Abrasive blasting is used heavily in the steel fabrication industry for removing milscale prior to fabrication, as it makes welding cleaner and easier. We also abrasive blast to clean the steel surface after fabrication to allow for weld inspection, as well as rust oil and milscale removal.
Corrosion is defined as "the degradation of materials by chemical reaction with the environment in which the material resides." this is because of metal oxidation. As metals have a tendency to return to their natural state, it is a natural process which produces either salt or oxides. It requires four elements - anode, cathode, an electrolyte, and a metallic path. Ultimately we are preparing the surface to ensure we have proper adherence of the coating system which is to protect the structure from Corrosion