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简述了有害杂质磷在管道焊缝中的破坏机理。介绍了俄罗斯学者在双层药皮焊条中添加钡元素脱磷的试验过程以及焊缝添加钡元素后的脱磷效果,含钡的双层药皮焊条的优越性和最佳的钡含量。
Describes the destruction mechanism of harmful phosphorus in pipeline weld. This paper introduces the experiment of Russian detractors adding barium dephosphatation in double skin electrode and the effect of dephosphorization after adding barium in the weld. The superiority and the best barium content of barium - containing double skin electrode are introduced.