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Method for manufacturing Cu-Ta multi-core composite wire rod

A composite wire, cu-ta technology, applied in the direction of cable/conductor manufacturing, electrical components, circuits, etc., can solve the problem that the strength of the material cannot be further improved, and achieve obvious hardening effect, small thermal expansion coefficient, and high ductility Effect

Active Publication Date: 2015-07-01
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Cu-Nb microscopic composite material prepared by this method has reached the processing limit, and the strength of the material cannot be further improved, and the strength is generally between 800MPa and 1000MPa

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Step 1. Use vacuum electron beam welding to seal and weld one end of the oxygen-free copper sheath, and then put a tantalum rod with a quality purity of 99.95% and a diameter of Φ57mm into the oxygen-free In the copper sheath, vacuum electron beam welding is used to seal and weld the other end of the oxygen-free copper sheath with the tantalum rod to obtain a Cu-Ta single-core composite sheath; the tantalum in the Cu-Ta single-core composite sheath The mass percentage composition is 90.7%, and the balance is copper;

[0028] Step 2. Insulate the Cu-Ta single-core composite sheath described in step 1 at a temperature of 720°C for 3 hours, and then perform hot extrusion at an extrusion ratio of 6.5 to obtain Cu-Ta with a diameter of Φ25.5mm. Ta single core composite rod;

[0029] Step 3, the Cu-Ta single-core composite rod described in step 2 is drawn 51 times to obtain a Cu-Ta single-core composite wire with a regular hexagonal cross section; the distance between the si...

Embodiment 2

[0038] Step 1. Use vacuum electron beam welding to seal and weld one end of the oxygen-free copper sheath, and then put a tantalum rod with a quality purity of 99.95% and a diameter of Φ40mm into the oxygen-free tube with an outer diameter of Φ65.0mm and an inner diameter of Φ60.0mm In the copper sheath, vacuum electron beam welding is used to seal and weld the other end of the oxygen-free copper sheath with the tantalum rod to obtain a Cu-Ta single-core composite sheath; the tantalum in the Cu-Ta single-core composite sheath The mass percentage composition is 82.8%, and the balance is copper;

[0039] Step 2. Insulate the Cu-Ta single-core composite sheath described in step 1 at a temperature of 700°C for 4 hours, and then perform hot extrusion at an extrusion ratio of 7 to obtain Cu-Ta with a diameter of Φ24.6mm. Ta single core composite rod;

[0040] Step 3, drawing the Cu-Ta single-core composite rod described in step 2 for 47 passes to obtain a Cu-Ta single-core composit...

Embodiment 3

[0048] Step 1. Use vacuum electron beam welding to seal and weld one end of the oxygen-free copper sheath, and then put a tantalum rod with a quality purity of 99.95% and a diameter of Φ57mm into the oxygen-free In the copper sheath, vacuum electron beam welding is used to seal and weld the other end of the oxygen-free copper sheath with the tantalum rod to obtain a Cu-Ta single-core composite sheath; the tantalum in the Cu-Ta single-core composite sheath The mass percentage composition is 90.7%, and the balance is copper;

[0049] Step 2. Insulate the Cu-Ta single-core composite sheath described in step 1 at a temperature of 750°C for 2 hours, and then perform hot extrusion at an extrusion ratio of 6 to obtain Cu-Ta with a diameter of Φ26.5mm. Ta single core composite rod;

[0050]Step 3, drawing the Cu-Ta single-core composite rod described in step 2 for 59 passes to obtain a Cu-Ta single-core composite wire with a regular hexagonal cross section; the distance across the si...

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Abstract

The invention discloses a method for manufacturing a Cu-Ta multi-core composite wire rod. The method includes the steps that firstly, a Cu-Ta single-core composite sheath is manufactured; secondly, hot extrusion is performed; thirdly, a Cu-Ta single-core composite wire rod is obtained in a drawing mode; fourthly, straightening, sizing, cut-off, acid picking and drying are performed; fifthly, the Cu-Ta single-core composite wire rod is repeatedly assembled for 2-4 times in a bundling mode, and a first Cu-Ta multi-core composite wire rod is obtained; sixthly, the first Cu-Ta multi-core composite wire rod is repeatedly assembled for 2-4 times in a bundling mode, and therefore a second Cu-Ta multi-core composite wire rod is obtained; seventhly, the second Cu-Ta multi-core composite wire rod is assembled in a bundling mode and hot extruded, and therefore a Cu-Ta multi-core composite rod is obtained; eighthly, the Cu-Ta multi-core composite wire rod is obtained in a drawing mode. The composite wire rod is obtained through repeated bundling assembling and comprises billions-of-core continuous nanometer high-intensity Ta fiber, the average size of core wires is about dozens of nanometers, and a good Cu / Ta interface bonding effect is obtained in combination with heat treatment.

Description

technical field [0001] The invention belongs to the technical field of metal alloy material processing, and in particular relates to a preparation method of Cu-Ta multi-core composite wire. Background technique [0002] High-strength and high-conductivity copper-based composite materials are non-ferrous metal materials with excellent physical and mechanical properties. Among them, deformed copper-based composite materials are one of the research hotspots and development directions of high-strength and high-conductivity copper alloys, such as Cu-Ag, Cu- Composite materials such as Nb, Cu-Cr, Cu-Zr and Cu-Ta have been researched and prepared one after another, and are widely used in high pulse magnetic field conductor materials, transfer switches, electrical contactors, lead frames and electronic devices. With the continuous expansion of the application field of copper-based composite materials and the rapid growth of consumption, Cu-based composite materials have attracted mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00
Inventor 王鹏飞梁明徐晓燕李成山段颖焦高峰
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH