| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method capable of manufacturing an extra fine metal wire, which is less in the degradation of extension performance caused by work hardening by overcoming the weak point of a conventional wire drawing method. Ž<P>SOLUTION: A rolling stage is added after performing a wire drawing stage where the wire rod 10 having a predetermined diameter is obtained by threading a material 10M through the hole 102 of a die 100 and drawing it. In the rolling stage, the extra fine metal wire 10A having the predetermined cross-sectional area is rolled by rotating a pair of rolls 1, 1 which are provided with a working groove 2 corresponding to the cross-sectional shape of the extra-fine metal wire 10A to be manufactured on the outer peripheral surface and applying pressure to the pair of rolls 1, 1 by threading the wire rod 10 of a base stock through the die hole 3 which is formed by the working groove 2 between the respective outer peripheral surfaces 1a, 1a of the pair of the rolls 1, 1. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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