| 摘要 |
PURPOSE:To eliminate electrode potential difference between fluid passage constituting members and fin members and thereby solve the problem of contact corrosion of the members, by a method wherein fluid passage constituting members such as plates or pipes and fin members constituting cooling fins are brazed to each other by using aluminum alloy brazing sheets for both of them. CONSTITUTION:The fluid passage constituting members 11 and the fin members 12a, 12b constituting the cooling fins are brazed to each other by using the aluminum alloy brazing sheets for both of them. Both of the brazing sheets used for the fluid passage constituting members and the fin members comprise, for example, a core member consisting of alloy A3003, alloy A3004, alloy A3005, alloy A3105, alloy A6915 or the like and a skin member consisting of an Al-Si alloy, an Al-Si-Bi alloy, an Al-Si-Mg alloy, an Al-Si-Mg-Bi alloy or the like. |
