AN ANALYSIS OF THE STEADY-STATE WIRE DRAWING OF STRAIN-HARDENING MATERIALS

A comprehensive investigation of the steady-state wire drawing process has been done to study the effects of various process variables on important drawing parameters and deformation, the process variables considered being the reduction ratio, the die semi-angle, the coefficient of friction and the back tension, whilst the drawing parameters studied are the die-pressure, the drawing stress and the separation force. The deformation is represented by contours of equivalent strain and of equivalent strain-rate. The quantitative effects of strain hardening on the drawing parameters and qualitative effects on the deformation are studied also. A comparison of the drawing parameters is made for three materials (copper, aluminum and steel).