A phosphating device for steel wire surface

Abstract

This utility model relates to the field of steel wire production equipment, specifically to a steel wire surface phosphating device, including a frame, a phosphating tank at the lower end of the frame filled with phosphating solution, multiple upper guide wheels on the frame, and multiple lower guide wheels in the phosphating tank below the upper guide wheels. The frame is equipped with a drive mechanism connected to both the upper and lower guide wheels. A drying cylinder corresponding to the upper guide wheels is mounted on the frame, with multiple heating rings spaced apart on the outer side of the drying cylinder. Each heating ring has multiple air outlet pipes inserted into the drying cylinder. A hot air unit is mounted on the frame, including air supply pipes connected to each heating ring. This utility model has the advantage of a short drying cycle after steel wire phosphating.

Description

Technical Field

[0001] This utility model relates to the field of steel wire production equipment, specifically to a steel wire surface phosphating device. Background Technology

[0002] To improve the surface roughness of steel wire, enhance coating adhesion, and reduce wire breakage rate during drawing, phosphating treatment is necessary. This process involves contacting a weakly acidic phosphating solution with the steel wire surface, causing it to form a dense crystalline film of zinc iron phosphate. This film offers the following key advantages: 1. Improved mechanical properties: The micron-level crystalline structure increases surface roughness (Ra value reaches 1.2-1.8μm), significantly enhancing the bonding strength of subsequent coatings or plating layers; 2. Optimized drawing process: The film effectively buffers friction between the drawing die and the steel wire, reducing die wear by up to 20%, while simultaneously increasing the drawing rate by 15%-25%; 3. Synergistic rust prevention effect: The porous structure of the phosphating film forms a composite protective layer with rust inhibitors (such as organic amine compounds), improving the corrosion resistance of the steel wire in humid and hot environments by more than 50%. Currently, steel wire is often air-dried after phosphating. However, due to the lack of dedicated drying equipment, this method suffers from long drying cycles and low efficiency. Therefore, it is necessary to design a phosphating device capable of drying the steel wire surface. Summary of the Invention

[0003] The purpose of this invention is to provide a phosphating device for steel wire surface, which has the advantage of a short drying cycle after phosphating.

[0004] The technical solution adopted is as follows:

[0005] A steel wire surface phosphating device includes a frame, a phosphating tank at the lower end of the frame, a phosphating solution filled in the phosphating tank, multiple upper guide wheels on the frame, multiple lower guide wheels in the phosphating tank below the upper guide wheels, a drive mechanism connected to both the upper and lower guide wheels on the frame, a drying cylinder corresponding to the upper guide wheels on the frame, multiple heating rings spaced apart on the outer side of the drying cylinder, multiple air outlet pipes inserted into the drying cylinder on the heating rings, and a hot air unit on the frame, the hot air unit including air supply pipes connected to each heating ring.

[0006] Preferably, a horn tube is provided at one end of the drying cylinder near the upper guide wheel.

[0007] Preferably, all the air outlet pipes are inclined, with the air outlet pipes inclined toward one end of the horn pipe.

[0008] Preferably, the drying cylinder is inclined, and the end of the drying cylinder closest to the phosphating tank is lower.

[0009] Preferably, the sides of the lower guide wheels are provided with stirring plates.

[0010] Preferably, both the upper guide wheel and the lower guide wheel are V-shaped wheels.

[0011] Compared to existing technologies, the advantages are:

[0012] 1. This utility model utilizes a hot air unit to deliver hot air into the drying cylinder. The phosphated steel wire passes through the drying cylinder and is dried by the hot air discharged from the air outlet pipe. The phosphated liquid blown down into the drying cylinder by the hot air flows back into the phosphated pool along the drying cylinder.

[0013] 2. In this utility model, a stirring plate is provided on the side of the lower guide wheel. The stirring plate rotates with the rotation of the lower guide wheel to stir the phosphating solution and prevent the phosphating solution from settling. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a steel wire surface phosphating device according to the present invention.

[0015] Figure 2 This is a top view schematic diagram of a steel wire surface phosphating device according to the present invention.

[0016] Figure 3 This is a front view schematic diagram of a steel wire surface phosphating device according to the present invention.

[0017] Figure 4 This is a side view of a steel wire surface phosphating device according to the present invention.

[0018] In the diagram: 1. Frame; 2. Phosphating tank; 3. Drain valve; 4. Upper guide wheel; 5. Lower guide wheel; 6. Drive mechanism; 7. Stirring plate; 8. Hot air unit; 9. Air duct; 10. Drying cylinder; 11. Heating ring; 12. Horn tube. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments, such as... Figures 1 to 4 As shown:

[0020] Example 1: A steel wire surface phosphating device includes a frame 1, a phosphating tank 2 at the lower end of the frame 1, a phosphating solution filled in the phosphating tank 2, a drain valve 3 at the lower end of the phosphating tank for draining the phosphating solution, multiple upper guide wheels 4 on the frame 1, and multiple lower guide wheels 5 in the phosphating tank 2 below the upper guide wheels 4. The steel wire entering the phosphating tank 2 passes over the upper guide wheels 4 and then downwards under each of the lower guide wheels 5, and then upwards over the upper guide wheels 4. During this process, the phosphating solution phosphates the surface of the steel wire.

[0021] The frame 1 is equipped with a drive mechanism 6 that is connected to both the upper guide wheel 4 and the lower guide wheel 5. The drive mechanism 6 drives the upper guide wheel 4 and the lower guide wheel 5 to rotate synchronously. The frame 1 is equipped with a drying cylinder 10 corresponding to the upper guide wheel 4. The drying cylinder 10 is located at the outlet of the phosphating tank 2. The phosphated steel wire passes through the upper guide wheel 4 and is inserted into the drying cylinder 10 and then passes out.

[0022] Multiple heating rings 11 are spaced apart on the outside of the drying cylinder 10. Each heating ring 11 has multiple air outlet pipes inserted into the drying cylinder 10. A hot air unit 8 is installed on the frame 1. The hot air unit 8 includes air supply pipes 9 that are connected to each heating ring 11. The hot air unit 8 delivers hot air into the drying cylinder 10. The phosphated steel wire passes through the drying cylinder 10 and is dried by the hot air discharged from the air outlet pipes. The phosphated liquid blown down into the drying cylinder 10 by the hot air flows back into the phosphate bath 2 along the drying cylinder 10, thus shortening the drying cycle of the phosphated liquid on the surface of the steel wire.

[0023] Example 2: A steel wire surface phosphating device includes a frame 1, a phosphating tank 2 at the lower end of the frame 1, a phosphating solution filled in the phosphating tank 2, a drain valve 3 at the lower end of the phosphating tank for draining the phosphating solution, multiple upper guide wheels 4 on the frame 1, and multiple lower guide wheels 5 in the phosphating tank 2 below the upper guide wheels 4. The steel wire entering the phosphating tank 2 passes over the upper guide wheels 4 and then downwards under each of the lower guide wheels 5, and then upwards over the upper guide wheels 4. During this process, the phosphating solution phosphates the surface of the steel wire.

[0024] The frame 1 is equipped with a drive mechanism 6 that is connected to both the upper guide wheel 4 and the lower guide wheel 5. The drive mechanism 6 drives the upper guide wheel 4 and the lower guide wheel 5 to rotate synchronously. Both the upper guide wheel 4 and the lower guide wheel 5 are V-shaped wheels, which facilitates the limiting of the steel wire. The side of the lower guide wheel 5 is equipped with a stirring plate 7. The stirring plate 7 rotates with the rotation of the lower guide wheel 5 to stir the phosphating solution and prevent the phosphating solution from settling.

[0025] The frame 1 is equipped with a drying cylinder 10 corresponding to the upper guide wheel 4. The drying cylinder 10 is located at the outlet of the phosphating tank 2. After phosphating, the steel wire passes through the upper guide wheel 4 and is inserted into the drying cylinder 10 and then passes out. A horn tube 12 is provided at one end of the drying cylinder 10 near the upper guide wheel 4, which facilitates the steel wire to pass through.

[0026] Multiple heating rings 11 are spaced apart on the outside of the drying cylinder 10. Each heating ring 11 has multiple air outlet pipes inserted into the drying cylinder 10. A hot air unit 8 is installed on the frame 1. The hot air unit 8 includes air supply pipes 9 that are connected to each heating ring 11. The air outlet pipes are all inclined, with one end of the air outlet pipe inclined toward the horn pipe 12, so as to blow off the excess phosphating liquid on the steel wire and let it flow back into the phosphating tank 2 along the drying cylinder 10. The drying cylinder 10 is inclined, and the end of the drying cylinder 10 closer to the phosphating tank 2 is lower, which facilitates the return of the phosphating liquid in the drying cylinder 10.

[0027] The working principle is as follows:

[0028] The steel wire is introduced above the phosphating tank 2. After passing the upper guide wheel 4, the steel wire goes down and passes under each of the lower guide wheels 5. Then it goes up and passes over the upper guide wheel 4 and enters the drying cylinder 10. The drive mechanism 6 and the hot air unit 8 are started. The hot air unit 8 delivers hot air into the drying cylinder 10. The phosphated steel wire passes through the drying cylinder 10 and is dried by the hot air discharged from the air outlet pipe. The phosphating liquid blown down into the drying cylinder 10 flows back into the phosphating tank 2 along the drying cylinder 10, shortening the drying cycle of the phosphating liquid on the surface of the steel wire.

[0029] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A phosphate coating device for steel wire, characterized in that: The equipment includes a frame (1), a phosphating tank (2) at the lower end of the frame (1), a phosphating solution filled in the phosphating tank (2), multiple upper guide wheels (4) on the frame (1), multiple lower guide wheels (5) in the phosphating tank (2) below the upper guide wheels (4), a drive mechanism (6) connected to both the upper guide wheels (4) and the lower guide wheels (5) on the frame (1), a drying cylinder (10) corresponding to the upper guide wheels (4) on the frame (1), multiple heating rings (11) spaced apart on the outside of the drying cylinder (10), multiple air outlet pipes inserted into the drying cylinder (10) on the heating rings (11), and a hot air unit (8) on the frame (1), the hot air unit (8) including air supply pipes (9) connected to each heating ring (11).

2. The steel wire surface phosphating device as described in claim 1, characterized in that: The drying cylinder (10) is provided with a horn tube (12) at one end near the upper guide wheel (4).

3. The steel wire surface phosphating device as described in claim 2, characterized in that: All the air outlet pipes are inclined, with the air outlet pipes inclined toward one end of the horn pipe (12).

4. The steel wire surface phosphating device as described in claim 1, characterized in that: The drying cylinder (10) is inclined, and the end of the drying cylinder (10) closer to the phosphating tank (2) is lower.

5. The steel wire surface phosphating device as described in claim 1, characterized in that: The lower guide wheel (5) is provided with a stirring plate (7) on its side.

6. The steel wire surface phosphating device as described in claim 1, characterized in that: Both the upper guide wheel (4) and the lower guide wheel (5) are V-shaped wheels.

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