Numerical Simulation of Electromagnetic Continuous Casting AZ31 Magnesium Billets

Qiu Yue; Zhang Xingguo; Ren Zheng; Sui Li; Hao Hai

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Numerical Simulation of Electromagnetic Continuous Casting AZ31 Magnesium Billets
Vol. 30, Issue 2, Pages: 152-156(2010)
Published： 2010 ，
DOI：

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[1]邱月,张兴国,任政,隋里,郝海.AZ31镁合金圆锭电磁连续铸造过程的数值模拟[J].特种铸造及有色合金,2010,30(02):152-156+95.

Qiu Yue, Zhang Xingguo, Ren Zheng, et al. Numerical Simulation of Electromagnetic Continuous Casting AZ31 Magnesium Billets. [J]. Special Casting & Nonferrous Alloys 30(2):152-156(2010)
[1]邱月,张兴国,任政,隋里,郝海.AZ31镁合金圆锭电磁连续铸造过程的数值模拟[J].特种铸造及有色合金,2010,30(02):152-156+95. DOI：

Qiu Yue, Zhang Xingguo, Ren Zheng, et al. Numerical Simulation of Electromagnetic Continuous Casting AZ31 Magnesium Billets. [J]. Special Casting & Nonferrous Alloys 30(2):152-156(2010) DOI：

摘要

通过有限差分法

利用Visual C++6.0建立AZ31镁合金电磁连续铸造过程的数学模型

该模型可预测铸锭及底模的温度分布。利用温升法测量了电磁连铸过程铸锭内部的感应热量值和分布

得到了沿结晶器水平方向、垂直方向不同条件下的感应热分布

并计算获得了该试验条件下的感应加热功率

在数值模拟时有效地合并到了温度场的数值计算模型中。确定一冷区、二冷区以及铸锭与底模之间的边界条件。通过将计算结果与实测温度的比较

证明该模型可以用来模拟实际铸造过程。研究了不同铸造条件对铸锭温度场分布的影响

为优化镁合金电磁连铸的工艺参数提供了依据。

Abstract

A mathematical model on the electromagnetic continuous casting magnesium alloy billets was established to predict the temperature distribution in the billet and dummy block using VC++6.0 and finite differential method（FDM）. Induction heating distributions at horizontal and vertical directions along mould at varied conditions were presented by measuring induction heating and its distribution in electromagnetic continuous casting billets based on temperature-increment method

and induction heating power was calculated

which was considered into the mathematical model for calculating temperature field. Boundary conditions of primary、secondary cooling zone and interfacial cooling between billet and dummy block were determined. The simulated results are well in agreement with the experimental ones

showing the availability of the model. Effects of different parameters on distribution of temperature field in billets were investigated to optimize the processing parameters.