METHOD OF PERFORMING TORCH SOLDERING OF ALUMINUM MEMBERS WITH EACH OTHER, OR OF ALUMINUM MEMBER WITH COPPER MEMBER

摘要

PROBLEM TO BE SOLVED: To provide a joining method capable of performing joining of aluminum members with each other, or joining of an aluminum member with a copper member without injuring base material to be joined and capable of acquiring a strength larger than that of the conventional Sn-Pb solder joining and a joint part having preferable corrosion resistance.;SOLUTION: Torch soldering of aluminum members with each other or an aluminum member with a copper member is performed by using a solder which contains 1.9 to 3.5 mass% of Ni and the remainder of Sn and inevitable impurities, a solder which contains 0.9 to 2.5 mass% of Ni, 1.9 to 9.2 mass% of Cu and the remainder of Sn and inevitable impurities, or a solder which contains 0.9 to 2.5 mass% of Ni, 1.9 to 9.2 mass% of Cu, 4 mass% or less of Ge and the remainder of Sn and inevitable impurities, together with a noncorrosive flux. As the noncorrosive flux, a CsF-AlF₃ type flux can be used.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT