PRIMARY COOLING HEAT TRANSFER DURING THE DIRECT-CHILL CASTING OF ALUMINUM ALLOY AA6111

机译：铝合金直接冷却过程中的主要冷却热传递AA6111

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The heat transfer coefficient (HTC) associated with primary cooling during direct-chill casting of AA6111 aluminum alloy was investigated by conducting casting experiments with an instrumented mould. Mould temperature measurements obtained at various positions were used as input in an inverse heat conduction analysis in order to calculate the heat flux between the ingot and the mould. Heat transfer coefficient profiles versus vertical position within the mould were obtained for casting speeds of 1.39 and 1.83 mm/s. Relatively low HTC values of 93 to 576 W/m~2·K were attributed to the formation of an air gap between the ingot surface and the mould. The experimental heat transfer coefficients were compared to theoretical values predicted using a 3-dimensional CFD model of direct-chill casting with a simple one-dimensional density-based model of shell deformation, which calculates the air gap thickness and the HTC within the mould.

机译：通过用仪表模具进行铸造实验，研究了与AA6111铝合金直接冷却期间的初级冷却相关的传热系数（HTC）。在各种位置获得的模具温度测量用作反导热分析中的输入，以便计算锭和模具之间的热量。为铸造速度为1.39和1.83mm / s而获得了模具内的垂直位置的传热系数曲线。相对较低的HTC值为93至576W / m〜2·k归因于铸锭表面和模具之间的气隙形成。将实验传热系数与使用直接冷却铸造的三维CFD模型进行预测的理论值，其具有简单的一维密度基壳体变形模型，其计算模具内的气隙厚度和HTC。

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《International Conference on Aluminum Alloys》|2012年||共10页
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Etienne Caron; Amir Baserinia; Rosa O. Pelayo; David C. Weckman; Mary A. Wells;
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中图分类 TG166.3-53;
关键词
Primary Cooling; Direct-Chill Casting; Inverse Heat Conduction;

机译：初级冷却;直接冷却铸造;反热传导;

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PRIMARY COOLING HEAT TRANSFER DURING THE DIRECT-CHILL CASTING OF ALUMINUM ALLOY AA6111

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