论文部分内容阅读
残余元素超标,是电炉炼钢在熔化期末炉料熔清时,取样分析残余元素W、Ni、Mo等,超出所炼钢种的化学成分标准要求,导致熔化期改变作业计划而改炼相应钢种,从而使炼钢过程发生转折的供料质量问题。而残余超标改炼45钢球料(以下简称残余改球)是其特例,它是由于受合同品种限制或其它因素影响,无法改炼相应钢种,最终改炼球料,其经济效益损失严重。1990～1991年,特钢公司仅因供料混
Residual elements exceeded the electric furnace steel melting at the end of the furnace when the charge is clear, the sample analysis of residual elements W, Ni, Mo, beyond the standard chemical composition of the steel grade requirements, leading to the melting period to change the operation plan and the corresponding steel , So that the turning point in the steelmaking process of feed quality problems. The remnants of 45 balls of excess refining material (hereinafter referred to as residual ball change) is its special case, it is due to restrictions on the contract varieties or other factors, can not modify the corresponding steel, the final ball refining, its serious loss of economic benefits . From 1990 to 1991, special steel companies only because of mixed feed