Surface treatment refers to the formation of a surface layer with one or more special properties on the surface of a material by physical or chemical methods. Surface treatment can improve the appearance, texture, function, and other aspects of product performance. A process method that utilizes modern physics, chemistry, metallurgy, and heat treatment techniques to change the condition and properties of the surface of a part and optimize its combination with core materials to meet predetermined performance requirements is called surface treatment technology. The role of surface treatment: improve surface corrosion resistance and wear resistance, slow down, eliminate, and repair material surface changes and damage. Enables ordinary materials to obtain surfaces with special functions. Save energy, reduce costs, and improve the environment.

Metal surface treatment process: surface quenching heat treatment, wire drawing, polishing, powder spraying, aluminum anodizing, surface coating technology, electroplating, passivation, etc.