Surface coating method of aluminum alloy wheel

A technology of surface coating and aluminum alloy, which is applied in the direction of pretreatment surface, device for coating liquid on the surface, sputtering plating, etc.

Pending Publication Date: 2020-10-13
CITIC DICASTAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface polishing (finishing) technology of aluminum alloy wheels can get a relatively bright surface, but the color is white and bright

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0034] The method of vacuum coating on the surface of the aluminum alloy wheel, the technological process is: grinding and polishing of the surface of the aluminum wheel - chemical passivation treatment of the surface of the aluminum alloy wheel - plasma treatment of the surface of the aluminum alloy wheel - PVD-CVD coating on the surface of the aluminum alloy wheel - spraying transparent powder;

[0035] (1) The surface of the aluminum wheel is polished and polished. The aluminum alloy material is 356.2 aluminum alloy. The surface of the wheel is firstly sanded with 150# sandpaper to remove the oxide skin on the surface and reduce the surface roughness, and then finely polished with 400# sandpaper , to further reduce the surface roughness, then use 800# sandpaper for rough polishing, and finally use mechanical polishing method for polishing or smooth wet polishing, so that the surface of the aluminum alloy wheel can reach the level of mirror brightness.

[0036] (2) Ultrasonic...

example 2

[0044] The method of vacuum coating on the surface of the aluminum alloy wheel, the technological process is: grinding and polishing of the surface of the aluminum wheel - chemical passivation treatment of the surface of the aluminum alloy wheel - plasma treatment of the surface of the aluminum alloy wheel - PVD-CVD coating on the surface of the aluminum alloy wheel - spraying transparent powder;

[0045] (1) The surface of the aluminum wheel is polished and polished. The aluminum alloy material is 356.2 aluminum alloy. The surface of the wheel is firstly sanded with 150# sandpaper to remove the oxide skin on the surface and reduce the surface roughness, and then finely polished with 400# sandpaper , to further reduce the surface roughness, then use 800# sandpaper for rough polishing, and finally use mechanical polishing method for polishing or smooth wet polishing, so that the surface of the aluminum alloy wheel can reach the level of mirror brightness.

[0046] (2) Ultrasonic...

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Abstract

The invention discloses a surface coating method for an aluminum alloy wheel. The surface coating method comprises the following steps of S1, grinding and polishing the aluminum alloy wheel; S2, cleaning the aluminum alloy wheel; S3, immersing the aluminum alloy wheel in a titanium fluoride / zirconium fluoride solution, thereby forming an Al2O3.ZrO2.TiO2 conversion film on the surface of the aluminum alloy wheel; S4, ionizing oxygen with the concentration of 99.999% through radio frequency, and forming oxygen ions to treat the surface of the aluminum alloy wheel; S5, adding acetylene gas whilecarrying out magnetron sputtering coating; and S6, spraying a transparent protective layer, baking and curing. The coating film is better in corrosion resistance, low in cost and low in energy consumption, toxic metal such as hexavalent chromium is not contained, and the technological process is green and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy wheels, in particular to a method for coating the surface of aluminum alloy wheels. Background technique [0002] Aluminum alloy wheels are widely used in passenger cars, and the industry's requirements for surface decoration of aluminum alloy wheels are increasing day by day. Electroplating technology is adopted by aluminum alloy wheels as a surface treatment technology for high-end products. However, a large amount of carcinogenic hexavalent chromium remains on the surface of electroplating wheels during the coating process, and a large amount of hexavalent chromium waste liquid is generated during the electroplating process, which has a relatively large impact on environmental protection. Waste liquid Disadvantages such as high processing cost and high energy consumption for electroplating. On March 1, 2007, my country promulgated the "Administrative Measures for Pollution Control of El...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/00C23C14/02C23C14/35C23C14/06C23C14/16C23C22/34B05D1/06B05D3/02B05D7/14B05D7/24B05D1/38
CPCC23C28/30C23C14/024C23C14/022C23C14/352C23C14/0057C23C14/0635C23C14/165C23C22/34B05D1/06B05D3/0254B05D7/14B05D7/24B05D7/544B05D7/546
Inventor 王再德李军甫吴志勇郑一鸣赵然熊国源杨小禹
Owner CITIC DICASTAL
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