Production manner of the straight angle conductor and the production mannered null tin

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method of a rectangular conductor which does not impair an elongation property and can prevent an occurrence of whiskers when forming a flat cable, and to provide a manufacturing method of a flat cable.;SOLUTION: A tin-plated round copper wire 11a is firstly rolled flat and a tin-copper alloy layer 24 is formed by an electric conduction heating to reduce a thickness of a pure tin-plated layer 23, and another rolling and electric conduction heating are carried out. As a result, a rectangular shape is obtained and, without impairing an elongation property and an appearance, the pure tin-plated layer 23 can be made thinner, and an occurrence of whiskers can be prevented when applied for a flat cable 40 and a rectangular conductor 20 with an excellent flexibility can be produced.;COPYRIGHT: (C)2008,JPO&INPIT