A heat preservation device for ultra-fine steel wire after water bath heat treatment

Abstract

This application relates to a heat preservation device for ultrafine steel wire after water bath heat treatment, belonging to the technical field of heat preservation devices. It includes a water bath tank, on which a temperature control box is slidably mounted. The temperature control box has a top cover hinged to its top. An inlet pipe is installed at one end of the temperature control box, and an outlet pipe is installed at the other end. The temperature control box slides vertically relative to the water bath tank, with its bottom in contact with the liquid inside the tank. A heating layer is provided on the vertical inner wall of the temperature control box, and a temperature sensor is installed inside the temperature control box. This application has the effect of keeping the steel wire within the temperature range of sorbitic transformation, thereby achieving the effect of slow and complete sorbitization of the steel wire's metallographic structure.

Description

Technical Field

[0001] This application relates to the technical field of heat preservation devices, and in particular to a heat preservation device for ultra-fine steel wire after water bath heat treatment. Background Technology

[0002] Currently, in the field of metal processing, the heat treatment process of steel wire is a key step in improving its mechanical properties. Traditional steel wire heat treatment processes typically include three stages: heating, holding, and cooling.

[0003] In recent years, with the continuous improvement of the performance requirements for steel wire, especially the increasing demand for the strength and toughness of ultra-fine steel wire, traditional heat treatment processes have become insufficient to meet the production needs of high-quality steel wire. As is well known, after metal quenching, a heat treatment process is required to ensure uniform metallographic transformation. In the current situation, water quenching is carried out in two separate processes: after the first water quenching, the metal is air-cooled in an open space for a period of time before being quenched again.

[0004] Open-air cooling systems exhibit large temperature variations, making it impossible to control the temperature of the steel wire. This results in the instability of the steel wire's metallographic structure, which cannot be consistently maintained within the temperature range of the sorbite transformation. Utility Model Content

[0005] In order to keep the steel wire within the temperature range of sorbite transformation and thus achieve slow and complete sorbitization of the steel wire metallography, this application provides a heat preservation device for ultrafine steel wire after water bath heat treatment.

[0006] The heat preservation device for water bath heat treatment of ultrafine steel wire provided in this application adopts the following technical solution: A heat preservation device for ultra-fine steel wire after water bath heat treatment includes a water bath tank, a temperature control box slidably mounted on the water bath tank, a top cover hinged to the top of the temperature control box, an inlet pipe installed at one end of the temperature control box, an outlet pipe installed at the other end of the temperature control box, the temperature control box slides vertically relative to the water bath tank and its bottom is in contact with the liquid in the water bath tank, a heating layer is provided on the vertical inner wall of the temperature control box, and a temperature sensor is provided inside the temperature control box.

[0007] By adopting the above technical solution, ultrafine steel wires, after water bath heat treatment, can enter the temperature control chamber through the inlet pipe and exit through the outlet pipe, realizing the transmission of the steel wires within a closed space. The bottom of the temperature control chamber is in contact with the liquid in the water bath, providing basic insulation using the liquid's temperature. The heating layer can heat the chamber when the temperature is insufficient, and the temperature sensor can monitor the temperature inside the chamber in real time for timely adjustment, thus stabilizing the temperature within the sorbite transformation range and ensuring a uniform transformation of the steel wire's metallographic structure. Simultaneously, the temperature control chamber can slide vertically, adjusting its position according to changes in the liquid volume in the water bath to ensure the bottom remains in contact with the liquid, maintaining the stability of the insulation effect. The top cover reduces heat loss from the chamber, further improving insulation performance.

[0008] Optionally, the bottom of the temperature control box is convex, and a lifting assembly is provided between the temperature control box and the water bath. There are two lifting assemblies, which are distributed at the inlet pipe and the outlet pipe. The lifting assembly includes a motor, a gear and a rack. A column is fixed to the top of the water bath, and the motor is fixed on the column. A sliding groove is opened on the column. The output end of the motor passes through the sliding groove and is fixed to the gear. The gear meshes with the rack. The rack is slidably arranged in the sliding groove in the vertical direction. The rack is fixedly connected to the outer wall of the inlet pipe or the outer wall of the outlet pipe.

[0009] By adopting the above technical solution, the convex bottom design increases the contact area between the bottom of the temperature control box and the liquid in the water bath, improving heat transfer efficiency and making it more conducive to maintaining a stable temperature inside the box. The lifting assembly provides power and guidance for the vertical sliding of the temperature control box. The motor drives the gear to rotate, and the gear meshes with the rack, causing the rack to slide within the groove, thereby raising and lowering the temperature control box, enabling convenient adjustment of its position. Two lifting assemblies act on the inlet and outlet pipes respectively, making the raising and lowering of the temperature control box more stable, avoiding tilting due to uneven force, and ensuring smooth wire transmission.

[0010] Optionally, a water bath chamber is provided at the bottom of the temperature control box. A circulating water pump and a circulating pipe for achieving a uniform and constant liquid temperature in the water bath are provided on the water bath. The circulating pipe has branches, and the water bath chamber is connected to the branches of the circulating pipe.

[0011] By adopting the above technical solution, the cooperation of the circulating water pump and circulating pipes enables the liquid in the water bath to circulate, ensuring a uniform and constant liquid temperature and providing a stable heat source for the temperature control chamber. The branches of the circulating pipes connect to the water bath cavity, allowing the constant-temperature liquid in the water bath to enter the water bath cavity, further enhancing the insulation effect at the bottom of the temperature control chamber. Furthermore, the circulation of the liquid replenishes heat in a timely manner, reducing temperature fluctuations and maintaining the temperature inside the temperature control chamber more stably within the temperature range of sorbite transformation, which is beneficial for the complete transformation of the steel wire microstructure.

[0012] Optionally, a suspension wire is fixed between the temperature sensor and the top cover; when the top cover is closed, the temperature sensor is suspended at the center of the interior of the temperature control box.

[0013] By adopting the above technical solution, the temperature sensor is suspended by a suspension wire at the center inside the temperature control chamber. This position more accurately reflects the overall temperature inside the chamber, avoiding measurement deviations caused by the temperature sensor being close to the chamber wall or heating layer. With the top cover closed, the temperature sensor's position is fixed, ensuring the stability and accuracy of temperature monitoring. This facilitates timely temperature adjustment via the heating layer or other means based on the monitoring results, ensuring that the temperature inside the chamber remains within the suitable range for the sorbite transformation.

[0014] Optionally, a stabilizing tube is hinged at the center of the inner wall of the top cover, and a suspension line passes through the stabilizing tube.

[0015] By adopting the above technical solution, the stabilizing tube plays a limiting and guiding role for the suspension line, preventing the suspension line from swaying significantly due to airflow or other factors during steel wire transmission, thereby preventing the temperature sensor from swaying and affecting the accuracy of temperature measurement. The hinged connection allows the stabilizing tube to rotate with slight movements of the suspension line, reducing the pulling on the suspension line, ensuring the stability of the temperature sensor position, and further improving the reliability of temperature monitoring.

[0016] Optionally, a positioning rod is provided at the top of the column, one end of which is ball-jointed to the top of the column, and the other end spans the sliding groove and abuts against the top of the column; when the motor is stationary, the positioning rod spans between the corresponding adjacent teeth of the rack.

[0017] By adopting the above technical solution, when the motor is stationary, the positioning rod spans between adjacent teeth of the rack, providing positioning and fixation for the rack and preventing it from slipping due to its own weight or slight external vibrations, thus ensuring the stability of the temperature control box's position. The ball joint connection allows the positioning rod to rotate flexibly. When the temperature control box's position needs adjustment, the positioning rod can be easily rotated out from between the teeth without affecting the rack's sliding, making operation convenient. This ensures both the stability of the equipment during operation and facilitates position adjustments.

[0018] Optionally, both the inlet and outlet pipes are fixed with a wire distribution mesh, and the wire distribution mesh has multiple wire distribution holes, with adjacent wire distribution holes spaced apart.

[0019] By adopting the above technical solution, the dividing holes of the wire mesh can separate and guide the ultra-fine steel wires, preventing multiple wires from tangling or contacting each other during transmission. This ensures that each wire can pass through the inlet and outlet pipes independently and smoothly. The spacing between adjacent dividing holes maintains a certain distance between the wires, reducing heat transfer interference and allowing each wire to be heated evenly within the temperature control chamber. This ensures consistent metallographic transformation of all wires and improves product quality stability.

[0020] Optionally, an insulation layer is fixed on the vertical outer wall of the temperature control box.

[0021] By adopting the above technical solution, the insulation layer can effectively reduce heat exchange between the temperature control chamber and the external environment, slow down the rate of heat loss inside the chamber, and enhance the insulation performance of the temperature control chamber. Even when the external ambient temperature changes significantly, it can help maintain a stable temperature inside the temperature control chamber, thereby more reliably keeping the steel wire within the temperature range of sorbite transformation and ensuring that the metallographic structure of the steel wire slowly and fully sorbites.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. Through the synergistic effect of the temperature control chamber, heating layer and temperature sensor, the temperature inside the temperature control chamber can be stably controlled within the range of sorbite transformation, effectively solving the problem of temperature instability caused by traditional open air cooling, ensuring the uniform transformation of the metallographic structure of the steel wire, and improving the mechanical properties of the ultrafine steel wire. 2. Multiple structural designs enhance the practicality and stability of the device. For example, the lifting component allows for convenient adjustment of the temperature control box position, the wire mesh ensures smooth transmission and uniform heating of multiple steel wires, and the insulation layer reduces heat loss. These features enable the device to adapt to different working conditions and improve production efficiency and product quality stability. 3. The design connecting the water bath chamber and the circulating pipe branches, combined with the circulation system in the water bath, provides a stable and continuous heat source for the temperature control box, further reducing temperature fluctuations and facilitating the slow and complete sorbitization of the steel wire metallography, thus meeting the production requirements of high-quality ultrafine steel wire. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 It is a sectional view along the length of the water bath tank; Figure 3 This is a partial structural diagram of the lifting component; Figure 4 This is a partial structural cross-sectional view of the temperature control box.

[0024] In the diagram, 1. Water bath; 2. Temperature control box; 21. Top cover; 22. Inlet pipe; 23. Outlet pipe; 24. Heating layer; 25. Temperature sensor; 26. Water bath chamber; 27. Circulating water pump; 28. Branch; 29. ​​Insulation layer; 3. Lifting assembly; 31. Motor; 32. Gear; 33. Rack; 4. Column; 41. Slide groove; 5. Suspension line; 51. Stabilizing pipe; 6. Positioning rod; 7. Distribution net; 71. Distribution hole. Detailed Implementation

[0025] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0026] This application discloses a heat preservation device for ultra-fine steel wire after water bath heat treatment.

[0027] refer to Figure 1 A heat preservation device for ultra-fine steel wire after water bath heat treatment includes a water bath tank 1, which is used to hold liquid, specifically water in this embodiment, to provide a basic temperature control environment for the device. A temperature control box 2 is slidably mounted on the water bath tank 1. The temperature control box 2 is the core enclosed space for steel wire heat preservation, and its top is hinged with a top cover 21. When the top cover 21 is closed, it reduces heat loss inside the box; when open, it facilitates equipment maintenance or steel wire threading. One end of the temperature control box 2 is fixed with an inlet pipe 22, and the other end is fixed with an outlet pipe 23. After water bath heat treatment, the ultra-fine steel wire passes through the inlet pipe 22 into the temperature control box 2 to complete the heat preservation, and then exits through the outlet pipe 23 to enter the next process, realizing continuous transmission within the enclosed space.

[0028] refer to Figure 1 and Figure 2 The temperature control chamber 2 can slide vertically relative to the water bath 1, and its bottom is always in contact with the liquid in the water bath 1. This design allows for flexible height adjustment according to changes in the amount of liquid in the water bath 1, ensuring continuous contact between the bottom and the liquid, and providing basic insulation for the temperature control chamber 2 using the liquid temperature. A heating layer 24 is attached to the vertical inner wall of the temperature control chamber 2. In this embodiment, the heating layer 24 is composed of electric heating wires. When the temperature inside the chamber is lower than the sorbite transformation range, the heating layer 24 can be activated for supplemental heating. The temperature control chamber 2 is also equipped with a temperature sensor 25, which is used to monitor the internal temperature in real time and provide feedback signals for the activation and deactivation of the heating layer 24, ensuring that the temperature inside the chamber remains stable within the suitable range for sorbite transformation (usually 500-600℃).

[0029] refer to Figure 2 and Figure 3The bottom of the temperature control box 2 has a convex structure, which increases the contact area with the liquid in the water bath 1. In this embodiment, it is shown as rectangular, but it can also be an outwardly convex arc shape, thereby more effectively changing the contact area and improving the heat transfer efficiency. Two sets of lifting components 3 are provided between the temperature control box 2 and the water bath 1, corresponding to the positions of the inlet pipe 22 and the outlet pipe 23, respectively. The lifting components 3 include a motor 31, a gear 32, and a rack 33. A column 4 is welded to the top of the water bath 1. The motor 31 is fixed to the side of the column 4 by bolts. The column 4 has a sliding groove 41 in the vertical direction. The output shaft of the motor 31 passes through the sliding groove 41 and is keyed to the gear 32. The gear 32 meshes with the rack 33. The rack 33 is slidably embedded in the sliding groove 41, and its end near the temperature control box 2 is welded and fixed to the outer wall of the inlet pipe 22 or the outlet pipe 23. When the motor 31 is started, the gear 32 drives the rack 33 to rise and fall along the slide groove 41, thereby driving the temperature control box 2 to move smoothly, avoiding tilting caused by unilateral force and ensuring smooth steel wire transmission.

[0030] refer to Figure 3 and Figure 4 The top of the column 4 is equipped with a positioning rod 6. One end of the positioning rod 6 is ball-jointed to the top of the column 4, and the other end can cross the slide groove 41 and abut against the top of the other side of the column 4. When the motor 31 is stationary, the positioning rod 6 is engaged between the adjacent teeth of the rack 33, which can prevent the rack 33 from sliding down due to its own weight or vibration, and ensure the stability of the temperature control box 2. When adjusting the height of the temperature control box 2, simply rotate the positioning rod 6 to disengage it from the teeth, which is convenient to operate.

[0031] refer to Figure 2 and Figure 4 The temperature control box 2 has a water bath chamber 26 inside its bottom. A circulating water pump 27 and a circulation pipe (not fully shown in the figure) are installed on the outside of the water bath 1. The circulating water pump 27 drives the liquid in the water bath 1 to flow along the circulation pipe, ensuring that the liquid temperature in the bath is uniform. A branch 28 is connected to the circulation pipe, and the other end of the branch 28 is sealed to the water bath chamber 26, allowing the constant temperature liquid to enter the water bath chamber 26 for circulation, further enhancing the heat preservation effect at the bottom of the temperature control box 2 and reducing temperature fluctuations.

[0032] refer to Figure 2 and Figure 4 A suspension wire 5 is connected to the top of the temperature sensor 25, and the other end of the suspension wire 5 is fixed to the inner wall of the top cover 21. When the top cover 21 is closed, the temperature sensor 25 is suspended precisely at the center of the interior of the temperature control box 2. This position can more accurately reflect the average temperature inside the box and avoid measurement deviations caused by proximity to the heating layer 24 or the box wall. A stabilizing tube 51 is hinged at the center of the inner wall of the top cover 21, and the suspension wire 5 passes through the stabilizing tube 51. The stabilizing tube 51 can limit the swaying amplitude of the suspension wire 5, and at the same time, the hinge structure can accommodate slight displacement of the suspension wire 5, ensuring stable monitoring by the temperature sensor 25. refer to Figure 1 Both the inlet pipe 22 and the outlet pipe 23 have a wire distribution mesh 7 fixed inside. The wire distribution mesh 7 has multiple wire distribution holes 71 evenly distributed on it, with equal spacing between adjacent wire distribution holes 71. Multiple ultra-fine steel wires can be threaded into different wire distribution holes 71, which can not only avoid them from tangling together, but also ensure the spacing between the steel wires, reduce heat transfer interference, and make each steel wire heat up evenly. refer to Figure 2 and Figure 4 The vertical outer wall of the temperature control box 2 is covered with an insulation layer 29. In this embodiment, the insulation layer 29 is made of rock wool or aluminum silicate wool. The insulation layer 29 can reduce the heat exchange rate between the temperature control box 2 and the outside world, reduce heat loss, and enhance the insulation stability. The implementation principle of this embodiment is as follows: After being heat-treated in a water bath, the ultra-fine steel wire enters the temperature control box 2 through the branch hole 71 of the inlet pipe 22, and the top cover 21 is closed to form a closed space. The bottom of the temperature control box 2 is in contact with the liquid in the water bath 1, and at the same time, the circulating water pump 27 drives the constant temperature liquid to enter the water bath chamber 26 through the branch 28 to provide basic insulation for the box; the temperature sensor 25 monitors the temperature in real time, and if it is lower than the set value, the heating layer 24 starts to supplement the heat. The lifting component 3 can adjust the height of the temperature control box 2 according to the amount of liquid in the water bath 1, and the positioning rod 6 ensures that the position is stable after adjustment; the insulation layer 29 and the top cover 21 reduce heat loss, and the stabilizing pipe 51 ensures that the temperature sensor 25 works stably. After the steel wire completes the insulation in the temperature control box 2, it is led out through the branch hole 71 of the outlet pipe 23, realizing the sorbitization transformation in a stable temperature environment and ensuring the uniformity of the metallographic structure.

[0033] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A heat preservation device for ultra-fine steel wire after water bath heat treatment, comprising a water bath tank (1), characterized in that: A temperature control box (2) is slidably mounted on the water bath (1). A top cover (21) is hinged to the top of the temperature control box (2). An inlet pipe (22) is installed at one end of the temperature control box (2), and an outlet pipe (23) is installed at the other end. The temperature control box (2) slides vertically relative to the water bath (1) and its bottom contacts the liquid in the water bath (1). A heating layer (24) is provided on the vertical inner wall of the temperature control box (2), and a temperature sensor (25) is provided inside the temperature control box (2).

2. The heat preservation device for ultra-fine steel wire after water bath heat treatment according to claim 1, characterized in that: The bottom of the temperature control box (2) is convex. A lifting assembly (3) is provided between the temperature control box (2) and the water bath (1). There are two lifting assemblies (3) and they are distributed at the inlet pipe (22) and the outlet pipe (23). The lifting assembly (3) includes a motor (31), a gear (32) and a rack (33). A column (4) is fixed on the top of the water bath (1). The motor (31) is fixed on the column (4). A sliding groove (41) is provided on the column (4). The output end of the motor (31) passes through the sliding groove (41) and is fixed to the gear (32). The gear (32) meshes with the rack (33). The rack (33) slides vertically in the sliding groove (41). The rack (33) is fixedly connected to the outer wall of the inlet pipe (22) or the outer wall of the outlet pipe (23).

3. The heat preservation device for ultra-fine steel wire after water bath heat treatment according to claim 2, characterized in that: The temperature control box (2) has a water bath chamber (26) at the bottom. A circulating water pump (27) and a circulating pipe for achieving a uniform and constant liquid temperature in the water bath chamber (1) are provided on the water bath tank (1). A branch (28) is provided on the circulating pipe, and the water bath chamber (26) is connected to the branch (28) of the circulating pipe.

4. The heat preservation device for ultra-fine steel wire after water bath heat treatment according to claim 1, characterized in that: A suspension wire (5) is fixed between the temperature sensor (25) and the top cover (21); when the top cover (21) is closed, the temperature sensor (25) is suspended to the center of the interior of the temperature control box (2).

5. The heat preservation device for ultra-fine steel wire after water bath heat treatment according to claim 4, characterized in that: A stabilizing tube (51) is hinged at the center of the inner wall of the top cover (21), and a suspension line (5) passes through the stabilizing tube (51).

6. The heat preservation device for ultra-fine steel wire after water bath heat treatment according to claim 2, characterized in that: The column (4) is provided with a positioning rod (6) at the top. One end of the positioning rod (6) is ball-jointed to the top of the column (4), and the other end crosses the slide groove (41) and abuts against the top of the column (4). When the motor (31) is stationary, the positioning rod (6) crosses between the corresponding adjacent teeth of the rack (33).

7. The heat preservation device for ultra-fine steel wire after water bath heat treatment according to claim 1, characterized in that: Both the inlet pipe (22) and the outlet pipe (23) are fixed with a wire divider mesh (7), and the wire divider mesh (7) has multiple wire divider holes (71) with adjacent wire divider holes (71) spaced apart.

8. The heat preservation device for ultra-fine steel wire after water bath heat treatment according to claim 1, characterized in that: The temperature control box (2) has an insulation layer (29) fixed on its vertical outer wall.

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