Abstract: Loss   of  [Als] and [Si]   and   change   of   inclusions   in   low   alloy   steel (electrode-0.030%[Als],0.29% [Si],20×10^-6 T[O]) remelted   by   a   15   kg   electroslag   remelting (ESR)furnace   with   CaF₂-Al₂O₃-CaO-SiO₂   slag   system  in argon atmosphere with argon flow rate 25 L/min and in air atmosphere have been studied. Results showed that remelted in   air   atmosphere, T[O]   of  ESR   ingot   increased   to   36×10^-6, while [Als]  and [Si] decreased respectively   to   0.011%  and    0. 17%;remelted    in    argon    atmosphere, T[O]    of    ESR    ingot    was    24×10^-6,[Als] and [Si]    were    respectively 0.024%  and  0.28%.As  compared  with  that  remelted  in  air  atmosphere, the  size  of inclusions  in  ingot  remelted  in  argon atmosphere was minor and the distribution of inclusions was more homogeneous and dispersed.

摘要： 试验了15kg电渣炉在CaF₂-Al₂O₃-CaO-SiO₂渣系下,氩气流量25L/min的全氩气保护和大气重熔低合金钢(电极含0.030%[Als]、0.29%[Si]、20×10^-6 T[O])Al、Si的烧损和夹杂物的变化。结果表明,大气重熔时,电渣锭T[O]增加至36×10^-6, [Als]、[Si]分别降至0.011%和0.17%;氩气保护重熔时,电渣锭T[O]为24×10^-6,[Als]、[Si]分别为0.024%和0.28%;与大气重熔相比,氩气保护重熔锭中夹杂物尺寸小,分布均匀、弥散。