Copper-Silver Conductive Wire Twisting for Hardness and Conductivity
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Solution Overview
Problem
The challenge lies in producing conductive wires for electrical properties testing that balance high hardness and high conductivity, as conventional methods like wire drawing or rolling often reduce conductivity and increase production costs, making it difficult to achieve both properties simultaneously.
Innovation Solution
A conductive wire composed of a copper alloy with 0.1 to 30 mass % silver, featuring a fibrous structure extending at an angle of 0.5° to 20° around its circumference, produced through a twisting process where the wire is rotated and pushed at specific angles and speeds to enhance hardness and conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If wire drawing or rolling is performed to increase hardness, then hardness increases, but conductivity decreases
Solution Approach 1:
The invention changes the material composition parameters by adding silver (0.1-30 mass%) to the copper alloy, which fundamentally alters the material properties to achieve both high hardness and high conductivity simultaneously, rather than relying solely on mechanical processing parameters
Solution Approach 2:
The invention creates a composite copper-silver alloy material that combines the high conductivity of copper with the high hardness of silver, achieving a material that possesses both desired properties through compositional复合 rather than mechanical processing
2Ease of manufacture
If casting diameter is increased to enable wire drawing, then wire drawing becomes feasible, but productivity decreases and production costs increase
Solution Approach 1:
The invention changes the material composition parameters (adding silver to copper alloy) to enable wire drawing at smaller casting diameters, thereby improving productivity without sacrificing manufacturability
Data Source
AI summary
A conductive wire for electrical properties testing having high hardness and conductivity, which is composed of a copper alloy, and includes in its outer periphery portion a fibrous structure extending at an angle of 0.5 to 20 degrees with respect to the length direction of the conductive wire.