论文部分内容阅读
据,1987;(7):26～28报道,为保证大型钢锭具有较高的质量,必须采取以防止非中心部分偏析的扩展和白点的形成。钢水用140t碱性平炉冶炼,同时用0.02～0.05％Si进行钢水预脱氧,钢水中硫和氢的含量分别为0.015～0.025％和3.9～4.6PPm。用150t大罐在炉外精炼和真空脱气装置上进行钢水处理,大罐工作层衬砖为高氧化铝质,而渣线部分为镁铬砖。精炼过程包括未脱氧和脱氧钢水的真空
According to 1987; (7): 26 ~ 28 reported, in order to ensure large ingot with high quality, must be taken to prevent the expansion of non-central part of the segregation and the formation of white spots. The molten steel was smelted with a 140t alkaline open hearth and pre-deoxidized with 0.02-0.05% Si. The contents of sulfur and hydrogen in the molten steel were 0.015-0.025% and 3.9-4.6 ppm, respectively. With 150t large tank in the furnace refining and vacuum degassing equipment for molten steel processing, large tank lining brick is high alumina, while the slag line part of the magnesia-chrome brick. The refining process includes the vacuum of non-deoxidized and deoxidized molten steel