MANUFACTURING METHOD OF ROTOR FOR STEAM TURBINE

PROBLEM TO BE SOLVED: To provide a manufacturing technique of a rotor for a steam turbine capable of improving hydrogen cracking resistance with respect to predetermined object portions out of the rotor for the steam turbine.SOLUTION: According to one embodiment, a manufacturing method of a rotor 10...

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Bibliographische Detailangaben
Hauptverfasser:	YAMADA MASAYUKI, YAN LIANG, MURAKAMI ITARU, ISHIBASHI NATSUKI, KANEKO JOJI, WADA KAZUHIRO, TANIGUCHI MASAHIRO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ALLOYS BLASTING CHEMISTRY ENGINE PLANTS IN GENERAL FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a manufacturing technique of a rotor for a steam turbine capable of improving hydrogen cracking resistance with respect to predetermined object portions out of the rotor for the steam turbine.SOLUTION: According to one embodiment, a manufacturing method of a rotor 10 constituting a steam turbine 1 has a step of reducing residual stress with respect to object portions 20 out of the rotor 10 in comparison with the other portions thereof. 【課題】蒸気タービン用ロータのうち、所定の対象部位については、耐水素割れ性を向上させることが可能な蒸気タービン用ロータの製造技術を提供する。【解決手段】実施形態によれば、蒸気タービン１を構成するロータ１０の製造方法であって、当該ロータ１０のうち対象部位２０については、その他の部位に比べて、残留応力を低減させる工程を有する。【選択図】図１