Plastic media blasting

Mechanical stripping methods entail the use of plastic media blasting. This media can be sand, water, CO2 pellets, glass bead, steel shot, plastic media, slag, oxides, garnet, etc. As the name implies, these media are “shot” at the coated surface, removing the coating via abrasion. Choosing the right media will affect both the speed of coating removal and the profile left on the part’s surface. The most aggressive blast media will remove the coating the fastest but can leave the roughest profile on the metal’s surface. This is not normally a problem when this method is used to clean racks and hangers but can be detrimental to the surface of a repaired part. There are more gentle blasting media, like plastic media, that can strip the coating and leave the product surface with a smooth profile. But, cleaning time with these materials can be a bit longer. Sometimes this method is used in conjunction with other stripping methods, such as removing the ash left on a product that was thermally cleaned. Mechanical cleaning systems can be automated or batch operations.

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