Method of producing an aluminum base part

摘要

An aluminum base part is composed of a forging cast product produced by a forging cast process and a nickel chromium plating layer formed on the forging cast product. The nickel chromium plating layer is composed of a semibright nickel plating layer formed on the forging cast product and having a thickness of 5 to 10 mum, a bright nickel plating layer 33 formed on the semibright nickel plating layer 31 and having a thickness of 5 to 10 mum, and a chromium plating layer 37 formed on the bright nickel plating layer 33 and having a thickness of 0.5 to 3 mum. The present invention adopts a forging cast product rather than a cast product. The forging cast product has a smooth surface, so that a plating layer can be directly formed on the surface of the forging cast product without forming an undercoat resin layer.