Heat treatment system, heat treatment method and readable storage medium

Abstract

The present application belongs to the technical field of heat treatment, and discloses a heat treatment system, a heat treatment method, and a readable storage medium. The heat treatment system comprises: a quenching apparatus; a heating apparatus, used to heat a workpiece, the heating apparatus being internally provided with a temperature detector and a heating element, the heating element being used to heat the workpiece, and the temperature detector being used for temperature detection; a transfer apparatus, used to transfer the workpiece to the quenching apparatus; and a heat treatment controller, used to adjust a heating mode and control the operation of the transfer apparatus. The heat treatment method comprises: heating a workpiece at a first heating rate, detecting an actual temperature Ti of the workpiece and comparing it with a lower limit Tmin of a suppression temperature range, executing a corresponding heating mode, and, when Ti equals T, taking out the workpiece and performing quenching. The readable storage medium stores a computer program that executes the described method. The present application ensures that a heating temperature reaches a preheating temperature before proceeding to a next process, achieving effective temperature control in heat treatment, which can increase temperature reliability, thereby increasing workpiece processing quality.

Description

A heat treatment system, a heat treatment method, and a readable storage medium Technical Field

[0001] This application belongs to the field of heat treatment technology, and in particular relates to a heat treatment system, a heat treatment method, and a readable storage medium. Background Technology

[0002] Heat treatment is a process in which a solid workpiece is placed in a certain medium and heated to a suitable temperature, held at that temperature for a certain time, and then cooled at different rates. By changing the microstructure of the workpiece material surface or internally, its properties can be controlled.

[0003] Laboratory heat treatment equipment is one of the most important pieces of equipment for the development of new materials and processes, and its performance has a significant impact on the characterization of material properties. In the process of developing new materials and processes, numerous comparative experiments are often required to obtain effective data, which places high demands on the heat treatment equipment.

[0004] Currently, in terms of automatic control and matching of heating programs in laboratory heat treatment systems, time-cycle control is the main approach. However, there are still technical challenges in accurately controlling process time cycles, temperatures, and signal interaction. As a result, the process often proceeds directly to the next step before the required temperature is reached, leaving the workpiece outside the effective heating range. This affects the heat treatment effect of the workpiece and damages its quality. Summary of the Invention

[0005] This application aims to at least partially solve the technical problem of workpiece temperature not reaching the required level during the process. To this end, this application provides a heat treatment system, heat treatment method, and readable storage medium to ensure that the heating temperature reaches the preheating temperature before proceeding to the next process, thereby achieving effective heat treatment temperature control, improving temperature reliability, and thus improving workpiece processing quality.

[0006] In a first aspect, embodiments of this application provide a heat treatment system, comprising:

[0007] Quenching equipment is used to quench heated workpieces;

[0008] A heating device is used to heat the workpiece. The heating device is separated from the quenching device. The heating device is equipped with a temperature detector and a heating element. The heating element is used to heat the workpiece, and the temperature detector is used to detect the temperature of the workpiece.

[0009] The transfer device is used to transfer the workpiece from the heating device to the quenching device after the detected workpiece temperature reaches the set preheating temperature.

[0010] The heat treatment controller is electrically connected with the temperature detector, receives the workpiece temperature fed back by the temperature detector, adjusts the heating mode of the heating member, and controls the action of the transfer device.

[0011] In an optional embodiment, when the heating mode of the heating member is adjusted:

[0012] The heating member is controlled to enter a preheating working section and start timing, and the workpiece is heated.

[0013] The actual temperature T of the workpiece after reaching the set preheating time t0 is detected. i The actual temperature Ti is compared with the lower limit value T of the set inhibition temperature range. min If T i is less than T min , the heating member is controlled to continue heating; if T i is greater than or equal to T min , the heating member is controlled by the heat treatment controller to enter a holding working section and heat the workpiece in the set inhibition temperature range, and the actual temperature T of the workpiece is continuously detected. i If T i is greater than or equal to the set preheating temperature T, the heating member is controlled to end heating.

[0014] In an optional embodiment, the set inhibition temperature range is [T min , T max ], the lower limit value T min of the set inhibition temperature range is T-ΔT, and the upper limit value T max of the set inhibition temperature range is T+ΔT, wherein ΔT is a set inhibition value.

[0015] In an optional embodiment, the transfer device is controlled to act, specifically including: when T i is greater than or equal to the set preheating temperature T, the heat treatment controller controls the action of the transfer device.

[0016] In an optional embodiment, the heating device includes a low-temperature heating device, a medium-temperature heating device, and a high-temperature heating device, which are respectively used to heat the workpiece to a preheating temperature T1, a preheating temperature T2, and a preheating temperature T3. The preheating temperature T1 is less than the preheating temperature T2, and the preheating temperature T2 is less than the preheating temperature T3. The low-temperature heating device, the medium-temperature heating device, and the high-temperature heating device are respectively spaced apart from the quenching device.

[0017] In an optional embodiment, a forced air cooling device is further included and is arranged beside the low-temperature heating device, the medium-temperature heating device, or the high-temperature heating device, and is used to cool the workpiece.

[0018] In an optional embodiment, a protective atmosphere device is also included for providing a protective gas, and the protective atmosphere device is connected to a low-temperature heating device, a medium-temperature heating device, a high-temperature heating device, a quenching device, and an air-cooling device.

[0019] In an optional embodiment, the quenching device includes a first quenching tank and a second quenching tank. The first quenching tank is located between the low-temperature heating device and the high-temperature heating device, and the second quenching tank is located between the medium-temperature heating device and the high-temperature heating device. The low-temperature heating device, the medium-temperature heating device and the high-temperature heating device are arranged in a triangular layout, with the low-temperature heating device and the medium-temperature heating device located on both sides of the high-temperature heating device.

[0020] In an optional embodiment, the heating temperature range of the low-temperature heating device is [20℃, 650℃], and the temperature uniformity of the low-temperature heating device is less than or equal to ±5℃.

[0021] In an optional embodiment, the heating temperature range of the medium-temperature heating device is [400℃, 850℃], and the temperature uniformity of the medium-temperature heating device is less than or equal to ±6℃.

[0022] In an optional embodiment, the heating temperature range of the high-temperature heating device is (850℃, 1400℃), and the temperature uniformity of the high-temperature heating device is less than or equal to ±7℃.

[0023] Secondly, embodiments of this application provide a heat treatment method that employs the aforementioned heat treatment system. The heat treatment method includes:

[0024] The heat treatment controller controls the heating element to heat the workpiece at a first heating rate and starts timing. The actual temperature T of the workpiece is detected after the set preheating time t0 is reached. i , will T i The lower limit T of the set suppression temperature range min Perform a comparison; if T i Less than T min Continue heating the workpiece; if T i Greater than or equal to T min Then, the heating element is controlled by the heat treatment controller to heat the workpiece at a second heating rate, and the actual temperature T of the workpiece is continuously monitored. i Where T is greater than T min The first heating rate is greater than the second heating rate, and the first and second heating rates gradually decrease over time.

[0025] When T i When the temperature equals T, the heat treatment controller controls the transfer device to transfer the workpiece to the quenching device for quenching.

[0026] In an optional embodiment, the workpiece is heated at the second heating rate, including: placing the workpiece in the holding environment, the temperature range of the holding environment being [T min ,T max ], T min = T-ΔT, T max = T+ΔT, wherein ΔT is a set inhibition value.

[0027] In an optional embodiment, the workpiece is quenched, including: placing the workpiece in a quenching device for quenching, and compensating the quenching medium in the quenching device by heating, the temperature of the compensating heating being less than or equal to 150℃, so that the temperature rise of the workpiece is less than or equal to 15℃.

[0028] In a third aspect, the embodiments of the present application provide a heat treatment method of a workpiece, which uses the heat treatment system described above, and the heat treatment method includes:

[0029] placing the workpiece in the low-temperature heating device for heating, and when the actual temperature T i of the workpiece reaches a set preheating temperature T1, taking out the workpiece by the transfer device and transferring into the quenching device for quenching;

[0030] placing the workpiece in the medium-temperature heating device for heating, and when T i reaches a set preheating temperature T2, taking out the workpiece by the transfer device and transferring into the quenching device for quenching;

[0031] placing the workpiece in the high-temperature heating device for heating, and when T i reaches a set preheating temperature T3, taking out the workpiece by the transfer device and transferring into the quenching device for quenching, or transferring into the air cooling device for annealing.

[0032] In an optional embodiment, the time for taking out the workpiece from the low-temperature heating device and the medium-temperature heating device and transferring into the quenching device is less than or equal to 10s, and the time for taking out the workpiece from the high-temperature heating device and transferring into the quenching device is less than or equal to 16s.

[0033] In a fourth aspect, the embodiments of the present application provide a readable storage medium, which includes a stored computer program, wherein when the computer program runs, the readable storage medium controls the device where the readable storage medium is located to execute the heat treatment method described above.

[0034] According to the above technical solution, the beneficial effects of the present application are:

[0035] 1. The system of this application no longer uses time or cycle time for production. Instead, it achieves production through signal transmission between the heating device and the transfer device. Specifically, the temperature of the heating device is detected by a temperature detector, and the obtained temperature is fed back to the heat treatment controller for judgment. The heat treatment controller then adjusts the heating method, allowing the heating element to be heated in different ways and better controlling temperature changes. After receiving the signal, the transfer device can transfer the workpiece from the heating device to the quenching device. This ensures that quenching is performed only when the preheating temperature is reached, solving the problem of proceeding to the next process before the required temperature is reached. This achieves effective temperature control, ensures process temperature control during heat treatment, and thus improves the quality of workpiece processing.

[0036] 2. The method of this application determines the workpiece heating process by setting a preheating time, determines the final temperature of the workpiece by setting the preheating temperature, and determines the lower limit value by setting a suppression temperature range to ensure the basis for judging the execution process. By comparing the detected actual temperature with the lower limit value of the suppression temperature range, the heating method of the workpiece can be adjusted. Heating is initially performed at a first heating rate. If the actual temperature does not reach the lower limit value, it indicates that the first stage of the heating process has not reached the required heating temperature according to the time or cycle. Heating continues to ensure that the temperature rises close to the preheating temperature. When the actual temperature reaches the lower limit value, the heating process is considered complete. At the end of the first heating rate stage, the second heating rate is used for heating, and the workpiece continues to slowly follow the heating device 110 to increase its temperature until the workpiece temperature reaches the preheating temperature. Then, the heating device 110 is turned on to proceed to the next process. Because the above-mentioned temperature detection and trigger temperature control adjustment method is added to the original time or cycle heat treatment process, the various process heating parameters are controlled and adjustable, ensuring that the heating temperature reaches the predetermined temperature and that the temperature in the second stage of the heating process can be maintained for a sufficient time. This achieves effective heat treatment temperature control, improves temperature reliability, and allows for more precise control of the workpiece temperature to meet the process requirements of heat treatment, thereby improving the quality of workpiece processing.

[0037] 3、the method of the application, by placing the workpiece in the low-temperature heating device, heating, detecting the temperature and making a judgment, so that the workpiece can be heated to the set first heating temperature, and then quenched; by placing the workpiece in the medium-temperature heating device, heating, detecting the temperature and making a judgment, so that the workpiece can be heated to the set second heating temperature, and then quenched; by placing the workpiece in the high-temperature heating device, heating, detecting the temperature and making a judgment, so that the workpiece can be heated to the set third heating temperature, and then quenched or annealed. Through the above three heating processes, the entire heat treatment process of the workpiece can be divided into three processes with a sequence, human factors can be eliminated, the uncertainty of manual operation can be avoided, the test parameters can be controlled and adjusted, the reliability of test data can be improved, and the processes can be coordinated to ensure that the heat treatment of the workpiece meets the production requirements.

[0038] 4、the readable storage medium of the application, through the computer program, the heat treatment method can be executed, and the heating of the workpiece and the heating mode adjustment, and the action control of the transfer device can be completed in the heat treatment process. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the application, and other embodiments and drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0040] Fig. 1 shows an embodiment of the heat treatment system of the application;

[0041] Fig. 2 shows the temperature-time relationship of the temperature control setting of the existing heat treatment system;

[0042] Fig. 3 shows the temperature-time relationship of the temperature control setting of the heat treatment system of the application;

[0043] Fig. 4 shows an embodiment of the heat treatment method of the heat treatment system of the application;

[0044] Reference signs: 100, heat treatment system; 110, heating device; 111, low-temperature heating device; 112, medium-temperature heating device; 113, high-temperature heating device; 120, quenching device; 121, first quenching tank; 122, second quenching tank; 130, transfer device; 140, air cooling device; 150, protective atmosphere device. DETAILED DESCRIPTION

[0045] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0046] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement condition and the like between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0047] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that the technical solutions can be realized by those of ordinary skill in the art, and when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.

[0049] The present application will be described below in conjunction with the accompanying drawings and specific embodiments:

[0050] Referring to FIG. 1, the first aspect embodiment of the present application provides a heat treatment system 100, which comprises a quenching device 120, a heating device 110, a transfer device 130 and a heat treatment controller. The quenching device 120 is used for quenching the heated workpiece. The quenching device 120 adopts a quenching tank, a quenching pool or other existing equipment capable of being used for quenching. The quenching tank is, for example, a water tank or an oil tank. The quenching tank has a cuboid structure and is in the form of a tank as a whole. The quenching tank is internally provided with a temperature sensor, an agitator shaft and an electric resistance wire. The temperature sensor is arranged in the interior of the quenching tank. A fixed motor is mounted on the tank wall. The agitator shaft is, for example, the output part of a blender. The agitator shaft is connected with the output end of the motor, for example, by a key connection. In this way, the quenching tank can be stirred. The temperature sensor can detect the temperature in the quenching tank and feed back the temperature to a terminal display. The electric resistance wire is also arranged in the quenching tank. The electric resistance wire is externally electrically connected. The electric resistance wire can be used to supplement the heating of the medium in the quenching tank. The quenching tank can also be used for liquid level adjustment. The quenching tank is connected with pipelines for feeding and discharging the medium. The liquid level of the quenching tank is adjusted by adjusting the flow rate or opening and closing of the pipelines.

[0051] The heating device 110 is used for heating the workpiece, and can adopt a heating furnace, a heating box or other heating equipment. The heating device 110 is spaced apart from the quenching device 120. After the workpiece is heated, the workpiece needs to be taken out of the heating device 110 and then placed into the quenching device 120. The heating device 110 is provided with a temperature detector and a heating element. The heating element is used for heating the workpiece. The heating element adopts a heating wire such as a resistance wire. The heating element can be electrically connected to work externally. The corresponding heating cavities are heated by the heating wire. The opening of the heating box is provided with a door. The door is connected with a lifting mechanism such as an electric cylinder. The opening and closing of the door can be adjusted by the electric cylinder. For example, the edge of the door is fixed with the output end of the electric cylinder through a screw. The electric cylinder can adjust the opening and closing state of the door relative to the heating box through the telescopic mode of the output end, so as to complete the opening and closing operation and realize the rapid opening of the door. The temperature detector adopts a temperature sensor or other devices capable of detecting temperature such as an electronic thermometer. The temperature detector is arranged in the heating device 110. The temperature detector is used for detecting the temperature of the workpiece in the heating device 110 and feeding back the actual temperature data to a heat treatment controller. The heat treatment controller is a program for executing temperature control in the terminal. The heating mode of the heating element can be adjusted by adjusting the current. The heat treatment controller is used for adjusting the heating mode of the heating element. The heating mode such as the existing heating furnace or heating box can adjust the heating rate, heating time, temperature limit of heating and the like. For example, the temperature in the heating device 110 is raised at a set temperature rising rate. The temperature in the heating device 110 is maintained within a certain range.

[0052] The transfer device 130 is used for receiving the signal of the heat treatment controller. After the detected temperature of the workpiece reaches the set preheating temperature, the workpiece is transferred from the heating device 110 to the quenching device 120. The transfer device 130 automatically operates. The transfer device 130 is provided with an automatic operation program. After receiving the signal of the opening of the heating device 110, the workpiece is taken out of the heating cavity of the heating device 110 and transferred to the quenching device 120. The transfer device 130 can adopt a mechanical hand or other equipment capable of performing taking and placing operations. The mechanical hand can grasp or release the workpiece. The running track of the mechanical hand after grasping the workpiece is from the heating device 110 to the quenching device 120. Through the transfer device 130, the automatic transfer operation from the low-temperature heating device 111 to the quenching device 120, from the medium-temperature heating device 112 to the quenching device 120 or from the high-temperature heating device 113 to the quenching device 120 can be realized.

[0053] Please refer to FIG. 2, the prior art heat treatment system, mostly with time control to produce, but after heating process is executed according to time, often appear temperature does not reach requirement and enters next process, influence heat treatment temperature control and effect.But the application no longer uses time or rhythm to produce, but is realized through signal transmission between heating device 110 and transfer device 130.Specifically, the temperature of heating device 110 is detected by temperature detector, and the temperature obtained is fed back to heat treatment controller for judgment, so that the heating mode is adjusted by heat treatment controller, so that the heating piece can be heated in different ways, and the temperature change can be better regulated, and the transfer device 130 can transfer the workpiece from the heating device 110 to the quenching device 120 after receiving the signal, so that quenching is carried out when the temperature reaches the preheating temperature, solving the problem that the temperature does not reach the requirement to enter the next process, realizing effective temperature control, ensuring the process temperature control of heat treatment process, and improving the workpiece processing quality.

[0054] In an optional embodiment, when the heat treatment controller adjusts the heating mode of the heating piece, the heating device 110 maintains the set heating rate to heat and keeps the temperature in a certain temperature range, and the heat treatment controller can select the heating mode by detecting the temperature inside the heating device 110 or the temperature of the workpiece, so as to regulate the temperature change, specifically:

[0055] The heating piece enters the preheating working section under the control of the heat treatment controller, and starts timing, the starting point of the preheating working section is the timing zero point, the preheating working section heats the workpiece, and the heating rate of the heating device 110 can be set when heating, so that the workpiece temperature rises at a certain rate;Before this process, the parameters of the heating device 110 can be set, such as setting the preheating time, the preheating temperature, and the inhibition temperature interval, and then starting the heating device 110 to heat the workpiece.Then the temperature of the workpiece is detected, and when the actual temperature T i of the workpiece reaches the set preheating time t0, the actual temperature T i of the workpiece is detected. min The actual temperature T i is compared with the lower limit value T min of the set inhibition temperature interval; if T i is less than T min , the heating piece continues to heat, and the heating mode at this time is that the heating device 110 heats at a first heating rate; if T i is greater than or equal to T iequal to T, the heating stops, in actual process, there may be time difference in detection, as long as the first time detects T i equal to T, the heating stops, in actual process, there may be time difference in detection, as long as the first time detects T

[0056] In optional embodiments, the heating device 110 is also provided with an input interface, or the heat treatment controller can receive terminal input data, such as inputting corresponding data through an input box on the touch screen interface, so as to set the preheating time, the preheating temperature, the suppression temperature interval and the suppression value. The preheating time refers to the time for the heating device 110 to heat the workpiece to the preheating temperature. The workpiece is heated in a time and beat control mode, and the preheating time is also used for control. In fact, the time for the workpiece temperature to continue to heat to the set preheating temperature is longer than the preheating time in FIG. 2, and is in an arc bending state on the temperature-time line. When the workpiece is heated to a temperature close to the preheating temperature, the temperature rising rate decreases. After the preheating time and the preheating temperature are set, the initial temperature rising rate is determined. Before the temperature rising rate decreases when the temperature rising rate approaches the preheating temperature, the preheating temperature is the optimal process temperature under the quality requirement of the workpiece. The preheating temperature can ensure that the process requirement is met. Through the suppression temperature interval, the holding temperature of the final workpiece can be maintained in the range of the suppression temperature interval. The suppression value is a temperature setting value for preventing the workpiece temperature from rising too fast or even exceeding the preheating temperature. Through the suppression value, a program for suppressing the temperature rise of the workpiece in advance can be added to the heat treatment controller, so that the workpiece can slowly rise to the preheating temperature.

[0057] In optional embodiments, the set suppression temperature interval is [T min , T max ], the lower limit value T min of the set suppression temperature interval is T-ΔT, and the upper limit value T max of the set suppression temperature interval is T+ΔT, wherein ΔT is the set suppression value. In actual operation, the parameters of the heating device 110 are set first, and the suppression value, the preheating time and the preheating temperature are set. The suppression value is the temperature entering the holding work section, which is less than and close to the preheating temperature. The suppression temperature interval is the holding interval with the above lower limit value as the lower limit, and the upper limit value can also be determined. In optional embodiments, the temperature of the workpiece is continuously detected by the temperature detector. When T i is greater than or equal to the set preheating temperature T, the heat treatment controller sends a signal to the transfer device 130 to make the transfer device 130 take out the workpiece from the heating device 110 and transfer it to the quenching device 120, such as sending a signal to the manipulator to operate according to the pre-set path of the manipulator to take out the workpiece and place it into the quenching device 120.

[0058] In an optional embodiment, the heating device 110 comprises a low-temperature heating device 111, a medium-temperature heating device 112 and a high-temperature heating device 113, which are respectively used to heat the workpiece to a preheating temperature T1, a preheating temperature T2 and a preheating temperature T3, the preheating temperature T1 is less than the preheating temperature T2, and the preheating temperature T2 is less than the preheating temperature T3, the low-temperature heating device 111, the medium-temperature heating device 112 and the high-temperature heating device 113 are respectively spaced from the quenching device 120, so that there is a certain transfer position space from the heating device 110 to the quenching tank; the low-temperature heating device 111, the medium-temperature heating device 112 and the high-temperature heating device 113 respectively adopt a heating furnace, which can also adopt a heating box, and the inside of the heating box has a heating cavity for accommodating the workpiece. For example, the low-temperature heating device 111, the medium-temperature heating device 112 and the high-temperature heating device 113 respectively adopt a heating box. Through the low-temperature heating device 111, the medium-temperature heating device 112 and the high-temperature heating device 113, the workpiece can be heated at three different temperatures, and the heat treatment process is divided into three stages, which can strengthen the temperature control of each process stage.

[0059] In an optional embodiment, the heat treatment system 100 further comprises an air cooling device 140 arranged beside the low-temperature heating device 111, the medium-temperature heating device 112 or the high-temperature heating device 113, which is used to cool the workpiece after a certain heating process is completed. For example, the air cooling device 140 is fixed beside the quenching device 120, and the air cooling device 140 adopts a fan, which can also adopt other cooling devices, the fan can adopt a variable frequency fan, which can adjust the continuous cooling rate of the workpiece through the variable frequency working mode, and a temperature detector such as an electronic thermometer is arranged at the air cooling device 140, which can detect the cooling of the workpiece, so as to form a cooling speed curve for analysis and research. In an optional embodiment, the heat treatment system 100 further comprises a feeding table, which is used to convey the workpiece, such as a conveyor belt or other devices with conveying function, which can send the workpiece into the operating range of the transfer device 130, such as a robot which can grab the workpiece from the feeding table and put it into the heating device 110.

[0060] In an optional embodiment, the heat treatment system 100 further comprises a protective atmosphere device 150 for providing a protective atmosphere, which is connected to the low-temperature heating device 111, the medium-temperature heating device 112, the high-temperature heating device 113, the quenching device 120 and the air cooling device 140, and comprises a generator or gas source for providing the protective atmosphere and a pipeline connected to and communicating with the generator or gas source at one end and connected to and communicating with the low-temperature heating device 111, the medium-temperature heating device 112 and the high-temperature heating device 113 at the other end, such as being connected to the side wall of the heating box and communicating with the heating cavity, and the quenching device 120 is also connected to and communicates with the generator or gas source for the protective atmosphere, such as being connected to the quenching tank by a pipeline, so as to provide the protective atmosphere for the low-temperature heating device 111, the medium-temperature heating device 112, the high-temperature heating device 113 and the quenching device 120 and automatically supplement, ensure the protective atmosphere, and meet the processing requirements of the workpiece, and a flow regulating valve can be arranged on the pipeline to regulate the flow of the protective atmosphere.

[0061] In an optional embodiment, the quenching device 120 comprises a first quenching tank 121 and a second quenching tank 122, the first quenching tank 121 is arranged between the low-temperature heating device 111 and the high-temperature heating device 113, and the second quenching tank 122 is arranged between the medium-temperature heating device 112 and the high-temperature heating device 113, and the low-temperature heating device 111, the medium-temperature heating device 112 and the high-temperature heating device 113 are arranged in a triangular layout, and the low-temperature heating device 111 and the medium-temperature heating device 112 are arranged on the two sides of the high-temperature heating device 113, respectively; the first quenching tank 121 is a water tank, and the second quenching tank 122 is an oil tank, and when the low-temperature heating is performed, the water tank is used for quenching, when the medium-temperature heating is performed, the water tank or the oil tank is used for quenching, and when the high-temperature heating is performed, the water tank or the oil tank is used for quenching, or the air cooling device 140 can be directly used for annealing.

[0062] In an optional embodiment, the heating range of the low-temperature heating device 111 for the workpiece is [20℃, 650℃], and the temperature uniformity of the low-temperature heating device 111 is less than or equal to ±5℃; the heating range of the medium-temperature heating device 112 for the workpiece is [400℃, 850℃], and the temperature uniformity of the medium-temperature heating device 112 is less than or equal to ±6℃; the heating range of the high-temperature heating device 113 for the workpiece is (850℃, 1400℃], and the temperature uniformity of the high-temperature heating device 113 is less than or equal to ±7℃; through the arrangement of the three different temperature heating devices 110, the workpiece can be heated at three different temperature gradients, and the temperature can be more accurately adjusted.

[0063] In the second aspect of the present application, a heat treatment method is provided, which adopts the heat treatment system 100 described above, and the heat treatment method comprises heating the workpiece and quenching after the heating is completed, and specifically comprises:

[0064] The heat treatment controller controls the heating element to heat the workpiece at a first heating rate and starts timing. The preheating stage begins when the timing reaches zero. The temperature of the workpiece is monitored by a temperature detector, and the actual temperature T of the workpiece is detected after the set preheating time t0 is reached. i The detected actual temperature is fed back to the heat treatment controller, which then compares the temperatures. Specifically, the T... i The lower limit T of the set suppression temperature range min Compare: If T i Less than T min Continue heating the workpiece; if T i Greater than or equal to T min Then, the heating element is controlled by the heat treatment controller to heat the workpiece at a second heating rate, and the actual temperature T of the workpiece is continuously monitored. i Where T is greater than T min The first heating rate is greater than the second heating rate, and the first and second heating rates gradually decrease over time.

[0065] When T i When the temperature reaches T, the actual temperature is detected to have reached the preheating temperature, and the next process can proceed. The heat treatment controller sends a signal to the controller of the heating device 110 or the controller of the door, and then automatically opens the door of the heating device 110. At the same time, the signal is also transmitted to the transfer device 130. The heat treatment controller controls the transfer device 130 to take out the workpiece and then place the workpiece into the quenching device 120 for quenching. Alternatively, the robotic arm can first reach into the heating device 110, grab the workpiece, and then take it out and place it into the quenching device 120. The entire motion path is preset to ensure that the robotic arm can operate smoothly. Alternatively, the workpiece can be manually placed into the quenching device 120 when it is taken out.

[0066] Through the above steps, precise control of the workpiece temperature can be achieved. Based on the heat treatment controller heating according to the preheating time, a temperature control mode is added, automatically enabling the heat treatment controller to suppress the temperature rise of the adjusted temperature. The temperature control mode is executed according to S2 above, which is equivalent to adding a temperature rise suppression adjustment function and a temperature suppression range window to the heat treatment controller. When the temperature in the heating device 110 reaches the lower limit of the preheating temperature range, the heat treatment controller executes the above temperature adjustment mode. When the heat treatment controller reaches the actual temperature judgment, it mainly considers whether the actual temperature has reached the preheating temperature. If the trigger condition is not met, no signal is sent to the transfer device 130. This ensures precise coordination between the heating device 110 and the transfer device 130, avoiding errors. For example, if steps S1-S3 are used to perform high-temperature sintering of a solid electrolyte, the heating process is: heating at 3℃ / min to 1200℃, holding for 16 hours, and then cooling to 150℃.

[0067] Please refer to Figure 2, due to the prior art heat treatment system 100, has begun to use automated heat treatment, automatically process, first heating and then holding and finally cooling, generally by time or beat, to trigger the automatic program start, as shown in a program set temperature with time temperature control chart, d is the theoretical temperature holding time interval. The problem of such control is that when the need to control the heating or cooling stage, such as using time to control, need to estimate the time, can not be accurate control, process completion temperature does not meet the requirements. Such as will appear in the specified time, the furnace temperature does not reach the set value, heating furnace will continue to workpiece heating in the next process stage, then the time required for the next process stage is accordingly shortened, does not meet the actual set holding time, so, in the automatic program, will appear temperature does not meet the process requirements and mis trigger the next process.

[0068] Please refer to Figure 3, b is the actual temperature of the workpiece in the heating device 110 with time, c is the time point of the workpiece into temperature holding, also for the intersection point of the actual temperature reaching the preheating temperature-inhibition value in this application, d is the inhibition temperature interval, e is the theoretical temperature holding time interval, f is the actual temperature holding time interval of the workpiece in this application, time 1 preheating time, time 2 is the time when the workpiece needs to be taken out for the next process. The application determines the heating process of the workpiece by setting the preheating time, determines the final temperature of the workpiece by setting the preheating temperature, and determines the lower limit value by setting the inhibition temperature interval, ensures the basis for judging the execution process, and adjusts the heating mode of the workpiece by comparing the detected actual temperature with the lower limit value of the inhibition temperature interval, first heats at a first heating rate, and when the actual temperature does not reach the lower limit value, it indicates that the first stage of the heating process does not reach the required heating temperature by time or beat, and the workpiece is heated to ensure that the temperature can be raised close to the preheating temperature. When the actual temperature reaches the lower limit value, it indicates that the first heating rate stage of the heating process is over, and the workpiece is heated at a second heating rate at this time, and the workpiece is continued to be slowly heated with the heating device 110 until the workpiece temperature reaches the preheating temperature, and then the heating device 110 is opened for the next process. Because the above temperature detection and trigger temperature control adjustment mode is added to the original time or beat heat treatment process, the process heating parameters are controlled and adjusted, the heating temperature reaches the predetermined temperature, the second stage temperature of the heating process can be maintained for a sufficient time requirement, effective heat treatment temperature control is realized, the temperature reliability can be improved, the workpiece temperature can be more accurately controlled to meet the process requirements of heat treatment, and the workpiece processing quality is improved.

[0069] In an optional embodiment, the temperature of the workpiece is detected by the temperature detector. The detection can be performed at a fixed time, in real time, or in real time after the preheating time is reached. The actual temperature is fed back to the heat treatment controller. The heat treatment controller works to compare the actual temperature with the preheating temperature. Specifically, the actual temperature is compared with the lower limit value of the suppression temperature range. When the actual temperature reaches the lower limit value of the suppression temperature range, the heat treatment controller controls the heating member to heat in a holding mode. The temperature in the heating device 110 is maintained in the suppression temperature range by the heating member. The suppression temperature range is the interval value above and below the preheating temperature. The above temperature is maintained to slowly raise the temperature of the workpiece to the preheating temperature. When the temperature detector detects that the temperature of the workpiece reaches the preheating temperature, an opening signal of the heating device 110 is triggered. The door of the heating device 110 is automatically opened, and the workpiece of the next process is prepared.

[0070] In an optional embodiment, the workpiece is heated at a second heating rate, which includes: placing the workpiece in a holding environment, and the temperature range of the holding environment is [T min ,T max ]. Before the actual temperature reaches the lower limit value of the preheating temperature range, the heating device 110 heats the workpiece to increase the temperature, i.e., the heat treatment controller sends a heating signal, and the heating member performs a heating operation. The above lower limit value T min = T-ΔT. After the actual temperature reaches the lower limit value of the preheating temperature range, the heating device 110 holds the workpiece, i.e., the heat treatment controller sends a holding signal, and the heating member performs a holding operation. The above heating and holding are the conventional temperature control modes of the heating member. The implementation of the above process is to first set a suppression value to determine a temperature value before approaching the preheating temperature. The preheating temperature minus the suppression value is the lower limit value of the suppression temperature range. According to the holding mode, the upper limit value of the suppression temperature range is the preheating temperature plus the suppression value, T max = T+ΔT, where ΔT is the set suppression value. The entry into the holding work section is to increase the suppression value in the temperature rise. After the temperature of the workpiece rises, the final value of the temperature rise is limited. The heating member can only heat the temperature in the heating device 110 to the vicinity of the preheating temperature. The final heating temperature range of the heating device 110 is [preheating temperature-suppression value, preheating temperature+suppression value]. In an optional embodiment, after the actual temperature reaches the lower limit value of the suppression temperature range, the heat treatment controller judges whether the actual temperature is equal to the preheating temperature, i.e., the program of the heat treatment controller is executed to the later section. The actual temperature of the workpiece approaches the preheating temperature. The actual temperature is compared with the preheating temperature. If they are equal, an opening signal of the heating device 110 is triggered. Then, the workpiece is taken out and the quenching process is performed.

[0071] In an optional embodiment, when the workpiece is quenched by the quenching device 120, the quenching medium in the quenching device 120 is compensated and heated, the temperature of the compensation and heating is less than or equal to 150℃, so that the temperature rise of the workpiece is less than or equal to 15℃, and the quenching device 120 can adopt a quenching tank. The quenching tank is a cuboid structure, and the whole is in the form of a tank. It is internally provided with a temperature sensor, an agitator shaft, a heating wire, and can adjust the liquid level. The effective capacity of the quenching tank is 1-1.5m³. The temperature sensor can detect the temperature in the quenching tank. The agitator shaft is like the output part of a blender. The water or oil in the quenching tank is stirred by the agitator shaft to avoid local overheating. The quenching tank is heated by the heating wire to realize temperature compensation. The above-mentioned compensation heating mode includes two modes. One is that the heating wire used for compensation heating belongs to the quenching device 120. The heating wire is in the quenching medium, and the end thereof is fixed to the inner wall of the quenching device 120, such as clamping and fixing, or other conventional fixing modes. The water or oil is heated by the heating wire, and then the temperature of the water or oil is used to assist the temperature rise of the workpiece. The other is an external heating mode. The heating device used for auxiliary heating is independent of the quenching device 120. The heating device is an existing electric heating element, such as an electric heating rod, an electric heating tube, etc. The heating device is only needed to be placed in the water tank or oil tank for quenching. The water or oil is heated by the external heating device, and then the workpiece is indirectly compensated and heated.

[0072] Please refer to FIG. 4, the third aspect of the present application provides a heat treatment method of a workpiece, which adopts the above-mentioned heat treatment system 100. The method is a process performed on the workpiece. Since the heating device 110 includes three: a low-temperature heating device 111, a medium-temperature heating device 112 and a high-temperature heating device 113, respectively like a low-temperature heating box, a medium-temperature heating box and a high-temperature heating box, or a low-temperature furnace, a medium-temperature furnace, a high-temperature furnace, etc. The method also includes three processes. The specific heat treatment method includes:

[0073] S1, the workpiece is placed in the low-temperature heating device 111 for heating. The real-time temperature of the workpiece is detected by the temperature detection module, and the heat treatment controller performs judgment. When the actual temperature T i of the workpiece reaches the set preheating temperature T1, such as 50℃, the heat treatment controller controls the transfer device 130 to take out the workpiece and transfer it into the quenching device 120 for quenching. By placing the workpiece in the low-temperature heating device 111 for heating, detecting the temperature and making a judgment, the workpiece can be heated to the set first heating temperature, and then quenched.

[0074] S2, the workpiece is transferred into the medium temperature heating device 112 for heating, the real-time temperature of the workpiece is detected through the temperature detection module, and the judgment is executed through the heat treatment controller. When Ti reaches the set preheating temperature T2, such as 500 DEG C, the workpiece is taken out and transferred into the quenching device 120 for quenching; the workpiece is heated in the medium temperature heating device 112, the temperature is detected and the judgment is executed, so that the workpiece can be heated to the set second heating temperature, and then quenched.

[0075] S3, the workpiece is transferred into the high temperature heating device 113 for heating, the real-time temperature of the workpiece is detected through the temperature detection module, and the judgment is executed through the heat treatment controller. When Ti reaches the set preheating temperature T3, such as 1000 DEG C, the workpiece is taken out and transferred into the quenching device 120 for quenching, or transferred to the air cooling device 140 for annealing; the workpiece is heated in the high temperature heating device 113, the temperature is detected and the judgment is executed, so that the workpiece can be heated to the set third heating temperature, and then quenched or annealed. i

[0076] The above heat treatment method is specifically as follows: calling and adjusting the heat treatment controller, loading the heat treatment controller, heating the heating device 110, triggering the transfer device 130 (mechanical hand) to load, the transfer device 130 (mechanical hand) automatically moving to the loading position, (or manual loading), the low temperature heating device 111 starts to work, the temperature reaches the set value, the low temperature heating device 111 door opens, the mechanical hand automatically loads, the medium temperature heating device 112 door closes, the heating time reaches the set value, the medium temperature heating device 112 door opens, the transfer device 130 automatically takes the material and transfers, automatically quenches, the quenching time reaches the set value, the high temperature heating device 113 door opens, the transfer device 130 automatically puts the workpiece into the tempering device, the high temperature heating device 113 door closes, the tempering time reaches the set value, the high temperature heating device 113 door opens, the transfer device 130 automatically takes the material and moves to the air cooling device 140, the air cooling device 140 opens, the air cooling time reaches the set value, the transfer device 130 returns to the initial position, and the process is completed. Through the above process, the whole heat treatment process of the workpiece can be divided into three heating and quenching processes with a sequence, human factors can be eliminated, the uncertainty of manual operation can be avoided, each test parameter can be controlled and adjusted, the reliability of test data can be improved, each process can be cooperated, and the heat treatment of the workpiece can meet the production requirements.

[0077] ​The application can be applied to the development of heat treatment processes of various materials, including steel, aluminum, magnesium alloy, etc. The heat treatment processes involved include processes such as normalizing, tempering, annealing, solution aging, and controlled cooling, and the combination of various processes is realized. A protective atmosphere is configured, and special heat treatment processes can be realized. The above components can be arranged in one area and side walls or baffles are arranged, so as to form a heat treatment working area, as shown in FIG. 1. The scheme can avoid the uncertainty error caused by traditional manual operation, and can also avoid the problem that the temperature cannot meet the requirements due to the use of time or beat production trigger process conditions in automatic program control. The heating device 110, the quenching device 120, and the transfer device 130 can effectively cooperate, so that each test parameter is controlled and adjustable, the workpiece can meet the process requirements after heating, and the reliability of test data can be improved. At the same time, the safety problem caused by operation can also be avoided. The heat treatment system 100 is compatible with automatic control, can meet the requirements of the diversity of experimental schemes, and can control and adjust various parameters of the heat treatment process. The process parameters in the experiment are tracked, which is beneficial to the comparative analysis of experimental data in the later stage, can effectively improve the precision of the heat treatment process experiment, obtain more accurate experimental data, and is beneficial to the development of new materials and new processes.

[0078] In an optional embodiment, the time from the heating device 110 to the quenching device 120 is less than or equal to 10s, and the time from the low-temperature heating device 111 to the quenching device 120 is less than or equal to 10s, the time from the medium-temperature heating device 112 to the quenching device 120 is less than or equal to 10s, and the time from the high-temperature heating device 113 to the quenching device 120 is less than or equal to 16s. The quenching device 120 includes a water tank and an oil tank. When low-temperature heating is adopted, the water tank is used for quenching; when medium-temperature heating is adopted, the water tank or the oil tank is used for quenching; and when high-temperature heating is adopted, the water tank or the oil tank is used for quenching. The workpiece is taken out from the high-temperature heating device 113 by the transfer device 130 and transferred to the water tank or the oil tank within 16s, the workpiece is taken out from the medium-temperature heating device 112 and transferred to the water tank or the oil tank within 10s, the workpiece is taken out from the low-temperature heating device 111 and transferred to the water tank within 10s, and the transfer speed of the transfer device 130 to the workpiece can be adjusted.

[0079] In optional embodiments, the low-temperature heating device 111 has a heating temperature range of [20℃, 650℃], such as 20℃, 60℃, 100℃, 150℃, 200℃, 260℃, 300℃, 350℃, 400℃, 450℃, 500℃, 600℃, or 650℃, a temperature uniformity of the low-temperature heating device 111 less than or equal to ±5℃, and a door opening time of the low-temperature heating device 111 ≤6 seconds. In optional embodiments, the medium-temperature heating device 112 has a heating temperature range of [400℃, 850℃], such as 400℃, 450℃, 500℃, 550℃, 600℃, 650℃, 700℃, 750℃, 800℃, or 850℃, a temperature uniformity of the medium-temperature heating device 112 less than or equal to ±6℃, and a door opening time of the medium-temperature heating device 112 ≤6 seconds. In optional embodiments, the high-temperature heating device 113 has a heating temperature range of (850℃, 1400℃], such as 851℃, 900℃, 950℃, 1000℃, 1050℃, 1100℃, 1150℃, 1200℃, 1250℃, 1300℃, 1350℃, or 1400℃, a temperature uniformity of the high-temperature heating device 113 less than or equal to ±7℃, and a door opening time of the high-temperature heating device 113 ≤12 seconds.

[0080] In optional embodiments, in addition to the above processes, the heat treatment method can realize free combination of processes such as normalizing, tempering, annealing, solution aging, and controlled cooling, and can meet various material and process experimental scene applications. The heat treatment system 100 has multiple adjustable parameters for each process and its device, and increases the adjustability of various experimental parameters and experimental schemes in the laboratory, and has great improvement in flexibility compared with traditional laboratory heat treatment systems 100.

[0081] In a third aspect of the embodiments of the present application, a readable storage medium is provided, which includes a stored computer program, wherein the computer program controls the device where the readable storage medium is located to perform the heat treatment method described above when the computer program runs. The readable storage medium can realize each step or combination of steps of the heat treatment method by computer program instructions. These computer program instructions can also be loaded into a computer or other programmable data processing device, so that a series of operation steps are performed on the computer or other programmable device to generate a computer-implemented process, so that the instructions executed on the computer or other programmable device provide each step of the heat treatment method. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to perform temperature regulation of the heating device 110, send the operation signal of the transfer device, and realize adjustment of the heating mode and control of the action of the transfer device 130.

[0082] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", "an optional example" or "optional implementation" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the description of the specification, the illustrative description of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification.

[0083] In addition, the technical solutions among various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0084] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A thermal processing system, characterized by, The application relates to a quenching device (120) for quenching a heated workpiece; a heating device (110) for heating the workpiece, wherein the heating device (110) is spaced apart from the quenching device (120), and the heating device (110) is provided with a temperature detector and a heating element, wherein the heating element is used for heating the workpiece, and the temperature detector is used for detecting the temperature of the workpiece; a transfer device (130) for transferring the workpiece from the heating device (110) to the quenching device (120) after the detected temperature of the workpiece reaches a set preheating temperature; and a heat treatment controller electrically connected with the temperature detector, used for receiving the workpiece temperature fed back by the temperature detector, adjusting the heating mode of the heating element, and controlling the action of the transfer device (130). The application adjusts the heating mode of the heating element, and specifically comprises the following steps: controlling the heating element to enter a preheating working section and start timing, and heating the workpiece; The heating device (110) comprises a low-temperature heating device (111), a medium-temperature heating device (112) and a high-temperature heating device (113), which are respectively used for heating the workpiece to a preheating temperature T1, a preheating temperature T2 and a preheating temperature T3, wherein the preheating temperature T1 is less than the preheating temperature T2, the preheating temperature T2 is less than the preheating temperature T3, and the low-temperature heating device (111), the medium-temperature heating device (112) and the high-temperature heating device (113) are respectively spaced apart from the quenching device (120). The application further comprises an air cooling device (140) arranged beside the low-temperature heating device (111), the medium-temperature heating device (112) or the high-temperature heating device (113), and used for cooling the workpiece.

2. The thermal processing system of claim 1, wherein, The application further comprises a protective atmosphere device (150) for providing a protective gas, wherein the protective atmosphere device (150) is communicated to the low-temperature heating device (111), the medium-temperature heating device (112), the high-temperature heating device (113), the quenching device (120) and the air cooling device (140). The quenching device (120) comprises a first quenching tank (121) and a second quenching tank (122), wherein the first quenching tank (121) is located between the low-temperature heating device (111) and the high-temperature heating device (113), the second quenching tank (122) is located between the medium-temperature heating device (112) and the high-temperature heating device (113), the low-temperature heating device (111), the medium-temperature heating device (112) and the high-temperature heating device (113) are arranged in a triangular layout, and the low-temperature heating device (111) and the medium-temperature heating device (112) are respectively located on two sides of the high-temperature heating device (113). detecting the actual temperature T of the workpiece after reaching the set preheating time t0 i comparing the actual temperature T with the lower limit value T min of the set inhibition temperature range; if T i is less than T min , controlling the heating member to continue heating; if T i is greater than or equal to T min , controlling the heating member to enter a holding work section to heat the workpiece in the set inhibition temperature range, and continuing to detect the actual temperature T i of the workpiece; if T i is greater than or equal to the set preheating temperature T, controlling the heating member to end heating.

3. The thermal processing system of claim 2, wherein, The set suppression temperature range is [T min , T max ], the lower limit value T min = T - ΔT of the set suppression temperature range, and the upper limit value T max = T + ΔT of the suppression temperature range, wherein ΔT is a set suppression value.

4. The thermal processing system of claim 2, wherein, The control transport device (130) acts, specifically including: when the T i Greater than or equal to the T, the heat treatment controller controls the transport device (130) to act.

5. The thermal processing system of any of claims 1-4, wherein, The heating temperature range of the low-temperature heating device (111) is [20 DEG C, 650 DEG C], and the temperature uniformity of the low-temperature heating device (111) is less than or equal to + / - 5 DEG C.

6. The thermal processing system of claim 5, wherein, ​ 7. The thermal processing system of claim 6, wherein, ​ 8. The thermal processing system of claim 6, wherein, ​ 9. The thermal processing system of claim 6, wherein, ​ 10. The thermal processing system of claim 6, wherein, The heating temperature range of the medium-temperature heating device (112) is [400℃, 850℃], and the temperature uniformity of the medium-temperature heating device (112) is less than or equal to ±6℃.

11. The thermal processing system of claim 6, wherein, The heating temperature range of the high-temperature heating device (113) is (850℃, 1400℃], and the temperature uniformity of the high-temperature heating device (113) is less than or equal to ±7℃.

12. A heat treatment method characterized by, The heat treatment method comprises: The heat treatment controller controls the heating element to heat the workpiece at a first heating rate and starts timing to detect the actual temperature T of the workpiece after the set preheating time t0 is reached. i , the T i The lower limit T of the set suppression temperature range min Perform a comparison; if T i Less than T min Continue heating the workpiece; if T i Greater than or equal to T min Then, the heat treatment controller controls the heating element to heat the workpiece at a second heating rate, where T is greater than T. min The first heating rate is greater than the second heating rate, and the first and second heating rates gradually decrease over time. When the T i When the T is equal to the T, the heat treatment controller controls the transfer device to transfer the workpiece to a quenching device for quenching.

13. The heat treatment method according to claim 12, characterized by, Heating the workpiece at the second heating rate comprises: placing the workpiece in a temperature holding environment, the temperature interval of the temperature holding environment being [T min , T max ] , T min = T-ΔT, T max = T+ΔT, wherein the ΔT is a set inhibition value.

14. The heat treatment method according to claim 12, wherein Quenching the workpiece, comprising: placing the workpiece into the quenching device (120) for quenching, and compensating the quenching medium in the quenching device (120) by heating, the temperature of the compensating heating being less than or equal to 150℃, so that the temperature rise of the workpiece is less than or equal to 15℃.

15. A heat treatment method characterized by, The heat treatment method comprises: The workpiece is placed in the low-temperature heating device (111) for heating, and when the actual temperature T i When the set preheating temperature T1 is reached, the workpiece is taken out by the transfer device (130) and transferred into the quenching device (120) for quenching. transferring the workpiece into the medium temperature heating device (112) for heating, waiting for the T i When the set preheating temperature T2 is reached, the workpiece is taken out by the transfer device (130) and transferred into the quenching device (120) for quenching. The workpiece is transferred into the high-temperature heating device (113) for heating, and when the T i When the set preheating temperature T3 is reached, the workpiece is taken out by the transfer device (130) and transferred into the quenching device (120) for quenching, or transferred to the air cooling device (140) for annealing.

16. The heat treatment method according to claim 15, wherein The time for taking out the workpiece from the low-temperature heating device (111), the medium-temperature heating device (112) and transferring to the quenching device (120) is less than or equal to 10s, and the time for taking out the workpiece from the high-temperature heating device (113) and transferring into the quenching device (120) is less than or equal to 16s.

17. A readable storage medium, characterized by, It comprises a stored computer program, wherein the computer program controls the device where the readable storage medium is located to execute the heat treatment method of any one of claims 12-16 when the computer program is running.

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