Abstract: A joining method for connecting heterogeneous metal parts includes the steps of: prefabricating a first connecting surface on a first metal part, and a second connecting surface on a second metal part; disposing at least one barrier layer on one of the first and second connecting surfaces of the first and second metal parts by a plating process; disposing a filler metal between the first and second connecting surfaces of the first and second metal parts such that the filler metal being sandwiched in-between the first and second metal parts; heating the filler metal disposed between the first and second connecting surfaces of the first and second metal parts; and cooling and solidifying of the molten filler metal connected between the first and second connecting surfaces of the first and second metal parts to constitute a golf club head.

Abstract: Using infrared rays for quick joining a golf club head adopts a heating source of infrared rays, which are used to melt metallic fillers disposed between a main head body and a striking plate. Thus, the striking plate is bonded to the main head body to constitute the golf club head.