Preparation method of copper alloy wire for ultra-fine coaxial cable

Abstract

The invention discloses a preparation method of a copper alloy wire for an ultra-fine coaxial cable. The copper alloy wire comprises the following elements in percentage by weight: 0.3% of tin, 0.005-0.007% of silver, 0.005-0.007% of nickel, 0.005-0.007% of magnesium, 0.005-0.007% of indium and 0.005-0.007% of lanthanum, wherein the ratio of the silver content to the nickel content to the magnesium content to the indium content to the lanthanum content is 1:1:1:1:1; and the sum of the content of elements such as copper, tin, silver, nickel, magnesium, indium, lanthanum and the like is more than 99.995%. The preparation method comprises the steps of high-purity copper smelting, directional solidification, peeling, rolling, annealing, wire drawing and the like; and the prepared copper alloywire has excellent comprehensive performance.

Description

technical field [0001] The invention relates to a method for preparing a nonferrous metal material, in particular to a method for preparing a copper alloy wire for an ultra-thin coaxial cable. Background technique [0002] With the technological development of electronic equipment for medical care, ultra-thin coaxial cables for medical electronic equipment are very important. It is required to reduce the outer diameter of the cable without increasing the number of cable cores, and to have excellent image signal transmission performance. . As copper wires become more and more micronized, the performance requirements for copper wires are also getting higher and higher. After cold drawing and annealing, the mechanical and electrical properties of the fine copper wire will change. That is, when the cold deformation of the copper wire is greater, the deformation energy stored in the copper wire is also greater. The recrystallization of the cold-drawn fine copper wire at room te...

AI Technical Summary

Problems solved by technology

After cold drawing and annealing, the mechanical and electrical properties of the fine copper wire will change. That is, when the cold deformation of the copper wire is greater, the deformation energy stored in the copper wire is also greater. The recrystallization of the cold-drawn fine copper wire at room temperature softens the performance of the cold-drawn fine copper wire recrystallized at room temperature, reduces the drawability of the copper wire, and leads to uneven recrystallization grains after annealing, Causes the copper wire to be easily broken during the preparation process, affecting the length and performance of the copper wire