Method of manufacturing steam turbine rotor and steam turbine rotor

    公开(公告)号:US09856735B2

    公开(公告)日:2018-01-02

    申请号:US13127517

    申请日:2009-10-27

    IPC分类号: F01D5/06

    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.

    METHOD OF MANUFACTURING STEAM TURBINE ROTOR AND STEAM TURBINE ROTOR
    9.
    发明申请
    METHOD OF MANUFACTURING STEAM TURBINE ROTOR AND STEAM TURBINE ROTOR 有权
    制造蒸汽涡轮转子和蒸汽轮机转子的方法

    公开(公告)号:US20110229339A1

    公开(公告)日:2011-09-22

    申请号:US13127517

    申请日:2009-10-27

    IPC分类号: F01D5/02 B21D53/00

    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.

    摘要翻译: 一种蒸汽轮机转子的制造方法,其包括超高温蒸汽流过的超高温侧部分和高温蒸汽流过的高温侧部分,所述制造方法包括以下步骤:制备第一电极 具有对应于构成超高温侧部的耐热合金的化学成分的化学成分和具有与高温侧部的化学成分相当的化学成分的第二电极; 暂时将电极的接头连接在一起,电极的接头的横截面积比其他电极部分小; 对暂时接合的第一和第二电极进行ESR处理以获得ESR锭,并将铸锭锻造成转子的形状以获得转子锻造; 并对转子锻造进行热处理以获得转子坯料,并从转子坯件制造汽轮机转子。