METHOD FOR JOINING ALUMINUM ALLOY MATERIAL FOR VEHICLE BODY FRAME AND ALUMINUM ALLOY-MADE VEHICLE BODY FRAME

摘要

PROBLEM TO BE SOLVED: To provide a method for joining an aluminum alloy material for vehicle body frame and an aluminum alloy-made vehicle body frame with which deformation, in case of welding members constituted of the vehicle body frame, can be reduced. ;SOLUTION: Side members 1, 2 and cross members 3, 4, are disposed at a prescribed position in a surface plate 10 as a reference surface and restricted by clamping. At this time, each end surface of the cross members 3, 4 is abutted on each side surface 1a in the inner sides of the side members 1, 2. Thereafter, to the abutted parts of the side surface 1a of the side member 1 and both side surfaces of the cross member 3, a fillet welding is performed with the vertical down welding, e.g. an arc welding method. That is, the fillet welding is performed so as to direct the direction toward the surface plate 10 as a processing direction. At this time, the fillet welding is previously performed to the side surface 3b parted from the cross member 4 in e.g. two side surfaces of the cross member 3, and successively, the fillet welding is performed to the other side surface 3c. To any side surface, the processing direction of the welding is the direction toward the surface plate 10.;COPYRIGHT: (C)2003,JPO