Die steel heat treatment equipment

Abstract

The utility model discloses die steel heat treatment equipment, and relates to the technical field of die steel processing. The quenching furnace comprises a horizontally-arranged supporting plate, a cylindrical quenching furnace body is fixedly installed on the supporting plate, and the two ends of the quenching furnace body are connected with a sealing cover capable of being opened and closed through hinges and movably provided with a connecting cover through hinges respectively. According to the quenching furnace, the quenching furnace body is designed to be of a gradually-shrunk type polished inner wall structure, and is matched with the air supply mechanism arranged on the connecting cover in the bottom air outlet direction, so that oxide skin and metal scraps generated in the machining process can automatically slide to the end of the sealing cover under the dual action of gravity and airflow; and meanwhile, the sliding fixing base driven by the push-pull mechanism and the placement frame structure avoid the defect of shutdown cleaning of traditional equipment, and the heating resistor ring realizes more uniform heat conduction in the clean furnace chamber without chipping interference, so that the continuous operation capability and the energy efficiency utilization rate of the equipment are remarkably improved while the heat treatment quality is ensured.

Description

Technical Field

[0001] This utility model relates to the field of mold steel processing technology, and specifically to a mold steel heat treatment equipment. Background Technology

[0002] Die steel is a type of steel used to manufacture molds such as cold stamping dies, hot forging dies, and die casting molds. In order to improve the hardness of the mold, die steel often needs to be quenched.

[0003] Traditional mold steel heat treatment equipment produces residues such as oxide scale and metal shavings during processing. Conventional quenching furnaces often use a straight cylindrical or constant diameter design, which makes it easy for shavings to accumulate at the bottom of the furnace and difficult to remove. The accumulation of shavings affects heat transfer and thus increases energy loss.

[0004] Therefore, a heat treatment device for mold steel is proposed. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a heat treatment equipment for mold steel.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A heat treatment device for mold steel includes a horizontally arranged support plate on which a cylindrical quenching furnace body is fixedly mounted. Both ends of the furnace body are respectively connected by hinges to an openable sealing cover and a movably mounted connecting cover. A gas supply mechanism for providing protective gas is provided on the outer side of the furnace body. A fixed seat is slidably arranged axially inside the furnace body. A placement frame for placing mold steel is fixedly connected to the side of the fixed seat facing the sealing cover. A push-pull mechanism for pushing the placement frame to move axially along the furnace body is provided on the connecting cover. Multiple heating resistance rings for heating mold steel parts are evenly distributed on the inner wall of the furnace body. A controller for controlling the device is provided on the outer side of the sealing cover.

[0008] Furthermore, the inner wall of the quenching furnace body is a polished surface, and its cross-section has a gradually changing structure, with a tapering design from the end connected to the sealing cover to the end connected to the connecting cover.

[0009] Furthermore, the gas output end of the gas supply mechanism is located on the connecting cover, and its gas output direction is aligned with the internal bottom position of the quenching furnace body.

[0010] Furthermore, the push-pull mechanism includes a mounting bracket fixedly installed on the outside of the connecting cover, an electric telescopic rod disposed on the mounting bracket, and a connecting push-pull rod connecting the telescopic end of the electric telescopic rod to the fixed seat.

[0011] Furthermore, the interior of the quenching furnace body is symmetrically provided with two slide rails parallel to its central axis, and the side of the fixed seat is provided with a slider that cooperates with the slide rails.

[0012] Furthermore, the heating resistance rings are designed with a constant diameter, and the center point of all heating resistance rings is precisely located on the central axis of the quenching furnace body.

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

[0014] This invention designs the quenching furnace body with a tapered polished inner wall structure, and combines it with a bottom-outlet air supply mechanism on the connecting cover. This allows the oxide scale and metal debris generated during processing to automatically slide towards the sealing cover under the combined action of gravity and airflow. At the same time, the sliding fixed seat and placement frame structure driven by the push-pull mechanism avoids the drawbacks of traditional equipment requiring shutdown for cleaning. The heating resistance ring achieves more uniform heat conduction in the clean furnace cavity free from debris interference, thereby significantly improving the continuous operation capability and energy efficiency of the equipment while ensuring the quality of heat treatment. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is the first sectional view of the present invention;

[0017] Figure 3 This is the second sectional view of the present invention.

[0018] Reference numerals in the attached drawings: 1. Support plate; 2. Quenching furnace body; 3. Sealing cover; 4. Connecting cover; 5. Mounting bracket; 501. Electric telescopic rod; 502. Connecting push-pull rod; 6. Gas supply mechanism; 7. Slide rail; 8. Fixed base; 801. Slider; 9. Placement frame; 10. Heating resistance ring. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. 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.

[0023] like Figure 1-3As shown, a heat treatment device for mold steel includes a horizontally arranged support plate 1. A cylindrical quenching furnace body 2 is fixedly installed on the support plate 1. Both ends of the quenching furnace body 2 are respectively connected by hinges to an openable sealing cover 3 and a movably assembled connecting cover 4. A vacuuming device is also connected to the connecting cover 4 or the quenching furnace body 2 via a connecting pipe. The connecting cover 4 can be fixed at one end of the quenching furnace body 2 by bolts or other methods; the connection method is not limited here. The sealing cover 3 is used to seal the furnace body during heat treatment to prevent gas leakage, and also allows for loading and unloading at this end. A gas supply mechanism 6 for providing protective gas is provided on the outside of the quenching furnace body 2. A fixed seat 8 is slidably arranged axially inside the quenching furnace body 2. A device for providing protective gas is fixedly connected to the side of the fixed seat 8 facing the sealing cover 3. A placement frame 9 for placing mold steel is provided. The fixed seat 8 slides on the slide rail 7 via a slider 801 to ensure that the placement frame 9 can move smoothly along the axial direction. A push-pull mechanism is provided on the connecting cover 4 to push the placement frame 9 to move along the axial direction of the quenching furnace body. Multiple heating resistance rings 10 for heating mold steel parts are evenly distributed on the inner wall of the quenching furnace body 2. The heating resistance rings 10 are evenly distributed on the inner wall of the quenching furnace body 2 to provide the heat energy required for heating the mold steel. They can be installed on the inner wall of the quenching furnace body 2 by welding or other means. Their support frame is distributed in the upper half of the inner wall of the quenching furnace body 2 to avoid obstruction of debris, etc. A controller for controlling the equipment is provided on the outside of the sealing cover 3. The electrical components in the equipment are electrically connected to the controller to facilitate the control of the internal electrical components.

[0024] like Figure 2-3 As shown, the inner wall of the quenching furnace body 2 is a polished surface with a gradually changing cross-section, tapering from the end connected to the sealing cover 3 to the end connected to the connecting cover 4. Specifically, the polished surface helps reduce heat loss and improve heat treatment efficiency, while preventing the accumulation of impurities on the inner wall and ensuring a clean heat treatment environment. The tapering structure allows debris to slide automatically towards the sealing cover 3 under gravity after falling off. When feeding materials, impurities can also fall off automatically without the need for cleaning, ensuring the cleanliness of the inner wall of the quenching furnace body 2.

[0025] like Figure 2 As shown, the gas output end of the gas supply mechanism 6 is located on the connecting cover 4, and its gas output direction is matched with the internal bottom position of the quenching furnace body 2. Specifically, the gas output end is located on the connecting cover 4, which facilitates connection with the external gas supply system and does not affect the opening and closing operation of the sealing cover 3. The gas output direction is matched with the bottom, so when blowing air to release pressure, the gas is blown to the bottom of the quenching furnace body 2, which can accelerate the downward fall of debris and facilitate the cleaning of debris.

[0026] like Figure 2 As shown, the push-pull mechanism includes a mounting bracket 5 fixedly installed on the outside of the connecting cover 4, an electric telescopic rod 501 set on the mounting bracket 5, and a connecting push-pull rod 502 connecting the telescopic end of the electric telescopic rod 501 to the fixed seat 8. Specifically, the connecting push-pull rod 502 is made of a high-temperature resistant material with poor thermal conductivity, which can reduce heat loss. The telescopic extension of the electric telescopic rod 501 can push the fixed seat 8 to move, thereby facilitating the movement of the placement frame 9 and thus facilitating the loading and unloading of mold steel parts.

[0027] like Figure 3 As shown, two slide rails 7 parallel to their central axis are symmetrically arranged inside the quenching furnace body 2. The side of the fixed seat 8 is provided with a slider 801 that cooperates with the slide rails 7. Specifically, the sliding cooperation method ensures that the fixed seat 8 can slide smoothly along the axial direction of the quenching furnace body 2, avoiding deviation or jamming during the pushing and pulling process, and ensuring smooth entry and exit of the placement frame 9. A connecting frame is connected to the slide rail 7, and the connecting frame and the slide rail 7 form a U-shaped structure, which is fixed inside the quenching furnace body 2 by welding or bolting.

[0028] like Figure 2-3 As shown, the heating resistance rings 10 are designed with equal diameters, and the center points of all heating resistance rings 10 are precisely located on the central axis of the quenching furnace body 2; specifically, the center points are located on the central axis. This layout further ensures the symmetry of heat distribution, making the mold steel more uniformly heated during the heat treatment process and improving the heat treatment quality.

[0029] In summary: The cylindrical quenching furnace body 2 on the support plate 1 forms a sealed space through the sealing cover 3 and the connecting cover 4. After vacuuming, the uniformly distributed heating resistance rings 10 symmetrically heat the mold steel parts around the central axis to achieve heat treatment. After processing, protective gas is injected through the gas supply mechanism 6. The tapered polished inner wall design, combined with the gas outlet at the bottom of the connecting cover 4, causes the debris to automatically slide towards the end of the sealing cover 3. The electric telescopic rod 501 drives the fixed seat 8 to move along the slide rail 7 through the high-temperature resistant push-pull rod 502, which drives the placement frame 9 to enter and exit the furnace body to complete loading and unloading. The cooperation between the slider 801 and the slide rail 7 ensures the stable sliding of the placement frame 9. The controller coordinates the various components to achieve vacuum quenching, gas protection and self-cleaning functions.

[0030] 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. A heat treatment device for mold steel, characterized in that: The furnace includes a horizontally arranged support plate (1), on which a cylindrical quenching furnace body (2) is fixedly installed. Both ends of the quenching furnace body (2) are respectively connected by hinges to an openable sealing cover (3) and a movable connecting cover (4). A gas supply mechanism (6) for providing protective gas is provided on the outside of the quenching furnace body (2). A fixed seat (8) is slidably arranged along the axial direction inside the quenching furnace body (2). A placement frame (9) for placing mold steel is fixedly connected to the side of the fixed seat (8) facing the sealing cover (3). A push-pull mechanism for pushing the placement frame (9) to move along the axial direction of the quenching furnace body is provided on the connecting cover (4). Multiple heating resistance rings (10) for heating mold steel parts are evenly distributed on the inner wall of the quenching furnace body (2). A controller for controlling the equipment is provided on the outside of the sealing cover (3).

2. The mold steel heat treatment equipment according to claim 1, characterized in that, The inner wall of the quenching furnace body (2) is a polished surface, and its cross-section has a gradient structure, with a tapering design from the end connected to the sealing cover (3) to the end connected to the connecting cover (4).

3. The mold steel heat treatment equipment according to claim 1, characterized in that, The gas output end of the gas supply mechanism (6) is located on the connecting cover (4), and its gas output direction is matched with the internal bottom position of the quenching furnace body (2).

4. The mold steel heat treatment equipment according to claim 1, characterized in that, The push-pull mechanism includes a mounting bracket (5) fixedly installed on the outside of the connecting cover (4), an electric telescopic rod (501) set on the mounting bracket (5), and a connecting push-pull rod (502) connecting the telescopic end of the electric telescopic rod (501) to the fixed seat (8).

5. The heat treatment equipment for mold steel according to claim 1, characterized in that, The interior of the quenching furnace body (2) is symmetrically provided with two slide rails (7) parallel to its central axis, and the side of the fixed seat (8) is provided with a slider (801) that cooperates with the slide rails (7).

6. The mold steel heat treatment equipment according to claim 1, characterized in that, The heating resistance rings (10) are designed with equal diameters, and the center point of all heating resistance rings (10) is precisely located on the central axis of the quenching furnace body (2).

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