Process for preparing wear-resistant edges on turbine blades
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United States of America Patent
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Sep 12, 1995
Grant Date -
N/A
app pub date -
Mar 31, 1994
filing date -
Apr 2, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for preparing wear-resistant edges (3) on turbine blades, e.g., in the area of the upper leading edge of the blade and on the cover sheet, preferably for steam turbines made of chromium steels and/or titanium-based alloys includes preparing a recess (2) on the corresponding area of the blade (1), preferably by forging or machining, prior to the application of the edge protection (3), applying a powder layer in the corresponding area by low-pressure plasma spraying or according to the encapsulation technique, and subsequently compacting the powder layer by hot isostatic pressing (HIP), and the diffuse binding to the base material of the blade is thus achieved.
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