Vacuum heat treatment device for die steel with rapid cooling structure

Abstract

This invention discloses a vacuum heat treatment device for mold steel with a rapid cooling structure, relating to the field of mold steel heat treatment technology. It includes a workbench, a cooling frame behind the workbench, a water tank behind the cooling frame, and a water pump installed behind the cooling frame. The input end of the water pump passes through the water tank and is connected to a suction pipe. This invention uses the water pump to extract coolant from the water tank and delivers it to a spray nozzle via a delivery pipe. The spray nozzle directly sprays the coolant onto the surface of the high-temperature material. Utilizing the high specific heat capacity and latent heat of vaporization of the liquid, it rapidly absorbs and removes a large amount of heat energy. Simultaneously, a centrifugal fan forces airflow, forming a strong airflow convection that accelerates the replacement of hot air on the material surface, effectively reducing boundary layer thermal resistance. The coolant directly contacts the material and rapidly absorbs heat. Combined with the forced airflow to enhance heat diffusion, the synergistic effect of these two factors significantly improves the cooling rate, greatly shortens the overall heat treatment time, and achieves a significant leap in equipment capacity.

Description

Technical Field

[0001] This utility model relates to the field of mold steel heat treatment technology, specifically a vacuum heat treatment device for mold steel with a rapid cooling structure. Background Technology

[0002] Die steel is a type of steel used to manufacture molds such as cold stamping dies, hot forging dies, and die casting molds. Molds are the main processing tools for manufacturing parts in industries such as machinery manufacturing, radio instruments, motors, and electrical appliances. The quality of molds directly affects the quality of pressure processing, the precision and output of products, and production costs. In addition to reasonable structural design and processing precision, the quality and service life of molds are mainly affected by mold materials and heat treatment.

[0003] In the production process of mold steel, it is necessary to perform vacuum heat treatment to achieve oxidation-free, decarburization-free, and carburization-free processes, and to remove phosphorus scale from the surface of the workpiece. However, existing mold steel vacuum heat treatment equipment suffers from slow cooling speed, resulting in low production efficiency and unstable product quality. Therefore, a mold steel vacuum heat treatment device with a rapid cooling structure is needed to solve the problems existing in the current technology. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum heat treatment device for mold steel with a rapid cooling structure to solve the problem of slow cooling speed.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a vacuum heat treatment device for mold steel with a rapid cooling structure, including a workbench, a cooling frame arranged behind the workbench, a water tank arranged behind the cooling frame, a water pump installed behind the cooling frame, the input end of the water pump passing through the water tank and connected to a suction pipe, the output end of the water pump connected to a water delivery pipe, multiple water spray heads connected to the outer surface of the water delivery pipe, and multiple centrifugal fans installed on the outer surface of the cooling frame.

[0006] As a further embodiment of this utility model: two first support plates are installed on the upper surface of the workbench, and a vacuum furnace body is installed on the upper surface of the two first support plates, and a discharge plate is installed on the outer surface of one of the first support plates.

[0007] As a further improvement of this utility model: two fixing plates are installed on the inner wall of the vacuum furnace body, and a heating chamber is installed on the outer surface of the two fixing plates.

[0008] As a further embodiment of this utility model: a support platform is installed inside the heating chamber, a vacuum pump is installed on the outer surface of the support platform, the output end of the vacuum pump is connected to an exhaust pipe, and the end of the exhaust pipe away from the vacuum pump passes through the vacuum furnace body and extends to the outside of the vacuum furnace body.

[0009] As a further embodiment of this utility model: a first sealing door is hinged to the front of the vacuum furnace body, and a first circular knob handle is installed on the front of the first sealing door; a second sealing door is hinged to the back of the vacuum furnace body, and a second circular knob handle is installed on the back of the second sealing door.

[0010] As a further embodiment of this utility model: a sieve plate is installed inside the cooling frame, a water outlet pipe is connected to the bottom surface of the cooling frame, a plurality of first support legs are welded to the bottom surface of the cooling frame, a second support plate is fixedly installed on the back of the cooling frame, the upper surface of the second support plate is connected to the bottom surface of the water tank, a support frame is installed on the outer surface of the cooling frame, and the upper surface of the support frame is connected to the outer surface of the water supply pipe.

[0011] As a further improvement of this utility model: a controller is installed on the upper surface of the workbench, and multiple second support legs are welded to the bottom surface of the workbench.

[0012] Compared with the prior art, the beneficial effects of this utility model include:

[0013] This invention uses a water pump to extract coolant from a water tank and deliver it to a spray nozzle via a delivery pipe. The spray nozzle directly sprays the coolant onto the surface of the high-temperature material. Utilizing the high specific heat capacity and latent heat of vaporization of the liquid, it quickly absorbs and removes a large amount of heat energy. At the same time, a centrifugal fan forces airflow, forming a strong airflow convection that accelerates the replacement of hot air on the material surface, effectively reducing boundary layer thermal resistance. The coolant directly contacts the material and quickly absorbs heat. Combined with the forced airflow to enhance heat diffusion, the synergistic effect of these two factors significantly improves the cooling speed, greatly shortens the overall heat treatment time, and achieves a significant leap in equipment capacity. Attached Figure Description

[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0015] Figure 1 The schematic diagram shows a three-dimensional structural schematic of a vacuum heat treatment device for mold steel with a rapid cooling structure according to one embodiment of the present invention.

[0016] Figure 2The schematic diagram shows a left view of a vacuum heat treatment apparatus for mold steel with a rapid cooling structure according to one embodiment of the present invention;

[0017] Figure 3 The schematic diagram shows a cross-sectional view of a vacuum heat treatment apparatus for mold steel with a rapid cooling structure according to one embodiment of the present invention.

[0018] Figure 4 The schematic diagram shows a rear sectional view of a vacuum heat treatment apparatus for mold steel with a rapid cooling structure according to one embodiment of the present invention.

[0019] In the picture:

[0020] 1. Workbench; 2. Controller; 3. First circular knob handle; 4. First sealing door; 5. Gas outlet pipe; 6. Vacuum furnace body; 7. Water pump; 8. Water tank; 9. First support leg; 10. Cooling frame; 11. Second support leg; 12. Centrifugal fan; 13. Water spray head; 14. First support plate; 15. Vacuum pump; 16. Support platform; 17. Fixing plate; 18. Heating chamber; 19. Water suction pipe; 20. Discharge plate; 21. Second circular knob handle; 22. Second sealing door; 23. Water outlet pipe; 24. Water supply pipe; 25. Screen plate; 26. Second support plate; 27. Support frame. Detailed Implementation

[0021] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0022] An embodiment of the present invention is shown in conjunction with the accompanying drawings.

[0023] A vacuum heat treatment device for mold steel with a rapid cooling structure includes a workbench 1, which provides a basic support platform for the device. A cooling frame 10 is provided behind the workbench 1, and a sieve plate 25 is installed inside. A water tank 8 is provided behind the cooling frame 10 to store coolant. A water pump 7 is installed behind the cooling frame 10 to transport coolant from the water tank 8 to the spray head 13. The input end of the water pump 7 passes through the water tank 8 and is connected to a suction pipe 19 to draw coolant. The output end of the water pump 7 is connected to a water delivery pipe 24, which connects the water pump 7 and the spray head 13 for transporting coolant. Multiple spray heads 13 are connected to the outer surface of the water delivery pipe 24 to spray water to cool the mold steel. Multiple centrifugal fans 12 are installed on the outer surface of the cooling frame 10 to accelerate the cooling process.

[0024] In this embodiment, two first support plates 14 are installed on the upper surface of the workbench 1 to support the vacuum furnace body 6. The vacuum furnace body 6 is installed on the upper surface of the two first support plates 14 together, and a heating chamber 18 is installed inside for heat treatment of mold steel. A discharge plate 20 is installed on the outer surface of one of the first support plates 14.

[0025] In this embodiment, two fixing plates 17 are installed on the inner wall of the vacuum furnace body 6 to fix the heating chamber 18. The heating chamber 18 is installed on the outer surface of the two fixing plates 17 and a heating element is installed inside for heating the mold steel.

[0026] In this embodiment, a support platform 16 is installed inside the heating chamber 18 to place mold steel for heat treatment. A vacuum pump 15 is installed on the outer surface of the support platform 16 to extract air from the heating chamber 18 and form a vacuum environment. The output end of the vacuum pump 15 is connected to an exhaust pipe 5 to discharge the gas extracted by the vacuum pump 15 to the outside of the furnace body. The end of the exhaust pipe 5 away from the vacuum pump 15 passes through the vacuum furnace body 6 and extends to the outside of the vacuum furnace body 6.

[0027] In this embodiment, a first sealing door 4 is hinged to the front of the vacuum furnace body 6 to seal the vacuum furnace body 6 and ensure a vacuum environment. A first circular knob handle 3 is installed on the front of the first sealing door 4. A second sealing door 22 is hinged to the back of the vacuum furnace body 6 to seal the back of the vacuum furnace body 6. A second circular knob handle 21 is installed on the back of the second sealing door 22 for opening and closing the second sealing door 22.

[0028] In this embodiment, a sieve plate 25 is installed inside the cooling frame 10. The coolant after absorbing heat flows slowly to the bottom of the cooling frame 10 through the fine holes of the sieve plate 25. A water outlet pipe 23 is connected to the bottom surface of the cooling frame 10 to discharge the used coolant. Multiple first support legs 9 are welded to the bottom surface of the cooling frame 10. A second support plate 26 is fixedly installed on the back of the cooling frame 10 to support the water tank 8. The upper surface of the second support plate 26 is connected to the bottom surface of the water tank 8. A support frame 27 is installed on the outer surface of the cooling frame 10 to support the water supply pipe 24. The upper surface of the support frame 27 is connected to the outer surface of the water supply pipe 24.

[0029] In this embodiment, a controller 2 is installed on the upper surface of the workbench 1 to control the entire device, and multiple second support legs 11 are welded to the bottom surface of the workbench 1 to support the entire workbench 1.

[0030] Working principle: During use, the operator first manually rotates the first circular knob handle 3 on the vacuum furnace body 6 to open the first sealing door 4, and places the prepared material on the support platform 16 inside the heating chamber 18. After the material is placed, the operator manually rotates the first circular knob handle 3 again to close the first sealing door 4. Then, the vacuum pump 15 is started through the controller 2 to extract and discharge the air in the heating chamber 18 through the air outlet pipe 5. After a vacuum environment is formed in the heating chamber 18, the material inside is heated. After the material is heated, the operator manually rotates the second circular knob handle 21 to open the second sealing door 22, and then opens the first sealing door 4 through the first circular knob handle 3. Using tools, the material is pushed from the first sealing door 4 to the second sealing door 22, causing it to fall onto the discharge plate 20 and slide into the cooling frame 10. At this time, the water pump 7 is started by the controller 2. The water pump 7 draws coolant from the water tank 8 through the suction pipe 19 and then delivers the coolant to the spray head 13 through the water pipe 24. The spray head 13 sprays the coolant onto the surface of the material to cool it down. At the same time, multiple centrifugal fans 12 are started to cool the material being sprayed with coolant. After absorbing heat, the coolant sprayed onto the material flows through the small holes on the screen plate 25 to the bottom of the cooling frame 10 and is finally discharged through the water outlet pipe 23 at the bottom of the cooling frame 10.

[0031] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A vacuum heat treatment apparatus for mold steel with a rapid cooling structure, characterized in that, The system includes a workbench (1), a cooling frame (10) is provided behind the workbench (1), a water tank (8) is provided behind the cooling frame (10), a water pump (7) is installed behind the cooling frame (10), the input end of the water pump (7) passes through the water tank (8) and is connected to a suction pipe (19), the output end of the water pump (7) is connected to a water delivery pipe (24), the outer surface of the water delivery pipe (24) is connected to multiple water spray heads (13), and multiple centrifugal fans (12) are installed on the outer surface of the cooling frame (10).

2. The vacuum heat treatment apparatus for mold steel with a rapid cooling structure according to claim 1, characterized in that, The upper surface of the workbench (1) is equipped with two first support plates (14), and the upper surfaces of the two first support plates (14) are jointly equipped with a vacuum furnace body (6), and the outer surface of one of the first support plates (14) is equipped with a discharge plate (20).

3. The vacuum heat treatment apparatus for mold steel with a rapid cooling structure according to claim 2, characterized in that, The inner wall of the vacuum furnace body (6) is equipped with two fixing plates (17), and the outer surfaces of the two fixing plates (17) are jointly equipped with a heating chamber (18).

4. The vacuum heat treatment apparatus for mold steel with a rapid cooling structure according to claim 3, characterized in that, The heating chamber (18) is equipped with a support platform (16), and a vacuum pump (15) is installed on the outer surface of the support platform (16). The output end of the vacuum pump (15) is connected to an exhaust pipe (5). The end of the exhaust pipe (5) away from the vacuum pump (15) passes through the vacuum furnace body (6) and extends to the outside of the vacuum furnace body (6).

5. The vacuum heat treatment apparatus for mold steel with a rapid cooling structure according to claim 4, characterized in that, The front of the vacuum furnace body (6) is hinged with a first sealing door (4), and a first round knob handle (3) is installed on the front of the first sealing door (4). The back of the vacuum furnace body (6) is hinged with a second sealing door (22), and a second round knob handle (21) is installed on the back of the second sealing door (22).

6. The vacuum heat treatment apparatus for mold steel with a rapid cooling structure according to claim 1, characterized in that, The cooling frame (10) is equipped with a sieve plate (25) inside. The bottom surface of the cooling frame (10) is connected to a water outlet pipe (23). Multiple first support legs (9) are welded to the bottom surface of the cooling frame (10). A second support plate (26) is fixedly installed on the back of the cooling frame (10). The upper surface of the second support plate (26) is connected to the bottom surface of the water tank (8). A support frame (27) is installed on the outer surface of the cooling frame (10). The upper surface of the support frame (27) is connected to the outer surface of the water supply pipe (24).

7. The vacuum heat treatment apparatus for mold steel with a rapid cooling structure according to claim 1, characterized in that, The upper surface of the workbench (1) is equipped with a controller (2), and the bottom surface of the workbench (1) is welded with a plurality of second support legs (11).

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