کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4626410 1631786 2015 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mould-taper asymptotics and air gap formation in continuous casting
ترجمه فارسی عنوان
آسیب شناسی تکه و تشکیل شکاف هوا در ریخته گری مستمر
کلمات کلیدی
ریخته گری مستمر، تشکیل شکاف هوا، همبستگی تنگ
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات ریاضیات کاربردی
چکیده انگلیسی

We develop a coupled thermomechanical model, that includes mould taper, for the formation of air gaps in the vertical continuous casting of round billets. The system is very sensitive to the small width of the air gap. Mould tapers are used to mitigate the contraction of the solidified shell during cooling. We apply numerical and perturbation methods to show that a small mould taper significantly reduces the insulating effect of the air gap. The analysis is presented in a more transparent and less computationally expensive way than earlier, fully numerical models. We also consider a theoretical ideal taper, which eliminates the air gap altogether. The air gap is found to be quite robust; increasing the size of the taper does not constitute an equal reduction in the air gap size. Sample computations are carried out using parameters for the continuous casting of a pure metal (copper), although the framework can easily be extended to the continuous casting of alloys.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Mathematics and Computation - Volume 268, 1 October 2015, Pages 1122–1139
نویسندگان
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