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Surface treatment method for metal workpiece

A metal workpiece, surface treatment technology, applied in the direction of surface reaction electrolytic coating, anodizing, electrolytic coating, etc., can solve the problem of conductive or grounded area decrease in conductivity, easy to be oxidized or corroded, etc., to improve poor conductivity, The effect of good electrical conductivity, good surface properties

Inactive Publication Date: 2007-09-12
SHENZHEN FUTAIHONG PRECISION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the good activity of metals such as magnesium, aluminum, titanium, etc., they are easily oxidized or corroded, resulting in a decrease in the conductivity of the conductive or grounding area.

Method used

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Examples

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no. 1 approach

[0010] The first embodiment of the surface treatment method of the metal workpiece described in the present invention comprises the following steps:

[0011] A metal workpiece is provided, which can be aluminum, titanium or alloy products thereof. Wherein the surface of the metal workpiece has a region to be plated with a metal layer and a region to be anodized. The area to be plated is used for grounding or electrical connection with other electronic components, and the area to be anodized needs to be treated with anodic surface treatment to obtain anti-corrosion surface properties.

[0012] A masking layer is coated on the area to be anodized on the surface of the metal workpiece. The masking layer is a coating containing a resin component soluble in an organic solvent, such as ink, paint, and the like. The method of applying the masking layer can be brushing, spraying or screen printing to protect the area from being plated in the next step.

[0013] A metal layer is pla...

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PUM

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Abstract

This invention relates to a surface process method of a metal piece including the following steps: providing a metal workpiece with a region to be plated with a metal layer and an anode process region on the surface, and a veil is coated on the anode process region and a metal layer is plated on the metal layer region, then the veil on the anode process region is removed to expose said anode process region, a veil is coated on the metal layer coated on the surface of the metal workpiece and an anode oxidation layer is formed on the anode region to remove the veil on the plated metal layer of the metal workpiece to expose said metal layer.

Description

【Technical field】 [0001] The invention relates to a surface treatment method for metal workpieces, in particular to an anodic treatment method for the surface of metal workpieces. 【Background technique】 [0002] As we all know, alloy materials such as aluminum and titanium have the advantages of high strength and light weight, and are widely used in aviation, electronics, communication and other fields. However, magnesium, aluminum, titanium and other alloy materials are prone to wear and corrosion. In order to improve the surface quality of magnesium, aluminum, titanium and other alloy materials, the industry usually adopts anodic treatment process to achieve. [0003] The surface of the anodized metal workpiece is not conductive, and due to its internal metal characteristics, the anodized metal workpiece will still have an impact on the radio frequency electromagnetic field. Therefore, when the anodized metal workpiece is used in electronic products, it usually needs to h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F17/00C25D11/02
CPCC25D11/08C25D11/16C25D5/022C25D11/26C25D11/022
Inventor 高德峰张小鹏
Owner SHENZHEN FUTAIHONG PRECISION IND CO LTD
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