Methods for joining dissimilar metal parts

Abstract

This invention relates to a method for joining dissimilar metal parts, comprising providing a first metal part and a second metal part, wherein the surfaces of the first metal part and the second metal part have been nano-treated; performing an injection molding process, which includes a mold assembly forming a cavity, placing the first metal part and the second metal part into the cavity, and maintaining a compression gap in the mold assembly as the compression stroke of the mold assembly, during which a plastic is injected into the cavity by embedding injection, i.e., filling the space between the first metal part and the second metal part; then applying a compressive force to the mold assembly, forcing the mold assembly to gradually close, and applying a uniform closing pressure to the plastic in the cavity, and completing the filling of the cavity by compression molding, so that the first metal part and the second metal part become a joined part; finally, opening the mold and removing the joined dissimilar metal parts.

Images