METHOD FOR PRODUCING ALUMINUM ALLOY WIRE

摘要

PROBLEM TO BE SOLVED: To provide a method for producing an aluminum alloy wire which has high toughness and high electrical conductivity.SOLUTION: The method for manufacturing an aluminum alloy (Al alloy) wire includes the steps of: forming a cast material by casting a molten Al alloy containing not less than 0.005% and not more than 2.2% by mass of Fe and a remainder including Al; forming a rolled material by performing rolling on the cast material; forming a wiredrawn material by performing wiredrawing on the rolled material; forming a stranded wire by stranding together the wiredrawn materials; forming a compressed wire by compressing the stranded wire; and forming a softened material by performing softening treatment on the compressed wire. The softening treatment is performed on the wiredrawn material so that the wiredrawn material having undergone the softening treatment has an elongation of not less than 10%. For example, it is performed at a temperature of not less than 250°C by a batch treatment. The softening treatment can be performed to provide an excellent toughness such as elongation and impact resistance and thereby reduce fracture of the electric wire in the vicinity of a terminal portion when the wire harness is installed.