Cr12型模具钢氧化法冶炼工艺

Cr12 die steel smelted by oxidizing process

介绍了传统电炉的返回吹氧法生产Cr12型高合金模具钢的工艺特点.通过分析传统工艺的优劣,针对"EBT+LF"二步法冶炼工艺的特点,客观上确定了新工艺流程冶炼该钢种的可行性.通过合理安排电弧炉生产,总结生产中的各种要求,逐步解决了新工艺冶炼Cr12模具钢中存在的困难.产品质量检验表明:使用该生产工艺,Cr12型模具钢成分稳定,终点控制命中率高,有利于保持产品质量的稳定性.氧化法冶炼Cr12型模具钢较之返回吹氧法有明显的经济效益,合计吨钢效益达到787元/t.

The technique of producing Cr12 high alloy die steel by the traditional recirculating metal oxygen lancing process was introduced. By analyzing the merits and the disadvantage of the traditional process and the smelting characteristics of the 'EBT + LF' two-step process, the feasibility of producing Cr12 die steel by the new oxidizing process was defined. By reasonable arranging EAF production and summing-up the various pro-duction requirements, the existing difficulties of the new technology were gradually resolved. The results of product quality testing show that by using the oxidizing process, the components of Cr12 die steel are stable and the end-point hit rate is high, which is conducive to maintaining the stability of product quality. Compared with the traditional process, the oxidation smelting of Cr12 die steel brings obvious economic benefits, and the total efficiency reaches 787 RMB/t.