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前言武钢二炼钢冶炼低碳和超低碳钢比例占95％以上。众所周知,随着钢水终点含碳量的降低,钢中氧含量成倍的上升。根据我们用GLQX定氧探头和仪表系统测定终点钢水的结果,当T_终在1670～1680℃,〔C〕_终在0.10％左右时,钢中含氧量为600～800ppm,因此需要加入大量的铝才能保证达到连铸钢水要求的含氧量(镇静钢要求〔O〕<30ppm,沸腾钢要求〔O〕30～60ppm)。铝是国家的短线材料,高消耗不仅造成物质上的浪费,使钢的成本增加,而且使钢中Al_2O_3夹杂大幅度上升恶化了钢的质量。因此,多年来我们一直致力于在保证钢质的前提下如何降低铝的消耗的研究。
Foreword Wuhan Iron and Steel II smelting low carbon and ultra-low carbon steel accounted for more than 95%. It is well known that the oxygen content in steel increases exponentially as the carbon content of molten steel decreases. Based on the results of the determination of the final molten steel using the GLQX oxygen probe and the instrumentation system, the oxygen content in the steel is 600 to 800 ppm when the T_ finally reaches about 1670 ° C to 1680 ° C and the [C] A large amount of aluminum to ensure that the required oxygen content of continuous casting molten steel (O steel required [O] <30ppm, boiling steel requirements 〔O〕 30 ~ 60ppm). Aluminum is the country’s short-term materials, high consumption not only caused material waste, so that the cost of steel increased, but also greatly increased steel inclusions Al 2 O 3 deteriorated the quality of steel. Therefore, we have been working for many years on how to reduce the consumption of aluminum under the premise of steel quality.