Drawing of Twisted Square Section Rod from Round Bar: An Analysis and Some Experiments

Abstract

In this paper, slab method of analysis has been applied to calculate the drawing force necessary to carry out a drawing process of square twisted rod from round bar. Because of the complexity of the metal flow inside the die, analysing the real process is complicated. In this study, the idea is to analyze the equivalent axisymmetric process instead of complicated real process. In equivalent process, in each position on the die axis, perpendicular cross sections on the actual die and the equivalent die have the same area. The obtained analytical results were compared with the experimental results were done for steels and copper alloys rods in diameters of 10, 8 and 6 mm to twisted square section rods with sides of 8, 6 and 5 mm, respectively. Comparison of the experimental and theoretical drawing forces showed an acceptable agreement

Keywords

• Twisted square section rod, Drawing force, Slab method

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