发明名称 |
METHOD FOR MANUFACTURING A STEAM TURBINE ROTOR, AND STEAM TURBINE ROTOR |
摘要 |
A method of manufacturing a steam turbine rotor which includes an ultra-high temperature side portion in which ultra-high temperature steam flows and a high temperature side portion in which high temperature steam flows, the manufacturing method including the steps of: preparing a first electrode having a chemical composition corresponding to a chemical composition of a heat resistant alloy making up the ultra-high temperature side portion and a second electrode having a chemical composition corresponding to a chemical composition of the high temperature side portion; tentatively joining together joints of the electrodes, with the joints of the electrodes made smaller in cross sectional area than other electrode portions; subjecting the tentatively joined first and second electrodes to an ESR process to obtain an ESR ingot and forging the ingot into a shape of a rotor to obtain a rotor forging; and heat-treating the rotor forging to obtain a rotor blank and manufacturing the steam turbine rotor from the rotor blank. |
申请公布号 |
EP2345792(A4) |
申请公布日期 |
2012.03.28 |
申请号 |
EP20090824723 |
申请日期 |
2009.10.27 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
YAMADA, MASAYUKI;INUKAI, TAKAO;IMAI, KIYOSHI;MIYASHITA, SHIGEKAZU;NEMOTO, KUNIYOSHI;TAKAKU, REKI |
分类号 |
F01D5/06;C22B9/18 |
主分类号 |
F01D5/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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