| 摘要 |
PROBLEM TO BE SOLVED: To provide a welding structure whose increase in weight by making the structure large is suppressed and its wall plates are not made to be thick and a large-sized vacuum container having a high degree of vacuum, to which the structure is applied. SOLUTION: The welding structure is characterized in that the structure has construction supporting an inside member 1 made of aluminum or an aluminum alloy by an outside member 3 having strength stronger than the inside member, the above inside member is welded 2 by friction-stir-welding and is metallurgically or mechanically welded to the above outside member. |
