| 摘要 |
PURPOSE:To prevent the segregation and to obtain the homogeneous metal by specifying the range to be reduced and rolling-reduction rate for cast slab in a continuous casting for molten metal. CONSTITUTION:The range to be reduced is set as an area ranging from the point that the center part of cast slab becomes to the temp. corresponding to 0.1-0.3 solidus phase ratio to the point that the center part becomes to temp. corresponding to fluid limit solidus phase ratio. Further, about the rolling- reduction rate, so as to come to range shown by 0.6xsi<=(x)<=1.1xsi for (x) rolling reduction rate per unit time, the cast slab is continuously reduced. In this inequality, xsi=4/gamma, 1<=gamma<=4, gamma: flatness ratio, x: rolling reduction rate (mm/min). |
