Shot Blast Machine is commonly used for workpiece surface cleaning, such as the removal of sand cast surface and high carbon layer, as well as welding parts of the weld, to eliminate rust and oxide scale. The Shot Blast Machine is one of the best surface pretreatment methods for rust removal. It can not only completely remove the oxide scale, rust, old paint film, oil stain, and other impurities on the metal surface, make the metal surface show the same original color, but also make the metal surface obtain a certain degree of roughness, in order to obtain uniform roughness of the surface, and the machining stress into pressure, improve the adhesion between the anti-corrosion layer and the base metal and the metal's own corrosion resistance.

Shot Blast Machine uses a Compressed air gun to spray sand of a certain size onto the rusted surface of a part. It not only removes rust quickly but also prepares the surface for painting, spraying, and electroplating, the surface treated by sandblasting can meet the requirements of clean and certain roughness, so as to improve the adhesion between the covering layer and the parts.

The common methods of rust removal from Shot Blast Machine are dry sandblasting, wet sandblasting, dust-free sandblasting, and high-pressure water sandblasting. Dry sandblasting dust is harmful to the environment and health, while a wet process without dust, but moisture will make the surface rust again. The method of prevention is in the water to add 1% ~ 15% of the rust inhibitor and emulsifier or soap water so that the surface in a short period of time no longer rusts, and then coating maintenance primer. Dust-free sandblasting is the addition of sand, sandblasting, and sand recovery in a closed system for the continuous cycle, so as to avoid dust flying. High-pressure water sandblasting is mainly used for large-scale rust removal, such as hull, oil tanks, oil tanks, boilers, etc...