US2009257865A1PendingUtilityA1

Ni-base alloy for turbine rotor of steam turbine and turbine rotor of steam turbine

55
Assignee: TOSHIBA KKPriority: Mar 31, 2008Filed: Mar 2, 2009Published: Oct 15, 2009
Est. expiryMar 31, 2028(~1.7 yrs left)· nominal 20-yr term from priority
Inventors:Takahiro KuboKiyoshi ImaiMasayuki YamadaMasafumi Fukuda
C22C 19/055F01D 5/02F05C 2201/0466
55
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

An Ni-base alloy for a turbine rotor of a steam turbine contains in percent by weight C: 0.05 to 0.15, Cr: 22 to 28, Co: 10 to 22, Mo: 8 to 12, Al: 0.8 to less than 1.5, Ti: 0.1 to 0.6, B: 0.001 to 0.006, Re: 0.1 to 2.5, and the balance of Ni and unavoidable impurities.

Claims

exact text as granted — not AI-modified
1 . An Ni-base alloy for a turbine rotor of a steam turbine, the Ni-base alloy contains in percent by weight C: 0.05 to 0.15, Cr: 22 to 28, Co: 10 to 22, Mo: 8 to 12, Al: 0.8 to less than 1.5, Ti: 0.1 to 0.6, B: 0.001 to 0.006, Re: 0.1 to 2.5, and the balance of Ni and unavoidable impurities. 
   
   
       2 . The Ni-base alloy for a turbine rotor of a steam turbine according to  claim 1 ,
 wherein the unavoidable impurities are suppressed in percent by weight to Si: 1 or below and Mn: 1 or below.   
   
   
       3 . A turbine rotor configured to dispose through a steam turbine into which high-temperature steam is introduced,
 wherein at least a predetermined portion is formed of the Ni-base alloy for a turbine rotor of a steam turbine according to  claim 1 .   
   
   
       4 . A turbine rotor configured to dispose through a steam turbine into which high-temperature steam is introduced,
 wherein at least a predetermined portion is formed of the Ni-base alloy for a turbine rotor of a steam turbine according to  claim 2 .

Join the waitlist — get patent alerts

Track US2009257865A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.