Patent ID: 6935405

Claim:
A sink compound laminate molding process, which comprises the steps of: a) preparing a sheet copper material having a thickness between 0.1 mm and 8.0 mm; b) placing the copper sheet material in a molding cavity and positioning a bottom of the copper sheet material against a bottom of the molding cavity; c) heating the copper sheet material to a temperature between 360° C. and 650° C. and performing one of injecting an inert gas into the molding cavity and maintaining a vacuum in the molding cavity to prevent oxidization from taking place on the surface of the copper material; d) pouring a molten aluminum material over the sheet copper material in the molding cavity using a gravity casting process to create a diffusion bonding to an interface between both of the copper and aluminum materials; and e) cooling and curing the aluminum material forming a structure of a compound laminate of an integrated heterogeneous alloy of copper and aluminum, wherein crystals are present in the interface between the copper and the aluminum materials.