|关键词: 高压导汽管 异种钢焊接 焊接工艺 无损检测
|Welding process of dissimilar steel for steam pipe of thermal power plant between the elbow flange and the inner casing
|The welding of dissimilar steel between the ZG15Cr2Mo1 elbow flange and the 1Cr11MoV inner casing of steam pipe in a thermal power plant was conducted. Welding techniques including the welding preparation for flange replacement, welding technology and inspection were introduced. The results show that there are no abnormality in the inspection of the new weld of the elbow flange, and the welding process can ensure the safe operation of the high-pressure steam pipe after welding.
|Key words: high pressure steam pipe dissimilar steel welding welding process non-destructive testing