MANUFACTURING METHOD OF LARGE-SIZE RIBS OF IMPELLER Russian patent published in 2011 - IPC F16H37/06 

FIELD: power industry.

SUBSTANCE: ribs are laminated and consist of several layers; for that purpose, at the stage of mould loft the surface area of rib for each layer is divided into segments of various surface area so that joints of segments of contact layers are offset overlapped in horizontal and vertical planes. At that, sizes of segments are appointed based on manufacturing dimensions of moulds for moulding equipment; rib is assembled on layout table in continuous parts in which each layer is assembled of its segments; then, assembly is subject to vertical pressure and all layers are welded by means of resistance welding; after that, rib is moved on layout table and the next part is assembled.

EFFECT: development of method of industrial manufacture of large-size ribs of impeller.

3 dwg