TURBOMACHINE BLADE AND RELATIVE PRODUCTION METHOD

摘要

A turbomachine blade having a metal coupling root, and a metal airfoil-shaped oblong member cantilevered from the coupling root; the airfoil-shaped oblong member being divided into: a lower connecting fin cantilevered from and formed in one piece with the coupling root; an upper connecting fin cantilevered from a coupling head towards the coupling root and formed in one piece with the coupling head; and a main plate-like body which is shaped and positioned between the two connecting fins to form an extension of the fins, and is butt-welded to the same connecting fins to form one piece with the fins.

主权项

1. A turbomachine blade comprising:
a metal coupling root, and a metal airfoil-shaped oblong member cantilevered from the coupling root; the airfoil-shaped oblong member including at least a lower connecting fin cantilevered from and formed in one piece with the coupling root, and a main plate-like body which forms an extension of said lower connecting fin and is butt-welded to said lower connecting fin to form one piece with the same fin; wherein a lower edge of the main plate-like body and a ridge of the lower connecting fin are shaped to mate along strip-shaped first conjugate mating surfaces complementary to each other, and which extend from a leading edge to a trailing edge of the airfoil-shaped oblong member along a curved path in a laying plane/centerline plane of the airfoil-shaped oblong member.