Partitioned temperature control heat treatment device suitable for large metal sheet

Abstract

The utility model relates to a partition temperature control heat treatment device suitable for a large metal sheet, and aims to solve the problem that a traditional heat treatment device generally adopts an integral temperature control mode, that is, a heating area is uniformly regulated and controlled through a single temperature control system. Although the mode is simple in structure and convenient to operate, obvious limitation exists when large sheets are processed. As the thin plate is large in size, the heat conduction rate of the edge area and the heat conduction rate of the center area are obviously different, and a large temperature gradient is easily formed. The partition temperature control heat treatment device suitable for the large metal sheet comprises a heating furnace cover and a base, at least three independent partition heating wires are arranged in the heating furnace cover, at least three thermocouples are correspondingly arranged on the base, and the heating wires are independently regulated and controlled through a temperature control system; accurate partition regulation and control of the temperature in the heat treatment process of the large metal sheet are achieved, it is guaranteed that all areas of the sheet are evenly heated, therefore, deformation is effectively reduced, the material performance is improved, and the problem that the large metal sheet is heated unevenly in the heat treatment process is solved.

Description

Technical Field

[0001] This application relates to the field of metal heat treatment equipment, and more specifically, to a zoned temperature-controlled heat treatment device suitable for large metal sheets. Background Technology

[0002] With the continuous development of industrial manufacturing technology, large thin metal sheets are increasingly widely used in aerospace, automobile manufacturing, shipbuilding, medical devices, and new energy fields. However, due to their large size and thinness, large thin sheets are easily affected by uneven temperature distribution during heat treatment, leading to problems such as thermal stress concentration, increased deformation, and uneven mechanical properties.

[0003] Traditional heat treatment equipment typically employs a unified temperature control method, where a single temperature control system uniformly regulates the heating area. While this approach is simple in structure and convenient to operate, it has significant limitations when processing large, thin plates. Due to the large size of the plates, there is a significant difference in heat conduction rates between the edge and center regions, easily leading to large temperature gradients. This temperature inhomogeneity causes uneven thermal expansion and contraction during heat treatment, resulting in defects such as warping, deformation, and even cracking. Existing technologies attempt to improve temperature uniformity by refining the heating element layout or optimizing the hot air circulation system, but these methods still suffer from insufficient control precision, high energy consumption, and limited applicability. These problems severely affect the quality and efficiency of heat treatment for large, thin metal plates, restricting their development in high-precision, high-performance applications.

[0004] To address the aforementioned issues, existing technologies urgently need improvement. Summary of the Invention:

[0005] The purpose of this invention is to solve the existing problems and provide a zoned temperature control heat treatment device suitable for large metal thin plates.

[0006] The technical solution of this utility model is as follows:

[0007] A zoned temperature-controlled heat treatment device suitable for large thin metal sheets includes a heating furnace hood and a base. A metal plate support is provided on the base. The heating furnace hood completely surrounds the base and the metal plate support to form a closed heat treatment space. A cover body is formed inside the heating furnace hood. At least three independently zoned heating wires are provided inside the cover body, including a lower heating wire, a middle heating wire, and an upper heating wire, which are evenly arranged at the bottom, middle, and top of the cover body, respectively. At least three thermocouples are correspondingly provided on the base, including a lower thermocouple, a middle thermocouple, and an upper thermocouple. The lower heating wire, the middle heating wire, and the upper heating wire are independently controlled by a temperature control system.

[0008] As a preferred technical solution, the metal plate bracket is fixed to the central area of ​​the base, and a straight rod is set at the center point of the base, on which a lower thermocouple, a middle thermocouple and an upper thermocouple are set.

[0009] As a preferred technical solution, the metal plate bracket is provided with a bracket base and a bracket plate. The bracket base and the bracket plate have multiple grooves for fixing the metal plate. The bracket base and the bracket plate have a circular hole in the center to avoid thermocouple contact. The metal plate bracket is provided with four bracket rods. The bracket rods are fixed to the bracket plate by screws. The bracket rods have multiple circular holes for adjusting the height of the bracket plate.

[0010] As a preferred technical solution, the lower thermocouple, the middle thermocouple, and the upper thermocouple are horizontally aligned with the middle of the lower heating wire, the middle heating wire, and the upper heating wire, respectively.

[0011] As a preferred technical solution, a heat insulation layer is provided between the base and the ground.

[0012] As a preferred technical solution, heat insulation cotton is provided between the heating wire inside the heating furnace hood and the hood body, and the inner wall of the heating furnace hood is coated with a reflective coating.

[0013] The beneficial effects of this utility model are as follows:

[0014] This application provides a zoned temperature control heat treatment device suitable for large thin metal sheets, including a heating furnace hood and a base. The heating furnace hood has at least three independently zoned heating wires, and the base has at least three thermocouples. The heating wires are independently controlled by a temperature control system, which realizes precise zoned temperature control during the heat treatment of large thin metal sheets, ensuring uniform heating in all areas of the sheet, thereby effectively reducing deformation and improving material properties, and solving the problem of uneven heating during the heat treatment of large thin metal sheets. The insulation cover surrounds the metal sheet support, providing efficient insulation during the heat treatment process and reducing heat loss. The metal sheet support is used to suspend the metal sheet. Through multi-point support and suspending design, the contact area between the metal sheet and other objects is effectively reduced, preventing the metal sheet from warping or deforming due to thermal stress concentration during the heat treatment process. Attached image description:

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a detailed view of the heating furnace cover of this utility model;

[0017] Figure 3 This is a three-dimensional structural schematic diagram of the present invention;

[0018] The meanings of the labels in the figures are as follows:

[0019] Heating furnace cover 1, cover body 10, heat insulation cotton 11, lower heating wire 12, middle heating wire 13, upper heating wire 14, base 2, platform 20, lower thermocouple 21, middle thermocouple 22, upper thermocouple 23, metal plate bracket 3, bracket base 30, bracket rod 31, bracket plate 32. Detailed implementation method:

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1-3 As shown, a zoned temperature-controlled heat treatment device suitable for large thin metal sheets includes a heating furnace hood 1 and a base 2. A metal plate support 3 is mounted on the base 2. The heating furnace hood 1 completely surrounds the insulation hood 2, the base 2, and the metal plate support 3, forming a closed heat treatment space. A cover 10 is formed inside the heating furnace hood 1. At least three independently zoned heating wires are provided inside the cover 10, including a lower heating wire 12, a middle heating wire 13, and an upper heating wire 14, which are evenly distributed at the bottom, middle, and top of the cover 10, respectively. At least three thermocouples are correspondingly provided on the base 2, including a lower thermocouple 21, a middle thermocouple 22, and an upper thermocouple 23. The lower heating wire 12, the middle heating wire 13, and the upper heating wire 14 are independently controlled by a temperature control system. The heating furnace hood 1 completely surrounds the base 2 and the metal plate support 3, forming a closed heat treatment space. Therefore, through zoned temperature control, precise temperature control during the heat treatment process can be achieved, ensuring uniform heating of each area of ​​the thin sheet, thereby effectively reducing deformation and improving material properties.

[0022] Furthermore, the metal plate support 3 is fixed to the central area of ​​the base 2, and a straight rod is set at the center point of the base 2. A lower thermocouple 21, a middle thermocouple 22, and an upper thermocouple 23 are mounted on the straight rod. This technical solution, by fixing the metal plate support 3 to the central area of ​​the base and setting a straight rod at the center point of the base 2, allows the lower thermocouple 21, the middle thermocouple 22, and the upper thermocouple 23 to be installed on the straight rod. This design enables the thermocouples to accurately monitor temperature changes at different heights, ensuring the accuracy and uniformity of temperature control. In this way, deformation and defects caused by uneven temperature during the heat treatment of large thin metal plates can be effectively avoided.

[0023] Furthermore, the metal plate support 3 includes a support base 30 and a support plate 32. The support base 30 and support plate 32 have multiple grooves for fixing the metal plate, reducing the contact area between the metal plate and other objects to prevent warping or deformation due to thermal stress concentration during heat treatment. The support base 30 and support plate 32 have a central hole to prevent thermocouple contact and ensure temperature control. The metal plate support 3 has four support rods 31, which fix the support plate 32 with screws. Each support rod 31 has multiple holes for adjusting the height of the support plate 32 to accommodate metal plates of different sizes.

[0024] Furthermore, the lower thermocouple 21, the middle thermocouple 22, and the upper thermocouple 23 are horizontally aligned with the middle of the lower heating wire 12, the middle heating wire 13, and the upper heating wire 14, respectively.

[0025] Furthermore, a heat insulation layer is provided between the base 2 and the ground.

[0026] Furthermore, heat insulation cotton 11 is provided between the heating wire inside the heating furnace cover 1 and the cover body 10 for heat preservation, and the inner wall of the cover body 10 of the heating furnace cover 1 is coated with a reflective coating.

[0027] Working Principle: The heating furnace hood 1 completely surrounds the base 2 and the metal plate support 3, forming a 360° all-around heat treatment space. This ensures uniform temperature distribution during the heat treatment process. The metal plate support 3 is used to suspend the metal plate. Through multi-point support and slinging design, it effectively reduces the contact area between the metal plate and other objects, preventing warping or deformation of the metal plate due to thermal stress concentration during heat treatment. This zoned temperature control design effectively ensures temperature uniformity in each area during heat treatment, avoiding metal plate deformation caused by excessive temperature gradients. The support base 30 and support plate 32 of the metal plate support 3 have multiple grooves for fixing the metal plate, ensuring its stability during heat treatment and preventing warping or deformation due to gravity or thermal stress. The support plate 32 is fixed to the support rod 31 with screws. The support rod 31 has multiple round holes to adjust the height of the support plate to meet the fixing requirements of metal plates of different sizes. In practice, the metal plate is first fixed in the groove of the metal plate bracket 4, and then the furnace cover 1 is covered for heating. During the heating process, the thermocouple and heating wire are controlled by the base 2 to achieve zoned temperature control and precise heat treatment.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A zoned temperature-controlled heat treatment device suitable for large metal sheets, comprising a heating furnace hood (1) and a base (2), characterized in that: The base (2) is provided with a metal plate support (3). The heating furnace cover (1) completely surrounds the base (2) and the metal plate support (3) to form a closed heat treatment space. The heating furnace cover (1) has a cover body (10) inside. The cover body (10) has at least three independent heating wires, including a lower heating wire (12), a middle heating wire (13) and an upper heating wire (14), which are evenly arranged at the bottom, middle and top of the cover body (10). The base (2) is provided with at least three thermocouples, including a lower thermocouple (21), a middle thermocouple (22) and an upper thermocouple (23). The lower heating wire (12), the middle heating wire (13) and the upper heating wire (14) are independently controlled by the temperature control system.

2. The zoned temperature-controlled heat treatment device according to claim 1, characterized in that: The metal plate bracket (3) is fixed to the central area of ​​the base (2), and a straight rod is set at the center point of the base (2), on which a lower thermocouple (21), a middle thermocouple (22) and an upper thermocouple (23) are set.

3. The zoned temperature-controlled heat treatment device according to claim 2, characterized in that: The metal plate bracket (3) is provided with a bracket base (30) and a bracket plate (32). The bracket base (30) and the bracket plate (32) have multiple grooves for fixing the metal plate. The bracket base (30) and the bracket plate (32) have a circular hole in the center to avoid thermocouple contact. The metal plate bracket (3) is provided with four bracket rods (31). The bracket rods (31) fix the bracket plate (32) with screws. The bracket rods (31) have multiple circular holes for adjusting the height of the bracket plate (32).

4. The zoned temperature-controlled heat treatment device according to claim 2, characterized in that: The lower thermocouple (21), the middle thermocouple (22), and the upper thermocouple (23) are horizontally aligned with the middle of the lower heating wire (12), the middle heating wire (13), and the upper heating wire (14), respectively.

5. The zoned temperature-controlled heat treatment device according to claim 1, characterized in that: A heat insulation layer is provided between the base (2) and the ground.

6. The zoned temperature-controlled heat treatment device according to claim 1, characterized in that: The heating furnace cover (1) has a heat insulation cotton (11) between the heating wire and the cover body (10) inside, and the inner wall of the cover body (10) of the heating furnace cover (1) is coated with a reflective coating.

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