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研究了电磁搅拌对管线钢埋弧焊熔敷金属低温韧性的影响，结果表明：电磁搅拌使０．２－０．６ μｍ的夹杂物数量增加，促进了奥氏体晶粒内针状铁素体的生成和细化，使晶内铁素体含量由８５．１％提高到９１．７％；抑制了晶界铁素体和侧板条铁素体的形成，使熔敷金属的低温冲击韧性明显提高。
The effect of electromagnetic stirring on the low temperature toughness of submerged arc welding deposited metal in pipeline steel was studied. The results show that the electromagnetic stirring increases the number of inclusions 0.2-0.6 μm and promotes the intragranular acicular ferrite Body formation and refinement, the intragranular ferrite content increased from 85.1% to 91.7%; inhibited the formation of grain boundary ferrite and side lamellar ferrite, the low temperature impact of the deposited metal Toughness improved significantly.