Patent ID: 8425834
Filing Date: 2013-04-23
Classification: B22F,B23K,B32B,C22C,Y10T

Abstract:
1. A method for producing a clad material which comprises mixing at least two kinds of metal powder together to provide a required composition of brazing filler metal, and press-fixing the brazing filler metal constituted by the mixed powder to a metal material to form a brazing filler metal layer, said brazing filler metal constituting the brazing filler metal layer having the composition such that copper is added with at least phosphor to have a melting point lower than that of copper; wherein the mixed powder constituting said brazing filler metal is a mixture of at least copper powder with copper phosphorus alloy powder; and wherein the copper powder contained in the mixed powder of said copper powder with copper-phosphorus alloy powder is 12-40 in mass percentage.