Dissimilar metal joint manufacturing method and dissimilar metal joint

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a dissimilar metal joint and a dissimilar metal joint capable of bonding dissimilar metals of aluminum or an aluminum alloy material and a steel material by an industrially simple method with excellent appearance and high bonding strength. provide. SOLUTION: A step of forming a film 41 by injecting a metal powder that can be bonded to a steel material 30 at a low temperature and at high speed onto at least a part of a surface 20c of an aluminum or an aluminum alloy material 20 and a film 41 and the steel material 30 face each other. It has a step of arranging the aluminum or aluminum alloy material 20 and the steel material 30 and a step of performing brazing using the brazing material 42 or welding using the welding material 40 between the film 41 and the steel material 30. .. [Selection diagram] Fig. 2