TURBINE BLADE AND PROCEDURE FOR ITS MANUFACTURE Russian patent published in 2015 - IPC F01D5/22 

FIELD: machine building.

SUBSTANCE: turbine blade contains a vertex section with a shroud and, at least, one rim facing radially from the shroud. The edge has the first and second side walls spaced apart with reference to each other and joined with the shroud, and also a cutting edge, joined with the first and second side walls, forming a cavity between the side walls, the shroud and the cutting edge. The cutting edge is arranged with reference to the first and second side walls in a radial direction. The width of the first side wall and second side wall is constant in a radial direction, at least, up to 50% of height of the named side walls. The fabrication of the named turbine blade includes the one-piece-casting of the blade with hollow rim with the first and second side walls and the cutting edge, or the named blade is stamped and the edge is machine processed for formation of the first and second side walls, cutting edge and cavity between them.

EFFECT: invention allows to decrease a mass of a turbine blade without worsening its durability and reliability.

10 cl, 11 dwg