What are the effects of low purity garnet on sandblasting?

If there are too many impurities, there will be abnormal color spots or spots on the abrasive jet surface, and the surface is not smooth;

The roughness of the abrasive sprayed surface will be uneven. If anti-corrosion coating is required in the later stage, the adhesion of the coating will be uneven, which will easily lead to coating falling off and accelerate the corrosion and oxidation of the product.

1. The content of garnet sand is too low, resulting in insufficient impact strength, the rust spots on the steel plate can not be removed, and the surface roughness of the steel plate after spraying and grinding can not meet the requirements.

2. The content of garnet sand is too low, the mud content is high, and there are also a lot of other impurities. After the steel plate is sprayed and milled, the powder and mud of impurities will adhere to the surface of the steel plate with impact, leaving color spots of different sizes on the surface of the steel plate, and the cleanliness of the spray grinding is poor.

The above two points will increase the process and cost of post-processing.