| 摘要 |
A turbomachine blade (1, 20) of the type having a metal lower coupling root (2), a metal upper coupling head (5), and a metal airfoil-shaped oblong member (3) designed to connect the coupling root (2) rigidly to the coupling head (5); the airfoil-shaped oblong member (3) having a substantially airfoil-shaped main plate-like element (6) connected to the coupling root (2) and to the coupling head (5), and which is divided into : a lower connecting fin (9) cantilevered projecting from and formed in one piece with the coupling root (2); an upper connecting fin (10) cantilevered projecting from and formed in one piece with the coupling head (5); and a centre plate-like body (11), which is located between the lower (9) and upper (10) connecting fins, is shaped/designed to form an extension of the lower (9) and upper (10) connecting fins, and is butt-welded to, to form one piece with, the lower (9) and upper (10) connecting fins. |
