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针对奥氏体不锈钢外加纵向磁场的气体保护钨极电弧焊接（ＧＴＡＷ）时，与电极同轴的单个轴对称空心圆柱线圈在双向脉冲矩形励磁电流作用下产生的间歇交变纵向磁场，采用无暇点单积分磁场的数学模型，对＊ＴＡＷ焊接外加间歇交变纵向磁场进行了数值计算，该方法具有模型简单、计算速度快和精度高等优点并讨论了该间隙交变纵向磁场的分布、磁场的均匀性及其纵向分量与径向分量的比率等规律及其对焊接行为的影响，认为横磁分量将削弱ＧＴＡＷ外加纵向磁场的有利作用，影响磁控电弧的焊接质量.
For gas-shielded tungsten arc welding (GTAW) with austenitic stainless steel and longitudinal magnetic field, the intermittent alternating longitudinal magnetic field generated by the bidirectional rectangular pulse current excitation of a single axisymmetric hollow cylindrical coil coaxial with the electrode is adopted, The mathematical model of single integral magnetic field is used to numerically calculate the * TAW welding plus intermittent alternating longitudinal magnetic field. The method has the advantages of simple model, high computing speed and high precision, and discusses the distribution of alternating longitudinal magnetic field and uniform magnetic field The ratio of its longitudinal and radial components, and its influence on the welding behavior, it is considered that the transverse magnetic component will weaken the favorable effect of GTAW plus longitudinal magnetic field and affect the welding quality of the magnetron arc.