An experimental study of heat transfer in aluminum castings during water quenching

被引：37

作者：

Xiao, Bowang ^{[1
]}

Wang, Qigui ^{[2
]}

Jadhav, Parag ^{[3
]}

Li, Keyu ^{[3
]}

机构：

[1] Worcester Polytech Inst, Worcester, MA 01609 USA

[2] Gen Motors Co, Mat Technol, Pontiac, MI 48340 USA

[3] Oakland Univ, Dept Mech Engn, Rochester, MI 48309 USA

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2010年 / 210卷 / 14期

关键词：

Heat transfer; Heat transfer coefficient; Water quenching; Aluminum casting; Finite element analysis; RESIDUAL-STRESS; METAL;

D O I：

10.1016/j.jmatprotec.2010.07.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of quenching orientation and agitation conditions on heat transfer of aluminum alloys during water quenching was experimentally investigated with a test casting. The results indicate that heat transfer in water quenching of casting aluminum alloy consists of film boiling, nucleate boiling and convection stages. The highest heat transfer coefficients (HTC) are observed in the nucleate boiling, while the lowest is in the convective cooling stage. The heat transfer coefficients on the horizontal surfaces facing down during quenching are lower than those of other surfaces regardless whether the water is agitated or not. Agitation enhances heat transfer process especially when castings are at high temperatures and heat transfer process is in the film boiling stage. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：2023 / 2028

页数：6

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