Temperature compensation device and temperature compensation control method

Abstract

The invention provides a temperature compensation device and a temperature compensation control method, and relates to the technical field of material processing.The temperature compensation device comprises an annular mounting frame, a moving control unit and a temperature compensation piece, the moving control unit is arranged on the annular mounting frame, and the temperature compensation piece is arranged on the moving control unit; the mobile control unit comprises a first guide rail, a first contact sensor, a second contact sensor and a contact induction controller, the first guide rail is arranged on the annular mounting frame, and the temperature compensation piece is slidably arranged on the first guide rail; the first contact sensors are arranged at the two ends of the first guide rail, the second contact sensor is connected with the temperature compensation piece, and the first contact sensors and the second contact sensor are electrically connected with the contact induction controller. Long-acting heat preservation of the surface of the forge piece can be achieved, and the problem that cracks and mixed crystal structures appear on the surface of the forge piece due to reduction of the surface temperature of the forge piece is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of material processing, and in particular to a temperature compensation device and a temperature compensation control method. Background Art

[0002] The high degree of alloying of nickel-based alloy forgings leads to a low melting point, which reduces the upper limit of the hot working temperature of the alloy. The increase in the degree of alloying will also increase the recrystallization temperature of the alloy. Since hot working is performed above the recrystallization temperature, the increase in the recrystallization temperature will also increase the lower limit of the hot working temperature. This makes the hot working temperature range of nickel-based alloy forgings narrow. In the actual forging process, the surface of the nickel-based alloy forging is in direct contact with the external environment, and the temperature drops rapidly, deviating from the optimal processing temperature range. After cooling, the thermoplasticity of the forging surface deteriorates, which can easily cause cracks on the forging surface and the appearance of mixed crystal structure, which cannot meet the actual forging needs.

[0003] Therefore, in the prior art, forgings are usually insulated by using insulating asbestos and spraying insulating coatings on the surface of forgings. However, since the insulating asbestos is in constant contact with the forgings, it is easy for the asbestos to fall off after a period of insulation, and the insulating coating is generally a water-based coating, which will cause a significant drop in temperature on the surface of the forgings during spraying. None of the above insulation methods can achieve long-term insulation of the forging surface. Summary of the invention

[0004] In order to achieve long-term heat preservation of the forging surface and improve the problem of cracks and mixed crystal structure on the surface of the forging caused by the reduction of the surface temperature of the forging, the present invention provides a temperature compensation device and a temperature compensation control method.

[0005] In a first aspect, the present invention provides a temperature compensation device, comprising an annular mounting frame, a mobile control unit and a temperature compensation component;

[0006] The mobile control unit includes a first guide rail, a first contact sensor, a second contact sensor and a contact sensing controller, wherein the first guide rail is arranged on the annular mounting frame along the circumference of the annular mounting frame, the temperature compensation component is slidably arranged on the first guide rail, and the temperature compensation component is used to spray flame or high-temperature gas toward the central axis along the radial direction of the annular mounting frame;

[0007] The first contact sensor is arranged at two ends of the first guide rail, the second contact sensor is connected to the temperature compensation component, and the first contact sensor and the second contact sensor are electrically connected to the contact sensing controller respectively;

[0008] The second contact sensor and the first contact sensor are used for contact sensing and feeding back the contact sensing signal to the contact sensing controller, and the contact sensing controller is used to change the movement direction of the temperature compensation component according to the contact sensing signal so that the temperature compensation component reciprocates between the two first contact sensors.

[0009] Optionally, the number of the mobile control units and the temperature compensating components are plural and in one-to-one correspondence, and the multiple pairs of the mobile control units and the temperature compensating components are distributed at intervals along the circumference of the annular mounting frame.

[0010] Optionally, the mobile control unit further comprises a connecting portion, one end of which is detachably connected to the annular mounting frame, and the other end of which is connected to the first guide rail.

[0011] Optionally, the first guide rail is detachably connected to the annular mounting frame.

[0012] Optionally, the temperature compensation device further includes a size adjustment unit, wherein the size adjustment unit is disposed on the annular mounting frame, and the size adjustment unit is used to adjust the size of the annular mounting frame.

[0013] Optionally, the material of the annular mounting frame is a flexible material, the annular mounting frame is a non-closed annular shape and includes a first end and a second end;

[0014] The size adjustment unit includes a distance sensor and a size adjustment controller, wherein the distance sensor and the size adjustment controller are electrically connected, and the distance sensor is arranged on the annular mounting frame to detect the radial distance between the annular mounting frame and the forging, and the size adjustment controller is used to control the first end and the second end to move closer to or farther from each other according to the detection value of the radial distance, so as to shrink or expand the annular mounting frame.

[0015] Optionally, the temperature compensation device further comprises a support seat, the support seat is provided with a second guide rail, and the first end and / or the second end of the annular mounting frame can slide along the second guide rail.

[0016] Optionally, the temperature compensation component is a flame spray gun.

[0017] Optionally, the temperature compensation device further includes a gas regulating unit, the gas regulating unit includes a first temperature sensor, a second temperature sensor and a gas flow controller, the first temperature sensor is used to detect the temperature of the ignition point of the flame spray gun, and the second temperature sensor is used to detect the temperature of the forging;

[0018] The gas flow controller is used to control the gas flow entering the flame spray gun according to the temperature of the ignition point of the flame spray gun, the temperature of the forging and the detected value of the radial distance.

[0019] In a second aspect, the present invention further provides a temperature compensation control method, which is based on the above-mentioned temperature compensation device and includes:

[0020] respectively obtaining the temperature value of the ignition point and the temperature value of the forging surface, and the detection value of the radial distance between the annular mounting frame and the forging surface;

[0021] Obtaining a gas flow value based on the temperature value of the ignition point, the temperature value of the forging surface and the detection value of the radial distance;

[0022] The gas flow rate is calculated according to formula (I):

[0023]

[0024] In formula (I), Q is the gas flow value, T1 is the temperature value of the ignition point, T2 is the temperature value of the forging surface, d is the nozzle diameter of the temperature compensation part, L is the detection value of the radial distance between the annular mounting frame and the forging surface, and k is the thermal conductivity of the air.

[0025] The beneficial effects of the present invention compared to the prior art are:

[0026] The temperature compensation component in the embodiment of the present invention is installed on the annular mounting frame through a mobile control unit, and the forging passes through the annular mounting frame. The mobile control unit can drive the temperature compensation component to reciprocate along the circumference of the annular mounting frame at a set distance, and the set distance is the distance between the two first contact sensors at both ends of the first guide rail. Specifically, the temperature compensation component moves along the first guide rail under the driving force until the second contact sensor on the temperature compensation component and one of the first contact sensors are contacted and sensed. At this time, the contact sensing controller receives the contact sensing signal and changes the movement direction of the temperature compensation component, so that it moves in the opposite direction until the first contact sensor at the other end of the first guide rail and the second contact sensor are contacted and sensed again, thereby realizing the reciprocating movement of the temperature compensation component between the two first contact sensors of the first guide rail. Therefore, the present invention sprays flames or high-temperature gases to the surface of the forging through the temperature compensation component to achieve temperature compensation on the surface of the forging; and drives the temperature compensation component to move along the circumference through the mobile control unit, so that the surface of the forging is evenly heated, further improving the temperature compensation effect. Since the temperature compensation device in the present invention can continuously compensate the temperature of the forging, it is not easy to lose heat over time, and long-term heat preservation can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the temperature compensation device in an embodiment of the present invention;

[0028] Figure 2 for Figure 1 A magnified schematic diagram of the middle A area;

[0029] Figure 3 is a schematic diagram of a mobile control unit in an embodiment of the present invention;

[0030] Figure 4 Schematic diagram of a size adjustment unit and a gas adjustment unit in an embodiment of the present invention;

[0031] Figure 5 This is a microscopic image of the forging surface in Example 1;

[0032] Figure 6 is a surface diagram of the forging in Example 2;

[0033] Figure 7 This is a microscopic image of the forging surface in the comparative example.

[0034] Description of reference numerals:

[0035] 1. Annular mounting frame; 11. First end; 12. Second end; 2. Mobile control unit; 21. First guide rail; 211. Abutment wall; 22. First contact sensor; 23. Second contact sensor; 24. Contact sensing controller; 25. Sliding seat; 26. Connecting part; 3. Temperature compensation component; 4. Size adjustment unit; 41. Distance sensor; 42. Size adjustment controller; 5. Support seat; 51. Second guide rail; 6. Air supply pipe; 7. Gas regulating unit; 71. First temperature sensor; 72. Second temperature sensor; 73. Gas flow controller. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0037] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0038] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0039] In order to achieve long-term heat preservation of the forging surface and improve the problem of cracks and mixed crystal structure on the surface of the forging caused by the decrease of the surface temperature of the forging, this embodiment provides a temperature compensation device and a temperature compensation control method.

[0040] Reference Figure 1 and Figure 3 As shown, the temperature compensation device includes an annular mounting frame 1, a mobile control unit 2 and a temperature compensation component 3. The mobile control unit 2 includes a first guide rail 21, a first contact sensor 22, a second contact sensor 23 and a contact sensing controller 24. The first guide rail 21 is arranged on the annular mounting frame 1 along the circumference of the annular mounting frame 1. The temperature compensation component 3 is slidably arranged on the first guide rail 21, and the temperature compensation component 3 is used to spray flames or high-temperature gases along the radial direction of the annular mounting frame 1 toward the central axis. The first contact sensor 22 is arranged at both ends of the first guide rail 21, the second contact sensor 23 is connected to the temperature compensation component 3, and the first contact sensor 22 and the second contact sensor 23 are electrically connected to the contact sensing controller 24 respectively. The second contact sensor 23 and the first contact sensor 22 are used for contact sensing, and the contact sensing signal is fed back to the contact sensing controller 24. The contact sensing controller 24 is used to change the movement direction of the temperature compensation component 3 according to the contact sensing signal, so that the temperature compensation component 3 reciprocates between the two first contact sensors 22.

[0041] It should be noted that the temperature compensation device in the embodiment of the present invention is mainly used to compensate the temperature of shaft forgings. In the actual forging process, in order to prevent the surface of the shaft forgings from cooling too quickly, the shaft forgings can be clamped by the manipulator and passed through the annular mounting frame 1, and the shaft forgings can be located in the middle of the annular mounting frame 1. For long shaft forgings, multiple temperature compensation devices can be set along the axial direction of the forgings to compensate the temperature of their surfaces.

[0042] The temperature compensation component 3 in the embodiment of the present invention is installed on the annular mounting frame 1 through the mobile control unit 2. The forging passes through the annular mounting frame 1. The mobile control unit 2 can drive the temperature compensation component 3 to reciprocate along the circumference of the annular mounting frame 1 at a set distance. The set distance is the distance between the two first contact sensors 22 at both ends of the first guide rail 21. Specifically, the temperature compensation component 3 moves along the first guide rail 21 under the driving force until the second contact sensor 23 on the temperature compensation component 3 and one of the first contact sensors 22 are contacted and sensed. At this time, the contact sensing controller 24 receives the contact sensing signal and changes the movement direction of the temperature compensation component 3, so that it moves in the opposite direction until the first contact sensor 22 at the other end of the first guide rail 21 and the second contact sensor 23 are contacted and sensed again, thereby realizing the reciprocating movement of the temperature compensation component 3 between the two first contact sensors 22 of the first guide rail 21. Therefore, the present invention sprays flames or high-temperature gas to the surface of the forging through the temperature compensation component 3 to achieve temperature compensation on the surface of the forging; and drives the temperature compensation component 3 to move along the circumference through the mobile control unit 2, so that the surface of the forging is evenly heated, further improving the temperature compensation effect. Since the temperature compensation device in the present invention can continuously compensate the temperature of the forging, it is not easy for heat to be lost over time, and long-term heat preservation can be achieved.

[0043] In some optional embodiments, referring to Figure 1 and Figure 2 As shown, the mobile control unit 2 also includes a slide 25, which is slidably arranged on the first guide rail 21, and the temperature compensation component 3 is arranged on the slide 25. The temperature compensation component 3 can be fixedly connected to the slide 25, or can be detachably connected by screws or the like. A rotatable roller group is installed on the slide 25, which can be specifically two groups, each roller group includes two rollers distributed at intervals, and the first guide rail 21 is clamped between the two rollers, so as to realize the sliding connection between the slide 25 and the first guide rail 21. Further, the first guide rail 21 can be detachably connected to the annular mounting frame 1, such as by magnetic connection or screw connection, etc. Of course, in some embodiments, the first guide rail 21 can also be fixedly connected to the annular mounting frame 1. The first guide rail 21 can be an arc shape that matches the shape of the annular mounting frame 1, or it can be a linear guide rail with both ends connected to the annular mounting frame 1.

[0044] Further, in some optional embodiments, referring to Figure 2As shown, both ends of each first guide rail 21 have abutment walls 211 extending toward the center direction of the annular mounting frame 1, each first contact sensor 22 is installed in the corresponding abutment wall 211, and the second contact sensor 23 is installed in the slide 25. When the slide 25 moves along the first guide rail 21 to contact one of the abutment walls 211, the first contact sensor 22 and the second contact sensor 23 are contact-sensed, and the contact-sensing controller 24 receives the signal and controls the corresponding driving member to make the slide 25 move in the opposite direction. Of course, the number of the second contact sensors 23 can also be two, and the two second contact sensors 23 can be distributed on the two sides of the slide 25 close to the two abutment walls 211. When the slide moves to the vicinity of the abutment wall 211, the second contact sensor 23 on its side is contact-sensed with the first contact sensor 22 on the abutment wall 211. Specifically, the slide 25 can be driven by a servo motor, and the motor is precisely controlled by the controller to achieve precise positioning and speed control of the slide.

[0045] Reference Figure 1 As shown, the mobile control unit 2 further includes a connection part 26, one end of which is detachably connected to the annular mounting frame 1 by means of screws or magnetism, and the other end is fixedly connected or detachably connected to the first guide rail 21. The connection part 26 is used to separate the first guide rail 21 from the annular mounting frame 1, so that there is a certain distance between the first guide rail 21 and the annular mounting frame 1. Furthermore, the connection part 26 is detachably connected to the annular mounting frame 1, which can facilitate the adjustment of the relative positions of the first guide rail 21 and the temperature compensation component 3 on the annular mounting frame 1, so that the temperature compensation component 3 is evenly distributed on the annular mounting frame 1.

[0046] In some optional embodiments, referring to Figure 1 As shown, the temperature compensation device also includes an air supply pipe 6, which can be arranged in the annular mounting frame 1, and each temperature compensation component 3 is connected to the air supply pipe 6. Specifically, when the temperature compensation component 3 is a flame spray gun, the air supply pipe 6 contains fuel gas such as natural gas or coal gas, and the flame spray gun has its own ignition device, which can automatically ignite after the gas is connected; when the temperature compensation component 3 is a gas nozzle, the air supply pipe 6 contains high-temperature and high-pressure gas such as nitrogen and argon. The air supply pipe 6 is connected to an external gas source, and a damping switch is provided at the connection to control the flow of the gas or high-temperature and high-pressure gas. The material of the air supply pipe 6 can be a stainless steel corrugated pipe or an aluminum-plastic composite pipe, which has excellent mechanical properties, corrosion resistance and insulation properties. In addition, the air supply pipe 6 has sufficient margin outside the annular mounting frame 1 to ensure that the temperature compensation component 3 can circulate on the first guide rail 21.

[0047] In some optional embodiments, referring to Figure 1As shown, the number of mobile control units 2 and temperature compensation components 3 is multiple and one-to-one corresponding, and multiple pairs of mobile control units 2 and temperature compensation components 3 are spaced and distributed along the circumference of the annular mounting frame 1, so that uniform temperature compensation can be achieved in various areas of the outer circumference of the forging without rotating the forging, thereby improving the forming quality of the forging. In addition, compared with setting a pair of annular mobile control units 2 and temperature compensation components 3 along the circumference of the entire annular mounting frame 1, setting multiple pairs of mobile control units 2 and temperature compensation components 3 along the circumference of the annular mounting frame 1 can make the moving stroke of each temperature compensation component 3 along the mobile control unit 2 smaller, thereby facilitating the connection between the temperature compensation component 3 and the air supply pipe 6.

[0048] In some optional embodiments, referring to Figure 1 As shown, the temperature compensation device further includes a size adjustment unit 4, which is used to adjust the size of the annular mounting frame 1. When the inner diameter of the forging to be temperature compensated changes, the size adjustment unit 4 can be adjusted to change the size of the annular mounting frame 1, thereby adjusting the distance between the temperature compensation member 3 and the forging surface, thereby achieving temperature compensation for forgings of different sizes.

[0049] Optionally, refer to Figure 1 As shown, the temperature compensation device also includes a support seat 5, which is arranged at the bottom of the annular mounting frame 1. In actual use, the support seat 5 is close to the ground. In order to improve the overall stability of the temperature compensation device, an external counterweight can be added to the support seat 5. The material of the annular mounting frame 1 is a flexible material, which can be rubber, alloy spring steel, etc. The annular mounting frame 1 is a non-closed ring and includes a first end 11 and a second end 12. Specifically, the annular mounting frame 1 is disconnected at the support seat 5, and a second guide rail 51 is provided on the support seat 5. The first end 11 and / or the second end 12 can slide along the second guide rail 51. The size adjustment unit 4 is used to control the first end 11 and the second end 12 to move closer to or away from each other, so that the annular mounting frame 1 can shrink or expand. Specifically, the first end 11 and the second end 12 of the annular mounting frame 1 are respectively located at the two ends of the second guide rail 51, one end of which is a movable end and the other end is a fixed end. The movable end can move closer to or away from the fixed end under the drive of a servo motor. Or, both the first end 11 and the second end 12 can move closer to or away from each other under the drive of a servo motor. The second guide rail 51 can be a straight rail provided on the support seat 5 , or can be an arc-shaped guide rail adapted to the shape of the annular mounting frame 1 .

[0050] In some optional embodiments, referring to Figure 4As shown, the size adjustment unit 4 includes a distance sensor 41 and a size adjustment controller 42, and the distance sensor 41 and the size adjustment controller 42 are electrically connected. The distance sensor 41 is located on the annular mounting frame 1, and is used to detect the radial distance between the annular mounting frame 1 and the surface of the forging, and feed back the detection value of the radial distance to the size adjustment controller 42. The size adjustment controller 42 is used to control the first end 11 and the second end 12 to move closer or farther from each other according to the detection value of the radial distance, so as to shrink or expand the annular mounting frame 1. Among them, the detection value of the radial distance is the shortest distance from the installation point of the distance sensor 41 on the annular mounting frame 1 to the surface of the forging.

[0051] Specifically, the number of the distance sensors 41 may be four, and the four distance sensors 41 are distributed on the inner side wall of the annular mounting frame 1 at intervals along the circumferential direction and staggered with the mobile control unit 2. It should be noted that since the first guide rail 21 and the annular mounting frame 1 are separated by the connecting portion 26, when the annular mounting frame 1 is deformed for size adjustment, the first guide rail 21 and the temperature compensation component 3 will not be affected by the deformation of the annular mounting frame 1 and can work stably.

[0052] In the embodiment of the present invention, the working principle of the size adjustment unit 4 is as follows: the upper limit value and the lower limit value of the radial distance between the annular mounting frame 1 and the forging surface are set in advance in the size adjustment controller 42, and then the radial distance between the annular mounting frame 1 and the forging surface is detected by the distance sensor 41, and the detection value of the radial distance is fed back to the size adjustment controller 42. The size adjustment controller 42 compares and analyzes the radial distance detection value with the upper limit value and the lower limit value of the radial distance. If the radial distance detection value is less than the lower limit value of the radial distance, a control signal is issued to move the first end 11 and the second end 12 of the annular mounting frame 1 away from each other; if the radial distance detection value is greater than the upper limit value of the radial distance, a control signal is issued to move the first end 11 and the second end 12 of the annular mounting frame 1 closer to each other. In some specific embodiments, the upper limit value of the radial distance can be set to 600 mm, and the lower limit value of the radial distance can be set to 500 mm.

[0053] In the embodiment of the present invention, the radial distance detection value between the annular mounting frame 1 and the forging surface is obtained in real time, and then the size of the annular mounting frame 1 is adjusted according to the real-time detection value of the radial distance, so that the temperature compensation device is suitable for shaft forgings with different inner diameters. When the shaft forgings are stepped parts with large diameter and small diameter, the temperature compensation device can be automatically adjusted to improve the convenience of use.

[0054] In some optional embodiments, the temperature compensation component 3 can be a flame spray gun or a gas nozzle, wherein the flame spray gun can spray flames for temperature compensation, and the gas nozzle can spray high-temperature and high-pressure gas for temperature compensation. As an example, the high-temperature and high-pressure gas can be an inert gas such as nitrogen and argon, or it can be a gas generated by burning fuel in a flame heating furnace, with a temperature between 300-500°C.

[0055] In some optional embodiments, when the temperature compensation component 3 is a flame spray gun, the temperature compensation device further includes a gas regulating unit 7, referring to Figure 1 and Figure 4 As shown, the gas regulating unit 7 includes a first temperature sensor 71, a second temperature sensor 72 and a gas flow controller 73, and the distance sensor 41, the first temperature sensor 71, and the second temperature sensor 72 are electrically connected to the gas flow controller 73 respectively. The first temperature sensor 71 is used to detect the temperature of the ignition point, and the second temperature sensor 72 is used to detect the temperature of the forging surface. The gas flow controller 73 is used to control the gas flow rate entering each temperature compensation component 3 according to the temperature difference between the ignition point and the forging surface. Among them, the first temperature sensor 71 can be installed on the temperature compensation component 3, and the second temperature sensor 72 can be installed on the annular mounting frame 1. The gas flow controller 73 can send a control signal to adjust the opening size of the damping switch on the gas supply pipe 6, so as to achieve the effect of controlling the gas flow rate.

[0056] In some optional embodiments, the contact sensing controller 24, the size adjustment controller 42, and the gas flow controller 73 in the embodiment of the present invention can be integrated into a controller group, which is arranged outside the annular mounting frame 1, so that it is more convenient for the operator to control according to different working conditions. In order to obtain a better temperature compensation effect, multiple temperature compensation devices can be configured according to the length of the forging to meet the temperature compensation requirements, and multiple temperature compensation devices can adopt a controller group for movement, size adjustment and gas flow control.

[0057] In a second aspect, the present invention further provides a temperature compensation control method based on the above temperature compensation device, the temperature compensation control method comprising:

[0058] respectively obtaining the temperature value of the ignition point and the temperature value of the forging surface, and the radial distance value between the annular mounting frame 1 and the forging surface;

[0059] The gas flow value is obtained based on the temperature value of the ignition point, the temperature value of the forging surface and the radial distance value between the annular mounting frame 1 and the forging surface.

[0060] Among them, the gas flow value can be calculated according to formula (I):

[0061]

[0062] In formula (I), Q is the gas flow value, T1 is the temperature value of the ignition point, T2 is the temperature value of the forging, L is the detection value of the radial distance between the annular mounting frame and the forging surface, d is the nozzle diameter of the temperature compensation component, and k is the thermal conductivity of the air.

[0063] In the embodiment of the present invention, the gas flow value is comprehensively determined based on the temperature difference between the ignition point and the forging surface and the detection value of the radial distance between the annular mounting frame and the forging surface, so that the gas flow value can be accurately regulated according to changes in factors such as the temperature loss, heat conduction distance, and heat conduction area during the heat conduction process, thereby avoiding the impact on the forging quality due to overheating or insufficient temperature compensation.

[0064] The present invention is described in detail below through specific embodiments:

[0065] Example 1

[0066] This embodiment is aimed at the long-axis forging of IN706 alloy after homogenization heat treatment and blanking forging. The length of the forging is about 3200mm. The specific heating steps include:

[0067] S1: Operate the overhead crane to transport the forging to the operating range of the hydraulic press, place a temperature compensation device between the hydraulic press and the operating machine, clamp the forging through the annular mounting frame 1, and transport it to the appropriate position of the anvil, then adjust the forging to the middle position of the annular mounting frame 1, and prepare for pulling.

[0068] S2: Start the temperature compensation device, and adjust the size of the annular mounting frame 1 through the size adjustment unit 4 to make it more suitable for the forging. Start the hydraulic press, stretch it according to the program settings, and record the forging parameters during the forging process to observe the surface cracking.

[0069] In this embodiment, the forging and drawing process takes a short time, and the microscopic image of the forging surface is as follows: Figure 5 As shown in the figure, the number of surface cracks is significantly reduced after cooling and forming. After the forging is dissected, the grain structure on the surface of the forging is relatively uniform.

[0070] Example 2

[0071] This embodiment is to perform temperature supplementation on the forgings of IN718 alloy after homogenization heat treatment and blanking forging, and the length of the forgings is about 6300 mm. The specific temperature supplementation steps include:

[0072] S1: Operate the overhead crane to transport the forgings to the operating range of the hydraulic press, and place a temperature compensation device every 2100mm between the hydraulic press and the operator, with a total of 3 temperature compensation devices. The operator clamps the forgings through the annular mounting frame 1 and transports them to the appropriate position of the anvil, then adjusts the position of each temperature compensation device and fixes it with a counterweight.

[0073] S2: Start the temperature compensation device, and adjust the size of the annular mounting frame 1 through the size adjustment unit 4 to make it more suitable for the forging. Start the hydraulic press, stretch it according to the program settings, and record the forging parameters during the forging process to observe the surface cracking.

[0074] In this embodiment, the forging and drawing process takes a short time, and the surface quality of the forging is as follows: Figure 6 As shown in the figure, the number of surface cracks is significantly reduced after cooling and forming. After the forging is dissected, the grain structure on the surface of the forging is relatively uniform.

[0075] Comparative Example

[0076] This embodiment is to perform temperature supplementation on the forgings of IN706 alloy after homogenization heat treatment and blank forging, and the length of the forgings is about 3200 mm. The specific temperature supplementation steps include:

[0077] S1: Operate the overhead crane to transport the forging to the operating range of the hydraulic press. The operator clamps the forging and transports it to the appropriate position on the anvil for drawing. No temperature compensation device is set.

[0078] S2: Start the hydraulic press, stretch according to the program settings, record the forging parameters during the forging process, and observe the surface cracking.

[0079] Compared with Example 1, the forging deformation in this comparative example is small, the hydraulic press pressure value is large, the deformation resistance of the forging is large, and the forging elongation process takes a long time. Figure 7 As shown in the figure, there are many cracks on the surface of the forging after cooling and forming. After dissection, it is found that there are serious mixed crystals on the surface of the forging.

[0080] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A temperature compensation device, characterized in that: It comprises an annular mounting frame (1), a mobile control unit (2) and a temperature compensation component (3); The mobile control unit (2) comprises a first guide rail (21), a first contact sensor (22), a second contact sensor (23) and a contact sensing controller (24); the first guide rail (21) is arranged on the annular mounting frame (1) along the circumference of the annular mounting frame (1); the temperature compensation component (3) is slidably arranged on the first guide rail (21); and the temperature compensation component (3) is used to spray flames or high-temperature gases along the radial direction of the annular mounting frame (1) toward the central axis; The first contact sensor (22) is arranged at two ends of the first guide rail (21), the second contact sensor (23) is connected to the temperature compensation component (3), and the first contact sensor (22) and the second contact sensor (23) are respectively electrically connected to the contact sensing controller (24); The second contact sensor (23) and the first contact sensor (22) are used for contact sensing and feeding back the contact sensing signal to a contact sensing controller (24); the contact sensing controller (24) is used for changing the movement direction of the temperature compensation component (3) according to the contact sensing signal so that the temperature compensation component (3) reciprocates between the two first contact sensors (22).

2. The temperature compensation device according to claim 1, characterized in that: The number of the mobile control units (2) and the temperature compensation components (3) are respectively multiple and one-to-one corresponding, and the multiple pairs of the mobile control units (2) and the temperature compensation components (3) are distributed at intervals along the circumference of the annular mounting frame (1).

3. The temperature compensation device according to claim 1, characterized in that: The first guide rail (21) is detachably connected to the annular mounting frame (1).

4. The temperature compensation device according to claim 1, characterized in that: The mobile control unit (2) further comprises a connecting portion (26), one end of which is detachably connected to the annular mounting frame (1), and the other end of which is connected to the first guide rail (21).

5. The temperature compensation device according to claim 1, characterized in that: It also comprises a size adjustment unit (4), wherein the size adjustment unit (4) is arranged on the annular mounting frame (1), and the size adjustment unit (4) is used to adjust the size of the annular mounting frame (1).

6. The temperature compensation device according to claim 5, characterized in that: The material of the annular mounting frame (1) is a flexible material, the annular mounting frame (1) is a non-closed annular shape and comprises a first end (11) and a second end (12); The size adjustment unit (4) comprises a distance sensor (41) and a size adjustment controller (42), wherein the distance sensor (41) and the size adjustment controller (42) are electrically connected, wherein the distance sensor (41) is arranged on the annular mounting frame (1) and is used to detect the radial distance between the annular mounting frame (1) and the forging, and the size adjustment controller (42) is used to control the first end (11) and the second end (12) to move closer to or farther from each other according to the detected value of the radial distance, so as to cause the annular mounting frame (1) to contract or expand.

7. The temperature compensation device according to claim 6, characterized in that: It also comprises a support seat (5), on which a second guide rail (51) is provided, and the first end (11) and / or the second end (12) of the annular mounting frame (1) can slide along the second guide rail (51).

8. The temperature compensation device according to claim 6, characterized in that: The temperature compensation component (3) is a flame spray gun.

9. The temperature compensation device according to claim 8, characterized in that: The temperature compensation device further comprises a gas regulating unit (7), the gas regulating unit (7) comprising a first temperature sensor (71), a second temperature sensor (72) and a gas flow controller (73), the first temperature sensor (71) being used to detect the temperature of the ignition point of the flame spray gun, and the second temperature sensor (72) being used to detect the temperature of the forging; The gas flow controller (73) is used to control the gas flow entering the flame spray gun according to the temperature of the ignition point of the flame spray gun, the temperature of the forging and the detected value of the radial distance.

10. A temperature compensation control method, characterized in that: The temperature compensation control method is based on the temperature compensation device according to any one of claims 1 to 9, and the temperature compensation control method comprises: respectively obtaining the temperature value of the ignition point and the temperature value of the forging surface, as well as the detection value of the radial distance between the annular mounting frame (1) and the forging surface; Obtaining a gas flow value based on the temperature value of the ignition point, the temperature value of the forging surface and the detection value of the radial distance; The gas flow rate is calculated according to formula (I): In formula (I), Q is the gas flow value, T1 is the temperature value of the ignition point, T2 is the temperature value of the forging surface, d is the nozzle diameter of the temperature compensation component (3), L is the detection value of the radial distance between the annular mounting frame (1) and the forging surface, and k is the thermal conductivity of air.

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