spark roughening method and artificial roughening method

       The spark roughening method is to use nickel wire (plate) or aluminum wire as an electrode after the surface of the substrate is degreasing and rust treatment, and contact the surface of another electrode substrate to generate an arc, so that the nickel or aluminum is melted and adhered to the steel or product. Through continuous contact, a rough nickel or aluminum thin welding layer is formed on the surface of the substrate to achieve the purpose of roughening the surface of the substrate.



EDM roughening is a manual operation with low production efficiency, but the equipment is simple and easy to use. It is especially suitable for macro roughening of sandblasting roughening, hardened surfaces or local parts that are not allowed or impossible.

        The artificial roughening method is that the surface of the workpiece is treated by sandblasting. When the roughness does not meet the coating requirements, the surface of the sprayed substrate needs to be artificially roughened, including grooves, holes and buried screws on the surface to facilitate Increase the meshing ability of the coating and disperse the internal stress of the coating.