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本文对低循环疲劳中的工程无裂纹寿命N_o进行了探讨。通过对国产汽轮机转子钢30Cr2MoV和西德生产的电站锅炉汽包用钢BHW35及19Mn5的低循环疲劳试验,用不同的方法确定N_o,提出了一个估算低循环疲劳工程无裂纹寿命N_o的经验关系式。
In this paper, the fatigue life of low cycle fatigue-free engineering N_o was discussed. Through the low cycle fatigue test of the domestic steam turbine rotor steel 30Cr2MoV and the boiler drum steel BHW35 and 19Mn5 produced by West Germany, the N_o is determined by different methods and an empirical relationship of estimating the crack-free life N_o of low cycle fatigue engineering .