The paper deals with the influence of deoxidize content in covering on gas hole of surface welding and discusses the relationship between the gas hole and diffusion hydrogen.

• 研究了药皮组成中脱氧剂含量对堆焊焊条气孔的影响原因；讨论了焊缝中扩散氢含量与气孔间的关系.；研究表明:在同样条件下；随着脱氧剂含量的增加；酸性焊条气孔敏感性增大;