How to remove the corrosion of precision castings

Update:27 Jul 2019
Summary:

Corrosion is a chemical reaction that can be produced b […]

Corrosion is a chemical reaction that can be produced by precision casting products. For example, stainless steel pots used in daily life will also produce rust. Of course, the precision casting products are no exception. In the process, it will inevitably lead to rust, which not only affects the appearance, but also affects the use. Then the precision casting parts manufacturers find that the rust should be removed?

Ejection and derusting: the high-speed rotation of the impeller blades of the shot blasting machine is used to scatter the abrasive particles to the surface of the alloy steel castings, and the abrasives fly out at high speed to impact and rub the surface of the alloy casting steel parts, thereby removing the corrosion and oxidation of the surface of the alloy precision castings. Leather and so on. This method has high efficiency and good rust removal quality, and can also obtain a certain roughness on the surface of the alloy steel casting to facilitate the adhesion of the paint film. The labor intensity is low and the environment is lightly dyed. The precision casting manufacturers should give priority to this type. method.

Spray derusting: The abrasive is sprayed at high speed from the nozzle by compressed air treated by oil-water separation. The pressure of compressed air is generally 4-0.6MPa. Precision castings manufacturers use high-speed mushroom and pressure cast steel with pressure. When the parts are in contact, friction and impact are generated to remove scale and rust. This method does not need a fixed location, high efficiency, great flexibility of the spray point, no dead angle, good quality of the pound, and at the same time, the surface of the alloy steel casting has a certain roughness, so as to facilitate the adhesion of the paint film, generally should adopt this Ways.

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