Method for making metallic cord

Abstract

A method for making a metallic cord made up of one or more metallic wires comprises: making at least two layers of at least two metallic elements including copper and zinc on the surface of a base wire; heating the layers to cause the metallic elements thermodiffusion to transform into a primary alloy layer; making a layer of copper on the primary alloy layer; drawing the wire provided with the primary alloy layer and outer copper layer into a metallic wire through dies so that the outer copper layer is diminished during passing through the dies, and a secondary alloy layer is formed as a result of transformation of the primary alloy layer and the outer copper layer which is caused by frictional heat during passing through the dies.

Dependencies are inferred from the claim text.