论文部分内容阅读
通过对IF钢水口结瘤物各层成分及形貌的分析,得出造成水口结瘤的主要原因是Al2O3夹杂物在水口内壁不断聚集和烧结.比较了不同铝耗对塞棒杆位的影响,铝耗较高时,塞棒杆位明显上涨,当铝耗超过3.5 kg·t-1时,可能导致钢水断浇等生产事故.对平均铝耗及平均终脱氧氧位作了定义,随着平均铝耗的增加,单支下水口浇铸时间呈下降趋势,当平均铝耗超过3.5 kg·t-1时,单支下水口浇铸时间低于50 min.铝耗随终脱氧氧位提高呈增加趋势,当终脱氧氧位在600×10-6以上时,铝耗可能超过3.0 kg·t-1;而平均终脱氧氧位超过600×10-6时,单支下水口浇铸时间可能低于50 min.
Through the analysis of the composition and morphology of each layer of the nodule of IF steel, it is concluded that the nodule formation of the nozzle is caused by the continuous aggregation and sintering of Al2O3 inclusions in the inner wall of the nozzle. , When the aluminum consumption is high, rod rod position obviously increases, when the aluminum consumption exceeds 3.5 kg · t-1, it may lead to production accidents such as the pouring of molten steel etc. The average aluminum consumption and the average final oxygen deoxygenation degree are defined as When the average aluminum consumption exceeds 3.5 kg · t-1, the casting time of single outlet is less than 50 min, and the aluminum consumption increases with the final deoxygenation When the final deoxygenation level is above 600 × 10-6, the aluminum consumption may exceed 3.0 kg · t-1. When the average final deoxygenation oxygen concentration exceeds 600 × 10-6, the casting time of single outlet may be low At 50 min.