METAL WIRE MATERIAL HAVING LARGE STRAIN LED THEREIN BY CONTROLLED WORM ROLLING, AND METHOD AND APPARATUS FOR MANUFACTURING THE METAL WIRE MATERIAL

摘要

A method and an apparatus for manufacturing a metal wire material capable of providing excellent strength and ductility to the metal wire material without applying a special heat treatment to the metal wire material for secondary machining or tertiary machining and efficiently manufacturing a thin metal wire of such a large unit weight that could not be provided in the past by continuously rolling the metal wire material controlled within a warm temperature range so that a true strain becomes at least 0.25 or higher by a plurality of caliber rolling mills to form a large strain in the metal wire material.