600 MW机组高压联合汽门内壁裂纹修复处理  

Crack Repairs of Inner Wall of High-pressure Combined Steam Valve of a 600 MW Unit

作　　者：魏利辉 梁恩宝 张涛涛 朱平[2] 马延峰 王锋 WEI Lihui;LIANG Enbao;ZHANG Taotao;ZHU Ping;MA Yanfeng;WANG Feng(Shenhua Guohua Mengjin Power Generation Co.,Ltd.,Luoyang 471112;Suzhou Nuclear Power Research Institute Co.,Ltd.,Suzhou 215004)

机构地区：[1]神华国华孟津发电有限责任公司,河南洛阳471112 [2]苏州热工研究院有限公司,江苏苏州215004

出　　处：《电力安全技术》2022年第6期56-59,共4页Electric Safety Technology

摘　　要：针对某600 MW机组高压联合汽门内壁出现裂纹的问题,通过“机械打磨消缺+同材质焊接+局部焊后热处理”的方法,对其进行了现场焊接修复,既消除了设备的安全风险,又避免了更换新设备,可为大厚壁铸钢件超标缺陷的处理提供借鉴。In allusion to the problem of cracks in the inner wall of a high-pressure combined valve of a 600 MW unit,the on-site welding repairs are performed based on the method of"mechanical grinding to eliminate defects+welding of the same material+partial post-weld heating treatment",which not only eliminates the safety risks of the equipment,but also avoids the replacement of new equipment,and offers available reference for the treatment of large thick-walled steel castings exceeding the standard defects.

关 键 词：高压联合汽门 裂纹修复 热焊法修复 

分 类 号：TM621.3[电气工程—电力系统及自动化]