hinged to the base plate 37, and the other end is hinged to the first end of the pin 36; one end of the third rod 333 is hinged to the track plate 32, and the other end is hinged to the second end of the pin 36. One end of the fourth rod 334 is hinged to the base plate 37, and the other end is hinged to the second end of the pin 36.

[0056] A drive device is also provided between the two connecting rod assemblies. Specifically, it includes two screw nuts, a second screw 34, and a second motor 35. The second motor 35 can be a through-type stepper motor. The two screw nuts are respectively located in the middle position of the two pins 36. The two ends of the screw after passing through the stepper motor are respectively adapted to the two screw nuts. When the through-type stepper motor drives the second screw 34 to rotate, the distance between the two screw nuts increases or decreases, thereby driving the height of the two connecting rod assemblies to increase or decrease, and realizing the lifting and lowering of the carrier 31. Based on this, the lifting and lowering distance of the carrier can be more accurately controlled by the cooperation of the screw, screw nut and stepper motor.

[0057] Example 3

[0058] On the basis of Example 2, the lifting mechanism is replaced by a hydraulic cylinder or an electric cylinder. For example, multiple hydraulic cylinders are fixed on the base plate 37, and the hydraulic rods of the hydraulic cylinders are connected to the track plate 32. The controller 50 controls the hydraulic cylinders to control the lifting of the track plate 32 and the platform 31.

[0059] From the above, it can be seen that the heat treatment equipment provided by the exemplary embodiment of the present invention can realize closed-loop control of the heating, transfer and cooling of the workpiece. The cooling control device can dynamically adjust the cooling position, cooling area size and cooling speed according to real-time temperature monitoring. Therefore, it can effectively regulate the residual stress and mechanical properties of the disc forging, make the residual stress consistent, and improve the stability of the workpiece batch.

[0060] It should be understood by those skilled in the art that the above embodiments are merely for the purpose of illustrating the present invention clearly, and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and such changes or modifications are still within the scope of the present invention.

Claims

1. A workpiece residual stress heat treatment equipment, characterized in that: The machine comprises a rack, a cooling control device, a temperature measuring device and a controller, wherein the cooling control device comprises an air supply device and a plurality of jet units connected to the air supply device; each jet unit is movably arranged on the rack through a movable module; The jet unit includes a connected tapered hose and a nozzle, wherein the cross section of the tapered hose increases in a direction approaching the nozzle, and the nozzle faces the workpiece; The nozzle includes a tube body, a telescopic device, and two opposite ear plates. The tube body is formed by winding a wall plate. The two ear plates are respectively arranged on the outer wall surface of the wall plate near both ends. The telescopic device includes a first screw nut, a first screw, and a first motor connected to the first screw, wherein the first motor is arranged on one of the lugs, and the first screw nut is arranged on the first screw and abuts against a side of the other lug facing away from the first motor. The temperature measuring device is used to obtain temperature information of the workpiece. The temperature measuring device, the moving module and the first motor are all communicatively connected to the controller.

2. The heat treatment equipment according to claim 1, characterized in that The jet unit further comprises an elastic collar, and the conical hose is sleeved on the outer wall surface of the tube body through the elastic collar.

3. The heat treatment equipment according to claim 1, characterized in that The nozzle further comprises a plurality of guide rods, one end of each guide rod being fixedly mounted on one of the lug plates, and the other end of each guide rod passing through a guide hole on another of the lug plates.

4. The heat treatment equipment according to any one of claims 1 to 3, characterized in that: The moving module includes a plurality of first wire rails extending along a first direction and a plurality of first moving members movably arranged on the first wire rails; Each of the jetting units is provided on a corresponding first moving member, and the first moving member is in communication with the controller.

5. The heat treatment equipment according to claim 4, characterized in that The moving module further includes two second wire rails extending along a second direction and a plurality of second moving members movably arranged on each of the second wire rails; wherein the second direction is perpendicular to the first direction; Two ends of each of the first wire rails are respectively arranged on the corresponding second moving parts on the two second wire rails, and the second moving parts are communicatively connected with the controller.

6. The heat treatment equipment according to any one of claims 1 to 3, characterized in that: The cooling control device further includes a plurality of connected flow valves and bellows, and each of the jet units is connected to the air supply device via the corresponding flow valve and the bellows.

7. The heat treatment equipment according to claim 6, characterized in that There are two cooling control devices, which are respectively arranged on both sides of the workpiece.

8. The heat treatment equipment according to claim 7, characterized in that The heat treatment equipment further comprises a lifting device arranged in the middle portion of the frame, and the lifting device is used to place the workpiece in the middle position between the two cooling control devices.

9. The heat treatment equipment according to claim 6, characterized in that The heat treatment equipment further includes a transfer device, a heating furnace, and a track provided between the heating furnace and the frame, wherein the heating furnace is used to heat the workpiece; The transfer device is movably arranged on the track, and is used to transfer the workpiece in the heating furnace to a corresponding position of the cooling control device.

10. The heat treatment equipment according to claim 9, characterized in that The transfer device includes a base plate, a track plate, a lifting mechanism, and a platform for carrying the workpiece, wherein the lifting mechanism is arranged between the base plate and the track plate; The carrier is movably arranged on the track plate via track wheels, and the bottom plate is arranged on the track via rollers.

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