Heat treatment furnace for metal heat treatment

Abstract

The utility model relates to the technical field of metal heat treatment, in particular to a heat treatment furnace for metal heat treatment, which comprises a furnace body, a heat preservation door, a heat preservation frame, a fixing frame, a U-shaped silicon molybdenum rod and the like. The front side of the furnace body is provided with an opening, the front side of the furnace body is hinged with two thermal insulation doors, the inner wall of the furnace body is connected with a thermal insulation frame, the front and rear sides of the thermal insulation frame are provided with openings, the inner wall of the thermal insulation frame is connected with a fixed frame, and a U-shaped silicon molybdenum rod is connected between the fixed frame and the thermal insulation frame. The silicon carbide ceramic plate is provided with the silicon carbide ceramic plate, the connecting shell, the locking assembly and the unlocking assembly, the silicon carbide ceramic plate is locked and fixed in a clamping mode through the clamping blocks, mounting and dismounting are easy and convenient, complex tools do not need to be used for assistance, the labor cost and the time cost of production stagnation can be reduced, and the production efficiency is improved. And the risk that the silicon carbide ceramic plate and the furnace body are damaged due to misoperation in the mounting process can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal heat treatment technical field, specifically, relate to a heat treatment furnace for metal heat treatment. BACKGROUND

[0002] Metal heat treatment is a kind of process method for changing the physical and mechanical properties of metal materials through heating and cooling process, aims at improving its hardness, strength, wear resistance, toughness and other characteristics.This process mainly contains annealing, normalizing, quenching, tempering and multiple forms, according to different needs to select appropriate processing mode.Heat treatment furnace is the important equipment to realize these processes, it can provide accurate control heating environment.

[0003] The overall furnace lining of traditional heat treatment furnace adopts monolithic refractory brick or castable, once local damage occurs, need to stop furnace to carry out removal and reconstruction work, not only increase the maintenance cost, the whole maintenance cycle can be as long as several days, long time of shutdown maintenance greatly influences the continuity and efficiency of production, frequent disassembly operation also can cause additional damage to furnace body itself, further shortens the service life of heat treatment furnace. SUMMARY

[0004] In order to overcome the above-mentioned prior art defects, the purpose of the utility model is to provide a heat treatment furnace for metal heat treatment.

[0005] A heat treatment furnace for metal heat treatment, including furnace body, heat preservation door, heat preservation frame, fixed frame, U type silicon molybdenum stick, silicon carbide ceramic plate, clamping assembly, placement plate, connecting shell, locking assembly and unlocking assembly, furnace body front side is open, two heat preservation doors are hinged to furnace body front side, furnace body inner wall is connected with heat preservation frame, both sides of heat preservation frame are open, heat preservation frame inner wall is connected with fixed frame, U type silicon molybdenum stick is connected between fixed frame and heat preservation frame, at least two connecting shells and at least two unlocking assemblies are connected to the inner wall of both sides of fixed frame, locking assembly is connected in connecting shell, silicon carbide ceramic plate is connected to the inner wall of fixed frame through locking assembly, clamping assembly is connected to the inner rear side of furnace body, and placement plate is connected to the clamping assembly.

[0006] Further, it further includes ceramic fiber cotton, and the ceramic fiber cotton is connected between the furnace body and the heat preservation frame.

[0007] Further, the locking assembly includes a clamping block, a spring and a connecting block, the clamping block is slidingly connected in the connecting shell, the spring is connected between the clamping block and the connecting shell, and the connecting block is connected to both sides of the clamping block.

[0008] Further, the unlocking assembly comprises guide rods and top blocks, and at least two guide rods are slidably connected to the front and rear sides of the inner walls of the fixed frame, the guide rods are symmetrically arranged upward and downward, and top blocks are slidably connected to the guide rods, and the top blocks upward and downward are connected to each other.

[0009] Further, the side of the top block close to the connecting block is provided with an inclined surface, the area of the side of the top block close to the connecting block is smaller than that of the side of the top block away from the connecting block, and the connecting blocks are in contact with the inclined surfaces of the top blocks.

[0010] Further, the clamping assembly comprises a guide frame and plug blocks, the guide frame is connected to the inner rear side of the furnace body, and at least four plug blocks are insertedly connected in the guide frame and connected with the placement plate.

[0011] The utility model has the advantages that the utility model is provided with silicon carbide ceramic plate, connecting shell, locking assembly and unlocking assembly, locks and fixes the silicon carbide ceramic plate through the clamping mode of the clamping block, and is simple and convenient to install and disassemble, does not need to use complex tools to assist, can reduce the artificial cost and the time cost of production stagnation, can also reduce the risk of damaging the silicon carbide ceramic plate and the furnace body due to improper operation in the installation process. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0013] Figure 2 It is a furnace body cross section schematic view of the utility model;

[0014] Figure 3 It is a heat preservation frame cross section schematic view of the utility model;

[0015] Figure 4 It is a silicon carbide ceramic plate cross section schematic view of the utility model;

[0016] Figure 5 It is an A part enlarged schematic view of the utility model;

[0017] Figure 6 It is a guide frame cross section schematic view of the utility model.

[0018] In the drawing: 1-furnace body, 2-heat preservation door, 3-heat preservation frame, 4-fixed frame, 5-U-shaped silicon molybdenum rod, 6-ceramic fiber cotton, 7-silicon carbide ceramic plate, 8-connecting shell, 9-clamping block, 10-spring, 11-connecting block, 12-guide rod, 13-top block, 14-guide frame, 15-plug block, 16-placement plate. CONCRETE IMPLEMENTATION

[0019] The utility model will be further described in combination with specific embodiments.

[0020] A heat treatment furnace for metal heat treatment, such as Figures 1-6 As shown, it comprises a furnace body 1, a heat preservation door 2, a heat preservation frame 3, a fixed frame 4, a U-shaped silicon molybdenum rod 5, a ceramic fiber cotton 6, a silicon carbide ceramic plate 7, a clamping assembly, a placing plate 16, a connecting shell 8, a locking assembly and an unlocking assembly, the front side of the furnace body 1 is open, two heat preservation doors 2 are hingedly connected to the front side of the furnace body 1, the inner wall of the furnace body 1 is fixedly connected with the heat preservation frame 3, the front and rear sides of the heat preservation frame 3 are open, the inner wall of the heat preservation frame 3 is fixedly connected with the fixed frame 4, the U-shaped silicon molybdenum rod 5 is fixedly connected between the fixed frame 4 and the heat preservation frame 3, the ceramic fiber cotton 6 is fixedly connected between the furnace body 1 and the heat preservation frame 3, the ceramic fiber cotton 6 serves as the lining material of the heat treatment furnace, effectively reducing the heat loss of the heat treatment furnace, the inner wall of the fixed frame 4 is connected with two connecting shells 8 and two unlocking assemblies on the left and right sides, the connecting shell 8 is connected with the locking assembly, the inner wall of the fixed frame 4 is connected with the silicon carbide ceramic plate 7 through the locking assembly, the silicon carbide ceramic plate 7 is provided with through holes for the U-shaped silicon molybdenum rod 5 to pass through, the silicon carbide ceramic plate 7 has high hardness, high strength, good wear resistance and excellent corrosion resistance, and also has high thermal conductivity and excellent high-temperature resistance, the inner rear side of the furnace body 1 is connected with the clamping assembly, the clamping assembly is connected with the placing plate 16, and the placing plate 16 is provided with honeycomb holes for heat to pass through.

[0021] As shown in Figure 4 and Figure 5 , the locking assembly comprises a clamping block 9, a spring 10 and a connecting block 11, the connecting shell 8 is slidingly connected with the clamping block 9, the spring 10 is fixedly connected between the clamping block 9 and the connecting shell 8, and the clamping block 9 is fixedly connected with the connecting block 11 on the front and rear sides, and the clamping block 9 is clampedly connected with the through hole of the silicon carbide ceramic plate 7.

[0022] As shown in Figures 3-5 , the unlocking assembly comprises a guide rod 12 and a top block 13, the front and rear sides of the inner wall of the fixed frame 4 are slidingly connected with two guide rods 12, the guide rods 12 are symmetrically arranged upward and downward, the top block 13 is slidingly connected with the guide rod 12, the top blocks 13 are fixedly connected with each other, the side close to the connecting block 11 of the top block 13 is provided with an inclined surface, the area of the side close to the connecting block 11 of the top block 13 is smaller than that of the side away from the connecting block 11, and the connecting block 11 is in contact with the inclined surface of the top block 13.

[0023] As shown in Figure 6 , the clamping assembly comprises a guide frame 14 and an insertion block 15, the inner rear side of the furnace body 1 is fixedly connected with the guide frame 14, and the guide frame 14 is insertedly connected with four insertion blocks 15, and the insertion block 15 is fixedly connected with the placing plate 16.

[0024] At the beginning, the spring 10 is normal, when the metal needs to be heat treated, open the heat preservation door 2, place the metal on the placing plate 16, close the heat preservation door 2, and the U-shaped silicon molybdenum rod is powered on, so that the inside of the furnace body 1 is heated through the U-shaped silicon molybdenum rod, when the silicon carbide ceramic plate 7 is damaged and needs to be replaced, open the heat preservation door 2, move the placing plate 16 upwards to make the plug 15 disengage from the guide frame 14, so that the placing plate 16 is disassembled, and then the top block 13 is slid along the guide rod 12 to be close to the clamping block 9, so that the inclined surface of the top block 13 extrudes the connecting block 11, so that the connecting block 11 drives the upper and lower clamping blocks 9 to slide away from each other, and the spring 10 is compressed, and the clamping block 9 is disengaged from the silicon carbide ceramic plate 7, then the silicon carbide ceramic plate 7 is moved close to the guide frame 14, and the silicon carbide ceramic plate 7 is moved forward to be taken out from the front opening of the furnace body 1, the top block 13 is loosened, the spring 10 is restored to its original state, the connecting block 11 is extruded to reset the top block 13, so that the disassembly of the silicon carbide ceramic plate 7 is completed, when a new silicon carbide ceramic plate 7 needs to be installed, the new silicon carbide ceramic plate 7 is placed into the front opening of the furnace body 1, so that the new silicon carbide ceramic plate 7 is located between the fixed frame 4 and the guide frame 14, the top block 13 is pulled to slide along the guide rod 12 to be close to the clamping block 9, so that the upper and lower clamping blocks 9 are moved away from each other, the silicon carbide ceramic plate 7 is moved close to the inner wall of the fixed frame 4, so that the clamping block 9 is located in the through hole of the silicon carbide ceramic plate 7, the clamping block 9 is loosened, the spring 10 is restored to its original state, and the clamping block 9 is clamped with the through hole under the action of the elastic force of the spring 10, so that the installation of the silicon carbide ceramic plate 7 is completed, the installation and disassembly are simple and convenient, without the need of using complex tools for assistance, the artificial cost and the time cost of production stagnation can be reduced, and the risk of damage to the silicon carbide ceramic plate 7 and the furnace body 1 caused by improper operation in the installation process can be reduced.

[0025] The above only describes the preferred embodiments of the present application, and it should be pointed out that those skilled in the art can make some improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A heat treatment furnace for metal heat treatment, comprising a furnace body (1) and heat-insulating doors (2), wherein the front side of the furnace body (1) is open, and two heat-insulating doors (2) are hinged to the front side of the furnace body (1), characterized in that, It also includes an insulation frame (3), a fixing frame (4), a U-shaped silicon molybdenum rod (5), a silicon carbide ceramic plate (7), a snap-fit ​​assembly, a placement plate (16), a connecting shell (8), a locking assembly, and an unlocking assembly. The inner wall of the furnace body (1) is connected to the insulation frame (3). The front and rear sides of the insulation frame (3) are open. The inner wall of the insulation frame (3) is connected to the fixing frame (4). The U-shaped silicon molybdenum rod (5) is connected between the fixing frame (4) and the insulation frame (3). The left and right sides of the inner wall of the fixing frame (4) are connected to at least two connecting shells (8) and at least two unlocking assemblies. The connecting shells (8) are all connected to locking assemblies. The inner wall of the fixing frame (4) is connected to the silicon carbide ceramic plate (7) through the locking assembly. The rear side of the furnace body (1) is connected to the snap-fit ​​assembly. The placement plate (16) is connected to the snap-fit ​​assembly.

2. A heat treatment furnace for metal heat treatment according to claim 1, characterized in that, It also includes ceramic fiber cotton (6), and ceramic fiber cotton (6) is connected between the furnace body (1) and the insulation frame (3).

3. A heat treatment furnace for metal heat treatment according to claim 2, characterized in that, The locking assembly includes a locking block (9), a spring (10), and a connecting block (11). The locking block (9) is slidably connected inside the connecting shell (8). The spring (10) is connected between the locking block (9) and the connecting shell (8). The connecting block (9) is connected to the front and rear sides of the locking block (9). The locking block (9) is snapped into the silicon carbide ceramic plate (7).

4. A heat treatment furnace for metal heat treatment according to claim 3, characterized in that, The unlocking component includes guide rods (12) and top blocks (13). At least two guide rods (12) are slidably connected to the front and rear sides of the left and right inner walls of the fixed frame (4). The guide rods (12) are arranged symmetrically up and down. Top blocks (13) are slidably connected to the guide rods (12). The upper and lower top blocks (13) are connected to each other.

5. A heat treatment furnace for metal heat treatment according to claim 4, characterized in that, The side of the top block (13) near the connecting block (11) is set as an inclined surface. The area of ​​the side of the top block (13) near the connecting block (11) is smaller than the side away from the connecting block (11). The connecting blocks (11) are all in contact with the inclined surface of the top block (13).

6. A heat treatment furnace for metal heat treatment according to claim 5, characterized in that, The snap-fit ​​assembly includes a guide frame (14) and inserts (15). The guide frame (14) is connected to the rear side of the furnace body (1). At least four inserts (15) are inserted into the guide frame (14), and each insert (15) is connected to the placement plate (16).

Images