What are the advantages of using coating surface treatment for engineering machinery castings?

The use of coating surface treatment in the production process of construction machinery casting has many advantages. First, the coating forms a protective layer of metal or alloy, which effectively isolates the casting surface from direct contact with the external environment, thereby improving the corrosion resistance of construction machinery casting and extending its service life. Secondly, during the formation process, the coating increases the hardness of the casting surface by changing the structure of the metal or alloy, which helps to improve the wear resistance of the casting and extend its service life.

In addition, the use of coating surface treatment can also improve the aesthetics of construction machinery casting. The coating provides a uniform and smooth surface, making construction machinery castings look neater and more attractive. It is especially suitable for occasions where a refined appearance is required, such as display-type construction machinery and equipment.

At the same time, during the formation of the coating, the metal or alloy forms a strong bond with the surface of the substrate, improving the adhesion of the coating. This helps ensure that the coating is less likely to peel or fall off, maintaining the stability of construction machinery casting. In addition, some environmentally friendly coating technologies use chromium-free or low-chromium processing methods, which reduce environmental pollution and comply with modern environmental protection standards.