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In the Arc Spray Process, a pair of electrically conductive wires is melted by means of an electric arc. The molten material is atomized by compressed air and propelled towards the substrate surface. The impacting molten particles on the substrate rapidly solidify to form a coating. This arc spray process carried out correctly is called a " cold process" ( relative to the substrate material being coated) as the substrate temperature can be kept low during processing avoiding damage, metallurgical changes and distortion to the substrate material Electric arc spray coatings are normally denser and stronger than their equivalent combustion spray coatings.
The arc spray process is used in multiple industries for many demanding applications including some in the aerospace industry. Arc Spray coatings are becoming more and more accepted in applications around the world. For coatings ranging from simple dimensional restoration, to engineered solutions for complex surface treatment requirements, arc spray provides competitive, high quality answers to problems.