Turbomachinery blade with improved tip cap
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United States of America Patent
Stats
-
Jan 27, 1981
Issued Date -
N/A
app pub date -
Dec 22, 1978
filing date -
Dec 22, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A turbomachinery blade including a hollow interior is provided with an improved tip cap comprising first and second members each made of an alloy of a composition and properties different from the other. The first member, in the form of a closure plate bonded to sidewalls of the hollow body, is of a nickel-base or cobalt-base superalloy casting characterized by high mechanical strength properties at elevated temperatures. The second member is a rib of the shape of and bonded to the first member and is of a cast alloy characterized by the combination of resistance to oxidation, sulfidation and thermal fatigue at elevated temperatures. The second member provides an outer tip extension of the blade.
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