Heat treatment process and device for aviation high-strength steel

Abstract

The invention discloses a heat treatment process for aviation high-strength steel, and through the treatment process, the tempering speed can be increased on the basis of ensuring the quality of a final finished product. The aviation high-strength steel heat treatment device comprises a device body, the device body is composed of a shell, a base and a water tank, the shell is located at the upper end of the base and fixedly connected with the base, the water tank is located on one side of the base and fixedly connected with the base, and two operation openings are symmetrically formed in the side, away from the water tank, of the shell. A U-shaped induction coil is fixedly connected to the side wall of the shell and used for conducting induction heating on the annular high-strength steel so as to reach the temperature needed by quenching. When the device is used, after tempering operation is completed, the annular high-strength steel can be cleaned and dried, and follow-up machining treatment can be directly carried out conveniently.

Description

Technical Field

[0001] The present invention relates to the field of heat treatment of high-strength steel, and in particular to a heat treatment process and device for aviation high-strength steel. Background Art

[0002] At present, high-strength steel is generally used as raw material in aviation parts. Ring-shaped high-strength steel is widely used in the production of aviation parts. In its actual use, in order to improve the quality of ring-shaped high-strength steel, it is necessary to heat treat the ring-shaped high-strength steel. The traditional heat treatment operation process still has the following problems: In the current heat treatment process of annular high-strength steel, quenching operation is generally carried out directly. However, simple quenching operation can easily lead to greater brittleness of the finished product, resulting in a relatively short service life, so tempering operation is added. In the prior art, when cooling down during the tempering operation, there are generally two methods: natural cooling and oil cooling. Although the former can achieve slow cooling, the cooling speed is extremely slow, and although the latter has a fast cooling speed, due to the large temperature difference between the initially high-temperature steel and the oil, the large temperature difference can easily cause cracking of the steel, so it is necessary to consider how to solve this problem. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings existing in the prior art, and to propose a heat treatment device for aviation high-strength steel. When in use, the device optimizes the tempering operation process, improves the tempering speed while ensuring the tempering effect, and after the tempering operation is completed, the annular high-strength steel will be cleaned and dried, which is convenient for direct subsequent processing.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A heat treatment process for aviation high-strength steel, comprising the following steps: The first step: select high-quality high-strength steel electroslag ingots or consumable ingots as the starting raw materials, and then, through the billet forging process, gradually deform the original cast structure and optimize its internal structure until the desired ring shape is achieved to obtain a ring-shaped high-strength steel component; Step 2: Heat the annular high-strength steel component to 850-870°C, then place it in a quenching device for liquid cooling to complete quenching; Step 3: preheat the three groups of oil in the heat treatment device, the temperature ranges of the three groups of oil are 495℃-505℃, 245℃-255℃ and 25℃-35℃ respectively; Step 4: Place the quenched annular high-strength steel component into a heat treatment device for tempering operation; Step 5: Take out the annular high-strength steel component after the tempering operation.

[0005] The present invention also discloses a heat treatment device for aviation high-strength steel, which adopts the above-mentioned treatment process and includes a device body, wherein the device body is composed of a shell, a base and a water tank, wherein the shell is located at the upper end of the base and is fixedly connected, and the water tank is located at one side of the base and is fixedly connected, and two operation ports are symmetrically opened on the side of the shell away from the water tank, and a U-shaped induction coil is fixedly connected to the inner side wall of the shell, and the U-shaped induction coil is used for induction heating the annular high-strength steel to reach the temperature required for quenching; an annular high-strength steel placement module, and the annular high-strength steel placement module is used for hanging the annular high-strength steel to facilitate heating treatment and oil quenching treatment. The annular high-strength steel placement module includes a connecting block, the side wall of the connecting block is fixedly connected to a U-shaped plate, a transmission is installed on the upper end of the horizontal part of the U-shaped plate, the output shaft of the transmission is fixedly connected to a rectangular bar, the four sides of the rectangular bar are fixedly connected to L-shaped plates, each of the vertical parts of the L-shaped plates is penetrated by a rotating shaft, and each of the rotating shafts is provided with an annular hanging groove; an oil-immersed module, the oil-immersed module includes four slots opened at the upper end of the base, the three slots close to the U-shaped induction coil are filled with heat treatment oil, and the temperature of the heat treatment oil in the three slots decreases successively in the direction away from the U-shaped induction coil, thereby improving the effect of oil quenching.

[0006] Preferably, it also includes a moving module, which moves the moving module and the oil immersion module to jointly realize oil immersion processing, and the moving module includes a driving motor installed on the side wall of the shell, the output shaft of the driving motor extends to the inside of the shell and is fixedly connected to a threaded rod, the threaded rod is threadedly connected to a slider, a guide rod is fixedly connected between the left and right inner walls of the shell, the guide rod passes through the slider and is slidably connected, a return slide is penetrated by the slider, the lower end of the upper horizontal part of the return slide is fixedly connected to a connecting plate, the lower end of the connecting plate is elastically connected to the upper end of the slider by a second spring, the lower end of the return slide is fixedly connected to the upper end of the connecting block, the inner top of the shell is fixedly connected to an electric telescopic rod, the telescopic end of the electric telescopic rod is fixedly connected to a hollow bar, the lower end of the hollow bar is fixedly connected to four trapezoidal plates, and the upper end of the return slide is fixedly connected to a guide wheel.

[0007] Preferably, three temperature regulating modules are also included, each of which is used to ensure that the oil temperature in the corresponding tank body is uniform, the temperature regulating module includes a heating plate fixedly connected to the bottom of the tank body, a temperature sensor is installed on the inner wall of the tank body, a semiconductor refrigeration component is installed on the side of the shell away from the water tank, and the refrigeration end of the semiconductor refrigeration component extends into the interior of the tank body.

[0008] Preferably, it also includes an auxiliary processing module, which includes a toothed plate fixedly connected to the inner wall of a plurality of troughs close to one side of the water tank, the input shaft of the transmission passes through the lower horizontal portion of the U-shaped plate, and is fixedly connected to a transmission gear, the transmission gear cooperates with the plurality of toothed plates, each of the rotating shafts is fixedly connected to a second bevel gear at one end away from the corresponding rectangular bar, the lower end of the connecting block is fixedly connected to a hollow tube, the outer side of the hollow tube is fixedly connected to a first bevel gear, and the first bevel gear is meshed with a plurality of second bevel gears.

[0009] Preferably, one end of the threaded rod away from the driving motor extends to the outside and a rotating disk is installed through a one-way bearing, the side of the shell away from the driving motor is fixedly connected to the second piston cylinder, and a second piston plate that can slide up and down is arranged in the second piston cylinder, the rotating disk is rotatably connected to a connecting strip at an eccentric point on the side away from the threaded rod, the other end of the connecting strip is rotatably connected to the lower end of the second piston plate, and a filter box is fixedly connected to the side of the shell away from the operating port, the inner top space of the second piston cylinder is connected to the space on the side of the filter box away from the driving motor through a third one-way tube, the space on the side of the filter box away from the third one-way tube is connected to the hollow bar through an air inlet pipe, a plurality of air inlet holes are provided on the inner bottom of the hollow bar, and the inner top space of the second piston cylinder is connected to the inside of the water tank through the second one-way tube.

[0010] Preferably, a first piston cylinder is fixedly connected to the upper end of the shell, the inner top space of the first piston cylinder is connected to the outside through a conducting port, a first piston plate that can slide up and down is arranged in the first piston cylinder, and the upper end of the first piston plate is elastically connected to the inner top of the first piston cylinder through a first spring.

[0011] Preferably, the inner top space of the second piston cylinder is connected with the inner bottom space of the first piston cylinder through a first one-way tube, a U-shaped hollow plate is fixedly connected to the inner wall of the shell away from the U-shaped induction coil, a plurality of nozzles are provided on the inner side wall of the U-shaped hollow plate, and the inner bottom space of the first piston cylinder is connected with the inside of the U-shaped hollow plate through a discharge pipe.

[0012] Preferably, one-way valves are installed in the first one-way tube, the second one-way tube and the third one-way tube. The one-way valve inside the second one-way tube flows from the bottom of the water tank to the top space in the second piston cylinder in one direction. The one-way valve inside the third one-way tube flows from the filter box to the top space in the second piston cylinder in one direction. The one-way valve inside the first one-way tube flows from the top space in the second piston cylinder to the internal space of the first piston cylinder in one direction.

[0013] Preferably, a normally open solenoid valve is installed inside the discharge pipe, and the normally open solenoid valve opens and closes synchronously with the drive motor.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By optimizing the actual process through the operation process of quenching and then tempering, and slowly cooling during the tempering process, the actual high-strength steel can be made more tough and ductile, and the service life and reliability of the steel can be improved.

[0015] 2. There are multiple oil tanks with different temperatures. When performing tempering operations, you only need to start the drive motor. With the cooperation of the guide wheel, the second spring, and the annular high-strength steel placement module and other structures, the annular high-strength steel can be passed through multiple oils of different temperatures in turn for slow cooling to achieve the purpose of tempering. This process is a continuous process and does not require multiple transfers by staff, which facilitates actual operations.

[0016] 3. During the horizontal movement of the annular high-strength steel in the oil, multiple annular high-strength steels rotate around the transmission output shaft and the rotating shaft while moving in the oil. During this process, the relative movement between the annular high-strength steel and the oil is more comprehensive, and the rotation of the rotating shaft can cause the contact surface between the annular high-strength steel and the oil to change continuously, allowing the annular high-strength steel to fully contact the oil, achieving more comprehensive and efficient cooling treatment.

[0017] 4. Each time the module is moved back under the action of the second spring, it will shake several times under the action of inertia and finally stop moving in the opposite direction up and down. The shaking process can shake off the oil that is easy to fall off, which not only avoids the waste of oil, but also facilitates the subsequent cleaning operation.

[0018] 5. After the annular high-strength steel enters the tank containing the cleaning agent, it can be fully contacted with the cleaning agent, thereby realizing self-cleaning operation, optimizing the actual process, and eliminating the need for subsequent separate cleaning operations.

[0019] 6. During the forward rotation of the threaded rod, the second piston plate will reciprocate up and down, and cooperate with multiple one-way valves to extract part of the gas in the shell, thereby achieving the purpose of extracting and filtering the scattered toxic smoke, reducing the environmental pollution caused by the smoke to the surrounding area, and at the same time, the gas and liquid are synchronously pressed into the inner bottom space of the first piston cylinder.

[0020] 7. During the reciprocating process of the second piston plate, the bottom space in the first piston cylinder is finally in a state of liquid at the bottom and gas at the top. When the power is off, the first piston plate moves downward, first presses out the water, then presses out the gas, and after the flushing operation, it is air-dried to ensure that the treated annular high-strength steel is dry and clean, thereby facilitating subsequent processing.

[0021] In summary, this processing technology and device make the actual high-strength steel more tough and ductile, improve the service life and reliability of the steel, and in addition, during the tempering operation, while ensuring the tempering effect, increase the tempering speed and improve the overall efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a heat treatment device for aviation high-strength steel proposed by the present invention; Figure 2 for Figure 1 Schematic diagram of the rear side; Figure 3 for Figure 1 Schematic cross-sectional view of ; Figure 4 It is a schematic diagram of the structure of the slider part, the annular high-strength steel placement module and the U-shaped induction coil; Figure 5 for Figure 4 Schematic diagram after removing the U-shaped induction coil; Figure 6 for Figure 5 A magnified view of the lower half of the Figure 7 is a cross-sectional view of the second piston cylinder; Figure 8 Bottom view of the connection between hollow bars and trapezoidal plates.

[0023] In the figure: 1 shell, 2 base, 3 semiconductor refrigeration element, 4 operation port, 5 first piston cylinder, 6 second piston cylinder, 7 first one-way pipe, 8 discharge pipe, 9 water tank, 10 second one-way pipe, 11 drive motor, 12 filter box, 13 air intake pipe, 14 third one-way pipe, 15 tank, 16 heating plate, 17 tooth plate, 18 temperature sensor, 19 slider, 20 threaded rod, 21 electric telescopic rod, 22 hollow bar, 23 trapezoidal plate, 24 first active Plug plate, 25 first spring, 26 U-shaped hollow plate, 27 nozzle, 28 air inlet, 29 U-shaped induction coil, 30 U-shaped plate, 31 circular slide bar, 32 connecting plate, 33 guide wheel, 34 second spring, 35 connecting block, 36 hollow tube, 37 transmission gear, 38 transmission, 39 rectangular bar, 40 first bevel gear, 41 L-shaped plate, 42 rotating shaft, 43 second bevel gear, 44 second piston plate, 45 connecting bar, 46 rotating disk. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] The present invention discloses a heat treatment process for aviation high-strength steel, comprising the following steps: The first step: select high-quality high-strength steel electroslag ingots or consumable ingots as the starting raw materials, and then, through the billet forging process, gradually deform the original cast structure and optimize its internal structure until the desired ring shape is achieved to obtain a ring-shaped high-strength steel component; Step 2: Heat the annular high-strength steel component to 850-870°C, then place it in a quenching device for liquid cooling to complete quenching; Step 3: preheat the three groups of oil in the heat treatment device, the temperature ranges of the three groups of oil are 495℃-505℃, 245℃-255℃ and 25℃-35℃ respectively; Step 4: Place the quenched annular high-strength steel component into a heat treatment device for tempering operation; Step 5: Take out the annular high-strength steel component after the tempering operation.

[0026] Reference Figure 1-Figure 3 The present invention also discloses a heat treatment device for aviation high-strength steel, which adopts the above-mentioned treatment process and includes a device body, which is composed of a shell 1, a base 2 and a water tank 9. The shell 1 is located at the upper end of the base 2 and is fixedly connected. The water tank 9 is located on one side of the base 2. The water tank 9 is filled with clean water and is fixedly connected. Two operation ports 4 are symmetrically opened on one side of the shell 1 away from the water tank 9. A U-shaped induction coil 29 is fixedly connected to the inner side wall of the shell 1. The U-shaped induction coil 29 is used to induction heat the annular high-strength steel to reach the temperature required for quenching.

[0027] Reference Figure 4 As an embodiment of the present invention, it also includes an annular high-strength steel placement module, which is used to hang the annular high-strength steel to facilitate heating treatment and oil quenching treatment. The annular high-strength steel placement module includes a connecting block 35, and the side wall of the connecting block 35 is fixedly connected to a U-shaped plate 30. A transmission 38 is installed on the upper end of the horizontal part of the U-shaped plate 30. The transmission 38 adopts a speed reducer, that is, the speed of the input shaft is lower than that of the output shaft. The output shaft of the transmission 38 is fixedly connected to a rectangular bar 39, and the four sides of the rectangular bar 39 are fixedly connected to L-shaped plates 41. A rotating shaft 42 is provided through the vertical part of each L-shaped plate 41, and each rotating shaft 42 is provided with an annular hanging groove.

[0028] Reference Figure 3 , Figure 8As an embodiment of the present invention, it also includes an oil-immersed module, which includes four slots 15 opened at the upper end of the base 2. The three slots 15 close to the U-shaped induction coil 29 are filled with heat-treated oil. It should be noted here that the remaining slot 15 is filled with a detergent to achieve subsequent cleaning operations. The temperature of the heat-treated oil in the three slots 15 decreases in sequence in the direction away from the U-shaped induction coil 29, thereby improving the effect of oil quenching. Furthermore, the temperature of the heat-treated oil in the first slot 15 closest to the U-shaped induction coil 29 is about 500°C, the temperature of the heat-treated oil in the second slot 15 is about 250°C, and the temperature of the heat-treated oil in the third slot 15 is about 30°C.

[0029] As an embodiment of the present invention, it also includes a moving module, which together with the oil immersion module realizes oil immersion processing. The moving module includes a driving motor 11 installed on the side wall of the shell 1, and the output shaft of the driving motor 11 extends into the interior of the shell 1 and is fixedly connected to a threaded rod 20, on which a slider 19 is threadedly connected, and a guide rod is fixedly connected between the left and right inner walls of the shell 1, and the guide rod passes through the slider 19 and is slidably connected, and a return slide 31 is penetrated through the slider 19, and a connecting plate 32 is fixedly connected to the lower end of the upper horizontal part of the return slide 31, and the lower end of the connecting plate 32 is elastically connected to the upper end of the slider 19 by a second spring 34, and the lower end of the return slide 31 is fixedly connected to the upper end of the connecting block 35, and an electric telescopic rod 21 is fixedly connected to the inner top of the shell 1, and the telescopic end of the electric telescopic rod 21 is fixedly connected to a hollow bar 22, and the lower end of the hollow bar 22 is fixedly connected to four trapezoidal plates 23, and the upper end of the return slide 31 is fixedly connected to a guide wheel 33.

[0030] As an embodiment of the present invention, it also includes three temperature adjustment modules, each of which is used to ensure that the oil temperature in the corresponding tank 15 is uniform. The temperature adjustment module includes a heating plate 16 fixedly connected to the bottom of the tank 15. The heating plate 16 is electrically heated. This is a prior art. A temperature sensor 18 is installed on the inner wall of the tank 15. A semiconductor refrigeration element 3 is installed on the side of the shell 1 away from the water tank 9. The semiconductor refrigeration element 3 is composed of a semiconductor refrigeration plate and a heat dissipation fan, which can ensure a good refrigeration effect. Further, the semiconductor refrigeration element 3 here can be replaced with other heat exchange elements. The cooling end of the semiconductor refrigeration element 3 extends to the tank 15, further, when the temperature of the heat-treated oil in the tank body 15 closest to the U-shaped induction coil 29 is lower than 495°C, the heating plate 16 is started to heat it. After the temperature reaches 500°C, the heating plate 16 is turned off. When the temperature of the heat-treated oil in the tank body 15 is higher than 505°C, the semiconductor refrigeration component 3 is started. When the temperature reaches 500°C, the semiconductor refrigeration component 3 is turned off, thereby ensuring that the internal temperature is controlled within the required range (the tank body 15 closest to the U-shaped induction coil 29 is controlled at 495°C-505°C, the second tank body 15 is controlled at 245°C-255°C, and the third tank body 15 is controlled at 25°C-35°C).

[0031] Reference Figure 3 , Figure 4 , Figure 5 , Figure 6 As an embodiment of the present invention, it also includes an auxiliary processing module, which includes a toothed plate 17 fixedly connected to the inner wall of one side of the multiple trough bodies 15 close to the water tank 9. The input shaft of the transmission 38 passes through the lower horizontal part of the U-shaped plate 30 and is fixedly connected to a transmission gear 37. The transmission gear 37 cooperates with the multiple toothed plates 17. The end of each rotating shaft 42 away from the corresponding rectangular bar 39 is fixedly connected to a second bevel gear 43. The lower end of the connecting block 35 is fixedly connected to a hollow tube 36, and the outer side of the hollow tube 36 is fixedly connected to a first bevel gear 40. The first bevel gear 40 is meshed with multiple second bevel gears 43. Furthermore, the above-mentioned auxiliary processing module and the structure in the annular high-strength steel placement module are all made of tungsten-containing alloy, which has a high melting point and will not be affected by high temperatures of six or seven hundred degrees and its own characteristics.

[0032] Reference Figure 2 , Figure 3 , Figure 7As an embodiment of the present invention, one end of the threaded rod 20 away from the driving motor 11 extends to the outside, and a rotating disk 46 is installed through a one-way bearing. When the threaded rod 20 rotates in the forward direction, the rotating disk 46 can be driven to rotate. When the threaded rod 20 rotates in the reverse direction, the rotating disk 46 will not be driven to rotate. The second piston cylinder 6 is fixedly connected to the side of the shell 1 away from the driving motor 11, and a second piston plate 44 that can slide up and down is arranged in the second piston cylinder 6. A connecting strip 45 is rotatably connected to the eccentric part of the side of the rotating disk 46 away from the threaded rod 20, and the other end of the connecting strip 45 is rotatably connected to the lower end of the second piston plate 44. A filter box 12 is fixedly connected to the side of the shell 1 away from the operating port 4, and a filter element is installed inside the filter box 12 to filter smoke. The inner top space of the second piston cylinder 6 is connected to the space on the side of the filter box 12 away from the driving motor 11 through a third one-way tube 14. The space on one side away from the third one-way tube 14 is connected with the hollow bar 22 through the air inlet pipe 13, and a plurality of air inlet holes 28 are provided at the inner bottom of the hollow bar 22. The inner top space of the second piston cylinder 6 is connected with the inside of the water tank 9 through the second one-way tube 10. The upper end of the shell 1 is fixedly connected with the first piston cylinder 5, and the inner top space of the first piston cylinder 5 is connected with the outside through the conducting port. A first piston plate 24 which can slide up and down is arranged in the first piston cylinder 5, and the upper end of the first piston plate 24 is elastically connected with the inner top of the first piston cylinder 5 through the first spring 25. The inner top space of the second piston cylinder 6 is connected with the inner bottom space of the first piston cylinder 5 through the first one-way tube 7. A U-shaped hollow plate 26 is fixedly connected to the inner wall of the shell 1 away from the U-shaped induction coil 29, and a plurality of nozzles 27 are provided on the inner side wall of the U-shaped hollow plate 26. The inner bottom space of the first piston cylinder 5 is connected with the inside of the U-shaped hollow plate 26 through the discharge pipe 8.

[0033] As an embodiment of the present invention, one-way valves are installed in the first one-way tube 7, the second one-way tube 10 and the third one-way tube 14. The one-way valve inside the second one-way tube 10 flows from the bottom of the water tank 9 to the top space of the second piston cylinder 6 in one direction. The one-way valve inside the third one-way tube 14 flows from the filter box 12 to the top space of the second piston cylinder 6 in one direction. The one-way valve inside the first one-way tube 7 flows from the top space of the second piston cylinder 6 to the internal space of the first piston cylinder 5 in one direction. A normally open solenoid valve is installed inside the discharge pipe 8. The normally open solenoid valve is opened and closed synchronously with the drive motor 11. The normally open solenoid valve is in a sealed state when power is on, and is in a conducting state when power is off.

[0034] In the present invention, when it is used, the annular high-strength steel that has been quenched is hung from the operating port 4 close to the U-shaped induction coil 29 on the annular hanging groove of multiple rotating shafts 42, and then the U-shaped induction coil 29 is started to heat the annular high-strength steel. The specific heating time is designed according to actual needs to ensure that the temperature of the heated annular high-strength steel reaches 700°C and lasts for a period of time. Then, the drive motor 11 is started to rotate forward. The rotation of the drive motor 11 will drive the slider 19 to move to the side away from the drive motor 11. When the slider 19 moves, it will drive the guide wheel 33 to move through the return slide bar 31. When the guide wheel 33 contacts the inclined surface of the trapezoidal plate 23, it will be pushed down and compress the second Spring 34, thereby utilizing the return slide 31 to drive the annular high-strength steel placement module to partially move downward until the placement module is completely in the oil of the trough body 15, and when the guide wheel 33 passes through the lower horizontal part of the trapezoidal plate 23, the return slide 31 and the placement module will move horizontally, and when the guide wheel 33 moves to the side of the trapezoidal plate 23 away from the drive motor 11, under the elastic action of the second spring 34, the return slide 31 and the placement module will move up quickly. In this way, during the movement, the placement module will pass through multiple oils with different temperatures to achieve slow heat exchange and cooling to achieve the purpose of tempering. By adopting this operation, compared with the existing technology, the tempering speed is improved while ensuring the quality of the finished product.

[0035] In the above-mentioned horizontal movement process in the oil, the transmission gear 37 will move relative to the corresponding tooth plate 17, and it will rotate during the movement. The transmission 38 can be used to rotate the rectangular bar 39, and the rotation of the rectangular bar 39 will drive the multiple L-shaped plates 41 to rotate, so that the rotating shaft 42 rotates with the output shaft of the transmission 38 as the axis. Since the multiple second bevel gears 43 are all meshed with the first bevel gear 40, the rotation will cause the bevel gears to move relative to each other, so that the multiple second bevel gears 43 rotate and drive the rotating shaft 42 to rotate. In this process, multiple annular high-strength steels can be moved in the oil away from the drive motor 11 while rotating with the output shaft of the transmission 38 as the axis, and then rotating with the rotating shaft 42 as the axis. In this process, the annular high-strength steel and the oil have a more comprehensive relative movement, and the rotation of the rotating shaft 42 can make the contact surface between the annular high-strength steel and it change continuously, so that the annular high-strength steel can fully contact the oil, and achieve a more comprehensive and efficient cooling treatment.

[0036] Furthermore, after the annular high-strength steel enters the tank 15 containing the cleaning agent, it can be in full contact with the cleaning agent, thereby realizing a self-cleaning operation, until the slider 19 moves to the end of the threaded rod 20 away from the drive motor 11, and finally returns to the initial height under the elastic action of the second spring 34; In addition, it is worth mentioning that each time the placement module moves back under the action of the second spring 34, it will shake multiple times under the action of inertia and eventually stop moving in the up and down opposite directions. This shaking process can shake off the easily detached oil adhering to it, which not only avoids the waste of oil, but also facilitates subsequent cleaning operations.

[0037] It should be noted that the positive rotation of the threaded rod 20 will also drive the rotating disk 46 to rotate. The connecting strip 45 can be used to realize the up and down reciprocating motion of the second piston plate 44. In cooperation with the first one-way tube 7, the second one-way tube 10, the third one-way tube 14 and the internal one-way valve, the second piston plate 44 moves downward, which will generate a one-way gas flow inside the shell 1, the hollow bar 22, the filter box 12 and the top of the second piston cylinder 6, and at the same time, it will generate a one-way liquid flow from the water tank 9 to the top of the second piston cylinder 6. When the second piston plate 44 moves upward, the water and gas will be pressed into the bottom space of the first piston cylinder 5 at the same time, and the first piston plate 24 will be pushed upward to compress the first spring 25 (at this time, the normally open solenoid valve in the discharge pipe 8 is energized and closed). That is, during the positive rotation of the threaded rod 20, part of the gas in the shell 1 will be extracted, thereby achieving the purpose of extracting and filtering the scattered toxic smoke, and at the same time, the gas and liquid will be synchronously pressed into the inner bottom space of the first piston cylinder 5.

[0038] Finally, the bottom space in the first piston cylinder 5 is in a state of liquid at the bottom and gas at the top. When the slider 19 moves to a position where the threaded rod 20 is away from one end of the drive motor 11, the drive motor 11 is turned off at this time. After the drive motor 11 is turned off, the normally open solenoid valve is de-energized and turned on. Under the elastic action of the first spring 25, the first piston plate 24 moves downward, first pressing out the water and then pressing out the gas. During the process of pressing out the water, the water is sprayed out from the nozzle 27 onto multiple annular high-strength steels that have been cleaned with cleaning agents, flushing off the residual cleaning agents thereon. After the gas is sprayed out, an air-drying effect can be achieved, ensuring that the treated annular high-strength steel is dry and clean, thereby facilitating subsequent processing.

[0039] After the overall operation is completed, the annular high-strength steel is removed from the other operation port 4, and the drive motor 11 is started to rotate in the reverse direction. Further, it can be controlled by PLC, and each time the drive motor 11 is powered off, the electric telescopic rod 21 will be started to retract or extend once, that is, the drive motor 11 moves the slider 19 to the end of the threaded rod 20 away from the drive motor 11. After the power is cut off, the electric telescopic rod 21 will be powered on and retracted, so that the hollow bar 22 drives the multiple trapezoidal plates 23 to move up, and the drive motor 11 reverses and moves the slider 19 back to the initial position, and the electric telescopic rod 21 will be powered on and extended to Figure 3 state, and repeat the process.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heat treatment process for aviation high-strength steel, characterized in that: The following steps are involved: The first step: select high-quality high-strength steel electroslag ingots or consumable ingots as the starting raw materials, and then, through the billet forging process, gradually deform the original cast structure and optimize its internal structure until the desired ring shape is achieved to obtain a ring-shaped high-strength steel component; Step 2: Heat the annular high-strength steel component to 850-870°C, then place it in a quenching device for liquid cooling to complete quenching; Step 3: preheat the three groups of oil in the heat treatment device, the temperature ranges of the three groups of oil are 495℃-505℃, 245℃-255℃ and 25℃-35℃ respectively; Step 4: Place the quenched annular high-strength steel component into a heat treatment device for tempering operation; Step 5: Take out the annular high-strength steel component after the tempering operation.

2. A heat treatment process for aviation high-strength steel according to claim 1, characterized in that: The annular high-strength steel element is heated to a temperature of 860°C.

3. The heat treatment process for aviation high-strength steel according to claim 1, characterized in that: The three groups of oil temperatures in the heat treatment device are 500°C, 250°C and 30°C respectively.

4. A heat treatment device for aviation high-strength steel, using the treatment process as claimed in claim 1, characterized in that: include: A device body, the device body comprising a shell (1), a base (2) and a water tank (9), the shell (1) being located at the upper end of the base (2) and being fixedly connected, the water tank (9) being located at one side of the base (2) and being fixedly connected, two operation ports (4) being symmetrically provided on a side of the shell (1) away from the water tank (9), a U-shaped induction coil (29) being fixedly connected to the inner side wall of the shell (1), the U-shaped induction coil (29) being used for induction heating the annular high-strength steel to reach a temperature required for quenching; An annular high-strength steel placement module, the annular high-strength steel placement module is used to hang the annular high-strength steel to facilitate heating treatment and oil quenching treatment, the annular high-strength steel placement module comprises a connecting block (35), the side wall of the connecting block (35) is fixedly connected to a U-shaped plate (30), a transmission (38) is installed on the upper end of the horizontal part of the U-shaped plate (30), the output shaft of the transmission (38) is fixedly connected to a rectangular bar (39), the four sides of the rectangular bar (39) are fixedly connected to L-shaped plates (41), the vertical part of each L-shaped plate (41) is penetrated by a rotating shaft (42), and each rotating shaft (42) is provided with an annular hanging groove; An oil-immersed module, the oil-immersed module comprising four troughs (15) opened at the upper end of a base (2), three of the troughs (15) close to the U-shaped induction coil (29) each containing heat treatment oil, the temperature of the heat treatment oil in the three troughs (15) decreasing in a direction away from the U-shaped induction coil (29), thereby improving the effect of oil quenching.

5. The heat treatment device for aviation high-strength steel according to claim 4, characterized in that: The invention also comprises a moving module, wherein the moving module and the oil immersion module realize oil immersion processing together, wherein the moving module comprises a driving motor (11) mounted on the side wall of the housing (1), wherein the output shaft of the driving motor (11) extends into the interior of the housing (1) and is fixedly connected to a threaded rod (20), wherein a slider (19) is threadedly connected to the threaded rod (20), wherein a guide rod is fixedly connected between the inner walls on the left and right sides of the housing (1), wherein the guide rod passes through the slider (19) and is slidably connected thereto, wherein a circular slide bar (31) is provided on the slider (19), wherein the circular slide bar (31) is fixedly connected to the inner walls on the left and right sides of the housing (1), wherein the guide rod passes through the slider (19) and is slidably connected thereto, wherein a circular slide bar (31) is provided on the slider (19), wherein the circular slide bar (31) is fixedly connected to the inner walls on the left and right sides of the housing (1), wherein the guide rod passes through the slider (19) and is slidably connected thereto, wherein the circular slide bar (31) is fixedly connected to the inner walls on the left and right sides of the housing (1), wherein the guide rod passes through the slider (19), and ... ) is fixedly connected to a connecting plate (32) at the lower end of the upper horizontal part, the lower end of the connecting plate (32) is elastically connected to the upper end of the slider (19) via a second spring (34), the lower end of the return slide bar (31) is fixedly connected to the upper end of the connecting block (35), the inner top of the shell (1) is fixedly connected to an electric telescopic rod (21), the telescopic end of the electric telescopic rod (21) is fixedly connected to a hollow bar (22), the lower end of the hollow bar (22) is fixedly connected to four trapezoidal plates (23), and the upper end of the return slide bar (31) is fixedly connected to a guide wheel (33).

6. The heat treatment device for aviation high-strength steel according to claim 4, characterized in that: It also includes three temperature regulating modules, each of which is used to ensure that the oil temperature in the corresponding tank (15) is uniform. The temperature regulating module includes a heating plate (16) fixedly connected to the bottom of the tank (15), and a temperature sensor (18) is installed on the inner wall of the tank (15). A semiconductor refrigeration element (3) is installed on the side of the shell (1) away from the water tank (9), and the refrigeration end of the semiconductor refrigeration element (3) extends into the tank (15).

7. The heat treatment device for aviation high-strength steel according to claim 5, characterized in that: The invention also comprises an auxiliary processing module, the auxiliary processing module comprising a toothed plate (17) fixedly connected to the inner wall of a side of the plurality of trough bodies (15) close to the water tank (9); the input shaft of the transmission (38) passes through the lower horizontal portion of the U-shaped plate (30) and is fixedly connected to a transmission gear (37); the transmission gear (37) cooperates with the plurality of toothed plates (17); one end of each rotating shaft (42) away from the corresponding rectangular bar (39) is fixedly connected to a second bevel gear (43); the lower end of the connecting block (35) is fixedly connected to a hollow tube (36); the outer side of the hollow tube (36) is fixedly connected to a first bevel gear (40); the first bevel gear (40) meshes with the plurality of second bevel gears (43).

8. The heat treatment device for aviation high-strength steel according to claim 5, characterized in that: One end of the threaded rod (20) away from the drive motor (11) extends to the outside and is provided with a rotating disk (46) via a one-way bearing; a second piston cylinder (6) is fixedly connected to a side of the housing (1) away from the drive motor (11); a second piston plate (44) that can slide up and down is arranged in the second piston cylinder (6); a connecting strip (45) is rotatably connected to an eccentric position of a side of the rotating disk (46) away from the threaded rod (20); the other end of the connecting strip (45) is rotatably connected to the lower end of the second piston plate (44); a filter box (12) is fixedly connected to a side of the housing (1) away from the operating port (4); the inner top space of the second piston cylinder (6) is connected to a side of the filter box (12) away from the drive motor (11). The space is connected via a third one-way tube (14); the space on one side of the filter box (12) away from the third one-way tube (14) is connected to the hollow bar (22) via an air inlet tube (13); a plurality of air inlet holes (28) are provided at the inner bottom of the hollow bar (22); the inner top space of the second piston cylinder (6) is connected to the inside of the water tank (9) via a second one-way tube (10); the upper end of the housing (1) is fixedly connected to a first piston cylinder (5); the inner top space of the first piston cylinder (5) is connected to the outside via a conducting port; a first piston plate (24) that can slide up and down is provided in the first piston cylinder (5); the upper end of the first piston plate (24) is elastically connected to the inner top of the first piston cylinder (5) via a first spring (25).

9. The heat treatment device for aviation high-strength steel according to claim 8, characterized in that: The inner top space of the second piston cylinder (6) is connected to the inner bottom space of the first piston cylinder (5) via a first one-way tube (7); a U-shaped hollow plate (26) is fixedly connected to the inner wall of the housing (1) away from the U-shaped induction coil (29); a plurality of nozzles (27) are provided on the inner side wall of the U-shaped hollow plate (26); the inner bottom space of the first piston cylinder (5) is connected to the inside of the U-shaped hollow plate (26) via a discharge pipe (8); a normally open solenoid valve is installed inside the discharge pipe (8); the normally open solenoid valve opens and closes synchronously with the drive motor (11).

10. The heat treatment device for aviation high-strength steel according to claim 9, characterized in that: One-way valves are installed in the first one-way tube (7), the second one-way tube (10) and the third one-way tube (14); the one-way valve in the second one-way tube (10) flows from the bottom of the water tank (9) to the top space in the second piston cylinder (6); the one-way valve in the third one-way tube (14) flows from the filter box (12) to the top space in the second piston cylinder (6); and the one-way valve in the first one-way tube (7) flows from the top space in the second piston cylinder (6) to the internal space of the first piston cylinder (5).

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