Vacuum quenching furnace for metal heat treatment processes

Abstract

The utility model discloses a vacuum quenching furnace of metal heat treatment processing, including quenching furnace body, the left -hand member of quenching furnace body is equipped with the sealing door, is equipped with the quenching frame in the quenching furnace body, is equipped with a plurality of load material net tray in the quenching frame. The utility model discloses through the load material net tray of a plurality of inserting in the quenching frame, make the rectangular limit protruding of load material net tray insert in the strip -shaped limit opening on the rectangular support seat, convenient quick to load material net tray and position are changed and are positioned, the in -and -out of metal parts is convenient, improves the quenching efficiency, through the fixed laying heat -resisting steel sheet in the quenching furnace body, and the lining laying rubber asbestos board between heat -resisting steel sheet and quenching furnace body, compound magnesium silicate alumina paint is coated on heat -resisting steel sheet, improves the heat -insulating performance of heat -resisting steel sheet, effectively reduces the heat loss and prolongs the life, utilizes the advantage of composite structure and significantly improves the heat -insulating performance of quenching furnace body, ensures the heat preservation effect after quenching.

Description

Technical Field

[0001] This utility model relates to the field of vacuum quenching furnace technology, and in particular to a vacuum quenching furnace for metal heat treatment. Background Technology

[0002] Vacuum quenching furnaces are industrial equipment used to quench metal materials in a vacuum environment. They are mainly used to improve the hardness and wear resistance of workpieces while maintaining a uniform internal structure. The vacuum environment enables rapid cooling, avoids oxidation of the workpiece surface, and produces a high-hardness, high-wear-resistant microstructure. They are suitable for fields such as automobile manufacturing and machinery manufacturing.

[0003] In practical use, existing vacuum quenching furnaces have problems such as inconvenient and slow replacement of the material tray inside the quenching rack, inconvenient material loading and unloading, low quenching efficiency, and poor heat insulation performance inside the furnace, which affects the heat preservation effect after quenching. A vacuum quenching furnace for metal heat treatment is proposed to solve the above problems. Utility Model Content

[0004] In view of the shortcomings and defects in the existing technology, this utility model proposes a vacuum quenching furnace for metal heat treatment, which solves the technical problems in the existing vacuum quenching furnace in the background art. In actual use, the material carrier mesh in the quenching rack is inconvenient to replace quickly, the material feeding and unloading is very inconvenient, the quenching efficiency is low, and the heat insulation performance in the quenching furnace is poor, which affects the heat preservation effect after quenching.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A vacuum quenching furnace for metal heat treatment includes a furnace body, a sealed door at the left end of the furnace body, a quenching rack inside the furnace body, a plurality of material-carrying mesh trays inside the quenching rack, rectangular openings on all four sides of the quenching rack, and a plurality of equally spaced rectangular support seats fixedly connected to the inner walls of the left and right sides of the rectangular openings on the front and rear sides. The plurality of material-carrying mesh trays are slidably connected between two opposing rectangular support seats on the same horizontal plane. A heat insulation component is provided on the inner wall of the furnace body.

[0006] Preferably, L-shaped supports are fixedly connected to the front and rear side walls of the quenching rack near the lower ends of the four corners, and the four L-shaped supports are placed on the bottom of the quenching furnace body.

[0007] Preferably, the quenching rack, the material carrier tray, and the L-shaped support are all made of nickel-chromium alloy.

[0008] Preferably, each of the two rectangular support seats on the same horizontal plane has a strip-shaped limiting opening on its opposite sidewall. The inner walls of the left and right sides of the strip-shaped limiting openings are connected to the sidewall of the quenching rack. Each of the material carrier trays has a rectangular limiting protrusion on its front and rear sidewalls near the four corners. Two rectangular limiting protrusions on the same side are respectively inserted into the strip-shaped limiting openings on both sides. Each of the material carrier trays has a rectangular pull block fixedly connected to its sidewall facing the sealing door.

[0009] Preferably, the rectangular limiting protrusion and the rectangular pull block are integrally cast with the material carrier mesh.

[0010] Preferably, the heat insulation component includes a rubber asbestos board fixedly laid on the inner wall of the quenching furnace body, and a heat-resistant steel plate fixedly laid on the side wall of the rubber asbestos board away from the quenching furnace body, and the heat-resistant steel plate is fully coated with a composite aluminum magnesium silicate coating.

[0011] Compared with the prior art, the advantages of this utility model are as follows: 1. By inserting several material carrier trays into the quenching frame, the rectangular limiting protrusions on the material carrier trays are inserted into the strip limiting openings on the rectangular support base, which facilitates quick replacement and positioning of the material carrier trays, makes it easier to feed and unload metal parts, and improves quenching efficiency.

[0012] 2. By fixing heat-resistant steel plates inside the quenching furnace body and lining the space between the heat-resistant steel plates and the quenching furnace body with rubber asbestos boards, and applying composite aluminum magnesium silicate coating to the heat-resistant steel plates, the heat insulation performance of the heat-resistant steel plates is improved, effectively reducing heat loss and extending service life. The advantages of the composite structure are used to significantly improve the heat insulation performance of the quenching furnace body and ensure the heat preservation effect after quenching. Attached Figure Description

[0013] Figure 1 This is a perspective view of a vacuum quenching furnace for metal heat treatment according to the present invention. Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a schematic diagram of the quenching rack, material carrier tray, and L-shaped support of a vacuum quenching furnace for metal heat treatment proposed in this utility model. Figure 4 This is a schematic diagram showing the disassembled structure of the material carrier tray and rectangular support base of a vacuum quenching furnace for metal heat treatment proposed in this utility model.

[0014] In the figure: 1 Quenching furnace body, 2 Sealed door, 3 Quenching rack, 4 Material tray, 5 Rectangular opening, 6 Rectangular support base, 7 L-shaped support, 8 Strip-shaped limiting opening, 9 Rectangular limiting protrusion, 10 Rectangular pull block, 11 Rubber asbestos board, 12 Heat-resistant steel plate. Detailed Implementation

[0015] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figure 1-4 A vacuum quenching furnace for metal heat treatment includes a furnace body 1, a sealing door 2 at the left end of the furnace body 1, a quenching rack 3 inside the furnace body 1, L-shaped supports 7 fixedly connected to the front and rear side walls near the lower corners of the quenching rack 3, and the four L-shaped supports 7 are placed on the bottom of the furnace body 1. Several material-carrying mesh trays 4 are provided inside the quenching rack 3. The quenching rack 3, the material-carrying mesh trays 4 and the L-shaped supports 7 are all made of nickel-chromium alloy.

[0018] The quenching rack 3 has rectangular openings 5 ​​on all four sides. Several equally spaced rectangular support seats 6 are fixedly connected to the inner walls of the left and right sides of the rectangular openings 5 ​​on both the front and rear sides. Several material-carrying mesh trays 4 are slidably connected between two opposing rectangular support seats 6 on the same horizontal plane. Strip-shaped limiting openings 8 are provided on the opposing side walls of the two rectangular support seats 6 on the same horizontal plane. The inner walls of the strip-shaped limiting openings 8 on both the left and right sides are connected to the side walls of the quenching rack 3. Rectangular limiting protrusions 9 are provided on the front and rear side walls near the four corners of the several material-carrying mesh trays 4. Two rectangular limiting protrusions 9 on the same side are respectively inserted into the strip-shaped limiting openings 8 on both sides. Rectangular pull blocks 10 are fixedly connected to the side walls of several material-carrying mesh trays 4 facing the sealing door 2. The rectangular limiting protrusions 9 and the rectangular pull blocks 10 are integrally cast with the material-carrying mesh trays 4. The metal parts to be quenched are laid flat on the material-carrying mesh trays 4. After opening the sealing door 2, the material-carrying mesh trays 4 are horizontally inserted into the quenching rack 3 through the rectangular openings 5. The rectangular limiting protrusions 9 on the material-carrying mesh trays 4 are respectively inserted into the strip limiting openings 8 on the two rectangular support seats 6 on the same horizontal plane, which facilitates the quick replacement and positioning of the material-carrying mesh trays 4, thereby facilitating the loading and unloading of metal parts and improving the quenching efficiency.

[0019] The inner wall of the quenching furnace body 1 is equipped with a heat insulation component, which includes a rubber asbestos board 11 fixedly laid on the inner wall of the quenching furnace body 1. A heat-resistant steel plate 12 is fixedly laid on the side wall of the rubber asbestos board 11 away from the quenching furnace body 1. The heat-resistant steel plate 12 is fixedly laid inside the quenching furnace body 1, and a rubber asbestos board 11 is laid as a lining between the heat-resistant steel plate 12 and the quenching furnace body 1. The advantages of the composite structure are used to significantly improve the heat insulation performance of the quenching furnace body 1, ensuring the heat preservation effect after quenching. The heat-resistant steel plate 12 is fully coated with a composite aluminum magnesium silicate coating. Applying the composite aluminum magnesium silicate coating to the heat-resistant steel plate 12 improves the heat insulation performance of the heat-resistant steel plate 12, effectively reduces heat loss and extends service life.

[0020] In use, the metal parts to be quenched are laid flat on several material trays 4. After opening the sealing door 2, the material trays 4 are horizontally inserted into the quenching rack 3 through the rectangular openings 5. The rectangular limiting protrusions 9 on the material trays 4 are respectively inserted into the strip limiting openings 8 on the two rectangular support seats 6 on the same horizontal plane, which facilitates the quick replacement and positioning of the material trays 4, thereby facilitating the loading and unloading of metal parts and improving the quenching efficiency. A heat-resistant steel plate 12 is fixedly laid inside the quenching furnace body 1, and a rubber asbestos board 11 is laid between the heat-resistant steel plate 12 and the quenching furnace body 1. A composite aluminum magnesium silicate coating is applied to the heat-resistant steel plate 12 to improve the heat insulation performance of the heat-resistant steel plate 12, effectively reduce heat loss and extend service life. The advantages of the composite structure are used to significantly improve the heat insulation performance of the quenching furnace body 1, ensuring the heat preservation effect after quenching.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A vacuum quenching furnace for metal heat treatment, comprising a furnace body (1), a sealing door (2) at the left end of the furnace body (1), a quenching rack (3) inside the furnace body (1), and a plurality of material-carrying mesh trays (4) inside the quenching rack (3), characterized in that, The quenching rack (3) has rectangular openings (5) on all four sides. Several rectangular support seats (6) are fixedly connected to the inner walls of the rectangular openings (5) on the front and rear sides. Several material carrier trays (4) are slidably connected between two opposite rectangular support seats (6) on the same horizontal plane. The inner wall of the quenching furnace body (1) is provided with heat insulation components.

2. The vacuum quenching furnace for metal heat treatment according to claim 1, characterized in that, The quenching rack (3) has L-shaped supports (7) fixedly connected to the front and rear side walls near the lower corners of the four corners, and the four L-shaped supports (7) are placed on the bottom of the quenching furnace body (1).

3. The vacuum quenching furnace for metal heat treatment according to claim 2, characterized in that, The quenching rack (3), the material carrier mesh (4), and the L-shaped support (7) are all made of nickel-chromium alloy.

4. The vacuum quenching furnace for metal heat treatment according to claim 1, characterized in that, On the opposite sidewalls of the two rectangular support seats (6) on the same horizontal plane, there are strip-shaped limiting openings (8). The inner walls of the left and right sides of the strip-shaped limiting openings (8) are connected to the sidewalls of the quenching rack (3). On the front and rear sidewalls of the material carrier trays (4) near the four corners, there are rectangular limiting protrusions (9). Two rectangular limiting protrusions (9) on the same side are respectively inserted into the strip-shaped limiting openings (8) on both sides. Rectangular pull blocks (10) are fixedly connected to the sidewalls of the material carrier trays (4) facing the sealing door (2).

5. The vacuum quenching furnace for metal heat treatment according to claim 4, characterized in that, The rectangular limiting protrusion (9) and the rectangular pull block (10) are integrally cast with the material carrier mesh (4).

6. The vacuum quenching furnace for metal heat treatment according to claim 1, characterized in that, The heat insulation component includes a rubber asbestos board (11) fixedly laid on the inner wall of the quenching furnace body (1), and a heat-resistant steel plate (12) fixedly laid on the side wall of the rubber asbestos board (11) away from the quenching furnace body (1), and the heat-resistant steel plate (12) is fully coated with a composite aluminum magnesium silicate coating.

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