Annealing device for hot work die steel

Abstract

The utility model discloses a kind of hot work die steel annealing device, it is related to metal heat treatment technical field, including heat preservation tank, the bottom side inner wall of heat preservation tank is fixedly connected with pillar, the upper end of the pillar is fixedly connected with annealing furnace, the bottom side inner wall of annealing furnace is fixedly connected with four symmetrically distributed mounting columns, the outer surface of the opposite side of four mounting columns is sequentially provided with first installation groove, second installation groove, third installation groove and fourth installation groove from below to above, the size of first installation groove, second installation groove, third installation groove and fourth installation groove increases gradually, the inside of first installation groove, second installation groove, third installation groove and fourth installation groove is slidably connected with first placing rack, second placing rack, third placing rack and fourth placing rack, the utility model has the advantages that: multiple independent placing rack effectively avoids the irreversible deformation of workpiece under high-temperature softening state due to compression.

Description

Technical Field

[0001] This utility model relates to the field of metal heat treatment technology, specifically to an annealing device for hot work die steel. Background Technology

[0002] Hot work die steel is a type of steel used to manufacture dies that undergo deformation processing at high temperatures, such as die-casting dies and hot forging dies. This type of steel typically contains high levels of alloying elements such as chromium, tungsten, molybdenum, and vanadium, giving it excellent high-temperature strength, red hardness, and resistance to thermal fatigue. Annealing is an essential heat treatment process in the production and repair of hot work die steel. Its main purpose is to reduce the hardness of the steel, eliminate internal stress, homogenize the chemical composition and microstructure, and refine the grains, thus laying a good microstructure foundation for subsequent processing and final heat treatment.

[0003] In traditional hot work die steel annealing equipment, when placing workpieces, the upper workpiece tends to press down on the lower one, which can cause irreversible deformation, uneven structure, or performance defects in the workpiece due to stress. To address these issues, a new hot work die steel annealing equipment is proposed. Utility Model Content

[0004] To solve the above-mentioned technical problems, a hot work die steel annealing device is provided. This technical solution solves the problem mentioned in the background art of irreversible deformation of the workpiece caused by the upper workpiece pressing the lower workpiece during the placement process of the hot work die steel annealing device.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An annealing device for hot work die steel includes a heat-insulating tank. A support column is fixedly connected to the inner wall of the bottom side of the heat-insulating tank. An annealing furnace is fixedly connected to the upper end of the support column. Four symmetrically distributed mounting columns are fixedly connected to the inner wall of the bottom side of the annealing furnace. The outer surfaces of the four mounting columns on opposite sides are provided with a first mounting groove, a second mounting groove, a third mounting groove, and a fourth mounting groove from bottom to top. The dimensions of the first mounting groove, the second mounting groove, the third mounting groove, and the fourth mounting groove increase sequentially. A corresponding first placement frame, a second placement frame, a third placement frame, and a fourth placement frame are slidably connected inside the first mounting groove, the second mounting groove, the third mounting groove, and the fourth mounting groove, respectively.

[0006] Preferably, the outer surface of the heat preservation tank is connected to an air inlet, and the outer surface of the heat preservation tank, located above the air inlet, is connected to an air outlet.

[0007] Preferably, the outer surface of the annealing furnace is covered with heating elements.

[0008] Preferably, the upper ends of the four mounting columns are fixedly connected to a fixing bracket.

[0009] Preferably, a connecting ring is fixedly connected between the inner wall of the top side of the heat preservation tank and the upper surface of the annealing furnace, and a sealing cap is connected to the internal thread of the connecting ring.

[0010] Preferably, an insulation board is fixedly connected to the lower end of the sealing cover, and a rotating handle is fixedly connected to the upper surface of the sealing cover.

[0011] Compared with the prior art, this utility model provides an annealing device for hot work die steel, which has the following beneficial effects: This utility model sets up multiple independent placement racks, and the weight of each placement rack and the workpiece on it is directly borne by the structure of the annealing furnace. The layers do not stack on each other, eliminating the pressure of the upper workpiece on the lower workpiece, and effectively avoiding irreversible deformation of the workpiece due to pressure in the high-temperature softening state. Attached Figure Description

[0012] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the mounting column in this utility model; Figure 4 This is a schematic diagram showing the connection of the heating element in this utility model.

[0013] The numbers on the map are: 1. Insulated container; 2. Air inlet; 3. Air outlet; 4. Support column; 5. Annealing furnace; 6. Heating element; 7. Mounting column; 8. Fixing bracket; 9. First mounting slot; 10. Second mounting slot; 11. Third mounting slot; 12. Fourth mounting slot; 13. First placement rack; 14. Second placement rack; 15. Third placement rack; 16. Fourth placement rack; 17. Connecting ring; 18. Sealing cap; 19. Insulation board; 20. Rotating handle. Detailed Implementation

[0014] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0015] Reference Figures 1-4 As shown, a hot work die steel annealing device includes a heat preservation tank 1, which serves as the main outer shell of the device. Its sealed internal space forms a heat-insulating cavity, which is used to reduce internal heat loss during the heating stage and ensure the temperature uniformity and stability of the annealing process. A support column 4 is fixedly connected to the bottom inner wall of the heat preservation tank 1, and an annealing furnace 5 is fixedly connected to the upper end of the support column 4. The annealing furnace 5 is the core cavity for annealing heating, and the workpiece is directly placed inside it for heating.

[0016] Furthermore, four symmetrically distributed mounting columns 7 are fixedly connected to the bottom inner wall of the annealing furnace 5. These four symmetrically distributed mounting columns 7 together form a multi-layered support frame. Mounting slots of different sizes are opened on their sides to independently support racks of different sizes in layers. From bottom to top, the outer surfaces of the four mounting columns 7 are sequentially provided with a first mounting slot 9, a second mounting slot 10, a third mounting slot 11, and a fourth mounting slot 12. The dimensions of the first mounting slot 9, the second mounting slot 10, the third mounting slot 11, and the fourth mounting slot 12 increase sequentially. The third mounting slot 11 and the fourth mounting slot 12 are respectively slidably connected to the first placement rack 13, the second placement rack 14, the third placement rack 15 and the fourth placement rack 16. The placement racks are all grid or mesh structure. Each mounting slot independently bears the entire weight of its corresponding placement rack and the workpiece in that layer. The force is directly transmitted to the mounting column 7 and the annealing furnace 5, rather than to the workpiece in the lower layer. Larger placement racks are installed in higher slots, which facilitates the storage and retrieval of workpieces of different sizes and enables layered management. The grid or mesh structure of the placement racks helps the hot air to circulate, making the workpieces more evenly heated and cooled.

[0017] Furthermore, the outer surface of the heat preservation tank 1 is connected to an air inlet 2, and the outer surface of the heat preservation tank 1 above the air inlet 2 is connected to an air outlet 3. The air inlet 2 is used to introduce auxiliary heat dissipation gas into the heat preservation tank 1 during the annealing cooling stage to accelerate the dissipation of heat in the furnace and control the cooling rate of the workpiece. The air outlet 3 is used to discharge the high-temperature gas in the tank during the air circulation process, forming an airflow circulation and improving heat dissipation efficiency.

[0018] Furthermore, the outer surface of the annealing furnace 5 is covered with heating elements 6, which are the heat source of the device. They conduct heat to the interior of the annealing furnace 5 by being energized, thereby heating the workpiece.

[0019] Furthermore, the upper ends of the four mounting columns 7 are fixedly connected to the fixing brackets 8, which are connected to the top ends of the four mounting columns 7, thereby enhancing the structural strength and stability of the entire support frame and preventing the mounting columns 7 from deforming or shifting due to heat or load.

[0020] Furthermore, a connecting ring 17 is fixedly connected between the inner wall of the top side of the heat preservation tank 1 and the upper surface of the annealing furnace 5. A sealing cap 18 is connected to the internal thread of the connecting ring 17. A heat preservation plate 19 is fixedly connected to the lower end of the sealing cap 18. After the tank lid is closed, the heat preservation plate 19 further seals the top opening of the annealing furnace 5, reduces heat loss from the top, and helps maintain a uniform temperature inside the furnace. A rotating handle 20 is fixedly connected to the upper surface of the sealing cap 18. The rotating handle 20 provides a force application point, making it easy for operators to rotate and tighten or open the heavy sealing cap 18 with minimal effort.

[0021] Working Principle: When using this utility model, first connect the external power supply of the device, place the workpiece evenly on the placement rack, and push the placement rack carrying the workpiece horizontally into the corresponding first installation slot 9, second installation slot 10, third installation slot 11 and fourth installation slot 12 in the annealing furnace 5. Cover with the sealing cover 18, and tighten it in the connecting ring 17 by rotating the rotating handle 20 to seal the device. Start the heating element 6 and heat treat the workpiece according to the preset annealing process curve. During this stage, the device is in a sealed state. After the heating program is completed, when cooling needs to be controlled, open the air outlet 3 and introduce auxiliary heat dissipation gas from the air inlet 2 to force the hot gas in the tank to be discharged and accelerate the cooling of the workpiece. The gas flow rate can be adjusted according to the process requirements or natural cooling can be selected. After the temperature in the furnace has cooled to a safe range, stop the gas supply, open the sealing cover 18, and pull out each placement rack in sequence to take out the processed workpiece.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An annealing apparatus for hot work die steel, characterized in that, The device includes a heat preservation tank (1), on which a support column (4) is fixedly connected to the bottom inner wall. An annealing furnace (5) is fixedly connected to the upper end of the support column (4). Four symmetrically distributed mounting columns (7) are fixedly connected to the bottom inner wall of the annealing furnace (5). The outer surfaces of the four mounting columns (7) on opposite sides are provided with a first mounting groove (9), a second mounting groove (10), a third mounting groove (11), and a fourth mounting groove (12) from bottom to top. The dimensions of the first mounting groove (9), the second mounting groove (10), the third mounting groove (11), and the fourth mounting groove (12) increase sequentially. The first mounting groove (9), the second mounting groove (10), the third mounting groove (11), and the fourth mounting groove (12) are respectively slidably connected to a first placement rack (13), a second placement rack (14), a third placement rack (15), and a fourth placement rack (16).

2. The annealing apparatus for hot work die steel according to claim 1, characterized in that: The outer surface of the heat preservation tank (1) is connected to an air inlet (2), and the outer surface of the heat preservation tank (1) is connected to an air outlet (3) above the air inlet (2).

3. The annealing apparatus for hot work die steel according to claim 1, characterized in that: The outer surface of the annealing furnace (5) is covered with heating elements (6).

4. The annealing apparatus for hot work die steel according to claim 1, characterized in that: The upper ends of the four mounting columns (7) are fixedly connected to the fixing brackets (8).

5. The annealing apparatus for hot work die steel according to claim 1, characterized in that: A connecting ring (17) is fixedly connected between the inner wall of the top side of the heat preservation tank (1) and the upper surface of the annealing furnace (5), and a sealing cap (18) is threaded inside the connecting ring (17).

6. The annealing apparatus for hot work die steel according to claim 5, characterized in that: The lower end of the sealing cover (18) is fixedly connected to an insulation board (19), and the upper surface of the sealing cover (18) is fixedly connected to a rotating handle (20).

Images