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Surface treating method of aluminum alloy material

A technology of aluminum alloy material and surface treatment, which is applied in the direction of metal material coating process, superimposed layer plating, liquid chemical plating, etc., can solve problems such as micro-arc oxidation film damage, achieve good chemical corrosion resistance, good adhesion effect

Inactive Publication Date: 2011-05-25
海盐宏茂五金制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the defect that the micro-arc oxidation film is damaged in the process of pre-dipping and light extraction in the above-mentioned prior art, and to provide a surface treatment method for aluminum alloy materials that does not damage the micro-arc oxidation film

Method used

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Examples

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Embodiment 1

[0028] This embodiment is used to illustrate the surface treatment method of the aluminum alloy material provided by the present invention.

[0029] 1. Pretreatment

[0030] The aluminum alloy 6061 mobile phone shell samples were mechanically polished. Firstly, rough polishing was performed with red polishing paste to remove coarse wear marks and scratches on the surface of the sample, and then fine polishing was performed with white polishing paste to obtain a bright mirror surface.

[0031] Ultrasonic wax removal is then performed. Dip the above-mentioned polished sample into a wax removal cylinder, and turn on the ultrasonic power switch. The wax removal water is zinc alloy wax removal water from Shangma Company, and the wax is removed at a temperature of 75°C for 1min. After the wax removal is completed, the sample is cleaned with running water.

[0032] Next, cathodic electrolytic degreasing is carried out. Hang the sample after the above wax removal on the cathode ro...

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Abstract

The invention discloses a method for processing the surface of an aluminum alloy material, which comprises the following steps: forming a micro-arc oxidation film on the surface of the aluminum alloy material; removing part of the micro-arc oxidation film on the surface of the aluminum alloy material to expose part of the surface of the aluminum alloy material; performing preimpregnation and zincimpregnation; and performing chemical plating to deposit a metal layer on the exposed part, wherein in the preimpregnation process, an acidulous preimpregnation liquid is adopted to perform the preimpregnation on the aluminum alloy material. With the method, an aluminum alloy product with special requirement can be obtained, and the aluminum alloy product not only can obtain various excellent performances endowed by the micro-arc oxidation film without being influenced at all, but also can obtain function that part region needs electric conductance.

Description

technical field [0001] The invention relates to a surface treatment method of an aluminum alloy material. Background technique [0002] Aluminum alloy materials have a series of excellent properties, such as low density, high specific strength and specific stiffness, good elasticity, good impact resistance, corrosion resistance, high electrical conductivity, high thermal conductivity, easy surface coloring, good processability and high recycling Renewability, etc., so it is widely used in aerospace, aviation, automobile, construction and electronics industries. [0003] However, due to the low hardness and poor wear resistance of aluminum alloys, surface treatment is required to impart various excellent functions. The natural oxide film of aluminum and aluminum alloy is usually only 0.01-0.015μm, and the film layer is loose and porous, uneven and continuous, so it cannot be used as a reliable protective film layer. [0004] In the past 20 or 30 years, people have developed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/00C25D11/04C23C18/31C23C18/18
Inventor 陈梁李爱华彭波周瑾
Owner 海盐宏茂五金制品有限公司
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