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首页> 外文会议>2006 BIMW >Low-frequency Electromagnetic Field Influencing Horizontal Direct Chill Casting of Aluminum Alloy Rods
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Low-frequency Electromagnetic Field Influencing Horizontal Direct Chill Casting of Aluminum Alloy Rods

机译：低频电磁场影响铝合金棒的水平冷硬铸造

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摘要

The horizontal direct chill (HDC) casting process is a well-established production route for an aluminum alloy ingot; however, the ingot may suffer from inhomogeneous microstructures and serious macrosegregation due to the unbalanced cooling condition and gravitational effect. In order to control the defect, a low frequency electromagnetic field has been applied in the HDC casting process and its influences on microstructures and macrosegregation have been studied. The results show that the low frequency electromagnetic field can improve macrostructures, reduce inhomogeneous microstructures and macrosegregation in HDC product; and two main parameters of the electromagnetic field-density and frequency influence the microstructures and solution distribution along the diameter of the ingot significantly. In the range of ampere-turns and frequency employed in the experiments, the optimum ampere-turns and frequency have been found to be 10000At, 30Hz.
机译：水平直接冷铸（HDC）铸造工艺是铝合金铸锭的成熟生产路线;然而，由于冷却条件和重力效应的不平衡，铸锭可能会出现微观结构不均匀和严重的宏观偏析。为了控制缺陷，在HDC铸造过程中应用了低频电磁场，并研究了其对微观组织和宏观偏析的影响。结果表明，低频电磁场可以改善HDC产品的宏观结构，减少不均匀的微观结构和宏观偏析。电磁场密度和频率这两个主要参数会显着影响铸锭直径的显微组织和溶液分布。在实验中使用的安培匝数和频率范围内，发现最佳安培匝数和频率为10000At，30Hz。

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