Wenderoth, Lind & Ponack, L.L.P.
Turbine rotor and manufacturing method of turbine rotor
A turbine rotor has suitable strength and toughness without causing soaring manufacturing costs and prolonged manufacturing time. The turbine rotor is constructed by welding a rotor member for high temperature made of high Cr steel to a rotor member for low temperature made of low Cr steel. The high temperature rotor member is formed from high Cr steel of which the nitrogen content is 0.02% or higher by mass %. A filler material welds the high temperature rotor member and the low temperature rotor member together, and is a 9% Cr-based filler material of which the nitrogen content is 0.025% or lower by mass %.
MITSUBISHI HITACHI POWER SYSTEMS, LTD.
B B C C C C B Y C C C F C C C
B23K B23K C22C C22C C21D C22C B23K Y10T C22C C22C C21D F01D C21D C21D C22C
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Kimmitsu Shin Yoshiaki Takashi Kenji Takashi
Maruyama Nishimoto Fukunaga Shige Kawasaki Nakano