WELDING METHOD AND WELDING ROD OR WELDING WIRE

摘要

PROBLEM TO BE SOLVED: To provide a welding method with which in the case of welding an aluminum-boron alloy, the property of a base material at the welded part is not deteriorated. SOLUTION: In the welding portion of the aluminum-boron alloy-made late material 10, mixture 50 of KFB4as a boron crystallized material 20 with a binder such as high molecular material is coated so that this boron crystallized material 20 melts down into a welding pool 30 at the welding time. Arc is formed from a TIG welding torch, and when the aluminum-boron alloy at the welding part (the surrounding zone with A in the Figure 1) is melted, KFB4as the boron crystallized material 20 is diffused in the welding pool 30. Then, in the process in which the welded part is solidified, KFB4diffused in the welding pool 30 uniformly crystallizes AlB2in the welded part. COPYRIGHT: (C)2003,JPO