Method for manufacturing cu-ag alloy wire and cu-ag alloy wire

Abstract

The invention provides a method for manufacturing Cu-Ag alloy wires for producing extra fine Cu-Ag alloy wires at high production and extra fine Cu-Ag alloy wire. The manufacturing method for performing drawing to the blank containing 0.5 to 15.0 mass% of Ag, to fabricate extra fine wire with the final wire diameter of less than or equal to 0.05mm. The surface layer of the wire located at a midway stage of the drawing before achieving the final wire diameter wire and in which the wire diameter Phi is less than or equal to 1.0mm diameter, is removed. The removal of the surface layer is performed as follows, the thickness t of the removed surface layer satisfies: t/r >=0.02 when 1/2 of the wire diameter Phi of the wire before removing the surface layer. The obtained extra fine Cu-Ag alloy wire or the stranded wire formed by stranding the Cu-Ag alloy wire can be appropriately applied to the coaxial-cable.

Description

technical field [0001] The present invention relates to an ultrafine wire made of a Cu-Ag alloy, a stranded wire using the ultrafine wire as a wire material, a coaxial cable using the ultrafine wire or stranded wire as a conductor, and the above ultrafine wire manufacturing method. Background technique [0002] In recent years, along with demands for miniaturization and weight reduction of various electronic devices, reduction in diameter of conductors such as coaxial cables used in electronic devices has been desired (Patent Document 1). As an ultrafine conductor material, a Cu—Ag alloy wire having high electrical conductivity and higher strength than copper has been proposed (Patent Document 2). [0003] Ultra-fine wires used for ultra-fine conductors are usually produced by drawing blanks such as casting materials. In the manufacturing process, foreign matter from constituent materials such as crucibles and molds used in the steps from melting to casting, and launders c...

AI Technical Summary

Problems solved by technology

Since this amount of waste includes the cost of processing up to 0.02mm, there is a prob