| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a high energy beam welding method by which where the distribution of hardness in a weld zone can be controlled, and further, its toughness can be improved. <P>SOLUTION: The high energy beam welding method is provided with: a fitting step where a first filler metal containing as a main component a first element improving toughness is fitted to the part other than the side to be irradiated with a high energy beam 4 and the edge part on the side opposite thereto in the butting faces 1a of steel materials to be welded each other; a welding step where both the steel materials are butted in such a manner that the butting faces 1a are coincided to be fixed by tack welding, and are thereafter subjected to normal welding; and a partial penetration welding step where, for diluting the concentration of the first element in the weld zone formed by the normal welding, the peripheral part including the part on the side to be irradiated with the high energy beam 4 in the weld zone is subjected to partial penetration welding. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
