Affecting Factors Analysis of Low Temperature Impact Toughness of Welding Electrode E5018

In optmizing design and property tests of welding electrode E5018,influence of slag basicity,content of element Mn and Si as well as Mn/Si ratio in weld metal on low temperature impact toughness of the weld metal was investigated.The results indicate that when basicity is about 2.1,Mn content is 1.42%~1.48%,Si content is 0.38%~0.48% and Mn/Si>3.5,the low temperature impact toughness of the weld metal will be relatively high and stable.