阀体密封面镍基堆焊工艺  

SURFACING TECHNOLOGY OF Ni-ALLOY ON VALVE’S SEALING FACE

作　　者：林砺宗[1] 刘义崇[1] 刘晓垒[1] 张晓进[1] 

机构地区：[1]华东理工大学机械与动力工程系,上海市200237

出　　处：《焊接》2006年第4期29-32,共4页Welding & Joining

摘　　要：介绍了一种改善旋转止回阀密封面性能的镍基堆焊工艺。采用熔化极惰性气体保护堆焊方式,在阀体密封面上均匀地熔敷镍基合金的耐磨焊层,从而达到改善阀体密封面的表面质量,显著延长阀体寿命的目的。针对旋转止回阀密封面的三维曲面结构,设计了特殊的焊接工艺,并按照这种工艺思想设计制造了执行机构和控制系统,准确地完成了堆焊工艺过程,达到了项目的各项技术指标。Surfacing technology of Ni-alloy to improve the sealing face of valve was introduced. Using the MIG surfacing method, Ni-alloy was deposited evenly on the sealing face of valve to enhance the performance and prolong the life of the valve. Special welding technology was designed according to 3D structure of the sealing face. The automatic welding machine and control system were made to perform the complex surfacing technology, which met the need of the project.

关 键 词：密封面 镍基合金 堆焊 工艺 

分 类 号：TH134[机械工程—机械制造及自动化] TG454[金属学及工艺—焊接]