Patent ID: 9643283
Date: 2017-05-09
CPC Classifications: B23K,B32B,C22C,F28F,Y10T

Claim:
1. An aluminum alloy brazing sheet for brazing aluminum in an inert gas atmosphere without using flux, the brazing sheet comprising a core material formed of aluminum or an aluminum alloy, a filler metal, and an intermediate material, one side or each side of the core material being clad with the filler metal through the intermediate material, the filler metal including 6 to 13 mass % of Si and 0.004 to 0.1 mass % of Li, with the balance being aluminum and unavoidable impurities, the intermediate material being formed of an aluminum alloy that consists of 0.2 to 1.3 mass % of Mg and, optionally, at least one element selected from the group consisting of 0.5 to 1.8 mass % of Mn, no more than 1.0 mass % of Si, no more than 1.0 mass % of Fe, no more than 0.5 mass % of Cu, no more than 0.5 mass % of Zn, no more than 0.2 mass % of Ti and no more than 0.5 mass % of Zr, with the balance being aluminum and unavoidable impurities, a surface oxide film having been removed from the brazing sheet, and an oil solution that decomposes when heated at 380° C. or less in an inert gas having been applied to the brazing sheet.