Several common surface treatment methods for sheet metal processing are: wire drawing, sandblasting, paint baking, powder spraying, electroplating, anodizing, and silk screen printing. Because the surface of some sheet metal materials does not have the ability to prevent rust and corrosion, effective surface treatment is very necessary. Surface treatment of sheet metal parts can increase the service life of the product in harsh environments, or in order to achieve specific surface effects or functions.

Among the sheet metal processing materials, cold-rolled plates and hot-rolled plates are less resistant to corrosion, and oxidation reactions are prone to occur, and the corrosion continues to deepen. Cause sheet metal processing parts to lose performance or scrap. Therefore, it is necessary to achieve the purpose of anti-corrosion and anti-rust through surface treatment. What are the surface technology of sheet metal processing?

Introduction to the surface treatment process of sheet metal processing parts:

1. Drawing

The so-called sheet metal drawing is to place the material between the upper and lower belts of the drawing machine. The belt is attached to the belt. It is driven by the motor to let the material pass through the upper and lower belts to draw traces on the surface of the material. Different, the thickness of the traces is also different, the main function is to beautify the appearance. In addition, wire drawing is also called rubbing! Commonly used materials for this surface treatment process: generally aluminum and stainless steel plates are considered to be surface treatment methods of wire drawing.

2. Sandblasting

The sand particles are hit on the surface of the workpiece by the wind of the sandblasting machine, forming a dense pit on the surface of the workpiece. The main function is to remove the dirt and rust on the surface of the workpiece, increase the adhesion of the workpiece surface, and do it for the subsequent surface treatment. Prepare. Commonly used materials for this surface treatment process: cold-rolled sheet, hot-rolled sheet, aluminum, etc.

3. Spray paint

Generally refers to liquid spraying. There are two processes: liquid baking paint and self-drying spray paint. Self-drying means that after spraying, it can be cured naturally at room temperature. The cost is lower, but the effect is incomparable with baking paint. The color effect of spray paint will be better, the thickness of the paint film is relatively thin, suitable for some precision products, and the cost is higher. Common materials for this surface treatment process: cold-rolled sheet, hot-rolled sheet, etc.