Variation in mechanical properties due to speed in cold wire drawing

Abstract

The use of high speed in the wire drawing process become very common because of increase in customer demands
and production rate and it is vary essential to the the effect of speed on the properties of the drawn wire. In this work the
effect of high speed drawing (8m/s &25m/s) on mechanical and technological properties of high carbon steel wire has been
investigated. Wire rod 5.50mm from steel grade 0.51% carbon and 0.65% carbon were drawn to 1.35mm in 13 draws and
two speeds 8m/sec and 20m/sec. After each draw the following properties were determined; tensile strength (Ts), temperature
(T), number of twists (Nt), number of bends (Nb). A large drop in the number of has been observed for final wires because of
increased draw speed. However, there is also an advantage as the wire surface is much smoother after drawing at high speed
than at low speed. The results were practically and statistically estimated