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首页> 外文期刊>Journal of Materials Engineering and Performance >An Experimental Study of Heat Transfer During Forced Air Convection
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An Experimental Study of Heat Transfer During Forced Air Convection

机译：强制对流换热的实验研究

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Cast aluminum alloys are usually subject to solution treatment, quenching, and aging hardening for improved mechanical properties. Cooling rate during quenching plays an important role in residual stress, distortion, and mechanical property distributions in the resultant cast aluminum components. As the cooling rates of work pieces heavily depend on the interfacial heat transfer coefficient (HTC) between work pieces and quenchants, it is important to understand how HTC varies with different quenching conditions so that optimal quenching process can be achieved. In this study, a quenching system and an experimental procedure of obtaining HTC are presented. A series of experiments have been conducted to study the variations of HTC with respect to air temperature, air humidity, air velocity, and part orientation.
机译：铸造铝合金通常经过固溶处理，淬火和时效硬化，以改善机械性能。淬火期间的冷却速率在所得铸铝部件的残余应力，变形和机械性能分布中起着重要作用。由于工件的冷却速率在很大程度上取决于工件和淬火剂之间的界面传热系数（HTC），因此了解HTC在不同淬火条件下如何变化非常重要，这样才能实现最佳的淬火过程。在这项研究中，提出了一种淬火系统和获得HTC的实验程序。已经进行了一系列实验来研究HTC在空气温度，空气湿度，空气速度和零件方向方面的变化。

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