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随着用户对钢板加工性能要求的提高和适应连续退火工艺的IF钢的增加,对于减少连续板坯中的非金属夹杂物和气泡等的要求更加严格。这些缺陷是因脱氧生成物,吹入的Ar气等在中间包内未上浮分离而进入结晶器内所造成。特别是弧型连铸机,钢液注入结晶器后,上浮的夹杂物和气泡易聚集在板坯内弧侧1/8厚度处。为解决这一问题,控制结晶器内钢液流动,促进夹杂物和气泡上浮是必要的。 为此,日本神户钢铁公司加古川钢铁厂开发了以线性马达式的结晶器内电磁搅拌装置控制钢液流动
With the increasing demand of steel sheet processing performance and the increase of IF steel to meet the continuous annealing process, the requirements for reducing non-metallic inclusions and bubbles in a continuous slab are stricter. These defects are caused by the deoxygenated product, the blown Ar gas, and the like, which do not float in the tundish and enter the mold. In particular, the arc-type caster, molten steel into the mold, the floating inclusions and bubbles easily gathered in the slab on the arc side 1/8 thickness. In order to solve this problem, it is necessary to control the flow of molten steel in the mold and to promote inclusions and bubble floating. To this end, Japan Kobe steel company Kakogawa steel plant has developed a linear motor type of mold within the electromagnetic stirring device to control the flow of molten steel