White aluminum oxide blasting media

White aluminum oxide blasting media is an excellent medium for finishing and pre-treatment before coating. Sometimes th What is the reason for this and how to avoid it?
In the anti-corrosion and spraying industry, the surface treatment of stainless steel is very important. After sandblasting, the surface of stainless steel will form uneven micromorphology. A certain roughness will help to increase the holding force of the coating and enhance the anti-corrosion performance. Generally, after derusting and sandblasting with white aluminum oxide, coating shall be conducted before the surface is not polluted within 4 hours. If rust spots appear after sandblasting, it may be caused by too high environmental humidity. The white fused aluminum oxide sandblasting media itself does not contain water. Meanwhile, the content of Fe2O3 does not exceed 0.1%. When sandblasting is carried out in a dry environment, the metal will not be affected by water and produce rust spots. Therefore, when the ambient humidity reaches 85%, sandblasting should be stopped.