METHOD FOR PLANE BRAZING OF ALUMINUM ALLOY MEMBERS

摘要

The purpose of the present invention is to form a sound fillet on the periphery of surfaces to be brazed, when two aluminum alloy members are brazed to each other by plane brazing using a single-layer brazing sheet. When aluminum alloy members having a solidus temperature of 610ºC or higher are brazed to each other by plane brazing using a single-layer brazing sheet constituted of an Al-Si-Mg alloy brazing material, a flux is applied not to the surfaces of the aluminum alloy members which are to be brazed with the single-layer brazing sheet but to an area which lies in the surface of the aluminum alloy member that is the larger in terms of plan-view area and which is separated from the periphery of the surface to be brazed. The single-layer brazing sheet is sandwiched between the aluminum alloy members. The aluminum alloy members are brazed to each other in an inert-gas atmosphere while keeping the brazing sheet in areal contact with the aluminum alloy members and while keeping the stack at a given brazing temperature and applying an areal pressure thereto.