Hardfacing technique and improved construction for inlet...

Details Hardfacing technique and improved construction for inlet... Hardfacing technique and improved construction for inlet...

F - Mech Eng,Light,Heat,Weapons

01

D

170/61, 148/37.4

F01D 25/30 (2006.01) C21D 9/00 (2006.01) F01D 9/06 (2006.01)

Patent

CA 1283056

ABSTRACT An improved steam turbine system is provided having a hardfacing disposed on a portion of its steam inlet chamber wear surfaces. The invention also includes a novel stacked ring design having a hardfaced inlet sleeve and stationary, nitrided sealing rings for minimizing wear. Also included are novel heat treatments and metallurgical processes for stress relieving these hardfaced components. The techniques and designs employed, decrease steam leakage and assure longer service life for steam powered turbines.

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