The Theoretical Analysis of Wire Drawing （拉丝的理论分析）.pdf

UDK 621.778 The Theoretical Analysis of Wire Drawing Process for Hydrodynamic Friction Conditions Z. Muskalski, S. Wiewiórowska Czestochowa University of Technology Institute of the Modelling and Automation of Plastic Working Processes Al. Armii Krajowej 19; 42-200 Częstochowa, Poland In the work has been shown the theoretical analysis the influence of different friction coefficients on strain intensity, redundant strain and temperature distribution for drawn wires, on the base of drawing process simulation with use of finite element method. Keywords: DRAWING, PRESSURE DIES, FRICTION COEFFICIENT, FINITE ELEMENT METHOD Introduction The construction and scheme of wire drawing process with use of pressure dies shown on Figure 1. Among many known methods, which can be use The pressure die is composed of back-up draw- in the practice for wires productions, we can distin- ing die and working die, which are separated by pack- guish two fundamental: the conventional drawing ing and closed in container. During drawing process process with use of stable dies and another one which the lubricant molecules are adhering to wire surface can improve the friction conditions with use of pres- and next they are inserting to the pressure chamber by sure drawing die. In conventional method of drawing, thin gap (about 0.2 mm) between wire and resistant the process is realized in dry friction conditions or die, producing the hydrodynamic