More creep resistant turbine rotor, and procedures for...

Details More creep resistant turbine rotor, and procedures for... More creep resistant turbine rotor, and procedures for...

B - Operations, Transporting

23

K

26/150, 327/43,

B23K 9/04 (2006.01) B23K 9/23 (2006.01) B23K 35/24 (2006.01) B23K 35/30 (2006.01) B23P 6/00 (2006.01)

Patent

CA 1312926

- 19 - 53,834 ABSTRACT A more creep resistant turbine rotor and novel methods for repairing worn surfaces of Cr-Mo-V steam turbine components are disclosed. These methods include specified alloy compositions and welding procedures that minimize weld stresses and cracking. These alloys exhibit improved creep and fatigue properties and are preferably deposited using a gas tungsten arc welding procedure. Bead sequencing, cooling side plates and the use of run-off tabs are also disclosed for minimizing welding defects in turbine rotors and discs.

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