What are the surface treatments for injection pump castings

In the production process of jet pump castings, surface treatment is a crucial link, which can improve the wear resistance, corrosion resistance and aesthetics of castings, and also improve the surface roughness and dimensional accuracy of castings.

Spraying is a simple and economical surface treatment method, which is suitable for improving the corrosion resistance and wear resistance of castings. Common spraying materials include anti-rust paint, coating, coating, etc., which form a protective film to prevent corrosion and wear on the surface of castings.

Plating is a method of depositing metal or alloy on the surface of castings, which can improve the hardness, wear resistance and corrosion resistance of castings. Common plating layers include chrome plating, nickel plating, zinc plating, etc., which make the surface of castings smooth, strong and have good appearance.

Polishing polishes the surface of castings by mechanical or chemical methods, removes surface roughness and oxide layer, and makes it have a smooth and bright surface. Polishing can improve the beauty and touch of castings, and is suitable for some applications requiring high surface finish.

Heat treatment changes the structure and properties of castings by heating and cooling to improve their hardness, strength and wear resistance. Common heat treatment processes include tempering, quenching, normalizing, etc., which are selected according to the specific requirements of the castings to give the castings ideal organization and performance.

Sandblasting is a method of using high-pressure airflow to spray sand particles onto the surface of the casting to remove oxide scale, impurities and roughness. Sandblasting can improve the surface quality of castings, increase surface roughness and adhesion, and is suitable for castings that need to be painted or painted.

Chemical treatment is a method of using chemical methods to change the chemical composition and properties of the casting surface, such as pickling, alkali washing, anodizing, etc. Chemical treatment can remove the surface oxide layer, improve the surface finish and adhesion, and make the casting surface more uniform and stable.

Spray coating is a method of spraying special coatings onto the surface of castings to form a protective film, which can improve the wear resistance, corrosion resistance and high temperature resistance of castings. Common spray coatings include wear-resistant coatings, ceramic coatings, coatings, etc., and suitable coating materials are selected according to different needs.