Defects in Metal Material Forming Processing, Part 7

Defects in metal forming processes can arise due to various factors, including material properties, process parameters, and environmental conditions. Here are some common defects associated with metal forming:

Corrosion

The process in which the surface of a product contacts the surrounding medium, undergoes chemical or electrochemical reactions, and forms a product film on the surface is called corrosion.

After corrosion, the surface loses its metallic luster and forms corrosion spots of various colors.

The causes of corrosion are: the surface of the product is not clean, there are residual liquids such as water and emulsion, or it is improperly placed and stored, the climate is humid or water droplets invade the surface; there is a corrosive atmosphere in the environment.