Continuous bending-drawing process to manufacture the ultrafine copper wire with excellent electrical and mechanical properties

New continuous bending-drawing process to manufacture ultrafine electric wire is proposed. This process is capable of manufacturing ultrafine wire with excellent electrical and mechanical properties, by controlling the microstructure and grain orientations affected by the loading directions during drawing and bending. The mechanical properties and microstructure evolution of copper alloy deformed by the process was systematically investigated. It was confirmed that change of grain size and deformation induced texture that was introduced by the process have great effects on the successful manufacturing of ultrafine wire of 210 μm diameter with excellent mechanical properties, such as good ultimate strength and total elongation.