کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
660044 1458140 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determination of the heat transfer coefficient at metal–die interface of high pressure die casting process of AM50 alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Determination of the heat transfer coefficient at metal–die interface of high pressure die casting process of AM50 alloy
چکیده انگلیسی

This paper focuses on the determination of the interfacial heat transfer coefficient (IHTC) at the metal–die interface in the high pressure die casting (HPDC) process. Experiment was conducted and a “step shape” casting was used to cast a magnesium alloy AM50 against a H13 steel die. Based on the temperature measurements inside the die, IHTC was determined by applying an inverse approach. The influences of the step thickness and process parameters on the IHTC were investigated. Results show that the shape of IHTC profiles is different at different steps and the duration for IHTC to maintain a higher value grows as the step thickness increases. The influence of process parameters is mainly on the IHTC peak value. For thinner steps, a higher fast shot velocity leads to a higher IHTC peak value. But for thicker steps such as Step 5, the casting pressure shows a more prominent influence on the IHTC peak value. Also, at these thicker steps a lower initial die surface temperature always leads to a higher IHTC peak value.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 51, Issues 25–26, December 2008, Pages 6032–6038
نویسندگان
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