Surface treatment is the process of processing or treating the surface of a material to improve its performance, function or appearance. These treatments can include physical, chemical or mechanical methods, designed to enhance the material’s corrosion resistance, wear resistance, hardness, finish or other characteristics. Surface treatment is widely used on materials such as metals, plastics, glass, ceramics, etc. to meet specific engineering needs or aesthetic requirements.

There are two basic types of surface treatment
1. Metal finishing that adds a layer of material to the surface of a part to enhance its performance or appearance, including painting, powder coating, anodizing and electroplating. 2. Metal finishing that removes from the surface of a part: Removing surface material to improve its finish or performance, including grinding, polishing and abrasion

Why do we need surface treatment?

Surface treatment is a method of changing the surface properties of materials by chemical, mechanical, physical or electrochemical methods. Its main purpose is:
1. Anti-corrosion: Prevent material corrosion by galvanizing, painting, electroplating and other methods.
2. Improve wear resistance: Improve material hardness and wear resistance by quenching, carbonitriding, etc.
3. Improve appearance: Improve product aesthetics by polishing, electroplating, and spraying.
4. Enhance adhesion: Increase the adhesion of coatings or adhesives by sandblasting, chemical treatment, etc.
5. Improve electrical properties: Improve electrical conductivity and thermal conductivity by gold plating, silver plating, etc.
6. Improve surface cleanliness: Remove surface contaminants by pickling and ultrasonic cleaning.
7. Reduce weight: Reduce material weight while maintaining performance by anodizing.
8. Special functions: Give materials specific functions such as hydrophobicity, self-cleaning, and antibacterial properties.

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