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In this issue, we will talk about the reasons for surface trachoma and holes in the processing of aluminum alloy parts: trachoma and holes appear after the processing of aluminum parts after sandblasting and oxidation surface treatment, which seriously affects the surface texture of the product. This is a problem that often occurs in the industry. It brings our customers There will be a major impact, and in severe cases, it will affect the customer's brand and delivery! Aiming at the above pain points, Xiehe analyzes the causes and countermeasures as follows.

Material: We must use brand-new standard materials for the convenience of materials. We must not use raw materials added by suppliers to add recycled materials for the sake of low cost, which will cause blisters. Therefore, it is very important to choose suppliers when buying raw materials. Choose long-term cooperative suppliers as much as possible. , And large factories to cooperate.

Cutting fluid: Cutting fluid - In order to have good heat dissipation and lubricate during processing, generally there will be some salty ingredients in the cutting fluid. The liquid must contain more water, and the PH value must be controlled to protect the surface of the part.

Turnover box: Because some unknown liquid will remain on the surface of the product during the turnover process, including cutting fluid residues, the parts will not be surface treated for too long and the surface will be severely corroded to produce sand holes. It is necessary to regularly clean the turnover box and update the turnover box. .

Storage environment: For parts stored in a highly acidic and salty environment for more than a week, blisters will appear on the surface because the surface has been corroded, such as the environment of the electroplating factory and the oxidation factory itself.

Oxidation process:

In the process of CNC processing, burrs and peaks are often produced, so over-salt cleaning is a good way during the oxidation process, but it has something to do with the cleaning time. If it is too long, it will cause surface corrosion and blisters, so this process must be strict control.

Shenzhen Xiehe Co., Ltd. is a production-oriented enterprise mainly engaged in precision hardware processing. The main business includes CNC processing, CNC lathe processing, and five-axis processing services for aluminum, copper, stainless steel, iron, titanium alloys, plastics, etc. The business covers electronic products, automobiles, communications, medical, semiconductor, military and many other industries , welcome to contact Xiehe consulting business!