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Technological process for lauminizing or coppering on aluminium or aluminium-magnesium alloy substrate

A process method and technology of aluminum-magnesium alloy, applied in the field of surface treatment of aluminum or aluminum-magnesium alloy products, can solve the problems of easy occurrence of common magnetic phenomenon, poor decorative effect, insufficient adhesion, etc., and achieve improved appearance and enhanced appearance. Mirror surface, the effect of improving adhesion

Inactive Publication Date: 2007-11-07
YULIN AUTOMOBILE FITTINGS KUNSHAN
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Problems solved by technology

[0004] The invention provides a process for plating aluminum or copper on an aluminum or aluminum-magnesium alloy base material, the purpose of which is to solve the problems of high pollution, poor heat resistance, insufficient adhesion and easy occurrence of common magnetism existing in the prior art , poor decorative effect, etc., so as to provide a process method that is not only environmentally friendly, but also enables the coating to have excellent adhesion and heat resistance, and has a strong decorative appearance

Method used

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  • Technological process for lauminizing or coppering on aluminium or aluminium-magnesium alloy substrate

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Embodiment

[0072] Embodiment: A process method for plating aluminum or copper on the surface of aluminum or aluminum-magnesium alloy automobile wheel hub, which is composed of five steps of surface pretreatment, bottom coating, medium coating, PVD process and outer coating.

[0073] The first step is to pretreat the surface of the wheel hub

[0074] Referring to Figure 1, firstly, the surface of the hub must be ground flat with a material not thicker than P400, so that the surface of the hub has good plumpness and sufficient adhesion after the bottom coating is applied.

[0075] Then, the wheel hub is cleaned by seven water washing devices. The first one is sprayed and rinsed in tap water at 50℃-60℃ for about 60 seconds. This process is to remove the residual dirt (such as dust) on the surface of the wheel hub. Then, six consecutive normal temperature tap water sprays are carried out, and the time of each spray is about 45 seconds to ensure the cleanliness of the wheel hub when it enters...

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Abstract

The technological process of forming aluminum or copper coating on aluminum or Al-Mg alloy base material includes the following steps: 1. polishing the surface and washing; 2. applying color paint containing acrylate resin to form the base coating; 3. applying paint containing polybutadiene resin to form the intermediate coating; 4. ultrahigh vacuum magnetically controlled sputtering to form aluminum or copper coating onto the intermediate coating, with the coating color being altered by means of the technological parameters; and 5. painting transparent outer protecting coating. The present invention provides a unique surface treating process, and the coating has environment friendship, excellent adhesion, high heat resistance and good decorating effect.

Description

technical field [0001] The invention relates to a surface treatment method for aluminum or aluminum-magnesium alloy products, in particular to a process for plating aluminum or copper on an aluminum or aluminum-magnesium alloy base material. This method is mainly used in automobile wheels, computer casings, mobile phone casings and other products, and can produce decorative metal coatings with good wear resistance and heat resistance and strong plumpness on the surface of the products. Background technique [0002] Electroplating a metal coating layer on the substrate of aluminum or aluminum-magnesium alloy products is a common method for surface treatment of automobile wheels, computer casings, mobile phone casings and other products. Take car wheels as an example. In the past, aluminum and aluminum-magnesium alloy car wheels (car rims) were surface treated by traditional water electroplating. This process first polishes the wheel hub to make the surface smooth, and then e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/00B05D3/00B05D7/24C23C14/35C23C14/54C09D133/02C09D163/00C09D161/20C09D147/00C09D5/12
CPCC23C14/165C23C14/021
Inventor 黄水祥
Owner YULIN AUTOMOBILE FITTINGS KUNSHAN
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