铈钨电极在GTAW／PAW不锈钢焊管生产中的应用研究

钨极的耐用性，即钨棒端部形态在电弧电极高温条件下保持稳定工作的时间长短，是直接影响不锈钢焊管焊缝质量及生产率的关键因素。针对国内焊接行业有关铈钨电极不适合大电流GTAW及PAW不锈钢焊管生产使用的观点，通过多年的试验研究及生产实践，并结合国外的相关理论研究成果，阐明了巾3．2～4．8mm大直径铈钨电极只要正确把握钨极端部刃磨要求及焊接电弧的参数条件，是完全能够满足在大电流GTAW及PAW不锈钢焊管生产中的使用要求的。

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.