In the machining manufacturing industry, sheet metal processing technology is essential. This process can decorate the surfaces of design products while providing protective benefits. In custom sheet metal fabrication, common surface treatments include electroplating, powder coating, and other finishing processes. Follow the high-precision sheet metal processing company to see how to correctly operate the surface treatment of sheet metal processing parts.

1. Electroplating includes: hot dip galvanized (colorful zinc, milky zinc, dark blue zinc, gray black zinc), nickel plating, stainless steel, etc. The protective layer is primarily applied to the surface of the raw material for both protection and decoration.

2. Painting includes painting and electrostatic powder coating. After the preparation of raw materials, the sheet metal bending process uses a spray gun to spray the architectural coating on the surface of the metal material sheet product workpiece, and the architectural coating produces a coating on the surface of the product workpiece. After dry mania, it plays a safeguard effect.

3. Other surface treatment methods: anodic oxidation, chromium trioxide solution, metal wire drawing, sand blasting, air oxidation, etc.

common problems in the surface treatment operation process of sheet metal processing

1. all electrochemical solutions should be carried out in the case of components, in this whole process, the chemical solution will be trapped in the gap of the module, causing etching

2. welding components can be solved by chemical engineering, but not by electrochemical (including electroplating, anodizing

3. Aluminum alloy castings cannot be anodized with hydrochloric acid

4. long thin cylindrical (the length of more than 2 times the diameter) is usually not suitable for electrochemical solution, because there is no film layer on the inner surface; in special cases, unique countermeasures can be adopted to meet the requirements.

5. components with shaped grooves or tiny holes (usually called deep layers exceeding twice the diameter or opening spacing, but excellent processing technology is likely not limited), it is not easy to completely cover the inner surface.

6. Carry out pickling and phosphating on cast iron before painting, to improve the adhesion of the coating film