There are a lot of door and window profiles in the door and window market, but do you know some methods of aluminum surface treatment? The price of aluminum is small, so let's understand that before surface treatment, aluminum materials generally need to be pretreated: degreasing → derusting → cleaning → phosphating or purification, etc.

Most rusted or thick workpieces shall be removed by mechanical methods such as sand blasting and shot blasting, but the surface of workpieces shall be clean and free of scale after mechanical removal.

There are several kinds of aluminum surface treatment processes as follows:

1. Polishing: the function of deburring to overcome defects and making the surface bright. It can be divided into chemical polishing and mechanical polishing.

2. Sand blasting: the purpose of aluminum surface treatment is to overcome and cover up some defects of aluminum alloy in the machining process and to meet some special requirements of customers for product appearance. There are glass sand, tungsten sand, etc., showing different feelings, similar to the rough and dry texture of wool glass, fine sand mold can also show high-grade products.

3. Turning pattern: the surface treatment of aluminum is the treatment method of re processing after the mold is formed. The lathe is used to process the pattern, and the adults show very regular texture features.

4. Metal plating method: it is common, and there is plating process after polishing.

5. Rubbing: it's called drawing. It's similar to the car pattern. It's smooth and continuous on the surface. The difference is that the car pattern is shown as a circular pattern, and the rubbing pattern is shown as a linear pattern.

6. Oxidation (coloring): the purpose of aluminum surface treatment and oxidation is divided into two aspects, which can enhance the physical properties and achieve the purpose of coloring. Generally, it is anodizing, with the purpose of coloring and increasing surface hardness to improve wear resistance, such as micro arc oxidation.

7. Spray: spray a layer of coating on the surface of aluminum material, spray white, spray wood grain, etc., fluorocarbon spray.