A steel material heat treatment device

Abstract

The utility model discloses a steel heat treatment device, including the work tank, the inside of work tank is divided with heat treatment area and cooling area through the baffle, and the top of heat treatment area and cooling area is equipped with a plurality of auxiliary roll through bearing. Advantageous effect: divide heat treatment area and cooling area in the work tank, make steel material not need shift between independent heating equipment and cooling equipment, complete the whole process processing from heating to cooling directly in the same work tank, avoid the time loss and heat loss caused by the traditional equipment transfer. In the heat treatment area, the electromagnetic heating system that high -frequency heating machine and electromagnetic heating ring constitute, can quickly convert high -frequency current into the alternating magnetic field, make steel material realize self -heating through eddy current effect, can heat steel material to target temperature in short time, and in the cooling area, the circulating cold water that cold water tank provides forms high -efficient heat exchange channel through the serpentine heat exchange pipe, cooperates the air flow of blower and accelerates, and the heat of steel material is taken away quickly.

Description

Technical Field

[0001] This utility model relates to the field of metal processing, and more specifically, to a heat treatment device for steel. Background Technology

[0002] In the field of metal processing, heat treatment of steel has always been a key step in improving the performance of steel and has received much attention.

[0003] Traditional steel heat treatment processes often rely on independent heating and cooling equipment. Because the heating and cooling equipment are independent of each other, the transfer of steel between the two not only takes a lot of time but also causes a lot of heat loss. This not only prolongs the overall process cycle but also increases energy costs. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a steel heat treatment device that has the advantages of high synergy between heating and cooling, good heating and cooling effects, and low cost, thereby solving the problems mentioned in the background technology.

[0005] (II) Technical Solution To achieve the advantages of high synergy between heating and cooling, good heating and cooling effects, and low cost, the specific technical solution adopted by this utility model is as follows: A steel heat treatment device includes a working box. The interior of the working box is divided into a heat treatment zone and a cooling zone by a partition. Several auxiliary rollers are installed above the heat treatment zone and the cooling zone by bearings. A drive roller is installed at the leftmost end of the auxiliary rollers by a bearing. A high-frequency heater is fixedly installed on the side of the working box corresponding to the heat treatment zone. An electromagnetic heating coil is provided on the upper surface of the high-frequency heater. An isolation cover is installed around the electromagnetic heating coil of the high-frequency heater. A grid plate is welded in the cooling zone. A serpentine heat exchange tube is installed on the top surface of the grid plate. Several blowers are installed at equal intervals on the bottom surface of the grid plate. A cold water tank is fixedly installed on the side of the working box corresponding to the cooling zone. The cold water tank is connected to both ends of the serpentine heat exchange tube. A water pump is installed at the connection between the cold water tank and one end of the serpentine heat exchange tube.

[0006] Furthermore, both sides of the isolation cover have reserved steel passage openings, and two guide plates are installed parallel to each other on both sides of the isolation cover. A first slider is provided at the end of the guide plate away from the isolation cover, and a second slider is provided at the end of the guide plate close to the isolation cover. A first groove is opened at the edge of the top surface of the work box corresponding to the first slider, and a second groove is opened on the surface of the isolation cover corresponding to the second slider.

[0007] Furthermore, a geared motor is fixed to the left end of the working box by bolts, and a transmission belt is provided at the output end of the geared motor and wound around the end of the drive roller shaft. A square transition plate is welded to the left end of the working box, and the transition plate is located above the geared motor. The installation height of the transition plate matches the installation height of the drive roller and the auxiliary roller.

[0008] Furthermore, the active roller and several auxiliary rollers are arranged at equal intervals along the length of the working box, and the active roller and several auxiliary rollers have the same size.

[0009] Furthermore, the end of the isolation cover away from the high-frequency heating machine has an open structure, and a gap is reserved between the bottom of the isolation cover and the auxiliary roller.

[0010] Furthermore, the guide plate is provided in two sets, and the two sets of guide plates are spaced at the same distance, and a gap is reserved between the two sets of guide plates and the auxiliary roller.

[0011] Furthermore, the second chute is disposed on the side of the isolation cover with the steel passage, and the length of the second chute matches the length of the first chute.

[0012] (III) Beneficial Effects Compared with the prior art, this utility model provides a steel heat treatment device, which has the following beneficial effects: (1) This utility model, by dividing the work chamber into a heat treatment zone and a cooling zone, eliminates the need for steel to be transferred between separate heating and cooling equipment. The entire process from heating to cooling is completed directly within the same work chamber, avoiding the time loss and heat loss caused by traditional equipment transfer. In the heat treatment zone, the electromagnetic heating system composed of a high-frequency heater and an electromagnetic heating coil can quickly convert high-frequency current into an alternating magnetic field, enabling the steel to generate heat through the eddy current effect, and can heat the steel to the target temperature in a short time. In the cooling zone, the circulating cold water provided by the cold water tank forms an efficient heat exchange channel through a serpentine heat exchange tube. Combined with the blower to accelerate airflow, it quickly removes the heat from the steel. This combination of electromagnetic rapid heating, circulating water cooling and air cooling, along with the integrated partition design of the work chamber, significantly improves the efficiency of batch processing of steel.

[0013] (2) In this utility model, the guide plates on both sides of the isolation cover can be adjusted in position by sliding the first slider in the first slide groove and the second slider in the second slide groove. The length of the second slide groove matches the length of the first slide groove, which can ensure that the guide plates always remain parallel. It can be adapted to steel of different widths and thicknesses, thus expanding the applicability of the device. The end of the isolation cover away from the high-frequency heating machine adopts an open structure, which allows the staff to directly inspect, clean and replace the electromagnetic heating coil through the opening without disassembling the entire isolation cover, greatly reducing the maintenance difficulty and saving maintenance time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of a steel heat treatment device according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the internal structure of the work box; Figure 3 This is a top view of the work box; Figure 4 This is a structural diagram of the isolation cover and guide plate.

[0016] In the picture: 1. Working box; 2. High-frequency heating machine; 3. Electromagnetic heating coil; 4. Isolation cover; 5. Transition plate; 6. Gear motor; 7. Drive roller; 8. Auxiliary roller; 9. Transmission belt; 10. Guide plate; 11. Heat treatment zone; 12. Cooling zone; 13. Mesh plate; 14. Blower; 15. Serpentine heat exchange tube; 16. Water pump; 17. Cold water tank; 18. First slide rail; 19. First slider; 20. Second slide rail; 21. Second slider. Detailed Implementation

[0017] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0018] According to an embodiment of the present invention, a steel heat treatment apparatus is provided.

[0019] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-4As shown, a steel heat treatment device according to an embodiment of the present invention includes a working box 1. The interior of the working box 1 is divided into a heat treatment zone 11 and a cooling zone 12 by a partition. Several auxiliary rollers 8 are mounted above the heat treatment zone 11 and the cooling zone 12 via bearings. A drive roller 7 is mounted at the leftmost end of each auxiliary roller 8 via a bearing. A reduction motor 6 is bolted to the left end of the working box 1, and a transmission belt 9, wound around the shaft end of the drive roller 7, is provided at the output end of the reduction motor 6. A high-frequency heater 2 is fixedly mounted on the side of the working box 1 corresponding to the heat treatment zone 11. An electromagnetic heating coil 3 is provided on the upper surface of the high-frequency heater 2, and an isolation cover 4 is installed around the electromagnetic heating coil 3 of the high-frequency heater 2. A grid plate 13 is welded into the cooling zone 12, and a serpentine heat exchange tube 15 is installed on the top surface of the grid plate 13. Several blowers 14 are installed at equal intervals on the bottom surface of the grid plate 13. A cold water tank 17 is fixedly installed on the side of the working box 1 corresponding to the cooling zone 12, and the cold water tank 17 is connected to both ends of the serpentine heat exchange tube 15. A water pump 16 is installed at the connection between the cold water tank 17 and one end of the serpentine heat exchange tube 15. The interior of the working box 1 is evenly divided into two independent functional areas by a vertically set partition: a heat treatment zone 11 for heating steel and a cooling zone 12 for cooling the heated steel. Both the heat treatment zone 11 and the cooling zone 12 are equipped with multiple blowers fixed inside the working box 1. Several auxiliary rollers 8 are horizontally mounted on the bearings on the wall to support and transport steel. At the leftmost end of each auxiliary roller 8, a drive roller 7 is mounted via a bearing to actively move the steel. A high-frequency heater 2 for generating high-frequency current is fixedly mounted on the outer side wall of the working box 1, corresponding to the heat treatment zone 11. An electromagnetic heating coil 3, capable of converting high-frequency current into a magnetic field to heat the steel, is installed on the upper surface of the high-frequency heater 2. An isolation cover 4 is installed around the electromagnetic heating coil 3 to insulate heat and protect it. A mesh plate 13 with dense perforations is welded to the center of the cooling zone 12. The mesh plate 13 can support… The upper components do not affect airflow, and a serpentine heat exchange tube 15 for conducting cold water to achieve heat exchange is installed on the top surface of the grid plate 13. The serpentine structure can increase the contact area with air and improve the cooling effect. Several blowers 14 for accelerating airflow to assist in cooling are installed at equal intervals on the bottom surface of the grid plate 13. A cold water tank 17 for storing cold water is fixedly installed on the side outer wall of the working box 1 at the position corresponding to the cooling area 12. The outlet and return water of the cold water tank 17 are respectively connected to the two ends of the serpentine heat exchange tube 15 through pipes to form a cold water circulation system. A water pump 16 for driving the cold water to flow in the pipe is installed at the pipe connection between the cold water tank 17 and one end of the serpentine heat exchange tube 15.

[0020] Please refer to Figure 3 and Figure 4 Both sides of the isolation cover 4 have pre-reserved steel passage openings, and two guide plates 10 are installed parallel to each other on both sides of the isolation cover 4. A first slider 19 is provided at the end of the guide plate 10 away from the isolation cover 4, and a second slider 21 is provided at the end of the guide plate 10 closer to the isolation cover 4. A first groove 18 is opened at the edge of the top surface of the work box 1 corresponding to the first slider 19, and a second groove 20 is opened on the surface of the isolation cover 4 corresponding to the second slider 21. As an important component for protecting the electromagnetic heating coil 3, the isolation cover 4 has pre-reserved steel passage openings on both opposite sides for steel to enter and exit. The size of the steel passage openings is adapted to the cross-sectional size of the steel to be processed to ensure that the steel can pass through smoothly. Two guide plates 10 are installed parallel to each other on both sides of the isolation cover 4 to guide the steel and prevent the steel from deviating. The guide plate 10 has a long strip-shaped structure. At the bottom of the guide plate 10 away from the isolation cover 4, there is a first slider 19 that can slide along a specific trajectory. At the bottom of the guide plate 10 near the isolation cover 4, there is a second slider 21 that is also used for sliding adjustment. At the edge of the top surface of the work box 1, corresponding to the position of the first slider 19, there is a first groove 18 that matches the first slider 19. The first slider 19 can slide freely in the first groove 18 to adjust the position of the guide plate 10. At the surface of the isolation cover 4, corresponding to the position of the second slider 21, there is a second groove 20 that matches the second slider 21. The second slider 21 can slide in the second groove 20. The flexible adjustment of the position of the guide plate 10 is achieved through the cooperation of the two sliders and the groove.

[0021] Please refer to Figure 1 and Figure 2 The left end of the working box 1 is fixed with a reduction motor 6 by bolts, and the output end of the reduction motor is provided with a transmission belt 9 that is wound and connected to the shaft end of the drive roller 7. A square transition plate 5 is welded to the left end of the working box 1, and the transition plate 5 is located above the reduction motor 6. The installation height of the transition plate 5 matches the installation height of the drive roller 7 and the auxiliary roller 8. The transition plate 5 is made of wear-resistant material and can withstand the friction during the steel conveying process. The installation position of the transition plate 5 is above the reduction motor 6 to avoid interference with the operation of the reduction motor 6. The installation height of the upper surface of the transition plate 5 is completely matched with the installation height of the upper surface of the drive roller 7 and the auxiliary roller 8, ensuring that the steel can smoothly transition from the transition plate 5 to the drive roller 7 and the auxiliary roller 8 without the steel getting stuck or damaged due to the height difference. The drive roller 7 can be driven to rotate synchronously through the transmission action of the transmission belt 9.

[0022] Please refer to Figure 1 and Figure 2The active roller 7 and several auxiliary rollers 8 are arranged at equal intervals along the length of the working box 1, and the active roller 7 and several auxiliary rollers 8 are the same size. This arrangement can ensure that the steel is evenly supported during the conveying process, and prevent the steel from bending and deforming due to uneven force. In addition, the outer diameter, length and surface roughness of the active roller 7 and several auxiliary rollers 8 are exactly the same, which ensures that the movement state of the steel is consistent throughout the entire conveying path, and further improves the stability of the steel processing process.

[0023] Please refer to Figure 1 , Figure 2 and Figure 4 The end of the isolation cover 4 away from the high-frequency heating machine 2 is open, and a gap is reserved between the bottom of the isolation cover 4 and the auxiliary roller 8. This open structure makes it easy for the staff to inspect, maintain and replace the electromagnetic heating coil 3, and it is also conducive to the reasonable dissipation of heat. In addition, a certain width of gap is reserved between the bottom of the isolation cover 4 and the auxiliary roller 8. The size of this gap can ensure that the auxiliary roller 8 can rotate normally without rubbing against the isolation cover 4, and can also prevent external impurities from entering the interior of the isolation cover 4 and affecting the operation of the electromagnetic heating coil 3 to a certain extent.

[0024] Please refer to Figure 3 and Figure 4 Two sets of guide plates 10 are provided, and the spacing between the two sets of guide plates 10 is the same. A gap is reserved between the two sets of guide plates 10 and the auxiliary roller 8. This arrangement can ensure that the steel can be uniformly guided when entering and exiting the isolation cover 4. An appropriate gap is reserved between the two sets of guide plates 10 and the auxiliary roller 8. This gap can prevent the guide plates 10 and the auxiliary roller 8 from colliding during operation, and also provides a certain space for slight shaking of the steel, preventing excessive friction between the steel and the guide plates 10.

[0025] Please refer to Figure 3 and Figure 4 The second slide 20 is located on the side of the isolation cover 4 with the steel passage. The length of the second slide 20 matches the length of the first slide 18. This design allows for easy adjustment of the guide plate 10 to accommodate steel of different widths. The length of the second slide 20 is perfectly matched with the length of the first slide 18. This size design ensures that the sliding distance at both ends of the guide plate 10 is consistent during adjustment, preventing the guide plate 10 from tilting due to different slide lengths. This ensures that the guide plate 10 always remains parallel and better performs its guiding function.

[0026] Working Principle: The worker places the steel to be processed on the transition plate 5 at the left end of the working box 1. The installation height of the transition plate 5 is consistent with that of the drive roller 7 and auxiliary rollers 8, ensuring that the steel can smoothly slide towards the drive roller 7. The reduction motor 6 at the left end of the working box 1 is started. The rotating shaft at the output end of the reduction motor 6 drives the drive roller 7 to rotate synchronously via the transmission belt 9. The drive roller 7 drives the steel to move using the friction between itself and the steel. Simultaneously, several auxiliary rollers 8 rotate along with the steel, providing stable support and conveying for the steel. This allows the steel to gradually enter the heat treatment zone 11 along the length of the working box 1. Once the steel enters the heat treatment zone 11, the high-frequency heater 2 installed on the side of the working box 1 corresponding to the heat treatment zone 11 is started. The high-frequency heater 2 generates a high-frequency current and transmits it to the upper electromagnetic heating coil 3. The electromagnetic heating coil 3 converts the high-frequency current into an alternating magnetic field. Eddy currents are generated in the steel within the alternating magnetic field. The thermal effect of the eddy currents causes the steel's temperature to rise rapidly, thus completing the heat treatment. During this process, the isolation cover 4 surrounding the electromagnetic heating coil 3 can isolate the high temperature generated during heating, preventing heat loss from affecting surrounding components, and protecting the electromagnetic heating coil 3 from external interference and damage. Furthermore, the guide plates 10 on both sides of the isolation cover 4 guide the steel. Through the cooperation of the first slider 19 in the first groove 18 and the second slider 21 in the second groove 20, the position of the guide plates 10 can be adjusted to ensure that steel of different sizes can pass through the electromagnetic heating coil 3 along the correct trajectory, preventing steel deviation from affecting the heating effect. The heated steel enters the cooling zone 12 under the conveying of the active roller 7 and the auxiliary roller 8. The cold water tank 17 and water pump 16 on the side of the cooling zone 12 are activated. The water pump 16 drives the cold water in the cold water tank 17 to flow through pipes into the serpentine heat exchange tube 15 on the top surface of the grid plate 13. As the cold water flows within the serpentine heat exchange tube 15, it exchanges heat with the hot air in the cooling zone 12, absorbing heat from the air and raising its own temperature. The heated water then flows back to the cold water tank 17 through pipes, forming a cold water circulation. Simultaneously, several blowers 14 on the bottom surface of the grid plate 13 are activated, accelerating the airflow within the cooling zone 12. This allows the hot air to quickly come into contact with and be cooled by the serpentine heat exchange tube 15, thereby rapidly reducing the temperature of the steel and completing the cooling process. The cooled steel continues to be conveyed by the drive roller 7 and the auxiliary roller 8, exiting from the right end of the working box 1, completing the entire steel heat treatment process.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heat treatment apparatus for steel, comprising a working chamber (1), characterized in that, The interior of the working box (1) is divided into a heat treatment zone (11) and a cooling zone (12) by a partition. Several auxiliary rollers (8) are mounted on the top of the heat treatment zone (11) and the cooling zone (12) by bearings. The leftmost end of the auxiliary rollers (8) is mounted on a drive roller (7) by a bearing. A high-frequency heater (2) is fixedly mounted on the side of the working box (1) corresponding to the heat treatment zone (11). An electromagnetic heating coil (3) is provided on the upper surface of the high-frequency heater (2). The electromagnetic heating coil (3) of the high-frequency heater (2) is located on the outside of the high-frequency heater (2). An isolation cover (4) is installed in the enclosure. A grid plate (13) is welded in the cooling zone (12). A serpentine heat exchange tube (15) is installed on the top surface of the grid plate (13). Several blowers (14) are installed at equal intervals on the bottom surface of the grid plate (13). A cold water tank (17) is fixedly installed on the side of the working box (1) corresponding to the cooling zone (12). The cold water tank (17) is connected to both ends of the serpentine heat exchange tube (15). A water pump (16) is installed at the connection between the cold water tank (17) and one end of the serpentine heat exchange tube (15).

2. The steel heat treatment apparatus according to claim 1, characterized in that, Both sides of the isolation cover (4) have steel passage openings, and two guide plates (10) are installed parallel to each other on both sides of the isolation cover (4). A first slider (19) is provided at the end of the guide plate (10) away from the isolation cover (4), and a second slider (21) is provided at the end of the guide plate (10) close to the isolation cover (4). A first groove (18) is opened at the edge of the top surface of the work box (1) corresponding to the first slider (19), and a second groove (20) is opened on the surface of the isolation cover (4) corresponding to the second slider (21).

3. The steel heat treatment apparatus according to claim 1, characterized in that, The left end of the working box (1) is fixed with a geared motor (6) by bolts, and the output end of the geared motor (6) is provided with a transmission belt (9) that is wound and connected to the shaft end of the active roller (7). The left end of the working box (1) is welded with a square transition plate (5), and the transition plate (5) is located above the geared motor (6). The installation height of the transition plate (5) matches the installation height of the active roller (7) and the auxiliary roller (8).

4. The steel heat treatment apparatus according to claim 1, characterized in that, The active roller (7) and several auxiliary rollers (8) are arranged at equal intervals along the length of the working box (1), and the active roller (7) and several auxiliary rollers (8) have the same size.

5. The steel heat treatment apparatus according to claim 1, characterized in that, The isolation cover (4) has an open structure at the end away from the high-frequency heating machine (2), and a gap is reserved between the bottom of the isolation cover (4) and the auxiliary roller (8).

6. The steel heat treatment apparatus according to claim 2, characterized in that, The guide plate (10) is provided in two sets, and the two sets of guide plates (10) are spaced at the same distance, and a gap is reserved between the two sets of guide plates (10) and the auxiliary roller (8).

7. A steel heat treatment apparatus according to claim 2, characterized in that, The second chute (20) is disposed on the side of the isolation cover (4) with the steel passage, and the length of the second chute (20) matches the length of the first chute (18).

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