Determination of the interfacial heat transfer coefficient for a hot aluminium stamping process

被引：48

作者：

Liu, Xiaochuan ^{[1
]}

Ji, Kang ^{[1
]}

El Fakir, Omer ^{[1
]}

Fang, Haomiao ^{[2
]}

Gharbi, Mohammad M. ^{[3
]}

Wang, LiLiang ^{[1
]}

机构：

[1] Imperial Coll London, Dept Mech Engn, London SW7 2AZ, England

[2] Nissan Motor Mfg, Sunderland SR5 3NS, Tyne & Wear, England

[3] Schuler Pressen GmbH, D-73033 Goeppingen, Germany

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2017年 / 247卷

关键词：

Interfacial heat transfer coefficient (IHTC); Hot aluminum stamping; AA7075; IHTC test facility; OXIDE SCALE; ALLOYS;

D O I：

10.1016/j.jmatprotec.2017.04.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The interfacial heat transfer coefficient (IHTC) is an important thermophysical parameter in hot stamping processes and must be identified not only to retain the full mechanical strength of formed components, but also to optimise the production rate. In this work, a novel experimental facility was developed and applied to measure the temperature evolutions of the specimens and tools in stamping processes. Simulated temperature evolutions obtained using the FE software PAM-STAMP were then fit to this data. The IHTC values between AA7075 and three different tool materials were characterized at different contact pressures under both dry and lubricated conditions. In addition, a mechanism based IHTC model was developed and validated as a function of contact pressure, tool material and lubricant thickness to predict the IHTC values under different conditions.

引用

页码：158 / 170

页数：13

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