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Sand blasting process pre-treatment stage refers to the workpiece before being sprayed, spray protective layer before the workpiece surface should be carried out.
Sand blasting process before and after treatment of good quality, affecting the coating adhesion, appearance, coating resistance to moisture and corrosion and so on. Poor pre-treatment work, corrosion will continue to spread under the coating, the coating into pieces off. After careful cleaning of the surface and the general simple cleaning of the workpiece, compared with the sun exposure coating, the life can be a 4-5 times difference. There are many ways of surface cleaning, but the most commonly accepted methods are: solvent cleaning, pickling, hand tools, power tools.