Process for preparing wear-resistant edges on turbine blades

Details Process for preparing wear-resistant edges on turbine blades Process for preparing wear-resistant edges on turbine blades

1994-03-31

1995-09-12

Cuda, Irene

Metal working

Method of mechanical manufacture

Ball making

2988971, B23P 1500

Patent

active

054488281

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.

REFERENCES:
patent: 4155152 (1979-05-01), Crettella et al.
patent: 4611744 (1986-09-01), Fraser et al.
patent: 4822248 (1989-04-01), Wertz et al.
patent: 5048183 (1991-09-01), Cang et al.
patent: 5071054 (1991-12-01), Dzugan et al.
patent: 5156321 (1992-10-01), Liburdi et al.
patent: 5210946 (1993-05-01), Monroe
patent: 5348446 (1994-09-01), Lee et al.

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