T91管屏埋弧焊裂纹分析及焊接试验  

Submerged-arc Welding Crack Analysis and Welding Test of T91 Tube Panel

作　　者：李杰[1] 赵伟珍[1] 

机构地区：[1]上海锅炉厂有限公司,上海200245

出　　处：《锅炉技术》2011年第2期47-49,共3页Boiler Technology

摘　　要：介绍了T91钢用于炉膛膜式管屏的埋弧焊焊接过程中出现的典型裂纹,综合各种因素对裂纹的形成原理进行了分析。通过试验证实对于拘束应力大的T91管屏,埋弧焊拼排可通过多层焊获得合格的T91管屏。按此工艺生产多台CFB锅炉T91管屏,投运锅炉运行情况良好。This paper introduces the typical crack in the process of T91 steel furnace mem- brane tube panel submerged arc welding,and analyses the formation theory by colligating all the factors. It is confirmed by test that for large restraint stress tube panel, submerged are welding can get eligible T91 tube panel through multi-layer welding. Several CFB boilers T91 panels have been manufactured according to the technics, and the running boilers all have a good performance.

关 键 词：T91钢 埋弧焊 裂纹 

分 类 号：TK142.1[动力工程及工程热物理—热能工程]