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通过优化熔敷金属化学成分 ,促使熔敷金属形成针状铁素体 (AF)组织 ,提高了熔敷金属的低温冲击韧性 ,研制出具有国内先进水平的THJ5 0 7R高韧性焊条
By optimizing the chemical composition of the deposited metal to promote the formation of acicular ferrite (AF) microstructure and improve the low temperature impact toughness of the deposited metal, the THJ5 0 7R high toughness electrode