阀门密封面钴基合金堆焊工艺

Overlaying Welding Process Rsearch for Cobalt Base Alloy on Valve Sealing Face

介绍了阀门密封面常用材料堆焊钴基合金(焊丝)的化学成分、牌号类别和熔敷金属层常有的缺陷。论述了手工钨极氩弧焊(GTAW)的工艺验证方法。总结DN300奥氏体不锈钢三偏心蝶阀密封面堆焊钴基合金的质量控制。

This article introduces the chemical composition, trademark category of overlaying welding cobalt base alloy used on the valve sealing face in the field of petrifaction and firepower, the defect of cobalt base alloy deposited metal layer. Validate the technics of manual tungsten electrode argon arc welding （GTAW） overlaying welding cobalt base alloy on the three eccentric butterfly valve of DN300 austenitic stainless steel. And describes the quality control in the process of overlaying welding.