Method in manufacturing blades or vanes of turbines
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United States of America Patent
Stats
-
Mar 19, 1991
Grant Date -
N/A
app pub date -
May 31, 1990
filing date -
Jun 1, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a method for manufacturing a blade or vane of a turbine. A master of the blade or the vane is made of steel, and silicon rubber is molded around said master. The mold thus obtained is cut open and removed from the master to be used for producing a model of wax or the like, a mixture of graphite powder and a cement then being molded around said model. The model is melted and removed from the graphite mold which is filled with a compacted powder of metal or metal alloy. The mold with the powder compacted therein is isostatically hot pressed and then the mold is removed from the produced molded body by blasting.
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