MOVING BLADE OF AXIAL FLOW TURBO MACHINE

摘要

PROBLEM TO BE SOLVED: To reduce a weight of a shroud cover at a blade tip part of a turbine moving blade, and restrain deterioration of strength due to a light weight of the cover.SOLUTION: A moving blade of an axial flow turbo machine comprises: a vane 1 formed of a metallic base material and having a twisted part; and a shroud cover 2 integrally formed of the same metallic base material as that of the vane at a tip of the vane, and having contact parts for contacting shroud covers of adjacent moving blades by a centrifugal force during rotation at both circumferential ends. One part of each of the vane and the shroud cover is adhered, jointed and formed by a non-metallic high tensile sheet 11 with a smaller specific gravity than that of the metallic base material. A vane-shape formation member 14 is provided on the high tensile sheet of the vane, so as to form a vane shape.