A hot-dip galvanized steel wire surface treatment device and treatment method

Abstract

The application discloses a hot-dip galvanized steel wire surface treatment device and belongs to the technical field of hot-dip galvanized steel wire production. The device comprises a pressing plate, the bottom of which is connected with a guide mechanism, the guide mechanism extends into a zinc pot to limit and guide the hot-dip galvanized steel wire. A wiping shell is connected to the pressing plate, and a wiping piece is movably connected in the wiping shell to clamp and wipe the hot-dip galvanized steel wire. The hot-dip galvanized steel wire moves downward, and the wiping piece moves relative to the wiping shell, so that the wiping piece moves downward along with the hot-dip galvanized steel wire. A water cooling mechanism is arranged above the wiping shell. The hot-dip galvanized steel wire in the zinc pot is guided from the horizontal direction to the vertical direction through the guide mechanism, and then is wiped by the wiping piece and cooled by the water cooling mechanism, and finally enters the next process. The application also discloses a hot-dip galvanized steel wire surface treatment method. The application avoids the scratch of the plating layer, zinc liquid splashing and surface vibration caused by rigid sliding friction, and significantly improves the surface smoothness and integrity of the zinc plating layer.

Description

Technical Field

[0001] This invention belongs to the field of hot-dip galvanized steel wire production technology, and particularly relates to a surface treatment device and method for hot-dip galvanized steel wire. Background Technology

[0002] In the continuous production line of hot-dip galvanized steel wire, the "wiping" and "water cooling" performed on the steel wire after it is drawn from the zinc pot are key processes for controlling the coating quality, thickness and surface smoothness. The main purpose of wiping is to remove excess zinc liquid, zinc ash and oxide scale from the surface of the steel wire, so that the coating thickness is uniform and the surface is smooth, and to prevent zinc nodules and sagging. The purpose of water cooling is to quickly solidify the zinc layer, terminate the zinc-iron alloy reaction, refine the grains, improve the coating adhesion and gloss, and prepare for subsequent wire winding.

[0003] However, in the continuous production line of galvanized steel wire, the steel wire may move around. This is a common dynamic problem in the high-speed hot-dip galvanizing process that requires key control. During the production of galvanized steel wire, the steel wire moves around, but the existing wiping block is fixed. The steel wire will then move back and forth relative to the wiping medium in the vertical direction, which will cause devastating surface defects and performance risks to the galvanizing quality.

[0004] Therefore, there is an urgent need to design a surface treatment device and method for hot-dip galvanized steel wire to solve the problem of the hot-dip galvanized steel wire shifting during the wiping process mentioned above. Summary of the Invention

[0005] To address the technical problem mentioned in the background art of hot-dip galvanized steel wire shifting during wiping, a surface treatment device and method for hot-dip galvanized steel wire are provided to solve the above-mentioned problem.

[0006] To achieve the above objectives, the specific technical solution of the hot-dip galvanized steel wire surface treatment device and method of the present invention is as follows: A surface treatment device for hot-dip galvanized steel wire includes a pressure plate, a guide mechanism connected to the bottom of the pressure plate, the guide mechanism extending into a zinc pot to limit and guide the hot-dip galvanized steel wire, a wiping shell connected to the pressure plate, and a wiping component movably connected inside the wiping shell to clamp and wipe the hot-dip galvanized steel wire. The hot-dip galvanized steel wire moves downward, and the wiping component moves relative to the wiping shell, thereby causing the wiping component to move downward following the hot-dip galvanized steel wire. A water cooling mechanism is provided above the wiping shell. The hot-dip galvanized steel wire in the zinc pot is guided from the horizontal direction to the vertical direction by the guide mechanism, and after being wiped by the wiping component and cooled by the water cooling mechanism, it enters the next process.

[0007] Furthermore, the wiping shell is provided with a first slide rail, the wiping component is provided with a first sliding hole, the first slide rail is slidably connected to the first sliding hole, the wiping component is fixedly connected with a first elastic element, the end of the first elastic element away from the wiping component is fixedly connected to the wiping shell, and the wiping shell is provided with a limiting block to limit the movement stroke of the wiping component.

[0008] Furthermore, the wiping component includes a base plate, which is connected to the first elastic element. The first sliding hole is located on the base plate, and multiple grippers are connected to the base plate. The multiple grippers are circumferentially connected to the base plate in a petal shape. Wiping blocks are connected to the grippers, and hot-dip galvanized steel wire is clamped and wiped by the grippers.

[0009] Furthermore, each gripper has a first arc surface and a second conical surface is provided on the limiting block. The first arc surface and the second conical surface are slidably connected. During the stroke of sliding along the axial direction of the second conical surface, the multiple first arc surfaces can come together to form a first conical surface that fits against the second conical surface, and the limiting is achieved through the cooperation between the first conical surface and the second conical surface.

[0010] Furthermore, the limiting block is provided with a first thread, and the wiping shell is provided with a first threaded hole. The first thread matches the first threaded hole. Rotating the limiting block will cause the first thread to be screwed into the first threaded hole.

[0011] Furthermore, each gripper has an inner accommodating groove, and a second arc-shaped block is slidably connected in the accommodating groove. The second arc-shaped block and the accommodating groove are connected by a second elastic element. The wiping block is located on the second arc-shaped block. When the grippers are in the retracted state, the multiple second arc-shaped blocks together form a circular clamping hole. The diameter of the circular clamping hole is adapted to the outer diameter of the hot-dip galvanized steel wire.

[0012] Furthermore, the guiding mechanism includes a telescopic alloy component, one end of which is fixedly connected to the bottom of the pressure plate, and the other end of which is fixedly connected to a crucible shaft to limit and guide the hot-dip galvanized steel wire through the crucible shaft.

[0013] Furthermore, a concave arc-shaped guide groove is provided on the crucible shaft, and a ceramic block is placed inside the concave arc-shaped guide groove to guide the direction of the hot-dip galvanized steel wire. An arc-shaped profile is provided on the crucible shaft, and the arc-shaped profile extends downward at the outlet end of the concave arc-shaped guide groove and envelops the end of the concave arc-shaped guide groove to form a continuous guide surface.

[0014] Furthermore, it also includes a housing, with a pressure plate located inside the housing. A limit support foot is fixedly connected to the pressure plate, and a circumferential limit ring is fixedly connected to the limit support foot. The circumferential limit ring is located between the water cooling device and the wiping housing.

[0015] Another object of the present invention is to provide a method for surface treatment of hot-dip galvanized steel wire, using the aforementioned hot-dip galvanized steel wire surface treatment apparatus, comprising: S1. Threading and pre-tightening: Pass the hot-dip galvanized steel wire through the guide mechanism and pull it vertically upward so that it passes through the circular clamping hole formed by the multiple grippers of the wiping component; adjust the axial position of the limit block on the wiping shell so that the second conical surface presses against the first arc surface, driving the multiple grippers to radially close until the second arc surface block adheres to the surface of the hot-dip galvanized steel wire with a preset clamping force. S2. Dynamic wiping and elastic following: During the continuous upward movement of the hot-dip galvanized steel wire, when the hot-dip galvanized steel wire moves downward axially, the axial static friction between the hot-dip galvanized steel wire and the second arc surface block overcomes the axial restoring force of the first elastic element, driving the wiping component to move downward synchronously along the first slide rail. The axial elastic deformation of the first elastic element offsets the downward displacement of the steel wire, maintaining the relative stillness of the wiping component and the hot-dip galvanized steel wire within the movement stroke. S3. Automatic Reset: When the downward trend of the hot-dip galvanized steel wire is eliminated or reversed, the first elastic element releases the stored elastic potential energy, driving the wiping component to return to the initial equilibrium position along the first slide rail. At the same time, the limit block restricts the extreme stroke of the wiping component. S4. Cooling and Shaping: After being wiped, the hot-dip galvanized steel wire continues to rise and passes through a water-cooling mechanism for cooling and solidification, completing the surface treatment.

[0016] The hot-dip galvanized steel wire surface treatment apparatus and method of the present invention have the following advantages: This invention constructs an axial floating mechanism for the wiping component by setting a first slide rail, a first sliding hole, and a first elastic element. When the hot-dip galvanized steel wire moves downward, the static friction between the hot-dip galvanized steel wire and the second arc surface block drives the entire wiping component to move downward synchronously. The deformation of the first elastic element is used to offset the downward displacement in real time, realizing an elastic following mechanism. This keeps the wiping component and the hot-dip galvanized steel wire relatively stationary within the downward movement stroke, fundamentally avoiding coating scratches, zinc splashes, and surface ripples caused by rigid sliding friction, and significantly improving the surface smoothness and integrity of the galvanized layer.

[0017] The guiding mechanism of this invention adopts a combination of telescopic alloy parts and crucible shaft to achieve a smooth transition from horizontal to vertical, avoiding stress concentration during turning. The circumferential limiting ring further suppresses the lateral swing of the steel wire. The water cooling mechanism follows the wiping process to quickly solidify the zinc layer and terminate the alloy reaction, ensuring the stability of the hot-dip galvanized steel wire during high-speed upward movement and providing a reliable physical basis for high-precision wiping and cooling shaping. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the hot-dip galvanized steel wire surface treatment device of the present invention; Figure 2 This is a schematic diagram of the internal structure of the hot-dip galvanized steel wire surface treatment according to the present invention; Figure 3 for Figure 2An enlarged schematic diagram of part A; Figure 4 This is a schematic diagram of the wiping component structure of the present invention; Figure 5 This is a schematic diagram of the limiting block structure of the present invention; Figure 6 This is a schematic diagram of the receiving groove structure of the present invention; Figure 7 This is a schematic diagram of the second arc-shaped block structure of the present invention.

[0019] The markings in the diagram are as follows: 1. Pressure plate; 2. Guide mechanism; 201. Telescopic alloy part; 202. Crucible shaft; 2021. Concave arc-shaped guide groove; 2022. Arc-shaped contour; 3. Wiping shell; 301. First slide rail; 302. First screw hole; 4. Wiping component; 401. First sliding hole; 402. Base plate; 403. Clamping claw; 404. Wiping block; 4031. First arc surface; 4032. Receiving groove; 4033. Second arc surface block; 5. Water cooling mechanism; 6. First elastic element; 7. Second elastic element; 8. Limiting block; 801. Second conical surface; 802. First thread; 9. Outer shell; 10. Hot-dip galvanized steel wire; 11. Limiting support foot; 12. Circumferential limiting ring. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0022] The following is a reference to the appendix. Figure 1 To be continued Figure 7 The present invention describes the surface treatment apparatus and method for hot-dip galvanized steel wire.

[0023] A surface treatment device for hot-dip galvanized steel wire, such as Figure 1 , Figure 2 and Figure 3As shown, the system includes a pressure plate 1, with a guide mechanism 2 connected to the bottom of the pressure plate 1. The guide mechanism 2 extends into the zinc pot (not shown) to limit and guide the hot-dip galvanized steel wire 10. A wiping shell 3 is connected to the pressure plate 1, and a wiping component 4 is movably connected inside the wiping shell 3 to clamp and wipe the hot-dip galvanized steel wire 10. As the hot-dip galvanized steel wire 10 moves downward, the wiping component 4 moves relative to the wiping shell 3, thus causing the wiping component 4 to move downward following the hot-dip galvanized steel wire 10. A water-cooling mechanism 5 is provided above the wiping shell 3. The hot-dip galvanized steel wire 10 in the zinc pot is guided from the horizontal direction to the vertical direction by the guide mechanism 2, and after being wiped by the wiping component 4 and cooled by the water-cooling mechanism 5, it enters the next process. Specifically, the pressure plate 1 serves as the mounting base, with a guide mechanism 2 connected to its bottom. The guide mechanism 2 extends into the zinc pot to smoothly guide the hot-dip galvanized steel wire 10 from the horizontal direction to the vertical direction. A water-cooling mechanism 5 is installed above the wiping shell 3 to quickly cool and shape the wiped hot-dip galvanized steel wire 10. The wiping shell 3 is fixed on the pressure plate 1, and a wiping component 4 is movable inside the wiping shell 3 to clamp and wipe the vertically ascending hot-dip galvanized steel wire 10. The wiping component 4 moves downward with the hot-dip galvanized steel wire 10 to prevent the hot-dip galvanized steel wire 10 from shifting back and forth relative to the wiping medium in the vertical direction, which would cause devastating surface defects and performance risks to the galvanizing quality.

[0024] As a preferred option, such as Figure 3 and Figure 4 As shown, the wiping shell 3 is provided with a first slide rail 301, and the wiping component 4 is provided with a first sliding hole 401. The first slide rail 301 and the first sliding hole 401 are slidably connected. A first elastic element 6 is fixedly connected to the wiping component 4. The end of the first elastic element 6 away from the wiping component 4 is fixedly connected to the wiping shell 3. The wiping shell 3 is provided with a limiting block 8 to limit the movement stroke of the wiping component 4. Specifically, in order to realize the adaptive following of the wiping component 4 to the downward movement of the hot-dip galvanized steel wire 10, the wiping shell 3 is provided with a vertical first slide rail 301, and the wiping component 4 is provided with a first sliding hole 401 that matches it, so that the wiping component 4 can slide axially along the first slide rail 301. The wiping component 4 is connected to the wiping shell 3 through the first elastic element 6, which provides axial restoring force. The wiping shell 3 is also provided with a limiting block 8 to limit the maximum upward stroke of the wiping component 4 and prevent it from falling out.

[0025] As a preferred option, such as Figure 4 , Figure 6 and Figure 7As shown, the wiping component 4 includes a base plate 402, which is connected to the first elastic element 6. Multiple grippers 403 are connected to the base plate 402 in a petal-like circumferential configuration. Wiping blocks 404 are connected to the grippers 403, and the hot-dip galvanized steel wire 10 is held and wiped by the grippers 403. Each gripper 403 has an inner accommodating groove 4032, within which a second arcuate block 4033 is slidably connected. The second arcuate block 4033 and the accommodating groove 4032 are connected by a... The second elastic element 7 is connected, and the wiping block 404 is located on the second arc surface block 4033. When the multiple claws 403 are in the retracted state, the multiple second arc surface blocks 4033 together form a circular clamping hole. The diameter of the circular clamping hole is adapted to the outer diameter of the hot-dip galvanized steel wire 10. Specifically, when the multiple claws 403 are retracted, each of the second arc surface blocks 4033 together forms a circular clamping hole adapted to the outer diameter of the hot-dip galvanized steel wire 10. The second elastic element 7 provides radial flexible clamping force, which ensures the wiping contact pressure and avoids rigid extrusion damage to the coating.

[0026] As a preferred option, such as Figure 5 and Figure 6 As shown, each gripper 403 has a first arc surface 4031, and the limiting block 8 has a second conical surface 801. The first arc surface 4031 and the second conical surface 801 are slidably connected. During the stroke of sliding along the axial direction of the second conical surface 801, the multiple first arc surfaces 4031 can come together to form a first conical surface that fits against the second conical surface 801. The first conical surface and the second conical surface 801 are used for limiting. The outer side of each gripper 403 has a first arc surface 4031, and the lower end of the limiting block 8 has a second conical surface 801. When the gripper 403 moves upward, the second conical surface 801 presses against each first arc surface 4031, forcing the gripper 403 to retract radially, thereby increasing the clamping force of the second arc surface block 4033 on the hot-dip galvanized steel wire 10.

[0027] Furthermore, to ensure the stability of the wiping quality of the hot-dip galvanized steel wire 10 surface, the mechanical properties of the second elastic element 7 and the movement stroke of the gripper 403 are configured to precisely match the fluctuation range of the normal wiping force of the galvanized layer. It should be noted that the normal wiping force fluctuation range of the galvanized layer described in this embodiment refers to the allowable radial clamping force range in the hot-dip galvanizing process that effectively removes excess zinc liquid from the surface of the hot-dip galvanized steel wire 10, ensures uniform coating thickness, and prevents the unsolidified zinc layer from peeling off or the steel wire substrate from being damaged due to excessive pressure. This range is jointly determined by process parameters such as zinc liquid temperature, steel wire specifications, and production line speed. In this embodiment, for a 2.0mm diameter hot-dip galvanized steel wire 10, the normal wiping force range is determined through process verification. The force fluctuation range is 8.0N to 12.0N. The second elastic element 7 is installed in the receiving groove 4032 inside the gripper 403. Its contraction and expansion states directly determine the radial clamping force of the second arc surface block 4033 on the hot-dip galvanized steel wire 10. The second conical surface 801 presses against the first arc surface 4031 on the outside of the gripper 403, driving multiple grippers 403 to move upward along the first slide rail 301 and retract radially. When the gripper 403 moves to the uppermost position of its axial stroke, the gripper 403 reaches the maximum retracted state. At this time, the second elastic element 7 returns to the minimum compression amount within the working stroke, and the radial clamping force generated by the second arc surface block 4033 on the hot-dip galvanized steel wire 10 reaches its maximum value. In this embodiment, through reasonable The stiffness and preload of the second elastic element 7 are selected to ensure that the maximum clamping force is below 12.0N, corresponding to the upper limit of the normal wiping force fluctuation range. This upper limit ensures that even when the diameter of the hot-dip galvanized steel wire 10 is at the upper limit of the tolerance or the viscosity of the zinc liquid is high, sufficient wiping force can still be provided to remove excess zinc liquid, while avoiding mechanical damage to the coating due to excessive pressure. Conversely, the pressure of the second conical surface 801 on the first arc surface 4031 is weakened, and the gripper 403 moves downward along the first slide rail 301 and expands radially. When the gripper 403 moves to the lowermost position of its axial stroke, the gripper 403 is in a fully expanded state. At this time, the second elastic element 7 is compressed to the maximum compression amount within the working stroke, and the second arc surface block... The radial clamping force generated by the second arc block 4033 on the steel wire reaches a minimum value. In this embodiment, the minimum clamping force is configured to be above 8.0N to correspond to the lower limit of the normal wiping force fluctuation range. The setting of this lower limit ensures that even when the steel wire diameter is at the lower limit of the tolerance or the equipment vibration is large, the second arc block 4033 can still maintain continuous contact with the surface of the hot-dip galvanized steel wire 10, avoiding wiping interruption or zinc liquid residue due to instantaneous separation. As a result, the radial clamping force corresponding to the second elastic element 7 in the maximum contraction state and the minimum expansion state is precisely within the normal wiping force fluctuation range of the galvanized layer, realizing full-stroke adaptive coverage of the wiping force. The radial clamping force output by the second arc block 4033 always falls within 8.0N to 12N.Within the 0N safety window, the risk of wiping force exceeding the process allowable range during small-scale movement of the steel wire is fundamentally eliminated. Simultaneously, it enhances compatibility with steel wire diameter tolerances. When the actual steel wire diameter fluctuates within 0.05mm of the nominal value, the second elastic element 7 can automatically compensate for dimensional deviations through its own slight contraction or expansion, ensuring that the radial clamping force changes smoothly within the normal wiping force fluctuation range.

[0028] It should be noted that the above-mentioned normal wiping force fluctuation range of the galvanized layer is not a fixed value applicable to all working conditions, but rather a process window that dynamically changes with the steel wire specifications and process parameters. Those skilled in the art can determine the allowable range under specific working conditions based on the following engineering model: radial clamping force lower limit The effective positive pressure required to overcome the surface tension of the molten zinc and maintain minimum wiping contact is determined by the following formula: ； In the formula, The diameter of the steel wire. The surface tension coefficient of molten zinc at a given temperature can be obtained from a table of molten zinc properties. To ensure the minimum preload required for continuous contact between the second arc-shaped block 4033 and the wire surface, a force typically ranging from 0.5 to 1.5 N is used. This force is a geometric correction coefficient related to the number of grippers 403 and the curvature of the arc surface. For the four-lobed gripper 403 structure in this embodiment, The value is 2.8.

[0029] radial clamping force upper limit The critical shear stress that prevents the unsolidified zinc layer from plastically peeling off is determined by the following formula: ； In the formula, For the zinc layer at temperature and linear velocity The critical shear strength under combined action, this value decreases with increasing temperature and increases slightly with increasing linear velocity due to the strain rate effect, and can be obtained through standard zinc layer shear test or by referring to hot-dip galvanizing process manual; The friction and shear conversion coefficient reflects the efficiency of radial pressure transfer to interfacial shear force. For curved ceramic blocks, The value is 0.45.

[0030] Therefore, when the wire diameter, zinc liquid temperature, or linear velocity changes, those skilled in the art can directly use the above formula to recalculate the boundary values, or calibrate the actual process window within ±15% of the model's predicted value through orthogonal experiments.

[0031] As a preferred option, such as Figure 3 , Figure 4 and Figure 5 As shown, the limiting block 8 has a first thread 802, and the wiping shell 3 has a first threaded hole 302. The first thread 802 matches the first threaded hole 302. By rotating the limiting block 8, the first thread 802 is screwed into the first threaded hole 302. Specifically, the limiting block 8 and the wiping shell 3 adopt a detachable threaded connection structure. Its core purpose is to achieve quick replacement and maintenance of the wiping component 4. By rotating the limiting block 8, the operator can screw the first thread 802 into the first threaded hole 302, thereby fixing the limiting block 8 to the preset axial direction of the wiping shell 3. Conversely, when the gripper 403 needs to be disassembled and replaced, simply rotate the limiting block 8 in the opposite direction so that its first thread 802 is completely disengaged from the first threaded hole 302. The limiting block 8 then separates from the wiping shell 3, and the operator can directly remove the gripper 403 from above. In addition, the threaded connection structure also has the function of adjustable axial positioning accuracy. Preferably, during the assembly process, the axial position of its second conical surface 801 relative to the reference surface of the wiping shell 3 can be finely adjusted by controlling the screwing depth of the limiting block 8, thereby accurately setting the retracted state of the gripper 403.

[0032] As a preferred option, such as Figure 1As shown, the guiding mechanism 2 includes a telescopic alloy component 201. One end of the telescopic alloy component 201 is fixedly connected to the bottom of the pressure plate 1, and the other end of the telescopic alloy component 201 away from the bottom of the pressure plate 1 is fixedly connected to a crucible shaft 202 to limit and guide the hot-dip galvanized steel wire 10. A concave arc-shaped guide groove 2021 is provided on the crucible shaft 202, and a ceramic block is placed in the concave arc-shaped guide groove 2021 to guide the direction of the hot-dip galvanized steel wire 10. An arc-shaped profile 2022 is provided on the crucible shaft 202, which extends downward from the outlet end of the hot-dip galvanized steel wire 10 in the concave arc-shaped guide groove 2021 and wraps around the end of the concave arc-shaped guide groove 2021 to form a continuous guide surface. Specifically, one end of the telescopic alloy component 201 is fixed to the bottom of the pressure plate 1, and the other end is connected to the crucible shaft 202. The crucible shaft 202 and the telescopic alloy component 201 can adjust the tension of the hot-dip galvanized steel wire 10. The crucible shaft 202 has a concave arc-shaped guide groove 2021 with a high-temperature resistant ceramic block embedded in it to reduce steel wire wear. The crucible shaft 202 also has a downwardly extending arc-shaped profile 2022 at the outlet end of the hot-dip galvanized steel wire 10 to form a continuous and smooth guide surface, which avoids stress concentration at the turning point of the steel wire and improves the service life of the crucible shaft 202. The alloy telescopic component 201 shell is made of a telescopic motor, which is locked at the bottom of the pressure plate 1. The push rod at the output end of the telescopic motor is fixedly connected to the crucible shaft 202. Optionally, the motor housing and push rod of the telescopic motor are made of alloy metal, and the surfaces of the motor housing and push rod are nitrided or DLC coated to enhance wear resistance and avoid corrosion from zinc liquid and zinc vapor.

[0033] It should be noted that, for example Figure 2 As shown, one end of the concave arc-shaped guide groove 2021 forms a transition structure with the concave arc-shaped guide groove 2021, while the other end of the concave arc-shaped guide groove 2021 connects to the straight segment profile of the crucible shaft 202. Those skilled in the art can replace the straight segment profile with a broken line profile, an arc-shaped profile, or other irregular profiles according to actual stress requirements. Furthermore, a weight-reducing through hole is provided inside the crucible shaft 202. Figure 2 The weight-reducing through hole is a circular through hole. Those skilled in the art can change the circular through hole to a multi-deformable through hole, an irregularly shaped through hole, or a through hole with the same shape as the crucible shaft but scaled down proportionally, according to actual stress requirements. This will not be elaborated here.

[0034] As a preferred option, such as Figure 1 , Figure 2 and Figure 3 As shown, the device also includes a housing 9, with a pressure plate 1 located inside the housing 9 to achieve sealing of the hot-dip galvanized steel wire 10 during the galvanizing process. A limiting foot 11 is fixedly connected to the pressure plate 1, and a circumferential limiting ring 12 is fixedly connected to the limiting foot 11. The circumferential limiting ring 12 is located between the water cooling device and the wiping shell 3 to suppress the lateral sway of the hot-dip galvanized steel wire 10 during high-speed operation, thereby further improving the stability of the device operation.

[0035] The first elastic element 6 and the second elastic element 7 can be selected from cylindrical helical compression springs, disc springs, wave springs, constant force springs or rubber elastomers, etc. Those skilled in the art can independently select the materials and structures of the first elastic element 6 and the second elastic element 7 according to the working conditions, but it is necessary to ensure that the restoring force generated by the first elastic element 6 under the maximum displacement is always less than the maximum static friction force between the hot-dip galvanized steel wire 10 and the second arc surface block 4033.

[0036] A surface treatment method for hot-dip galvanized steel wire includes the following steps: S1. Threading and pre-tightening: Pass the hot-dip galvanized steel wire 10 through the guide mechanism 2 and pull it vertically upward so that it passes through the circular clamping hole formed by the multiple grippers 403 of the wiping component 4; adjust the axial position of the limiting block 8 on the wiping shell 3 so that the second conical surface 801 presses against the first arc surface 4031, driving the multiple grippers 403 to radially retract until the second arc surface block 4033 adheres to the surface of the hot-dip galvanized steel wire 10 with a preset clamping force; Specifically, the hot-dip galvanized steel wire 10 is passed through the guide mechanism 2 and pulled vertically upwards, allowing it to pass smoothly through the circular clamping hole formed by multiple grippers 403. Then, the limiting block 8 is rotated, and its axial position on the wiping shell 3 is precisely adjusted by utilizing the helical pair between its outer first thread 802 and the first threaded hole 302 on the inner wall of the wiping shell 3. During this process, the second conical surface 801 of the limiting block 8 continuously presses against the first arc surface 4031 on the outer side of the grippers 403, driving the multiple grippers 403 along the first slide rail 301. The device moves upward and retracts radially until the second elastic element 7, installed in the receiving groove 4032 of the gripper 403, is compressed to the target working stroke. This causes the second arc-shaped block 4033 to be evenly attached to the surface of the hot-dip galvanized steel wire 10 with a preset radial clamping force. This preset clamping force is within the fluctuation range of the normal wiping force of the galvanized layer, which not only ensures the initial wiping effect but also reserves mechanical margin for subsequent dynamic following. After the adjustment is completed, the self-locking characteristic of the first thread 802 ensures that the limit block 8 does not undergo axial displacement during operation, maintaining the long-term stability of the pre-tightened state.

[0037] S2. Dynamic wiping and elastic following: During the continuous upward movement of the hot-dip galvanized steel wire 10, when the hot-dip galvanized steel wire 10 moves downward axially, the axial static friction between the hot-dip galvanized steel wire 10 and the second arc surface block 4033 overcomes the axial restoring force of the first elastic element 6, driving the wiping component 4 to move downward synchronously along the first slide rail 301, so as to offset the downward displacement of the steel wire by the axial elastic deformation of the first elastic element 6, and maintain the relative stillness of the wiping component 4 and the hot-dip galvanized steel wire 10 within the movement stroke; Specifically, during the continuous upward production of the hot-dip galvanized steel wire 10, when the hot-dip galvanized steel wire 10 moves downward axially due to production line tension fluctuations or equipment vibration, the axial static friction force generated between the surface of the hot-dip galvanized steel wire 10 and the second arc surface block 4033 increases accordingly. When this static friction force exceeds the axial restoring force of the first elastic element 6 under the current compressed state, the wiping component 4 is dragged by the hot-dip galvanized steel wire 10 and moves downward synchronously along the first slide rail 301. During this displacement process, the first elastic element 6 is further compressed, and the resulting elastic deformation... The downward displacement of the hot-dip galvanized steel wire 10 is offset in real time, so that the wiping element 4 and the hot-dip galvanized steel wire 10 remain relatively stationary within the traverse stroke. This elastic following mechanism avoids rigid sliding friction between the wiping element 4 and the hot-dip galvanized steel wire 10, prevents coating scratches or zinc splashes caused by sudden changes in relative speed, and ensures the continuity of the wiping process and the integrity of the coating surface. At the same time, since the second elastic element 7 is always within the effective working stroke, the radial clamping force only undergoes a small linear change during the following process and will not deviate from the normal wiping force window.

[0038] S3. Automatic reset: When the downward trend of the hot-dip galvanized steel wire 10 is eliminated or reversed, the first elastic element 6 releases the stored elastic potential energy, driving the wiping component 4 to return to the initial equilibrium position along the first slide rail 301. At the same time, the limit block 8 limits the extreme stroke of the wiping component 4. Specifically, when the downward trend of the hot-dip galvanized steel wire 10 is eliminated or the upward movement resumes, the axial drag force acting on the wiping component 4 decreases or reverses. At this time, the first elastic element 6 releases the elastic potential energy stored in step S2, driving the wiping component 4 to smoothly return to the initial equilibrium position along the first slide rail 301, and re-establishing a stable wiping contact state. When the wiping component 4 returns to the initial equilibrium position, the second conical surface 801 of the limiting block 8 abuts against the first arc surface 4031 of the wiping component 4 to the limit stroke, forming a mechanical hard limit to prevent the wiping component 4 from moving excessively upward and disengaging from the first slide rail 301, ensuring the repeatability accuracy of the reset position.

[0039] S4. Cooling and Shaping: After being wiped, the hot-dip galvanized steel wire 10 continues to rise and passes through the water cooling mechanism 5 for cooling and solidification, completing the surface treatment.

[0040] Specifically, after being stably wiped in step S2, the hot-dip galvanized steel wire 10 continues to rise vertically and enters the water-cooling mechanism 5 for forced cooling. During the cooling process, the liquid zinc layer remaining on the surface of the steel wire quickly solidifies and crystallizes, forming a galvanized layer of uniform thickness and firm adhesion.

[0041] The invention was tested on a simulation platform: using a 2.0mm steel wire, a radial clamping force of 10.5N, a stiffness of 1.85N / mm for the first elastic element 6, a simulated axial displacement amplitude of 1.5mm, and a frequency of 2Hz, the test results showed that the maximum following displacement of the wiping part 4 reached 1.47mm, the relative slippage was only 0.03mm, there were no scratches on the coating surface, and the bending test was qualified. When the axial displacement frequency rose above 4Hz, micro-slippage occurred because the inertial force exceeded the static friction limit. This can be solved by increasing the clamping force or replacing it with a high-stiffness spring.

[0042] In summary, this invention effectively solves the problem of coating damage caused by axial movement of hot-dip galvanized steel wire 10 through the synergistic design of the elastic following mechanism and the adjustable radial clamping structure. It is especially suitable for high-speed, high-precision galvanizing production lines and has significant industrial application value.

[0043] This invention constructs an axial floating mechanism for the wiping component 4 by setting a first slide rail 301, a first sliding hole 401, and a first elastic element 6. When the hot-dip galvanized steel wire 10 moves downward, the static friction between the hot-dip galvanized steel wire 10 and the second arc surface block 4033 drives the wiping component 4 to move downward synchronously. The deformation of the first elastic element 6 is used to offset the displacement in real time, realizing an elastic following mechanism. This keeps the wiping component 4 and the hot-dip galvanized steel wire 10 relatively stationary within the movement stroke, fundamentally avoiding coating scratches, zinc splashes, and surface ripples caused by rigid sliding friction, and significantly improving the surface smoothness and integrity of the galvanized layer.

[0044] The guide mechanism 2 of the present invention adopts a combination of telescopic alloy part 201 and crucible shaft 202 to achieve a smooth transition from horizontal to vertical, avoid stress concentration during turning, and the circumferential limiting ring 12 further suppresses the lateral swing of the steel wire. The water cooling mechanism 5 follows the wiping process to quickly solidify the zinc layer and terminate the alloy reaction, ensuring the stability of the hot-dip galvanized steel wire 10 during high-speed upward movement, and providing a reliable physical basis for high-precision wiping and cooling shaping.

[0045] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A surface treatment device for hot-dip galvanized steel wire, characterized in that, The system includes a pressure plate with a guide mechanism at its bottom. The guide mechanism extends into the zinc pot to limit and guide the hot-dip galvanized steel wire. A wiping shell is connected to the pressure plate, and a wiping component is movably connected inside the wiping shell to clamp and wipe the hot-dip galvanized steel wire. As the hot-dip galvanized steel wire moves downward, the wiping component moves relative to the wiping shell, thus causing the wiping component to follow the hot-dip galvanized steel wire downward. A water-cooling mechanism is installed above the wiping shell. The hot-dip galvanized steel wire in the zinc pot is guided from the horizontal direction to the vertical direction by the guide mechanism, and after being wiped by the wiping component and cooled by the water-cooling mechanism, it enters the next process.

2. The hot-dip galvanized steel wire surface treatment device according to claim 1, characterized in that, The wiping housing is provided with a first slide rail, and the wiping component is provided with a first sliding hole. The first slide rail and the first sliding hole are slidably connected. A first elastic element is fixedly connected to the wiping component. The end of the first elastic element away from the wiping component is fixedly connected to the wiping housing. The wiping housing is provided with a limit block to limit the movement stroke of the wiping component.

3. The hot-dip galvanized steel wire surface treatment device according to claim 2, characterized in that, The wiping component includes a base plate, which is connected to a first elastic element. A first sliding hole is located on the base plate, and multiple grippers are connected to the base plate. The multiple grippers are circumferentially connected to the base plate in a petal shape. Wiping blocks are connected to the grippers, and hot-dip galvanized steel wire is held and wiped by the grippers.

4. The hot-dip galvanized steel wire surface treatment device according to claim 3, characterized in that, Each gripper has a first arc surface, and the limiting block has a second conical surface. The first arc surface and the second conical surface are slidably connected. During the stroke of sliding along the axial direction of the second conical surface, the multiple first arc surfaces can come together to form a first conical surface that fits against the second conical surface, and the limiting is achieved through the cooperation between the first conical surface and the second conical surface.

5. The hot-dip galvanized steel wire surface treatment device according to claim 2, characterized in that, The limiting block has a first thread, and the wiping shell has a first threaded hole. The first thread matches the first threaded hole. Rotating the limiting block will cause the first thread to be screwed into the first threaded hole.

6. The hot-dip galvanized steel wire surface treatment apparatus according to claim 3 or 4, characterized in that, Each gripper has an inner groove, and a second arc-shaped block is slidably connected in the groove. The second arc-shaped block and the groove are connected by a second elastic element. The wiping block is located on the second arc-shaped block. When the grippers are closed, the multiple second arc-shaped blocks together form a circular clamping hole. The diameter of the circular clamping hole is adapted to the outer diameter of the hot-dip galvanized steel wire.

7. The hot-dip galvanized steel wire surface treatment device according to claim 1, characterized in that, The guiding mechanism includes a telescopic alloy component, one end of which is fixedly connected to the bottom of the pressure plate, and the other end of which is fixedly connected to a crucible shaft to limit and guide the hot-dip galvanized steel wire through the crucible shaft.

8. The hot-dip galvanized steel wire surface treatment device according to claim 7, characterized in that, A concave arc-shaped guide groove is provided on the crucible shaft, and a ceramic block is placed in the concave arc-shaped guide groove to guide the direction of the hot-dip galvanized steel wire. An arc-shaped profile is provided on the crucible shaft, and the arc-shaped profile extends downward at the outlet end of the concave arc-shaped guide groove and wraps around the end of the concave arc-shaped guide groove to form a continuous guide surface.

9. The hot-dip galvanized steel wire surface treatment device according to claim 1, characterized in that, It also includes an outer shell, with a pressure plate located inside the outer shell. A limit support foot is fixedly connected to the pressure plate, and a circumferential limit ring is fixedly connected to the limit support foot. The circumferential limit ring is located between the water cooling device and the wiping shell.

10. A method for surface treatment of hot-dip galvanized steel wire, using the surface treatment apparatus for hot-dip galvanized steel wire as described in any one of claims 1-9, characterized in that, include: S1. Threading and pre-tightening: Pass the hot-dip galvanized steel wire through the guide mechanism and pull it vertically upward so that it passes through the circular clamping hole formed by the multiple grippers of the wiping component; adjust the axial position of the limit block on the wiping shell so that the second conical surface presses against the first arc surface, driving the multiple grippers to radially close until the second arc surface block adheres to the surface of the hot-dip galvanized steel wire with a preset clamping force. S2. Dynamic wiping and elastic following: During the continuous upward movement of the hot-dip galvanized steel wire, when the hot-dip galvanized steel wire moves downward axially, the axial static friction between the hot-dip galvanized steel wire and the second arc surface block overcomes the axial restoring force of the first elastic element, driving the wiping component to move downward synchronously along the first slide rail. The axial elastic deformation of the first elastic element offsets the downward displacement of the steel wire, maintaining the relative stillness of the wiping component and the hot-dip galvanized steel wire within the movement stroke. S3. Automatic Reset: When the downward trend of the hot-dip galvanized steel wire is eliminated or reversed, the first elastic element releases the stored elastic potential energy, driving the wiping component to return to the initial equilibrium position along the first slide rail. At the same time, the limit block restricts the extreme stroke of the wiping component. S4. Cooling and Shaping: After being wiped, the hot-dip galvanized steel wire continues to rise and passes through a water-cooling mechanism for cooling and solidification, completing the surface treatment.

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