کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
832864 | 908127 | 2009 | 7 صفحه PDF | دانلود رایگان |
A model is proposed for estimation of ram force in a multi-hole extrusion process and a number of experiments are conducted by extruding lead metal alloy and commercially available candle wax through various dies. The model provides a good upper bound of the ram force, although the quantitative agreement between the estimated and actual lengths of extruded products through various holes of a multi-hole die is not so good. It is also observed that the flow behavior of the material during the extrusion process is different for wax and lead. The micro-hardness and uni-axial tensile tests of the extruded lead products indicate that strain-hardening is more for the products extruded through the central hole than for the products extruded through the holes near the die wall.
Journal: Materials & Design - Volume 30, Issue 7, August 2009, Pages 2386–2392