The Effect of Fluid Flow on the Macrosegregation in Steel Ingot
The Effect of Fluid Flow on the Macrosegregation in Steel Ingot
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DOI：
10.2355/tetsutohagane1955.61.9_2198
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发表时间：
1975-07
影响因子：
0.3
通讯作者：
Tadayoshi Takahashi;K. Ichikawa;Masayuki Kudou;Kouichi Shimahara
中科院分区：
文献类型：
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作者：
Tadayoshi Takahashi;K. Ichikawa;Masayuki Kudou;Kouichi Shimahara
如果能获得凝固过程中液相的流动速度，就有可能定量地反映钢锭的宏观偏析。研究发现，将泰勒涡流的流体动力学方法应用于凝固过程，可以确定散装液体的流速。利用该方法，导出了以下关系式：式中U：有效分配系数Ke是根据固液两相凝固区湍流混合传质理论推导出来的。其表示如下：凝固过程中的冲刷深度存在一个极限，一个是由于枝晶的生长，固体的极限因子约为0.67。得到了枝晶偏转角与凝固速率和液相流速之间的关系。
Synopsis It is possible to show quantitatively the macrosegregation in steel ingot if the flow velocity of bulk liquid during solidification can be obtained. It is found that the flow velocity of bulk liquid is determined by applying the hydrodynamical method known as Taylor's vortex flow to the solidifi cation. Using this method, the following relation is introduced, where, U: the The effective distribution codficient, K e, is theoretically deduced on the basis of the mass transfer with turbulent mixing in the solidifying zone, which iJ com/losed of solid and liquid. It is expressed as follows: There is a limit for the washing depth in the solidifying ;:one because of the growing dendrite mOlpIIOLog)', and the Limiting fmctioll of solid is about 0.67. Furthermore the relation among the deflection angle of dendrite, the solidification rate and the flow velocity of bulk liquid is ob tained.