超超临界机组高中压缸汽封体裂纹焊接修复研究  

Study on Crack Welding Repair of Gland Casing of High Pressure and Medium Pressure Cylinder Used for Ultra Supercritical Unit

作　　者：匡清华[1] 毛桂军 赵鹏飞[1] 

机构地区：[1]东方汽轮机有限公司,四川618000

出　　处：《大型铸锻件》2017年第1期42-44,47,共4页Heavy Casting and Forging

摘　　要：分析了汽封体裂纹形貌,论述了返修可行性,焊接工艺方案以及实施过程关键控制要点。汽封体返修一次合格,运行效果较好,验证了修复工艺方案的合理性。The appearance of crack of gland casing has been analzyed. Meanwhile, the feasibility of repair, the welding process and the key controlling points during the opeartion have been discussed as well. The one-time repaired gland casing is qualified with good operation effect, which has verified the rationality of welding repair process.

关 键 词：汽封体 裂纹 焊接工艺 

分 类 号：TG44[金属学及工艺—焊接]