Research on Application of Ce-W Electrode to Manufacture of GTAW/PAW Stainless Steel Weld Pipe

Durability of the tungsten electrode（i.e.,how long the tungsten electrode tip remains its profile and operates consistently under the high temperature condition of the arc electrode） is a critical element directly related to the seam quality and productivity of stainless steel weld pipes.Addressing the point of view holding in the domestic welding industrial circles that the Ce-W electrode is not suitable for the high-current consuming production of GTAW and PAW stainless steel weld pipes,on the basis of the result of their years-long experimen-tal research and operational practice and relevant theoretic research achievements as made both at home and abroad,the co-authors expound that provided that the cutting-grinding requirement for the tungsten electrode tip and the parameters as required for the welding electric arc are satisfied,the Φ3.2~4.8 mm large-sized Ce-W electrode will be able to completely meet the applicable requirements for the high-current consuming production of GTAW and PAW weld pipes.