论文部分内容阅读
石油用无缝钢管对钢中金属残余元素（Ni，Cr，Cu）和五害元素（Ph，Sn，As，Sb，Bi）的含量有严格的限制。一般在炉料中配一定量的直接还原铁以降低钢中残余元素含量。例如俄罗斯OEMK钢厂在冶炼中配加比例高达80％的直接还原铁生产棒、板、管材；加拿大的Cidbec－Dosco厂在冶炼
Seamless steel tubes for petroleum have strict limits on the content of residual metals (Ni, Cr, Cu) and five harmful elements (Ph, Sn, As, Sb, Bi) in steel. Generally in the charge with a certain amount of direct reduction of iron to reduce the residual elemental steel content. For example, the Russian OEMK steel mills in the smelting with up to 80% of the proportion of direct reduced iron production rods, plates, pipes; Canada’s Cidbec-Dosco plant smelting