An experimental simulation device for quenching and hot forming of ultra-high strength hot-formed steel

Abstract

This invention discloses an experimental simulation device for quenching and hot forming of ultra-high strength hot-formable steel, comprising: an experimental platform, a quenching experimental machine body, a first clamping mechanism, a second clamping mechanism, a tensile mechanism, a first driving mechanism, a spray quenching mechanism, and two induction heating coils; the quenching experimental machine body is located on top of the experimental platform; an experimental cavity is provided inside the quenching experimental machine body; the first clamping mechanism is connected to the driving end of the tensile mechanism; the two induction heating coils and the spray quenching mechanism are all located between the first and second clamping mechanisms. This invention drives the two induction heating coils to move in opposite directions through the first driving mechanism, separating the two induction heating coils, and sprays quenching medium onto the test area of ​​the sample through the spray quenching mechanism. This avoids directly spraying the quenching medium onto the induction heating coils, thereby reducing the risk of damage to the induction heating coils, extending their service life, and reducing experimental costs.

Description

Technical Field

[0001] This invention relates to the field of heat treatment technology for metallic materials, and more specifically to an experimental simulation device for quenching and hot forming of ultra-high strength hot-formed steel. Background Technology

[0002] Ultra-high strength hot-formed steel, due to its extremely high strength and good formability achieved through rapid quenching after high-temperature austenitization, is widely used in the manufacture of lightweight and safety structural components in the automotive and aerospace industries. In the development of hot-formed steel, flat die quenching experiments are commonly used to simulate the hot-forming process, followed by research on the various properties of the quenched hot-formed parts. Currently, flat die quenching experiments and direct water quenching experiments are commonly used to simulate the hot-forming process, and then to study the mechanical properties, extreme cold bending performance, hydrogen embrittlement resistance, and fatigue performance of the quenched hot-formed steel. Flat die quenching requires a complete experimental platform, including a dedicated hydraulic press, a dedicated heating furnace, and a water-permeable mold, which suffers from high experimental costs, fragmented equipment functions, and low efficiency. Direct water quenching has an excessively high cooling rate, which can cause significant stress deformation in the sample, making sampling difficult. Furthermore, direct water quenching allows hydrogen to penetrate the sample, making the quenched sample prone to brittle fracture.

[0003] Based on the aforementioned industry situation, there is a need to design a simulated hot forming test method that can solve the problems of the above-mentioned experimental methods for simulating the quenching process of hot-formed steel, while improving experimental efficiency and saving costs. Extensive research has been conducted in this industry. Chinese invention patent CN120006071A discloses a quenching experimental device for hot-formed steel, including an experimental platform and a tensile quenching mechanism. The tensile quenching mechanism includes an induction heating coil, a sample, a left clamping mechanism, a right clamping mechanism, a tensile mechanism, and a sample cooling device. The induction heating coil is horizontally fixed on the experimental platform. The sample passes through the induction heating coil, and both ends of the sample are clamped by the left and right clamping mechanisms respectively. A temperature measuring device is provided on the sample. The left clamping mechanism is fixed on the experimental platform, the right clamping mechanism is connected to the tensile mechanism, and the sample cooling device is installed on the side of the sample. This invention utilizes a tensile quenching mechanism to control the heating and tensile processes of the sample, while precisely controlling the cooling rate. This not only offers low cost and high experimental efficiency but also maximizes the simulation of the hot-formed steel parts processing, ensuring the quenching process curve and mechanical properties of the steel plate sample, thus providing effective data support for parts production. However, the biggest drawback of the aforementioned patented experimental device is that during sample cooling, the sample cooling device directly sprays liquid nitrogen onto the induction heating coil, significantly shortening the coil's lifespan and increasing experimental costs. Therefore, providing a simulation device for the quenching and hot forming of ultra-high-strength hot-formed steel that can reduce experimental costs is one of the urgent technical problems to be solved in this field. Summary of the Invention

[0004] In view of this, the present invention provides an experimental simulation device for quenching and hot forming of ultra-high strength hot-formed steel, the purpose of which is to solve the problems existing in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An experimental simulation device for quenching and hot forming of ultra-high strength hot-formable steel includes: an experimental platform, a quenching experimental machine body, a first clamping mechanism, a second clamping mechanism, a tensile mechanism, a first driving mechanism, a spray quenching mechanism for spraying quenching medium onto the sample, and two induction heating coils; the quenching experimental machine body is located on top of the experimental platform; an experimental cavity is provided inside the quenching experimental machine body; the first clamping mechanism and the second clamping mechanism are arranged opposite to each other in the experimental cavity for clamping both ends of the sample; the first clamping mechanism is connected to the driving end of the tensile mechanism; the two induction heating coils and the spray quenching mechanism are all arranged between the first clamping mechanism and the second clamping mechanism; the induction heating coils are sleeved on the outside of the sample; the first driving mechanism is located in the experimental cavity for driving the two induction heating coils to move towards or away from each other.

[0007] Preferably, the first clamping mechanism includes a connecting frame, a first mounting plate, a first hydraulic cylinder, a push plate, two first wedge blocks, two second wedge blocks adapted to the first wedge blocks, two connecting rods, and two clamping plates; the first mounting plate is disposed on the connecting frame near the induction heating coil; the first hydraulic cylinder is disposed on the connecting frame; the push plate is disposed on the driving end of the first hydraulic cylinder; a clamping groove is formed in the middle of the first mounting plate; the two clamping plates are symmetrically disposed in the clamping groove; the connecting rod is disposed on the opposite side of the two clamping plates; the second wedge block is disposed on the side of the connecting rod away from the clamping plate; the two first wedge blocks are disposed on the side of the push plate near the first mounting plate; the first wedge blocks and the second wedge blocks are disposed in a one-to-one correspondence.

[0008] Preferably, the first mounting plate has a first guide groove on both its upper and lower parts; the first wedge block and the second wedge block are slidably connected in the corresponding first guide groove; a second guide groove is provided between the first guide groove and the clamping groove; the connecting rod is slidably connected in the second guide groove.

[0009] Preferably, the stretching mechanism includes a second hydraulic cylinder; the second hydraulic cylinder is disposed inside the experimental chamber; the drive end of the second hydraulic cylinder is connected to the side of the connecting frame away from the first mounting plate.

[0010] Preferably, the second clamping mechanism has the same structure as the first clamping mechanism; the connecting frame of the second clamping mechanism is fixedly connected to the inner wall of the experimental chamber.

[0011] Preferably, the first driving mechanism includes a first motor, a first bidirectional lead screw, and two first driving blocks; a fixed seat is provided on the bottom wall of the experimental chamber; a U-shaped mounting bracket is provided on one side of the fixed seat; the first motor is disposed on one side of the U-shaped mounting bracket; one end of the first bidirectional lead screw is connected to the driving end of the first motor, and the other end of the first bidirectional lead screw is rotatably connected to the other side of the U-shaped mounting bracket; the two first driving blocks are respectively disposed at both ends of the first bidirectional lead screw; one end of each of the two induction heating coils is respectively connected to the two first driving blocks.

[0012] Preferably, a first mounting groove is provided on one side of the fixed base; the U-shaped mounting bracket is slidably connected in the first mounting groove; a third hydraulic cylinder is provided in the first mounting groove; the drive end of the third hydraulic cylinder is connected to the U-shaped mounting bracket.

[0013] Preferably, a fourth hydraulic cylinder is provided above and below the induction heating coil; the driving end of the fourth hydraulic cylinder is provided with a pressure head.

[0014] Preferably, the jet quenching mechanism includes an annular tube and nozzles; an annular tube is sleeved on the outside of each pressure head; multiple nozzles are provided on the annular tube; and the nozzles on two annular tubes are staggered.

[0015] Preferably, a protective cover is provided on the outside of the experimental chamber; the protective cover is slidably connected to the experimental platform.

[0016] The present invention achieves the following technical effects compared to the prior art:

[0017] 1) The present invention drives two induction heating coils to move in opposite directions through a first driving mechanism, thereby separating the two induction heating coils. The quenching medium is sprayed onto the test area of ​​the sample through a spray quenching mechanism. This avoids spraying the quenching medium directly onto the induction heating coils, thereby reducing the risk of damage to the induction heating coils, extending the service life of the induction heating coils, and reducing experimental costs.

[0018] 2) The present invention, through the cooperation of the first driving mechanism and the third hydraulic cylinder, can control the two induction heating coils to move to one side of the experimental chamber after they approach each other, which facilitates the assembly and disassembly of the sample. This not only improves the ease of operation, but also avoids damage such as bending to the sample during the sample handling process, which would affect the accuracy of the experimental results.

[0019] 3) By setting a fourth hydraulic cylinder and a pressure head, the present invention can perform extrusion deformation experiments on the sample. At the same time, by setting a cooling channel inside the pressure head, when quenching is required, the sample can be cooled by directly spraying quenching medium onto it using a jet quenching mechanism, or the sample can be cooled by passing a cooling medium through the cooling channel inside the pressure head, so as to simulate different quenching environments and improve the applicability of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing the results of an experimental simulation device for quenching and hot forming of ultra-high strength hot-formed steel according to the present invention.

[0021] Figure 2 This is a schematic diagram of the internal structure of the experimental chamber;

[0022] Figure 3 for Figure 2 A magnified view of part A in the middle;

[0023] In the diagram: 1. Experimental table; 2. Main body of the quenching experimental machine; 3. Induction heating coil; 4. Experimental chamber; 5. Sample; 6. Connecting frame; 7. First mounting plate; 8. First hydraulic cylinder; 9. Push plate; 10. First wedge block; 11. Second wedge block; 12. Connecting rod; 13. Clamping plate; 14. Clamping groove; 15. First guide groove; 16. Second guide groove; 17. Second hydraulic cylinder; 18. First motor; 19. First bidirectional lead screw; 20. First drive block; 21. Fixed base; 22. U-shaped mounting bracket; 23. First mounting slot; 24. Third hydraulic cylinder; 25. Fourth hydraulic cylinder; 26. Pressure head; 27. Annular tube; 28. Nozzle; 29. ​​Protective cover; 30. Third guide slot; 31. Spring; 32. First slider; 33. Guide rod; 34. Limiting block; 35. Connecting plate; 36. Second mounting slot; 37. Second motor; 38. First lead screw; 39. Second drive block; 40. Drive plate; 41. Crossbeam. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example

[0026] Reference Figure 1-3As shown, this invention discloses an experimental simulation device for quenching and hot forming of ultra-high strength hot-formed steel, comprising: an experimental platform 1, a quenching experimental machine body 2, a first clamping mechanism, a second clamping mechanism, a tensile mechanism, a first driving mechanism, a spray quenching mechanism for spraying quenching medium onto the sample 5, and two induction heating coils 3; the quenching experimental machine body 2 is disposed on top of the experimental platform 1; an experimental cavity 4 is provided inside the quenching experimental machine body 2; the first clamping mechanism and the second clamping mechanism are respectively disposed on the left and right sides of the experimental cavity 4, and are arranged opposite to each other to clamp both ends of the sample 5 and fix the sample; the first clamping mechanism is connected to the driving end of the tensile mechanism; the two induction heating coils 3 and the spray quenching mechanism are disposed between the first clamping mechanism and the second clamping mechanism; the induction heating coils 3 are sleeved on the outside of the sample 5. The first driving mechanism is located inside the experimental chamber 4 and is used to drive the two induction heating coils 3 to move towards or away from each other. In use, the sample 5 is first passed through the two induction heating coils 3, and the two ends of the sample 5 are clamped and fixed on the first clamping mechanism and the second clamping mechanism, respectively. Then, the sample 5 is heated by the two induction heating coils 3. Then, the first clamping mechanism is driven by the stretching mechanism to perform a stretching test on the sample. When cooling is required, the two induction heating coils 3 are driven to move away from each other by the first driving mechanism to separate the two induction heating coils 3. Then, the quenching medium is sprayed onto the test area of ​​the sample 5 by the spray quenching mechanism to avoid spraying the quenching medium directly onto the induction heating coils 3. After the experiment, the sample 5 is removed from the first clamping mechanism and the second clamping mechanism to complete the quenching thermoforming simulation experiment.

[0027] The above technical solution drives two induction heating coils to move in opposite directions through the first driving mechanism, so that the two induction heating coils are separated. The quenching medium is sprayed onto the test area of ​​the sample through the spray quenching mechanism. This can avoid spraying the quenching medium directly onto the induction heating coils, thereby reducing the risk of damage to the induction heating coils, extending the service life of the induction heating coils, and reducing the experimental cost.

[0028] In this embodiment, the first clamping mechanism includes a connecting frame 6, a first mounting plate 7, a first hydraulic cylinder 8, a push plate 9, two first wedge blocks 10, two second wedge blocks 11 adapted to the first wedge blocks 10, two connecting rods 12, and two clamping plates 13. The first mounting plate 7 is disposed on the side of the connecting frame 6 near the induction heating coil 3. The first hydraulic cylinder 8 is disposed on the connecting frame 6. The push plate 9 is disposed on the driving end of the first hydraulic cylinder 8. A clamping groove 14 is provided in the middle of the first mounting plate 7. The two clamping plates 13 are symmetrically disposed in the clamping groove 14. A connecting rod 12 is provided on the opposite side of the two clamping plates 13. A second wedge block 11 is provided on the side of the connecting rod 12 away from the clamping plate 13. The two first wedge blocks 10 are disposed on the side of the push plate 9 near the first mounting plate 7. The first wedge blocks 10 and the second wedge blocks 11 are disposed in a one-to-one correspondence. The first wedge blocks 10 and the second wedge blocks 11 cooperate with each other. The first wedge blocks 10 are located on the side of the induction heating coil 3. The thickness of the first wedge 10 is less than the thickness on the side away from the induction heating coil 3; the thickness of the second wedge 11 on the side closer to the induction heating coil 3 is greater than the thickness on the side away from the induction heating coil 3; the first wedge 10, the second wedge 11 and the connecting rod 12 are all slidably connected in the first mounting plate 7; in use, firstly, the end of the sample 5 is placed in the clamping groove 14, so that the sample 5 is located between the two clamping plates 13, and then the first hydraulic cylinder 8 pushes the push plate 9 to move closer to the first mounting plate 7, the push plate 9 drives the first wedge 10 to move, the first wedge 10 pushes the second wedge 11 to move closer to the center of the first mounting plate 7, and the second wedge 11 drives the clamping plate 13 to move closer to the center of the first mounting plate 7 through the connecting rod 12, and the sample 5 is clamped and fixed by the two clamping plates 13. When it is necessary to remove the sample 5, the hydraulic cylinder 8 pushes the push plate 9 away from the first mounting plate 7, and the sample 5 can be released and removed.

[0029] In this embodiment, the first mounting plate 7 has a first guide groove 15 on both the upper and lower parts; the first wedge block 10 and the second wedge block 11 are slidably connected in the corresponding first guide groove 15; a second guide groove 16 is provided between the first guide groove 15 and the clamping groove 14; the connecting rod 12 is slidably connected in the second guide groove 16.

[0030] In this embodiment, a third guide groove 30 is provided on the side of the second guide groove 16 away from the clamping groove 14; a spring 31 is provided in the third guide groove 30; one end of the spring 31 abuts against the side of the second wedge block 11 near the connecting rod 12, and the other end of the spring 31 abuts against the inner wall of the third guide groove 30; during the clamping process of the sample, the spring 31 is compressed, and when the sample is released, the two clamping plates 13 quickly return to their original positions under the action of the spring 31, which facilitates the clamping of the sample next time.

[0031] In this embodiment, the stretching mechanism includes a second hydraulic cylinder 17; the second hydraulic cylinder 17 is embedded in the inner wall of the left side of the experimental chamber 4; the drive end of the second hydraulic cylinder 17 is connected to the side of the connecting frame 6 away from the first mounting plate 7; in use, the first clamping mechanism is moved by the second hydraulic cylinder 17.

[0032] In this embodiment, the second clamping mechanism has the same structure as the first clamping mechanism; the connecting frame 6 of the second clamping mechanism is fixedly connected to the inner wall of the experimental chamber 4.

[0033] In this embodiment, the first driving mechanism includes a first motor 18, a first bidirectional lead screw 19, and two first driving blocks 20; a fixed seat 21 is provided on the bottom wall of the experimental chamber 4; a U-shaped mounting bracket 22 is provided on one side of the fixed seat 21; the first motor 18 is located on one side of the U-shaped mounting bracket 22; one end of the first bidirectional lead screw 19 is connected to the driving end of the first motor 18, and the other end of the first bidirectional lead screw 19 is rotatably connected to the other side of the U-shaped mounting bracket 22; the two first driving blocks 20 are respectively connected to the two ends of the first bidirectional lead screw 19 by lead screw nuts and bolts; one end of each of the two induction heating coils 3 is respectively connected to the two first driving blocks 20; in use, the first motor 18 drives the first bidirectional lead screw 19 to rotate, the first bidirectional lead screw 19 drives the two first driving blocks 20 to move towards or away from each other, and the two first driving blocks 20 drive the two induction heating coils 3 to move towards or away from each other.

[0034] In this embodiment, the two ends of the induction heating coil 3 are located on the front and rear sides of the induction heating coil 3, respectively; a second mounting plate is provided at both ends of the induction heating coil 3; the second mounting plate is slidably connected to the top of the fixed base 21; one second mounting plate is fixedly connected to the corresponding first driving block 20 through the connecting plate 35.

[0035] In this embodiment, a first mounting groove 23 is provided on the front side of the fixed base 21; a U-shaped mounting bracket 22 is slidably connected in the first mounting groove 23; a third hydraulic cylinder 24 is provided in the first mounting groove 23; the drive end of the third hydraulic cylinder 24 is connected to the U-shaped mounting bracket 22; when it is necessary to remove the sample 5, firstly, the two induction heating coils 3 are brought closer together by the first drive mechanism, then the U-shaped mounting bracket 22 is moved away from the first clamping mechanism by the third hydraulic cylinder 24, and then the first clamping mechanism is moved to the left by the second hydraulic cylinder 17, so that the first clamping mechanism is moved away from the second clamping mechanism, and finally the first clamping mechanism and the second clamping mechanism are controlled to release the sample, so that the sample can be easily removed.

[0036] In this embodiment, a fourth hydraulic cylinder 25 is provided above and below the induction heating coil 3; the driving end of the fourth hydraulic cylinder 25 is provided with a pressure head 26; in use, the sample 5 is first heated by the induction heating coil 3, and then the two induction heating coils 3 are driven to move in opposite directions by the first driving mechanism to separate the two induction heating coils 3. Then, the two fourth hydraulic cylinders 25 drive the two pressure heads 26 to move closer to each other to squeeze the sample 5 and complete the extrusion molding experiment.

[0037] In this embodiment, the spray quenching mechanism includes an annular tube 27 and nozzles 28; an annular tube 27 is sleeved on the outside of each pressure head 26; multiple nozzles 28 are provided on the annular tube 27; the nozzles 28 on the two annular tubes 27 are staggered; in use, liquid nitrogen is sprayed onto the sample surface through the nozzles 28 for cooling and quenching.

[0038] In this embodiment, liquid nitrogen is used as the quenching medium in the jet quenching mechanism.

[0039] In this embodiment, the pressure head 26 is provided with a cooling channel; the sample can be cooled by introducing coolant into the cooling channel; when quenching is required, the sample can be cooled by directly spraying quenching medium onto the sample using a jet quenching mechanism, or the sample can be cooled by introducing cooling medium into the cooling channel inside the pressure head.

[0040] In this embodiment, a protective cover 29 is provided on the outside of the experimental chamber 4; the protective cover 29 is slidably connected to the experimental table 1.

[0041] In this embodiment, a second mounting slot 36 is provided on the front side of the upper part of the experimental platform 1; a second motor 37 is provided inside the second mounting slot 36; a first lead screw 38 is provided at the drive end of the second motor 37; a second drive block 39 is threadedly connected to the first lead screw 38; the second drive block 39 is connected to the protective cover through the drive plate 40; in use, the second motor 37 drives the first lead screw 38 to rotate, the first lead screw 38 drives the second drive block 39 to move left and right, and the second drive block 39 drives the protective cover to move left and right through the drive plate 40, so as to facilitate opening or closing the experimental chamber.

[0042] In this embodiment, the bottom of the first mounting plate 7 of the first clamping mechanism is provided with a first sliding groove; the top of the fixed base 21 is provided with a first slider 32 that is adapted to the first sliding groove; the first mounting plate 7 is slidably connected to the top of the fixed base 21 through the cooperation of the first sliding groove and the first slider 32.

[0043] In this embodiment, a guide hole is provided on the upper part of the first mounting plate 7 of the first clamping mechanism; a guide rod 33 is inserted through the guide hole; one end of the guide rod 33 is fixedly connected to the inner wall of the left side of the experimental chamber 4.

[0044] In this embodiment, a limiting block 34 is provided at one end of the guide rod 33 near the induction heating coil 3.

[0045] In this embodiment, a crossbeam 41 is provided on the upper part of the experimental chamber 4; the two ends of the crossbeam 41 are fixedly connected to the inner walls of the left and right sides of the experimental chamber 4 respectively; the fourth hydraulic cylinder 25 located above the induction heating coil 3 is fixedly connected to the crossbeam 41; the fourth hydraulic cylinder 25 located below the induction heating coil 3 is embedded in the fixed seat 21.

[0046] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A simulation device for quenching and hot forming experiments of ultra-high strength hot-formable steel, characterized in that, include: The test bench (1), the main body of the quenching test machine (2), the first clamping mechanism, the second clamping mechanism, the tensile mechanism, the first driving mechanism, the spray quenching mechanism for spraying quenching medium onto the sample (5), and two induction heating coils (3); the main body of the quenching test machine (2) is located on the top of the test bench (1); the main body of the quenching test machine (2) is provided with an experimental cavity (4); the first clamping mechanism and the second clamping mechanism are arranged opposite to each other in the experimental cavity (4) for clamping both ends of the sample (5); the first clamping mechanism is connected to the driving end of the tensile mechanism; the two induction heating coils (3) and the spray quenching mechanism are both arranged between the first clamping mechanism and the second clamping mechanism; the induction heating coils (3) are sleeved on the outside of the sample (5); the first driving mechanism is located in the experimental cavity (4) for driving the two induction heating coils (3) to move towards or away from each other; The first clamping mechanism includes a connecting frame (6), a first mounting plate (7), a first hydraulic cylinder (8), a push plate (9), two first wedge blocks (10), two second wedge blocks (11) adapted to the first wedge blocks (10), two connecting rods (12), and two clamping plates (13); the first mounting plate (7) is disposed on the side of the connecting frame (6) near the induction heating coil (3); the first hydraulic cylinder (8) is disposed on the connecting frame (6); the push plate (9) is disposed on the driving end of the first hydraulic cylinder (8). The first mounting plate (7) has a clamping groove (14) in the middle; two clamping plates (13) are symmetrically arranged in the clamping groove (14); the two clamping plates (13) are provided with connecting rods (12) on opposite sides; the connecting rods (12) are provided with second wedge blocks (11) on the side away from the clamping plates (13); two first wedge blocks (10) are provided on the side of the push plate (9) near the first mounting plate (7); the first wedge blocks (10) and the second wedge blocks (11) are provided in a one-to-one correspondence. The first mounting plate (7) has a first guide groove (15) on both the upper and lower parts; the first wedge block (10) and the second wedge block (11) are slidably connected in the corresponding first guide groove (15); a second guide groove (16) is provided between the first guide groove (15) and the clamping groove (14); the connecting rod (12) is slidably connected in the second guide groove (16).

2. The experimental simulation device for quenching and hot forming of ultra-high strength hot-formed steel according to claim 1, characterized in that, The stretching mechanism includes a second hydraulic cylinder (17); the second hydraulic cylinder (17) is disposed in the experimental chamber (4); the drive end of the second hydraulic cylinder (17) is connected to the side of the connecting frame (6) away from the first mounting plate (7).

3. The experimental simulation device for quenching and hot forming of ultra-high strength hot-formed steel according to claim 1, characterized in that, The second clamping mechanism has the same structure as the first clamping mechanism; the connecting frame (6) of the second clamping mechanism is fixedly connected to the inner wall of the experimental chamber (4).

4. The experimental simulation device for quenching and hot forming of ultra-high strength hot-formed steel according to claim 1, characterized in that, The first driving mechanism includes a first motor (18), a first bidirectional lead screw (19), and two first driving blocks (20); a fixed seat (21) is provided on the bottom wall of the experimental chamber (4); a U-shaped mounting bracket (22) is provided on one side of the fixed seat (21); the first motor (18) is located on one side of the U-shaped mounting bracket (22); one end of the first bidirectional lead screw (19) is connected to the driving end of the first motor (18), and the other end of the first bidirectional lead screw (19) is rotatably connected to the other side of the U-shaped mounting bracket (22); the two first driving blocks (20) are respectively located at both ends of the first bidirectional lead screw (19); one end of the two induction heating coils (3) is respectively connected to the two first driving blocks (20).

5. The experimental simulation device for quenching and hot forming of ultra-high strength hot-formed steel according to claim 4, characterized in that, The fixed base (21) has a first mounting groove (23) on one side; the U-shaped mounting bracket (22) is slidably connected in the first mounting groove (23); the first mounting groove (23) is provided with a third hydraulic cylinder (24); the driving end of the third hydraulic cylinder (24) is connected to the U-shaped mounting bracket (22).

6. The experimental simulation device for quenching and hot forming of ultra-high strength hot-formed steel according to claim 1, characterized in that, A fourth hydraulic cylinder (25) is provided above and below the induction heating coil (3); the driving end of the fourth hydraulic cylinder (25) is provided with a pressure head (26).

7. The experimental simulation device for quenching and hot forming of ultra-high strength hot-formed steel according to claim 6, characterized in that, The jet quenching mechanism includes an annular tube (27) and nozzles (28); an annular tube (27) is sleeved on the outside of each pressure head (26); multiple nozzles (28) are provided on the annular tube (27); the nozzles (28) on two annular tubes (27) are staggered.

8. The experimental simulation device for quenching and hot forming of ultra-high strength hot-formed steel according to claim 1, characterized in that, The experimental chamber (4) is provided with a protective cover (29) on the outside; the protective cover (29) is slidably connected to the experimental table (1).

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