P92主蒸汽管对接焊缝裂纹和夹渣产生原因的探讨  

Detection and Study on Butt Weld Crack and Dregs of P92 Main Steam Piping

作　　者：苏德瑞[1] 马延会[1] 刘建屏[1] 赵国贵[1] 王春水[1] 郭德瑞[1] 尹建锋[1] 

机构地区：[1]国网冀北电力有限公司电力科学研究院(华北电力科学研究院有限责任公司),北京100045

出　　处：《华北电力技术》2016年第11期63-66,共4页North China Electric Power

摘　　要：P92新型马氏体耐热钢由于其良好的高温性能,在超超临界机组主蒸汽管道中得到大量应用。但P92钢焊接性较差,在焊接过程中极易产生裂纹和夹渣等缺陷。现结合监造过程中的实际案例,分别对焊缝中裂纹危害性缺陷和夹渣缺陷的产生原因进行了分析,并提出了相应的预防措施。The martensitic heat resisting steel P92 has been widely used as main steam piping in ultra supercritical u- nits because of the excellent high-temperature performance. However, cracks, slag inclusions and other defects can easily happen during the welding process due to the poor weldability of P92 steel. Based on the actual cases in super- vising, this paper focused on analyzing the causes of dangerous defects such as cracks and slag inclusions, and pro- posed relative preventive measures.

关 键 词：P92 焊接缺陷 预防措施 

分 类 号：TM621.72[电气工程—电力系统及自动化]