摘要
Abstract
For the sake of improving the project quality, curtailing the welding time and improving work efficiency, with the P91 material in field welding for main steam pipe of Chongxin Power Plant, uses different welding procedure and material. The welding procedure of Unit 1 makes welding understratum roentgenoseopy test according to relevant clauses of ＇DL/T 869---2004 Welding procedure specification for steam power plant＇, and the welding procedure of Unit 2 improves the welding test on the basis of the original regulation, the result shows that the welding joint quality of two kinds of welding procedure both pass the test, can guarantee the units safe, steady and long period operation.关键词
火力发电厂/P91钢/焊接工艺/主蒸汽管道Key words
steam power plant/P91 steel/welding technics/main steam pipe line分类
矿业与冶金
