سال انتشار: ۱۳۹۰

محل انتشار: نوزدهمین همایش سالانه مهندسی مکانیک

تعداد صفحات: ۴

نویسنده(ها):

M.R. Shabgard – Department of Mechanical Engineering, University of Tabriz, Tabriz, Iran;
M. Seyedzavvar – Department of Mechanical Engineering, University of Tabriz, Tabriz, Iran;
R. Ahmadi – Department of Mechanical Engineering, University of Tabriz, Tabriz, Iran;
S. Nadimi Bavili Olaei – Department of Mechanical Engineering, Middle East Technical University, Ankara, Turkey

چکیده:

In this work, a finite element-based model has been developed to model the temperature distribution for AISI H13 tool steel workpiece in the Electrical Discharge Machining (EDM) process at different machining parameters. The studied process parameters include pulse current and pulse on-time. Several critical factors including temperature-sensitive material properties, size of heat source, and material flushing efficiency have been taken into account to predict the white layer thickness and depth of heat affected zone of such a workpiece. Both the numerical and experimental results of this study show that increasing the pulse ontime leads to a higher white layer thickness and depth of heat affected zone. On the other hand, a slight decrease of the white layer thickness and depth of heat affected zone were observed by increase in the pulse current.