【摘要】 采用 2 0t电弧炉 LF VOD精炼工艺试制的两种超低碳焊条用钢成分分别为 (% ) :0 .0 1C 1.5 5Mn 0 .0 8Si 2 .5 0Ni 0 .2 9Mo 0 .12Ti和 0 .0 1C 1.5 0Mn 0 .4 9Si 2 .4 3Ni 0 .2 4Mo 0 .11Ti。电弧炉兑 5 0 %铁水 ,以便控制钢中的有害微量元素。VOD精炼过程造含SiO2 ～ 2 3%、CaO～ 2 9%的熔渣 ,可有效控制钢中的气体和硅铝含量。更多还原

【Abstract】 Two kinds of extra-low carbon welding rod steel - 0.01C-1.55Mn-0.08Si-2.50Ni-0.29Mo-0.12Ti and 0.01C-1.50Mn-0.49Si-2.43Ni-0.24Mo-0.11Ti were produced by 20 t arc furnace-LF-VOD process. The hot metal charge ratio was up to 50% in arc furnace in order to control the residual deleterious elements content in steel and during VOD refining process to use flux containing ～23% SiO\-2 and ～29% CaO was available to effectively control silicon, aluminium and gas content in steel.更多还原