Optimized welding technique for NiMoV rotors for high temperatur

Details Optimized welding technique for NiMoV rotors for high temperatur Optimized welding technique for NiMoV rotors for high temperatur

1995-03-02

1997-01-07

Shaw, Clifford C.

Electric heating

Metal heating

By arc

2988921, 219 7612, B23K 904

Patent

active

055913636

ABSTRACT:
A process of depositing layers of weld metal onto a ferrous NiMoV low alloy steel turbine component. During a deposition of a first layer of weld metal, low levels of amperage are used to prevent a dramatic increase in a level of hardness of a heat affected zone produced during the deposition of the first layer of weld metal. During a deposition of a second layer of weld metal, higher levels of amperage are used to temper the heat affected zone but not high enough to overtemper the HAZ.

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Patents Abstracts Of Japan, vol. 10, No. 238 (M-508), Aug. 16, 1986 & JP-A-61 071186 (Ishikawajima Harima Harima Heavy Ind. Co. Ltd), Apr. 12, 1986.

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