采用药皮过渡铜的方法,研究了碱性焊条中铜的过渡规律及其对焊缝组织和显微硬度的影响。结果表明:铜的过渡系数为79%;焊缝组织主要由晶界铁素体、侧板条铁素体和针状铁素体组成;随着焊缝铜含量的增加,针状铁素体数量增加,焊缝显微硬度增大。 The transition of Cu in alkaline electrode and its effect on the microstructure and microhardness of the weld were studied by the method of coating transition copper. The results show that the transition coefficient of copper is 79%, and the microstructure of the weld consists mainly of grain boundary ferrite, side lath ferrite and acicular ferrite. With the increase of copper content in the weld, acicular ferrite Increasing the number of weld microhardness increases.