Quenching and profiling device in steel plate heat treatment cavity

Abstract

A quenching profiling device in a steel plate heat treatment cavity comprises an upper die assembly and a lower die assembly which are matched with each other, water pipe grooves are formed in the upper die assembly and the lower die assembly respectively, the water pipe grooves are evenly formed in the upper portion of the lower die assembly and the lower portion of the upper die assembly at intervals respectively and communicated with openings in the direction of a steel plate, and the inner ends of the openings are communicated with the water pipe grooves. A water pipe is embedded in the water pipe groove in a detachable structure and provided with a plurality of water spraying openings in the opening direction. Open type detachable water pipes are arranged in an original mold structure, when part of the water pipes need to be cleaned, the water pipes are taken down, replaced and cleaned, convenience and rapidness are achieved, and the repair and maintenance time is shortened; after the steel plate is pressed, the upper die and the lower die of the device keep pressing force, then the embedded water pipe sprays water, cooling water is sprayed out through the opening for quenching, and deformation springback of the steel plate is limited under the pressure of the die.

Description

Technical field:

[0001] The present application relates to the technical field of heat treatment equipment, and in particular to a quenching and pressing device in a heat treatment chamber for steel plates. Background technology:

[0002] At present, some wear-resistant parts of construction machinery such as bulldozers and graders with curved or bent blades and knife corners need to adopt hot stamping technology to heat the blank to the recrystallization temperature, reduce the flow stress of the blank in the austenite state, and improve the formability. After die forming, quenching is performed separately, but the product is in a process of coexistence and interaction of temperature field, stress field, and phase change after hot forming and during quenching, and deformation occurs. Some parts need to be corrected, which limits the production capacity of components and reduces efficiency.

[0003] National invention patent application with application number 202310201767.X - A high-strength steel thick plate hot forming mold, including an upper mold insert body and a lower mold insert body that cooperate with each other, and also includes a surrounding device, the surrounding device surrounds the lower mold insert body to form a cooling liquid cavity, the upper part of the cooling liquid cavity is open, and the surrounding device is sealed and connected to the lower mold insert body. The lower mold insert body is provided with a lower molding surface, and a first cooling water channel is also embedded in the lower mold insert body, and the first cooling water channel is arranged near the lower molding surface; the upper mold insert body is provided with an upper molding surface, and a second cooling water channel is embedded in the upper mold insert body, and the second cooling water channel is arranged near the upper molding surface, and the upper molding surface is adapted to the shape of the lower molding surface.

[0004] This patent directly opens cooling water channels on the upper mold insert body and the lower mold insert body, and uses the cooling water channels to cool and perform press-forming quenching of thick materials. However, due to their own structural characteristics, the cooling water channels need to be inspected and maintained regularly, but the maintenance and care are relatively troublesome, which takes up a lot of quenching and pressing time and cannot meet actual production needs. Utility model content:

[0005] In order to solve the above technical problems, the utility model provides a quenching and profiling device for steel plate heat treatment chamber, and the technical solution adopted is:

[0006] The quenching and profiling device for steel plate heat treatment chamber comprises:

[0007] Upper die assembly and lower die assembly that cooperate with each other;

[0008] Water pipe grooves, which are respectively arranged in the upper mold assembly and the lower mold assembly, and a plurality of water pipe grooves are respectively evenly spaced along the upper part of the lower mold assembly and the lower part of the upper mold assembly;

[0009] An opening in the direction of the steel plate is connected, and the inner end of the opening is connected to the water pipe groove;

[0010] The water pipe is embedded in the water pipe groove in a detachable structure and is provided with a plurality of water spraying ports toward the opening direction.

[0011] Furthermore, one end of the water pipe is connected to a hose, and the other end of the hose is connected to a water distributor.

[0012] Furthermore, a sealing head is provided at the other end of the water pipe.

[0013] Furthermore, the end surfaces of the upper mold assembly and the lower mold assembly that cooperate with each other are arranged in an arc-shaped structure.

[0014] Furthermore, the openings are arranged in a fan-shaped structure, and the openings are arranged at even intervals along the end surface of the arc-shaped structure.

[0015] Furthermore, the size of the opening in the open fan-shaped structure is smaller than the diameter of the water pipe groove.

[0016] The beneficial effect of the utility model is that an open and detachable water pipe is arranged in the original mold structure, and when part of the water pipe needs to be cleaned, it can be removed, replaced and cleaned, which is convenient and quick, and reduces the repair and maintenance time.

[0017] After the steel plate is profiled, the upper and lower dies of the device maintain the pressing force, and then the embedded water pipes spray water, and the cooling water is sprayed out through the opening for quenching, limiting the deformation and rebound of the steel plate under the pressure of the die.

[0018] The opening is set as a fan-shaped structure to expand the water contact surface of the steel plate and improve the quenching effect. Description of the drawings:

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0020] In the figure:

[0021] 1. Upper mold assembly, 2. Lower mold assembly, 3. Water pipe groove, 4. Opening, 5. Water pipe, 6. Water spray outlet. Specific implementation method:

[0022] In order to make the purpose, technical scheme and advantages of the implementation of the utility model clearer, the utility model will now be further described in detail with reference to the accompanying drawings and the following examples so that the public can better understand the implementation method of the utility model. The specific implementation scheme of the utility model is as follows:

[0023] The quenching and profiling device for heat treatment of steel plates in the cavity comprises an upper die assembly 1 and a lower die assembly 2 which cooperate with each other. Water pipe grooves 3 are respectively provided in the upper die assembly 1 and the lower die assembly 2. Several water pipe grooves 3 are evenly spaced along the upper part of the lower die assembly 2 and the lower part of the upper die assembly 1, respectively, and are connected to an opening 4 in the direction of the steel plate. The inner end of the opening 4 is connected to the water pipe groove 3. A water pipe 5 is embedded in the water pipe groove 3 with a detachable structure. The water pipe 5 is provided with several water spraying ports 6 in the direction of the opening 4. An open and detachable water pipe 5 is arranged in the original mold structure. When part of the water pipe 5 needs to be cleaned, it is removed and replaced for cleaning, which is convenient and quick, and reduces the repair and maintenance time. After the steel plate is profiling, the upper and lower molds of the device maintain the pressing force, and then the embedded water pipe 5 sprays water, and the cooling water is sprayed through the opening 4 for quenching, so as to limit the deformation and rebound of the steel plate under the mold pressure.

[0024] It should be noted that one end of the water pipe 5 is connected to a hose, the other end of the hose is connected to a water distributor, and the other end of the water pipe 5 is provided with a sealing head.

[0025] Specifically, the end faces of the upper mold assembly 1 and the lower mold assembly 2 that cooperate with each other are arranged in an arc-shaped structure, and the opening 4 is arranged in a fan-shaped structure, which expands the contact surface of the steel plate with water and improves the quenching effect. The openings 4 are evenly spaced along the end faces of the arc-shaped structure.

[0026] It should be noted that the size of the opening in the open fan-shaped structure is smaller than the diameter of the water pipe groove 3 to prevent the water pipe from falling off at the opening 4.

[0027] The working principle and working process of the utility model are as follows:

[0028] When the device is working, the preliminarily processed steel plate is first placed in a heating furnace to heat up to the austenite recrystallization temperature to reduce the flow stress of the steel plate. The temperature is generally about 860°C. Then the steel plate is transferred to the device mold, and the upper mold assembly 1 and the lower mold assembly 2 are clamped together. The steel plate deforms along with the clamping surface and fits tightly on the arc end surface.

[0029] Then the high-pressure water enters each water outlet of the water distributor, enters the corresponding water pipe 5 through the hose, and then enters the opening 4 through the water nozzle 6 to be sprayed onto the surface of the steel plate, and then discharged from the gaps on both sides of the opening 4. A large amount of circulating water flow effectively cools and quenches the steel plate.

[0030] When an individual water pipe 5 is clogged, it is only necessary to pull the water pipe 5 out of the water pipe groove 3 and replace it.

[0031] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "front", "back", "lower left", "upper right", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Although the present invention has been described according to a limited number of embodiments, those skilled in the art, with the benefit of the above description, should understand that other embodiments can be conceived within the scope of the present invention described thereby.

Claims

1. A quenching and profiling device for steel plate heat treatment chamber, characterized in that: include: An upper mold assembly (1) and a lower mold assembly (2) that cooperate with each other; Water pipe grooves (3), the water pipe grooves (3) are respectively arranged in the upper mold assembly (1) and the lower mold assembly (2), and a plurality of water pipe grooves (3) are respectively arranged at even intervals along the upper part of the lower mold assembly (2) and the lower part of the upper mold assembly (1); An opening (4) connected to the steel plate, the inner end of the opening (4) being connected to the water pipe groove (3); A water pipe (5) is embedded in the water pipe groove (3) in a detachable structure and is provided with a plurality of water spraying ports (6) facing the opening (4).

2. The quenching and profiling device for steel plate heat treatment chamber according to claim 1, characterized in that: One end of the water pipe (5) is connected to a hose, and the other end of the hose is connected to a water distributor.

3. The steel plate heat treatment chamber quenching and profiling device according to claim 2, characterized in that: The other end of the water pipe (5) is provided with a sealing head.

4. The steel plate heat treatment chamber quenching and profiling device according to claim 1, characterized in that: The end surfaces of the upper die assembly (1) and the lower die assembly (2) that cooperate with each other are arranged in an arc-shaped structure.

5. The steel plate heat treatment chamber quenching and profiling device according to claim 4, characterized in that: The openings (4) are arranged in a fan-shaped structure, and the openings (4) are arranged at even intervals along the end surface of the arc-shaped structure.

6. The steel plate heat treatment chamber quenching and profiling device according to claim 5, characterized in that: The size of the opening in the open fan-shaped structure is smaller than the diameter of the water pipe groove (3).

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