Aluminum wire manufacturing method

A method for manufacturing an aluminum wire comprising an inner-layer conductor having at least one inner-layer alloy wire including aluminum and an outer-layer conductor having a plurality of outer-layer alloy wires including aluminum and provided on the inner-layer conductor, the method comprising:

• an inner-layer twisting step of twisting, in a twisting direction, a plurality of inner-layer alloy wires, including the at least one inner-layer alloy wire, to form the inner-layer conductor;
• an inner-layer rotational compression step of compressing the plurality of inner-layer alloy wires twisted in the inner-layer twisting step;
• an outer-layer twisting step of twisting, in the twisting direction and over the inner-layer conductor, the outer-layer alloy wires provided on the inner-layer conductor that is performed after the inner-layer rotational compression step;
• and
• an outer-layer rotational compression step of compressing the outer-layer alloy wires twisted in the outer-layer twisting step while rotating the outer-layer alloy wires in a same direction as the twisting direction of the twisting in the inner-layer twisting step and the outer-layer twisting step.