华能玉环电厂工程P92、P122钢现场焊接及热处理工艺

P92 and P122 Steel on-site Weld and Heat Treatment Technology in Huaneng Yuhuan Power Plant Project

文章介绍了超超临界机组采用SA335P92、SA335P122材质主蒸汽管道的焊接工艺及焊接过程中的控制要点,以及现场实施焊口局部热处理的经验及教训。提出了施工现场热处理设备配置和工艺选择的方案及改进措施。

This paper introduces the essences of welding technique and processes in ultra super -critical unit main steam pipe, which uses SA335P92 and SA335P122 steel, and the experiences and lessens learned from the on -site local heat treatment of welds. The schemes and improvement measures for construction site heat treatment device configuration and technology selection are presented.