Patent ID: 8058584
Filing Date: 2011-11-15
Classification: B23K,Y10T

Abstract:
1. A method of bonding dissimilar materials made from metals, the method comprising: layering a plurality of plate materials, wherein at least two of the plurality of plate materials are a first metallic material and at least one of the plurality of plate materials is a second metallic material having a melting point lower than the first metallic material, to form a dissimilar material interface and a same material interface; forming a layered seam by a resistance welding operation in which a contact resistance of the dissimilar material interface is lower than a contact resistance of the same material interface, wherein the resistance welding operation comprises: conducting a first current across at least three layers of the plurality of plate materials after layering to form a nugget in the same material interface; and conducting a second current greater than the first current across the at least three layers of the plurality of plate materials to form a nugget in the dissimilar material interface.