P91钢焊缝缺陷检测及原因探讨  

Detection and Study on Welded Seam Defects of P91 Steel

作　　者：宿修平[1] 苏德瑞[1] 

机构地区：[1]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》2006年第7期44-47,共4页North China Electric Power

摘　　要：P 91钢材的可焊性相对较差,若焊接工艺控制不严,易产生裂纹、未熔等危害性缺陷;超声波在P 91钢中的声速也与普通的碳钢声速有所不同,对于P 91钢焊缝的检测应注意缺陷的定位。The fabrication weldability of P91 Steel is relatively poor. If weld process control is not strict,the work pieces are prone to crack or to produce unmelted defects, and the ultrasonic speed in P91 steel is different from that in general steel too. Therefore,the location of defects must be noticed in the examination of welded seam of p91 steel.

关 键 词：P91钢 声速 焊接 缺陷 

分 类 号：TG441.7[金属学及工艺—焊接]