| 摘要 |
PROBLEM TO BE SOLVED: To provide a different thick blank for improving press moldability and reliability in mass production, and a manufacturing method thereof. SOLUTION: Two corner parts forming the ends of one long side of a reinforcing plate 12 are disposed on two corner parts forming the ends of one long side of a main plate 11, the respective corner parts of reinforcing plates 13 and 14 are disposed on the remaining two corner parts of the main plate 11, and the reinforcing plates 12 to 14 are stacked on the main plate 11. Adhesive (not shown) made of nylon epoxy resin, etc., is preferably applied between the reinforcing plates 12 to 14 and the main plate 11. A plurality of joined parts 15 are formed by joining the reinforcing plates 12 to 14 with the main plate 11 at a plurality of parts by the friction stirring welding(FSW). As a result, the main plate 11 is integrated with the reinforcing plates 12 to 14 to form a different thick blank 1. |
