Description

This paper assesses the influence of the die approach and bearing on mechanical-technological properties of high-carbon steel wires. The drawing process of 2.9 mm wires to the final wire of 1.98 mm was conducted in 5 passes, by means of a multi-die drawing Koch machine. The drawing speeds in the final passes were 4 m/s. The investigation of mechanical-technological properties was conducted for wires drawn according to four variants, in which yield strength, tensile strength, uniform and total elongation, reduction of area, the number of twists and the number of bends were determined.