How is precision castings rust-proof?

Corrosion or discoloration of metals or alloys in the atmosphere due to oxygen, moisture, acids, salts and humid air is known as rust or rust, which can turn metal surfaces with very high strength into low-strength compounds. For this reason, investment castings often require intermediate rust prevention. For rust prevention, water rust or oil rust is usually used. No matter which method is used to prevent rust, the castings are washed in advance to remove the dirt on the surface and promote the formation of a passivation film. The composition, temperature and use of the scrubbing solution. After the casting is washed, it should be dried with hot, dry compressed air, and then rust-proof treatment.
The engineering projects recently undertaken by the precision casting company have been completed and the cooperation between the two parties is very pleasant and will maintain a long-term cooperative relationship.