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针对邢钢在铁水预处理+AOD炉+LF炉+连铸机生产0Cr13C不锈钢过程中AOD炉的冶炼周期远大于连铸机浇钢和脱磷站的处理时间,导致整个不锈钢生产线的生产效率受到限制这个问题进行研究。研究入炉冷钢比例、高碳铬铁硅质量分数对AOD炉提枪碳质量分数、提枪温度以及冶炼周期的影响。研究得出,降低AOD炉0Cr13C冶炼周期的思路主要是控制提枪碳质量分数;包含成本在内,当入炉高碳铬铁硅质量分数不小于3.0%、废钢加入量为3.0~3.5t时,可以缩短AOD炉0Cr13C的冶炼周期到77min附近,提枪温度和提枪碳质量分数分别为1 682℃和0.49%,并且炉龄和物料消耗等综合指标较好。
Aiming at Xinggang’s smelting cycle of 0Cr13C stainless steel in hot metal pretreatment + AOD furnace + LF furnace + continuous casting machine, the smelting cycle of AOD furnace is much larger than the processing time of continuous casting and dephosphorization station, resulting in the production efficiency of the entire stainless steel production line being affected Limit this issue to research. The effects of the proportion of cold-rolled steel and the mass fraction of high-carbon ferrochromium on the carbon mass fraction, ram temperature and smelting cycle in AOD furnace were investigated. The research shows that the idea of reducing the 0Cr13C smelting cycle in AOD furnace is mainly to control the carbon mass of the shotgun. When the mass fraction of high-carbon ferrochrome into the furnace is not less than 3.0% and the amount of scrap steel is 3.0 ~ 3.5t , The smelting cycle of 0Cr13C in AOD furnace can be shortened to 77min, the temperature of raising gun and the carbon mass of ram gun are respectively 1 682 ℃ and 0.49%, and the comprehensive indexes such as furnace age and material consumption are better.