Sheet metal processing is a technology for processing metal sheets. It includes traditional cutting and blanking, blanking, bending and forming methods and process parameters, as well as various cold stamping die structures and process parameters, and various equipment work. Principles and methods of operation also include some new stamping techniques and new processes.
More and more sheet metal processing companies realize that proper surface treatment can make a good decoration and protection for the surface of the product, improve the "face value" of the product, and thus enhance the market competitiveness.
The most commonly used surface treatment methods in sheet metal processing are electroplating and spraying. Electroplating is divided into galvanizing, nickel plating, chrome plating, etc.
The main purpose is to form a layer of metal or alloy protective layer on the surface of the sheet metal workpiece by the principle of electrolysis, which plays a role of protection and decoration.
Spraying is divided into two types: spray painting and powder spraying. After the material is pre-treated, the paint is dispersed into uniform and fine droplets by spray gun gas, and sprayed onto the surface of the sheet metal workpiece to form a coating on the surface of the workpiece. , then heat and dry.
Spraying can protect the workpiece. In addition to the above two methods, there are some other surface treatment methods, such as anodizing, chromate, wire drawing, sand blasting and oxidation, etc., which will not be specifically described here.