EFFECT OF DEFORMATION AND OXYGEN-CONTENT ON MECHANICAL-PROPERTIES OF DIFFERENT COPPER WIRES

Investigations were done at dip-forming, contirod and SCR copper wire rods. These continuously cast and hot rolled copper wire rods (8 mm in diameter) were cold drawn in two drawing programmes (soft and hard dr awn) to various diameters without any intermediate annealing. The resu lts of influence of deformation and oxygen content on the flow stress, tensile elongation and number oi twist to failure are given. Strength and strain hardening rates of hard-drawn wires always were higher tha n the soft-drawn wires. Oxygen effect on the ductility of copper wires measured with the tensile elongation and the number of twist to failu re is not clear at large drawing prestrains.