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大型鋼材の調質熱処理に及ぼす冷却条件の影響


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Title: 大型鋼材の調質熱処理に及ぼす冷却条件の影響
Other Titles: Effect of Heat Transfer Condition on the Tempering Operation of the Large Turbine Rotor
Authors: 真武, 友一 / 今井, 康文
Authors (alternative): Matake, Tomokazu / Imai, Yasufumi
Issue Date: Jul-1976
Publisher: 長崎大学工学部 / Faculty of Engineering, Nagasaki University
Citation: 長崎大学工学部研究報告, (7), pp.1-6; 1976
Abstract: Unsteady temperature field was analyzed numerically on the large turbine rotor which was in tempering operation without introducing temper brittleness. Several combinations of values of the heat transfer coefficients were examined to observe those effect on the entire cooling rate and to obtain the most appropriate combination. Heat transfer from the outer surface of the rotor was dominant and almost controlled the entire cooling rate, even on the bore surface. The temperature of the bore surface remained still high in the temper brittleness region after the temperature of the outer surface cooled down far below that region. Hence,it was concluded that the test specimens which are cut out near the outer surface might mislead the stre㎎th evaluation unless the special care is made.
URI: http://hdl.handle.net/10069/23850
ISSN: 02860902
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:No.7

Citable URI : http://hdl.handle.net/10069/23850

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