Lead dioxide barrel type anode for plating hard chromium on piston rod of automobile shock absorber

Abstract

The utility model discloses a lead dioxide barrel type anode for plating hard chromium on a piston rod of an automobile shock absorber, which comprises a barrel-shaped titanium mesh; one end of the titanium tube is coaxially and fixedly connected to one end of the titanium mesh; the two connecting lifting lugs are fixedly connected to the other end of the titanium tube, and double screw holes are formed in the upper ends of the two connecting lifting lugs and are used for integrally combining and connecting the lead dioxide barrel type anode; wherein the two connecting lifting lugs are symmetrically arranged. The lead dioxide plating layers are electroplated on the two surfaces of the titanium mesh, and the thickness of the lead dioxide plating layers is 0.5-0.7 mm; the connecting lifting lugs of the single barrel type anodes are connected with the anode bars through nuts, 12 barrel type anodes are placed in one row, 4 rows are arranged, and 48 anodes are arranged on the whole station. 48 anodes at the whole station are connected with a production line anode copper bar after being assembled and are used for a production line. The lead dioxide barrel type anode for plating the hard chromium on the piston rod of the automobile shock absorber, provided by the utility model, is uniform in electric conduction, safe, environment-friendly, compact in structure and wide in application.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile shock absorbers, and particularly relates to a lead dioxide barrel anode used for hard chrome plating of a piston rod of an automobile shock absorber. Background Art

[0002] The anodes that can be used in hard chrome plating production lines generally use pure lead, lead-antimony alloy and lead-tin alloy as anodes.

[0003] Pure lead anodes have good conductivity and low price, but they are easily corroded and dissolved in plating solutions containing fluorosilicic acid and are generally seldom used.

[0004] Lead-antimony alloy contains 6% to 8% antimony. Its mechanical properties and corrosion resistance are better than pure lead. It is relatively stable in chromic acid, but it corrodes faster in plating solutions containing fluorine borate.

[0005] Lead and lead alloy anodes are prone to produce lead peroxide during use, which will affect the distribution of current, so the anodes should be cleaned frequently. If the anode is soaked in chromic acid for a long time without use, the surface will be passivated, and high-voltage electrolytic activation is often required before use to work properly.

[0006] Lead-tin alloy, with a tin content of 10%, can improve conductivity and corrosion resistance. However, in the actual production process, the tin content is very uneven, which leads to uneven conductivity of the entire anode, poor conductivity, and poor corrosion resistance.

[0007] For piston rods, the poor conductivity of the anode leads to poor roundness of the product, and the low current efficiency of the anode wastes electricity. After the anode is corroded, a large amount of lead-tin anode mud will be produced in the plating solution, which not only pollutes the bath solution, but also causes pinholes and pitting on the surface of the piston rod product. The lead-tin anodes currently used are all arranged in a rod-shaped lattice, and this arrangement of anodes will cause uneven conductivity of the piston rod. Utility Model Content

[0008] The utility model aims to provide a lead dioxide barrel anode for hard chrome plating of automobile shock absorber piston rods, which adopts a hollow barrel-shaped titanium mesh welded with a titanium tube, and the overall structure is uniformly conductive, corrosion-resistant, compact and has a wider application.

[0009] The technical solution provided by the utility model is:

[0010] Titanium mesh, which is barrel-shaped;

[0011] A titanium tube, one end of which is coaxially fixedly connected to one end of the titanium mesh;

[0012] Two connecting lugs, which are fixedly connected to the other end of the titanium tube;

[0013] Wherein, the two connecting ears are symmetrically arranged.

[0014] Lead dioxide coating is electroplated on both sides of the titanium mesh.

[0015] Preferably, the lead dioxide coating thickness is 0.5-0.7 mm. The use of barrel anodes made of insoluble lead dioxide can greatly reduce the generation of anode mud and improve product quality.

[0016] Preferably, the titanium mesh, the titanium tube and the two connecting lugs are all made of No. 2 titanium TA2.

[0017] Preferably, the titanium mesh is fixed into a barrel shape by spot welding;

[0018] Preferably, the titanium mesh is bent into a barrel shape and has a diameter slightly larger than that of the titanium tube;

[0019] Preferably, the titanium tube and the titanium mesh are connected by electric welding.

[0020] Preferably, the connecting lug is provided with double screw holes for integrally combining and connecting the lead dioxide barrel anode.

[0021] The beneficial effects of the utility model are:

[0022] (1) The lead dioxide barrel anode for hard chrome plating of automobile shock absorber piston rod provided by the utility model has uniform conductivity and improves product quality.

[0023] (2) The lead dioxide barrel anode for hard chrome plating of automobile shock absorber piston rod provided by the utility model has high corrosion resistance of titanium metal, greatly reduces the generation of anode mud, and is safer and more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The utility model is a schematic diagram of the overall structure of the lead dioxide barrel anode used for hard chrome plating of automobile shock absorber piston rod.

[0025] Figure 2 The utility model is a schematic diagram of the connection ear of the lead dioxide barrel anode used for hard chrome plating of the automobile shock absorber piston rod. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0027] like Figures 1-2As shown, the utility model provides a lead dioxide barrel anode for hard chrome plating of automobile shock absorber piston rod, including a titanium mesh 110, which is in the shape of a barrel; a titanium tube 111, which is coaxially fixedly connected to one end of the titanium mesh; a connecting lug 120, which is fixedly connected to the other end of the titanium tube 111, and two are provided, which has a better fixing effect; wherein the two connecting lugs 120 are symmetrically arranged; wherein the titanium mesh 110 is plated with lead dioxide on both sides, and the thickness is 0.5-0.7mm, and the lead dioxide is plated on the titanium mesh. The barrel anode made of insoluble lead dioxide material can greatly reduce the generation of anode mud, which not only improves the roundness of the product, but also makes it safer and more environmentally friendly, and reduces the generation of waste. wherein the titanium mesh 110, the titanium tube 111, and the connecting lug 120 are all made of No. 2 titanium TA2. wherein the titanium mesh 110 is connected and bent into a barrel shape along the outer side of the titanium tube, and it is fixed by spot welding. the titanium tube 110 is connected to the titanium mesh 111 by electric welding. The connecting ear 120 is provided with double screw holes for integrally assembling and connecting the lead dioxide barrel anode.

[0028] The utility model provides a lead dioxide barrel anode for hard chrome plating of automobile shock absorber piston rods, wherein the titanium mesh 110 is bent into a barrel shape along the titanium tube, and the diameter of the titanium mesh 110 after bending is slightly larger than the diameter of the titanium tube 111, so that the titanium mesh 110 can be welded on the titanium tube. The connecting lug 120 is a rectangular sheet made of No. 2 titanium TA2, and the screw hole size set on it is a 12mm screw hole, which is located at the upper end of the connecting lug 120.

[0029] After the single anode is welded, it is in a hollow state, the anode conducts electricity more evenly, and the barrel structure makes the roundness and taper size of the piston rod more consistent, resulting in better product quality.

[0030] The utility model provides a lead dioxide barrel anode for hard chrome plating of automobile shock absorber piston rods. The connecting lugs of the single barrel anode are connected to the anode rod through nuts. Twelve barrel anodes are placed in a row, and 4 rows are arranged. The whole station is provided with 48 anodes. After the 48 anodes in the whole station are assembled, they are connected to the anode copper bar of the production line and used in the production line.

[0031] The anodes conventionally used in hard chrome plating lines are generally lead-tin alloys with a tin content of 10%, which improves conductivity and corrosion resistance. However, in the actual production process, the tin content is very uneven, which leads to uneven conductivity of the entire anode, poor conductivity, and poor corrosion resistance. For the piston rod, the poor conductivity of the anode leads to poor roundness of the product, and the low efficiency of the anode current wastes electricity. After the anode corrodes, a large amount of lead-tin anode mud will be produced in the plating solution, which not only pollutes the tank liquid, but also causes pinholes and pitting on the surface of the piston rod product. The lead-tin anodes currently used are all arranged in a rod-type lattice. This arrangement of anodes will cause uneven conductivity of the piston rod. The utility model provides a lead dioxide barrel anode for hard chrome plating of automobile shock absorber piston rods. The main structure is made of No. 2 titanium TA2, which has the advantages of high corrosion resistance and good conductivity, improves the roundness of the product and improves the product quality.

[0032] The utility model provides a lead dioxide barrel anode for hard chrome plating of automobile shock absorber piston rods. The barrel anode diameter is designed according to the piston rod diameter, which can be applied in a wider range and improve production efficiency. The lead dioxide anode welded into a barrel structure by utilizing the high conductivity and high corrosion resistance of titanium metal has uniform conductivity, safety and environmental protection, compact structure, flexible size change, and wider application.

[0033] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A lead dioxide barrel anode for hard chrome plating of automobile shock absorber piston rod, characterized in that: include: Titanium mesh, which is barrel-shaped; A titanium tube, one end of which is coaxially fixedly connected to one end of the titanium mesh; Two connecting lugs, which are fixedly connected to the other end of the titanium tube; Wherein, the two connecting lugs are symmetrically arranged; Lead dioxide coating is electroplated on both sides of the titanium mesh.

2. The lead dioxide barrel anode for hard chrome plating of automobile shock absorber piston rod according to claim 1, characterized in that: The lead dioxide coating thickness is 0.5-0.7 mm.

3. The lead dioxide barrel anode for hard chrome plating of automobile shock absorber piston rod according to claim 1, characterized in that: The titanium mesh, the titanium tube and the two connecting lugs are all made of No. 2 titanium TA2.

4. The lead dioxide barrel anode for hard chrome plating of automobile shock absorber piston rod according to claim 1, characterized in that: The titanium mesh is fixed into a barrel shape by spot welding.

5. The lead dioxide barrel anode for hard chrome plating of automobile shock absorber piston rod according to claim 1, characterized in that: The titanium mesh is bent into a barrel shape, and its diameter is slightly larger than that of the titanium tube.

6. The lead dioxide barrel anode for hard chrome plating of automobile shock absorber piston rod according to claim 1, characterized in that: The titanium tube is connected to the titanium mesh by electric welding.

7. The lead dioxide barrel anode for hard chrome plating of automobile shock absorber piston rod according to claim 1, characterized in that: The upper end of the connecting lifting ear is provided with double screw holes for integrally assembling and connecting the lead dioxide barrel anode.

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