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Vacuum sputtering EMI film and electrophoresis combined coating technology for processing micro-arc oxidation workpiece

A micro-arc oxidation and electrophoretic coating technology, applied in vacuum evaporation plating, metal material coating process, anodizing and other directions, can solve the problems of wasting paint, environmental pollution, low operation efficiency, etc., and achieve the effect of good application prospects.

Inactive Publication Date: 2009-03-04
MITAC PRECISION TECH(KUNSHAN) CORP
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Problems solved by technology

[0003] As we all know, most of the micro-arc oxidation workpieces used in production often need to be reprocessed, such as anti-EMI (Electromagnetic Interference translated as electromagnetic interference) treatment, coating treatment, etc. The existing EMI technology uses water electroplating to pollute the environment. , while the traditional coating techniques mainly include spray coating, electrostatic, powder coating, etc., but there are inevitable environmental pollution problems in terms of environmental protection. Low

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  • Vacuum sputtering EMI film and electrophoresis combined coating technology for processing micro-arc oxidation workpiece

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Embodiment Construction

[0018] see figure 1 , is a process flow diagram of a preferred embodiment of the micro-arc oxidation workpiece vacuum sputtering EMI film combined with electrophoretic coating processing technology of the present invention.

[0019] like figure 1 As shown, the process flow is:

[0020] Step 101, select the base material, the base material can be passivable metals such as Al, Mg, Ti or alloys thereof, and the aluminum alloy base material is selected in this embodiment;

[0021] Step 102, pre-treating the surface of the base material, the aluminum alloy base material is degreased, ultrasonically cleaned, dried, and set aside for use;

[0022] Step 103, micro-arc oxidation treatment, put the cleaned aluminum alloy base material into the electrolyte solution, the metal base material is used as the anode, and the stainless steel is used as the cathode, and the micro-arc oxidation treatment is performed. By controlling the process parameters such as voltage and time, a ceramic la...

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Abstract

The invention provides a process of micro arc oxidized work piece vacuum EMI film sputtering and electrophoretic coating, which comprises the following procedures: base material selection -> base plate surface pre-treatment -> micro arc oxidation -> EMI film sputtering -> electrophoretic coating; first, a selected base material receive surface pre-treatment and micro arc oxidation treatment, to obtain a micro arc oxidized work piece; the micro arc oxidized work piece is cleaned and coated with a metal layer by EMI sputtering, so that the surface of the micro arc oxidation work piece is EMI resistant and conductive; the conductive micro arc oxidized work piece receives electrophoretic coating; the process has simple procedures, high yield, and very good application prospect because the work piece treated by the process has the effect of ceramics, color transparency and EMI resistance.

Description

【Technical field】 [0001] The invention relates to a micro-arc oxidation workpiece surface processing technology, and in particular to a process for processing micro-arc oxidation workpieces by using vacuum sputtering EMI film combined with electrophoretic coating. 【Background technique】 [0002] Micro-arc oxidation technology has developed rapidly due to its simple process, high efficiency, no pollution, and strong processing capacity. Microarc oxidation (MAO) is the abbreviation of micro-plasma surface ceramicization technology, a high-tech that has developed rapidly at home and abroad in recent years. MAO is a high-quality reinforced ceramic film formed in situ on the surface of workpieces made of Mg, Al, Ti, Zr, Ta, Nb and other metals or their alloys (called Valve Metal). This technology is a surface modification technology of metal materials with broad application prospects. [0003] As we all know, most of the micro-arc oxidation workpieces used in production often n...

Claims

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Application Information

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IPC IPC(8): C23C28/00C25D11/02C23C14/34C23C14/06C25D13/00
Inventor 郭雪梅吴政道
Owner MITAC PRECISION TECH(KUNSHAN) CORP
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