Introduction to surface treatment types for CNC machined parts
1.Aluminum Oxidation
Anodizing is a process that uses an electrolytic solution to form a protective oxide layer on the surface of a part. The layer provides excellent corrosion resistance and improved abrasion resistance. Anodizing can be done in a variety of colors, making it an attractive option for decorative applications.
2.Electroplating
Electroplating is the deposition of a thin layer of metal on the surface of a part. Plating can be done with a variety of metals including chrome, nickel, copper and gold. This finish provides excellent corrosion resistance, as well as improved electrical conductivity and aesthetics.
3.Powder Coating
Powder coating involves applying a dry powder to the surface of a part, which is then heated to form a hard, durable coating. Powder coating provides excellent corrosion and weathering resistance, as well as abrasion resistance. It can also be finished in a variety of colors, making it an attractive option for decorative applications.
4.Chemical Conversion Coating
Chemical conversion coating involves the formation of a thin, chemically bonded layer on the surface of the part. This layer provides excellent corrosion resistance as well as improved adhesion for subsequent painting or other surface treatments. Common types of chemical conversion coatings include chromate and phosphate coatings.
5.Heat Treatment
Heat treating involves subjecting a part to high temperatures to alter its properties. This can include hardening, tempering and annealing. Heat treating can improve the strength, durability and wear resistance of a part.
6.Laser Marking
Laser marking involves the use of a laser to create a permanent, high-contrast mark on the surface of a part. Laser marking can be used for both functional and decorative purposes and can be performed on a variety of materials.
In summary, there are a variety of surface treatments that can be applied to CNC machined parts to improve their durability, corrosion resistance and aesthetics. Anodizing, plating, powder coating, chemical conversion coating, heat treating and laser marking are all common surface treatments that can help extend the life of CNC machined parts. By choosing the right finish for your application, you can ensure that your CNC machined parts will be protected and function as intended for years to come.