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就柳州电厂２００ＭＷ１号炉高压再热器出口联箱在不太长的运行时间里２次产生穿透性裂纹的原因作了综合分析，得出失效原因主要是疲劳破坏所致。
In this paper, a comprehensive analysis was made of the causes of penetrating cracks twice during the running time of the high pressure reheater of Liuzhou Power Plant 200MW1 high pressure reheater, and the main cause of failure was fatigue failure.