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1·The selections of repair welding technology are compared, and the repair welding technology using handwork gas tungsten arc welding is detailed. The result with good effect is got.

对补焊工艺方法的选择作了比较，具体阐明了采用手工钨极氩弧焊的补焊工艺方法，实践证明，效果良好。

2·By combining experiment with theoretical analysis, the influence of adding axial magnetic field on shape and properties of tungsten inert gas (TIG) welding arc and weld profile was studied.

采用实验与理论分析相结合的方法，研究了外加纵向磁场对TIG焊电弧形态、电弧静特性及焊缝形貌的影响。