汽轮机阀座堆焊开裂原因分析与对策  

Reason Analysis and Resolve Measures for Built-up Welding Crack of Steam Turbine Valve Seat

作　　者：刘双明[1] 裴玉冰[1] 肖杰[1] 

机构地区：[1]东方汽轮机有限公司制造技术处,四川618000

出　　处：《大型铸锻件》2012年第4期27-30,共4页Heavy Casting and Forging

摘　　要：汽轮机阀座由于长期承受苛刻的工作环境,接触密封面常采用堆焊硬质合金司太立6的方式以增强阀座密封面耐磨性和密封效果。本文就典型的20Cr1Mo1V材料阀座司太立合金堆焊面开裂原因进行分析,提出了司太立合金堆焊质量的控制措施。Since steam turbine valve seats should withstand harsh working environments for long time, the contact sealing surfaces should be performed build-up welding with hard alloy Stellite No. 6 in order to enhance wear resistance and sealing effect of valve seat. In this article the reasons of build-up welding surface cracks are analyzed in valve seats made of 20Crl Mol V material, and welding quality control measures are proposed.

关 键 词：司太立合金 阀座 堆焊 裂纹 对策 

分 类 号：TG441.7[金属学及工艺—焊接]