基于蠕变损伤开裂和扩展的高压导汽管寿命评估  

Life Evaluation of High Pressure Pipe Based on Creep Damage Cracking and Extension

作　　者：马东方[1] 蔡红生[1] 耿进锋[1] 赵永峰[1] 魏泉泉 

机构地区：[1]国网河南省电力公司电力科学研究院,河南郑州450052 [2]河南恩湃高科集团有限公司,河南郑州450052

出　　处：《热加工工艺》2016年第22期112-115,共4页Hot Working Technology

摘　　要：对某电厂高压导汽管低硬度区管段进行了常规试验,通过常规试验数据对其进行蠕变损伤开裂分析和扩展寿命评估。结果表明,在常规力学性能低于标准要求时,温度降低至540℃的情况下,该高压导汽管的蠕变损伤开裂寿命约为5914 h。The routine test of low hardness zone of high pressure pipe of a power plant was conducted. The creep damage cracking analysis and extended life assessment of the creep damage were carded out by conventional test data. The results show that when the regular mechanical properties are below the standard, and the temperature drops to 540 ℃, the creep damage cracking life of the high pressure pipe is about 5914 h.

关 键 词：P91 低硬度区 蠕变损伤 寿命评估 

分 类 号：TK225[动力工程及工程热物理—动力机械及工程] TG113.255[金属学及工艺—物理冶金]