摘要
SA-213T91钢吊挂管与06Cr25Ni20钢板焊接时,由于高合金异种钢成分和组织差异较大,存在焊接性差的问题。结合某600 MW超临界锅炉低压高温再热器入口管屏部件的焊接过程,通过创新焊接工艺,确保了焊接质量,避免了吊挂管的爆管现象,保障低压高温再热器安全运行。
When a SA-213T91 steel hanging tube is welded with a 06Cr25Ni20 steel plate,the weldability is not good due to the difference of composition and structure of high alloy dissimilar steel.Combined with the welding process of the inlet tube panel of a low-pressure and high-temperature reheater of a certain 600 MW supercritical boiler,the welding technology is innovated to ensure the welding quality,which avoids the tube explosion of the hanging tubes and ensures the safe operation of the low-pressure and high-temperature reheater.
作者
宁亮亮
NING Liangliang(Harbin Huade University,Harbin 150025,China)
出处
《国网技术学院学报》
2020年第3期44-47,共4页
Journal of State Grid Technology College
关键词
异种钢
吊挂管
焊接工艺
dissimilar steel
hanging tubes
welding technology
