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Wet blaster nozzle diagram9/1/2023 In this method, dry abrasive is propelled against the surface to be cleaned so that rust, contaminates, and old paint are removed by the impact of the abrasive particles. The degree of cleanliness obtained in abrasive blasting depends on the type of abrasive, the force with which the abrasive particles hits the surface, and the dwell time. If the surface to be abrasive blasted is painted with leaded paint, additional controls must be employed to minimize hazards to workers and the surrounding environment. High-velocity abrasive particles driven by air, water, or centrifugal force impact the surface to remove rust, mill scale, and old paint from the surfaces.Ībrasive cleaning does not remove oil or grease. It may also be used with care to prepare concrete and masonry surfaces and to clean and roughen existing coatings for painting.Ībrasive techniques used for painting surface preparation are discussed. Air (Conventional) Abrasive BlastingĪbrasive blasting is mostly related to cleaning painted and unpainted steel.
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