High-temperature oil quenching immersion heat treatment experimental device and experimental method

Abstract

The invention discloses a high-temperature oil quenching immersion heat treatment experimental device and an experimental method, and belongs to the technical field of quenching devices. According to the high-temperature oil quenching immersion heat treatment experimental device, a clamp is arranged in an oil quenching experimental box, a lifting element for driving the clamp to ascend and descend in the oil quenching experimental box is arranged on the oil quenching experimental box, and a heating furnace is arranged on one side of the oil quenching experimental box; the other side of the oil quenching experiment box is provided with a temperature data collector used for detecting the temperature of the sample and displaying the real-time temperature of the sample, an image system used for shooting and recording the oil quenching experiment phenomenon is arranged outside the oil quenching experiment box, and a cooling medium system is arranged outside the oil quenching experiment box; the cooling medium system is used for conveying quenching oil into the oil quenching experiment box and discharging the quenching oil out of the oil quenching experiment box, and an induced draft fan for discharging high-temperature mist in the oil quenching experiment box is arranged outside the oil quenching experiment box. With the adoption of the high-temperature oil quenching immersion heat treatment experimental device and the experimental method, the sample quenching state under different sample states can be observed and analyzed, and accurate data guidance is provided for industrial production of samples; the operation efficiency and the research accuracy of a quenching experiment are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of quenching devices, and in particular to a high-temperature oil quenching immersion heat treatment experimental device and an experimental method. Background Art

[0002] Heat treatment is a crucial metalworking process in industrial production, playing a crucial role in improving the strength, eliminating internal stresses, and optimizing the surface properties of mechanical parts. It can also enhance their microstructure and effectively extend their service life. Its main process flow includes heating, insulation, and cooling. Currently, oil quenching is commonly used during heat treatment cooling, where the heated workpiece is immersed in quenching oil for rapid cooling. However, oil quenching is often accompanied by open flames and oil fumes, causing significant environmental pollution. It also requires the use of specialized quenching oil, which is costly. To fully realize the performance potential of metal alloys, obtain optimal oil quenching conditions, and mitigate safety and pollution issues associated with oil quenching, high-temperature oil quenching experiments are needed to analyze the mechanisms and design safe and reliable equipment. Therefore, to improve experimental efficiency, enhance the oil quenching environment, explore the oil quenching mechanisms, and reduce production and maintenance costs, it is necessary to design and manufacture cleaner, more environmentally friendly, automated, and safer equipment. Summary of the Invention

[0003] The purpose of the present invention is to provide a high-temperature oil quenching immersion heat treatment experimental device and experimental method, which detects the real-time temperature of the sample by a thermocouple and observes the quenching state of the sample by a high-speed camera and a laser transmitter, which is conducive to producing high-definition quenching state patterns, observing and analyzing the quenching states of different samples, and providing accurate data guidance for the industrial production of the samples; timely replacement of the quenching oil in the oil quenching experimental box by an oil storage tank and a cooler is conducive to improving the operating efficiency of the quenching experiment and improving the research accuracy of the quenching experiment.

[0004] To achieve the above-mentioned objectives, the present invention provides a high-temperature oil quenching immersion heat treatment experimental device, comprising an oil quenching test box, a fixture for clamping the sample is provided inside the oil quenching test box, a lifting element is provided on the oil quenching test box for driving the fixture to rise and fall in the oil quenching test box, a heating furnace for heating the sample is provided on one side of the oil quenching test box, a temperature data collector for detecting the sample temperature and displaying the real-time temperature of the sample is provided on the other side of the oil quenching test box, an image system for photographing and recording the oil quenching experiment phenomenon inside the oil quenching test box is provided outside the oil quenching test box, a cooling medium system is provided outside the oil quenching test box, the cooling medium system is used to transport and discharge quenching oil to the interior of the oil quenching test box, and an induced draft fan for discharging high-temperature mist inside the oil quenching test box is provided outside the oil quenching test box.

[0005] Preferably, the oil quenching test box includes a box body, a sealed observation window is provided on the lower side wall of the box body, a take-out port is provided on the upper part of the box body for convenient placement or removal of samples, and a sealed door is provided at the take-out port to close the take-out port.

[0006] Preferably, the fixture includes a mounting plate, the lifting element is sealed and fixedly connected to the box body of the oil quenching test box, the piston rod of the lifting element is located in the box body and fixedly connected to the mounting plate, two clamping jaws are symmetrically arranged below the mounting plate, the sample is placed on the clamping jaws, and a clamping structure for pressing the sample is arranged between the clamping jaws and the mounting plate.

[0007] Preferably, an adjustment hole is provided on the mounting plate, a connecting rod is provided on the top of the clamping jaw, the connecting rod is located in the adjustment hole and is slidably connected to the adjustment hole, and a nut is provided on the connecting rod to lock the connecting rod and the mounting plate.

[0008] Preferably, the clamping structure includes a clamping block, which is a U-shaped structure. A pull rod is provided on the top of the clamping block, which is slidingly connected to the mounting plate. A spring is provided on the outside of the pull rod, and the two ends of the spring are fixedly connected to the mounting plate and the clamping block respectively. A through hole is provided on the box body for the pull rod to pass through, and the pull rod is sealed and slidingly connected to the box body.

[0009] Preferably, the temperature data collector is connected to a thermocouple via a transmission line, and the thermocouple is fixed at a temperature measurement point of the sample.

[0010] Preferably, the imaging system includes a high-speed camera and a sheet laser emitter, both of which are arranged at the observation window of the box; the sheet laser emitter emits surface laser to the sample through the observation window to form a colored fluid area; the high-speed camera captures and records the oil quenching experimental phenomena of the sample in real time through the observation window.

[0011] Preferably, the induced draft fan is connected to the exhaust port provided on the upper part of the box body through an air duct.

[0012] Preferably, the cooling medium system includes an oil storage tank, which is connected to the oil discharge port provided at the lower part of the box body through an oil inlet pipe, and a cooler for cooling the quenching oil is provided on the oil inlet pipe. The oil storage tank is connected to the oil inlet provided in the middle part of the box body through an oil outlet pipe, and an oil pump is provided on the oil outlet pipe. Valves are provided at the oil inlet and oil discharge port of the box body.

[0013] The experimental method of the above-mentioned high-temperature oil quenching immersion heat treatment experimental device includes the following steps:

[0014] S1. Fix the thermocouple at the temperature measuring point of the sample by welding, place the sample in a heating furnace, heat the sample, detect the temperature of the sample in real time through the thermocouple, and display the real-time temperature on the temperature data collector;

[0015] S2. Adjust the distance between the two clamping jaws through the adjustment hole according to the size of the sample; adjust the height of the clamp through the lifting element and move the clamp to the access port; adjust the position of the high-speed camera and the laser transmitter;

[0016] S3. After the sample heating temperature reaches the set temperature and the holding time, the sample is taken out of the heating furnace; the pressing block is pulled upward by the pull rod, the spring is compressed, and the sample is placed on the clamping jaws through the access port. The pull rod is released, the spring is reset, and the pressing block is pressed against the top of the sample under the action of the spring, fixing the sample between the pressing block and the clamping jaws, and the airtight door is closed;

[0017] S4: Turn on the laser transmitter, high-speed camera, and induced draft fan. The lifting element drives the sample downward through the fixture and immerses the sample in the quenching oil in the box for oil quenching. The temperature of the sample is detected by a thermocouple, and the real-time temperature and temperature drop curve of the sample are displayed on the temperature data collector.

[0018] S5. When the sample temperature drops to the set temperature, the lifting element drives the sample upward through the fixture, the laser emitter and the high-speed camera are turned off, the induced draft fan is turned off after the high-temperature mist in the box is exhausted, and the sample is taken out of the box through the access port;

[0019] S6. Open the valves and oil pump at the oil inlet and oil drain port. The high-temperature quenching oil in the box enters the cooler through the oil drain port and oil inlet pipe for cooling, and then enters the oil storage tank. The normal-temperature oil in the oil storage tank enters the box through the oil outlet pipe and oil inlet port. After the quenching oil in the box is replaced, close the valves at the oil inlet and oil drain port to ensure the normal progress of the next experiment.

[0020] The advantages and positive effects of the high-temperature oil quenching immersion heat treatment experimental device and experimental method described in the present invention are:

[0021] 1. The present invention detects the real-time temperature of the sample through a thermocouple and observes the quenching state of the sample through a high-speed camera and a laser emitter, which is conducive to observing and analyzing the quenching state of the sample under different sample states and providing accurate data guidance for the industrial production of the sample.

[0022] 2. The present invention uses an oil storage tank and a cooler to replace the quenching oil in the oil quenching test box in a timely manner, which is beneficial to improving the operating efficiency of the quenching experiment and improving the research accuracy of the quenching experiment.

[0023] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0025] Figure 2 Schematic diagram of a top view of the structure of an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of an oil quenching test box according to an embodiment of the present invention;

[0027] Figure 4 Schematic diagram of the fixture structure according to an embodiment of the present invention;

[0028] Figure 5 A schematic diagram of the three-dimensional structure of a heating furnace according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the three-dimensional structure of a temperature data collector according to an embodiment of the present invention;

[0030] Figure 7 A schematic diagram of the three-dimensional structure of a cooling medium system according to an embodiment of the present invention;

[0031] Figure 8 Schematic diagram of the image system structure of the present invention.

[0032] Reference numerals

[0033] 1. Oil quenching test chamber; 11. Chamber; 12. Access opening; 13. Sealed door; 14. Observation window; 15. Lifting cylinder; 16. Pull rod; 17. Oil inlet; 18. Oil drain; 19. Exhaust port; 110. Mounting plate; 111. Gripping jaws; 112. Adjustment hole; 113. Clamping block; 114. Spring;

[0034] 2. Heating furnace; 3. Temperature data collector; 31. Transmission line; 4. Imaging system; 41. High-speed camera; 42. Laser emitter; 5. Induced draft fan; 51. Air duct; 6. Cooling medium system; 61. Oil storage tank; 62. Cooler; 63. Oil inlet pipe; 64. Oil outlet pipe; 65. Oil pump; 7. Test specimen. DETAILED DESCRIPTION

[0035] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the inventive product is usually placed when in use. These are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In this application, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. In the event of any inconsistency, the meaning described in this specification or the meaning derived from the contents recorded in this specification shall prevail. In addition, the terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0037] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] like Figure 1 、 Figure 2 As shown. A high-temperature oil quenching immersion heat treatment experimental device includes an oil quenching test box 1, which is provided with a fixture for clamping a sample 7. The oil quenching test box 1 is provided with a lifting element that drives the fixture to rise and fall within the oil quenching test box 1. The lifting element can be an electric lifting cylinder 15, a pneumatic cylinder, or an oil cylinder as needed. A heating furnace 2 for heating the sample 7 is provided on one side of the oil quenching test box 1. A temperature data collector 3 for detecting the temperature of the sample 7 and displaying the real-time temperature of the sample 7 is provided on the other side of the oil quenching test box 1. An imaging system 4 for capturing and recording the oil quenching test phenomena within the oil quenching test box 1 is provided on the outside of the oil quenching test box 1. A cooling medium system 6 is provided on the outside of the oil quenching test box 1. The cooling medium system 6 is used to transport and discharge quenching oil into the oil quenching test box 1 to maintain the temperature of the quenching oil within the oil quenching test box 1, which is conducive to ensuring the continuous and smooth progress of the quenching experiment and improving the quenching efficiency. An induced draft fan 5 is provided outside the oil quenching test box 1 for discharging high-temperature mist inside the oil quenching test box 1 , thereby reducing the influence of the high-temperature mist on the shooting effect of the imaging system 4 and improving the shooting effect.

[0039] like Figure 3The oil quenching test chamber 1 includes a housing 11, with sealed observation windows 14 provided on the lower sidewalls of the housing 11. Observation windows 14 are located on at least two sidewalls of the housing 11. The upper portion of the housing 11 is provided with an access opening 12 for convenient placement and removal of the specimen 7. A sealed door 13 is provided at the access opening 12 to seal the access opening 12. The sealed structure at the lower portion of the housing 11 facilitates the placement of quenching oil, while the upper access opening 12 facilitates the placement and removal of the specimen 7.

[0040] like Figure 4 As shown. The fixture includes a mounting plate 110, and the lifting element is sealed and fixedly connected to the box body 11 of the oil quenching test box 1 through a sealing ring. The piston rod of the lifting element is located in the box body 11 and is fixedly connected to the mounting plate 110. The lifting element drives the mounting plate 110 to rise and fall in the box body 11 through the piston rod, thereby driving the fixture to move up and down and immerse in or remove the quenching oil. Two clamping jaws 111 are symmetrically arranged below the mounting plate 110, and the clamping jaws 111 are L-shaped structures. The sample 7 is placed on the clamping jaws 111. An adjustment hole 112 is provided on the mounting plate 110, and a connecting rod is fixedly provided on the top of the clamping jaw 111. The connecting rod is located in the adjustment hole 112 and is slidably connected to the adjustment hole 112. The connecting rod is provided with an external thread, and a nut is provided on the connecting rod to lock the connecting rod and the mounting plate 110. The nut cooperates with the external thread to fix the clamping jaw 111 on the mounting plate 110, thereby improving the stability of the clamping of the sample 7. The adjustment hole 112 can adjust the distance between the two clamping jaws 111 to meet the clamping requirements of samples 7 of different lengths.

[0041] A clamping structure for clamping the sample 7 is provided between the clamping jaws 111 and the mounting plate 110. The clamping structure includes a clamping block 113, which is a U-shaped structure. A pull rod 16 is fixedly provided on the top of the clamping block 113, and the pull rod 16 is slidably connected to the mounting plate 110. A spring 114 is provided on the outside of the pull rod 16, and the two ends of the spring 114 are fixedly connected to the mounting plate 110 and the clamping block 113 respectively. The spring 114 provides a downward clamping force for the clamping block 113, so that the bottom end of the clamping block 113 is pressed against the sample 7, thereby improving the stability of the fixation of the sample 7. A through hole is provided on the box body 11 for the pull rod 16 to pass through, and the pull rod 16 is sealed and slidably connected to the box body 11 via a sealing ring. The clamping block 113 can be pulled upward by the pull rod 16 to increase the distance between the clamping block 113 and the clamping jaws 111, thereby facilitating the placement of the sample 7 on the clamping jaws 111.

[0042] like Figure 5 The heating furnace 2 is provided with a heating chamber, which can meet the heating requirements of the sample 7 at a maximum temperature of 1200°C.

[0043] like Figure 6As shown. The temperature data collector 3 is connected to the thermocouple through the transmission line 31, and the thermocouple is fixed at the temperature measuring point of the sample 7. The thermocouple is fixed at the temperature measuring point of the sample 7 by welding, directly measuring the temperature of the sample 7 and observing the temperature change curve of the sample 7, which is beneficial to improving the accuracy of the quenching experiment of the sample 7. The transmission line 31 is a high-temperature resistant transmission line 31. Since the diameter of the line is relatively small, it can pass directly through the closed door 13 of the heating furnace 2 or the box 11 without affecting the normal use of the heating furnace 2 and the oil quenching test box 1. The temperature data collector 3 is used to display and record the real-time temperature of the sample 7.

[0044] like Figure 8 As shown, imaging system 4 includes a high-speed camera 41 and a sheet laser emitter 42, both of which are positioned near observation window 14 of housing 11. Sheet laser emitter 42 emits a surface laser beam toward specimen 7 through observation window 14, creating a colored fluid region that facilitates the high-speed camera 41's capture of the oil quenching phenomenon. High-speed camera 41 captures and records the oil quenching experimental phenomena of specimen 7 in real time through observation window 14.

[0045] The induced draft fan 5 is connected to the exhaust port 19 provided on the upper part of the box body 11 through the air duct 51. The induced draft fan 5 discharges the high-temperature mist generated during the oil quenching process in the box body 11 out of the box body 11, reducing the impact of the high-temperature mist on the shooting of the quenching phenomenon and improving the clarity of the shooting.

[0046] like Figure 7 As shown. The cooling medium system 6 includes an oil storage tank 61, which is used to store quenching oil. The oil storage tank 61 is connected to the oil discharge port 18 provided at the lower part of the housing 11 through an oil inlet pipe 63. A cooler 62 for cooling the quenching oil is provided on the oil inlet pipe 63. The cooler 62 cools the quenching oil returned from the housing 11 to the oil storage tank 61, effectively reducing the temperature of the quenching oil. A filter can be provided on the oil inlet pipe 63 to filter the quenching oil entering the oil storage tank 61 to ensure the purity of the quenching oil. The oil storage tank 61 is connected to the oil inlet 17 provided in the middle part of the housing 11 through an oil outlet pipe 64. An oil pump 65 is provided on the oil outlet pipe 64. The oil pump 65 delivers the quenching oil in the oil storage tank 61 into the housing 11. Valves are provided at the oil inlet 17 and the oil outlet 18 of the box body 11. The valves can be mechanical valves or electromagnetic valves, which connect or disconnect the oil storage tank 61 with the box body 11 to ensure the stability of the quenching oil in the box body 11 during the quenching test and improve the accuracy of the quenching test.

[0047] The outlet of the oil inlet pipe 63 is located below the oil tank 61, and delivers the high-temperature quenching oil to the bottom of the oil tank 61. The inlet of the oil outlet pipe 64 is located above the oil tank 61, allowing the low-temperature quenching oil inside the oil tank 61 to be delivered into the housing 11, effectively reducing the temperature of the quenching oil entering the housing 11, ensuring the smooth progress of the next quenching experiment, and helping to improve the efficiency of the quenching experiment.

[0048] The experimental method of the above-mentioned high-temperature oil quenching immersion heat treatment experimental device includes the following steps:

[0049] S1. Weld a thermocouple to the temperature measurement point of sample 7, place sample 7 in heating furnace 2, and heat sample 7. The thermocouple measures the temperature of sample 7 in real time, and displays the real-time temperature on temperature data collector 3. Set the heating temperature and heating rate of heating furnace 2 based on the desired heating temperature and heating rate of sample 7.

[0050] S2. According to the size of the sample 7, adjust the distance between the two clamping jaws 111 through the adjustment hole 112; adjust the height of the clamp through the lifting element and move the clamp to the pick-up and drop-out port 12; adjust the position of the high-speed camera 41 and the sheet laser emitter 42.

[0051] S3. After the heating temperature of sample 7 reaches the set temperature and the holding time, remove sample 7 from heating furnace 2. Pull the clamping block 113 upward via the pull rod 16, compressing the spring 114 and placing the sample 7 through the access opening 12 and onto the clamping jaw 111. Release the pull rod 16, and the spring 114 returns to its original position. The clamping block 113, under the action of the spring 114, presses against the top of the sample 7, securing the sample 7 between the clamping block 113 and the clamping jaw 111. Close the airtight door 13.

[0052] S4, open the laser emitter 42, high-speed camera 41, and induced draft fan 5. The lifting element drives the sample 7 downward through the fixture, immersing the sample 7 in the quenching oil in the box 11 for oil quenching. The temperature of the sample 7 is detected by a thermocouple, and the real-time temperature and temperature drop curve of the sample 7 are displayed on the temperature data collector 3.

[0053] S5. When the temperature of sample 7 drops to the set temperature, the lifting element moves the sample 7 upward through the fixture, and the laser emitter 42 and high-speed camera 41 are turned off. After the high-temperature mist in the box 11 is exhausted, the induced draft fan 5 is turned off, and the sample 7 is removed from the box 11 through the access port 12.

[0054] S6. Open the valves at the oil inlet 17 and oil outlet 18 and the oil pump 65. The high-temperature quenching oil in the housing 11 flows through the oil outlet 18 and the oil inlet pipe 63 into the cooler 62 for cooling, and then into the oil reservoir 61. The ambient-temperature oil in the oil reservoir 61 flows through the oil outlet pipe 64 and the oil inlet 17 into the housing 11. After the quenching oil in the housing 11 is replaced, close the valves at the oil inlet 17 and the oil outlet 18 to ensure the next experiment can proceed normally.

[0055] Therefore, the high-temperature oil quenching immersion heat treatment experimental device and experimental method described in the present invention are used to observe and analyze the quenching state of samples under different sample conditions, provide accurate data guidance for the industrial production of samples, and improve the operational efficiency and research accuracy of the quenching experiment.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solutions of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A high-temperature oil quenching immersion heat treatment experimental device, characterized by: It includes an oil quenching test box, which is equipped with a fixture for clamping the sample inside the oil quenching test box, and a lifting element for driving the fixture to rise and fall in the oil quenching test box. A heating furnace for heating the sample is provided on one side of the oil quenching test box, and a temperature data collector for detecting the sample temperature and displaying the real-time temperature of the sample is provided on the other side of the oil quenching test box. An image system for photographing and recording the oil quenching test phenomenon inside the oil quenching test box is provided outside the oil quenching test box. A cooling medium system is provided outside the oil quenching test box, and the cooling medium system is used to transport and discharge quenching oil to and from the interior of the oil quenching test box. An induced draft fan for discharging high-temperature mist inside the oil quenching test box is provided outside the oil quenching test box.

2. A high-temperature oil quenching immersion heat treatment experimental device according to claim 1, characterized in that: The oil quenching test box includes a box body, a sealed observation window is provided on the lower side wall of the box body, a take-out port is provided on the upper part of the box body for convenient placement or removal of samples, and a sealed door is provided at the take-out port to close the take-out port.

3. The high-temperature oil quenching immersion heat treatment experimental device according to claim 1, characterized in that: The fixture includes a mounting plate, a lifting element sealed and fixedly connected to the box body of the oil quenching test box, a piston rod of the lifting element is located in the box body and fixedly connected to the mounting plate, two clamping jaws are symmetrically arranged below the mounting plate, the sample is placed on the clamping jaws, and a clamping structure for pressing the sample is arranged between the clamping jaws and the mounting plate.

4. The high-temperature oil quenching immersion heat treatment experimental device according to claim 3, characterized in that: An adjustment hole is provided on the mounting plate, and a connecting rod is provided on the top of the clamping jaw. The connecting rod is located in the adjustment hole and is slidably connected to the adjustment hole. A nut is provided on the connecting rod for locking the connecting rod and the mounting plate.

5. The high-temperature oil quenching immersion heat treatment experimental device according to claim 3, characterized in that: The clamping structure includes a clamping block, which is a U-shaped structure. A pull rod is provided on the top of the clamping block. The pull rod is slidably connected to the mounting plate. A spring is provided on the outside of the pull rod. The two ends of the spring are respectively fixedly connected to the mounting plate and the clamping block. A through hole is provided on the box body for the pull rod to pass through. The pull rod is sealed and slidably connected to the box body.

6. The high-temperature oil quenching immersion heat treatment experimental device according to claim 1, characterized in that: The temperature data collector is connected to a thermocouple via a transmission line, and the thermocouple is fixed at a temperature measuring point of the sample.

7. The high-temperature oil quenching immersion heat treatment experimental device according to claim 2, characterized in that: The imaging system includes a high-speed camera and a sheet laser emitter, both of which are arranged at the observation window of the box; the sheet laser emitter emits surface laser to the sample through the observation window to form a colored fluid area; the high-speed camera captures and records the oil quenching experimental phenomena of the sample in real time through the observation window.

8. The high-temperature oil quenching immersion heat treatment experimental device according to claim 2, characterized in that: The induced draft fan is connected to the exhaust port arranged on the upper part of the box body through an air duct.

9. The high-temperature oil quenching immersion heat treatment experimental device according to claim 2, characterized in that: The cooling medium system includes an oil storage tank, which is connected to the oil discharge port provided at the lower part of the box body through an oil inlet pipe, and a cooler for cooling the quenching oil is provided on the oil inlet pipe. The oil storage tank is connected to the oil inlet provided in the middle part of the box body through an oil outlet pipe, and an oil pump is provided on the oil outlet pipe. Valves are provided at the oil inlet and oil discharge port of the box body.

10. An experimental method based on a high-temperature oil quenching immersion heat treatment experimental device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Fix the thermocouple at the temperature measuring point of the sample by welding, place the sample in a heating furnace, heat the sample, detect the temperature of the sample in real time through the thermocouple, and display the real-time temperature on the temperature data collector; S2. Adjust the distance between the two clamping jaws through the adjustment hole according to the size of the sample; adjust the height of the clamp through the lifting element and move the clamp to the access port; adjust the position of the high-speed camera and the laser transmitter; S3. After the sample heating temperature reaches the set temperature and the holding time, the sample is taken out of the heating furnace; the pressing block is pulled upward by the pull rod, the spring is compressed, and the sample is placed on the clamping jaws through the access port. The pull rod is released, the spring is reset, and the pressing block is pressed against the top of the sample under the action of the spring, fixing the sample between the pressing block and the clamping jaws, and the airtight door is closed; S4: Turn on the laser transmitter, high-speed camera, and induced draft fan. The lifting element drives the sample downward through the fixture and immerses the sample in the quenching oil in the box for oil quenching. The temperature of the sample is detected by a thermocouple, and the real-time temperature and temperature drop curve of the sample are displayed on the temperature data collector. S5. When the sample temperature drops to the set temperature, the lifting element drives the sample upward through the fixture, the laser emitter and the high-speed camera are turned off, the induced draft fan is turned off after the high-temperature mist in the box is exhausted, and the sample is taken out of the box through the access port; S6. Open the valves and oil pump at the oil inlet and oil drain port. The high-temperature quenching oil in the box enters the cooler through the oil drain port and oil inlet pipe for cooling, and then enters the oil storage tank. The normal-temperature oil in the oil storage tank enters the box through the oil outlet pipe and oil inlet port. After the quenching oil in the box is replaced, close the valves at the oil inlet and oil drain port to ensure the normal progress of the next experiment.

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