T91 小径管焊接热循环的启示  

Welding Special Column Enlightenment From Welding Heat Cycle of T91 Small Diameter Tubes

作　　者：孙裕昌[1] 王庆[1] 李中伟[1] 

机构地区：[1]河北省电力试验研究所

出　　处：《河北电力技术》1998年第1期38-41,共4页Hebei Electric Power

摘　　要：本文介绍了手工钨极氩弧焊接Ｔ９１小径管时在ＨＡＺ区域中实测的热循环结果，其ｔ８／５值与焊接热模机拟定的ｔ８／５有较大的差别。提出了焊接Ｔ９１小径管可以免去焊前预热的看法。The real measurement of heat cycle in the HAZ area during applying manual tungsten argon arc welding to T91 small diameter tubes is reported in this paper. The measured t 8/5 value is quite different from that given by heat simulation machine. The authors suppose that the pre weld heating can be omitted for applying welding to T91 small diameter tubes.

关 键 词：T91 焊接热循环 焊接预热 

分 类 号：TG402[金属学及工艺—焊接]