PTJ Shop is a high-tech company integrating investment casting, cnc machining, investment casting equipment, process transfer, and equipment accessories sales. Next, we will share the rust prevention knowledge of precision castings.
The corrosion or discoloration of metals or alloys in the atmosphere due to oxygen, moisture, acids, salts and humid air is called rust or rust, and it can make the surface layer of metals with high strength into compounds with very low strength. For this reason, investment machining castings often require mid-term antirust treatment. The rust prevention method usually uses water or rust prevention. Regardless of which method is used to prevent rust, the casting must be washed in advance to remove dirt on the surface and promote it to form a passivation film. Composition, temperature and use of scrubbing liquid.
After washing the machining castings, blow them with hot, boring compressed air, and then perform rust prevention treatment. We are willing to work closely with you with “preferential prices, excellent quality, and excellent service”. We warmly welcome Chinese and foreign merchants to seek common development and create a win-win situation.