Heat Transfer Coefficient of Cooling Water in Continuous Casting by Inverse Method

Shi Hongjun Yang Yitao Zhang Henghua Shao Guangjie

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Heat Transfer Coefficient of Cooling Water in Continuous Casting by Inverse Method
Issue 9, Pages: 528-530(2005)
Published： 2005 ，
DOI：

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[1]施鸿均,杨弋涛,张恒华,邵光杰.逆向法确定铝合金连铸喷水冷却的换热系数[J].特种铸造及有色合金,2005(09):528-530+510.

Shi Hongjun Yang Yitao Zhang Henghua Shao Guangjie. Heat Transfer Coefficient of Cooling Water in Continuous Casting by Inverse Method. [J]. Special Casting & Nonferrous Alloys (9):528-530(2005)
[1]施鸿均,杨弋涛,张恒华,邵光杰.逆向法确定铝合金连铸喷水冷却的换热系数[J].特种铸造及有色合金,2005(09):528-530+510. DOI：

Shi Hongjun Yang Yitao Zhang Henghua Shao Guangjie. Heat Transfer Coefficient of Cooling Water in Continuous Casting by Inverse Method. [J]. Special Casting & Nonferrous Alloys (9):528-530(2005) DOI：

摘要

确定适当的冷却制度

尤其是对水冷换热系数的研究

对于提高连铸坯质量意义重大

为此

建立了铝合金连铸过程中喷水冷却换热系数的二维计算模型

采用试验测试铸坯冷却过程温度场和计算机模拟相结合的方法

可以比较准确地计算出冷却水的换热系数hα。结果表明

换热系数随着喷水量的增加而增大;随表面温度的升高呈先增后减的趋势。铸坯表面温度为50

50℃、喷水量为2.0

.8m3/h条件下

冷却水的换热系数hα=0.52（3759.61+24.39T-0.059T2）W0.94。

Abstract

Heat transfer coefficient of cooling water h

was calculated by experimental temperature field combining with simulated ones

in which estimated results of heat transfer coefficient of cooling water based on one-dimensional approximate difference method were employed by linear interpolation method.The results showed that heat transfer coefficient is increased with the augment of watering quantity

and earlier increased and then reduced with increase of surface temperature.The heat transfer coefficient h

is equal to （0.52（3 759.61+）24.39T-0.059T

）W

-0.94

under conditions of surface temperature of 50～550 ℃ and the cooling water of 2.0～3.8 m

/h.