Preparation method for Nb-Zr alloy/Cu multi-core composite wire

A technology of composite wire and alloy wire, which is applied in the direction of cable/conductor manufacturing, electrical components, circuits, etc., can solve the problems of shortened wire life, easy corrosion and oxidation of core wire, etc., and achieves reduced composite times, good compactness, and not easy to twist and sliding effect

Active Publication Date: 2016-08-17
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented method allows for creating multiple cores within one metal shell without compromising its properties or making them difficult to work together properly. It achieves this by combining different materials such as copper (CN) and zirconium nitride (NO2) onto each other while maintaining their original shape when drawn out from molten state. By doing these processes at specific temperatures and times, they produce strong yet less expensive composites made up mostly of metals like silver and gold. Additionally, certain alloys have better stability compared to traditional methods due to increased atomic size and decreased surface area per unit volume. Overall, this new technique makes manufacturing multimode fibers faster and easier.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the quality and efficiency of producing highly integrated alloys containing fine metallurgyte particles called Zr or Ce instead of conventional ones due to their superior property compared to usual elements. Specifically, current methods involve forming these powders into wires without any special treatment, resulting in decreased overall durability over time. To overcome this issue, there was developed a new method involving making certain types of nanoparticles mixed together at specific ratios to create a strong yet ductilient composition.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation method of the present embodiment Nb-Zr alloy / Cu multi-core composite wire comprises the following steps:

[0026] Step 1. Melting and pouring: Mix Nb and Zr evenly at a mass ratio of 100:4, place them in the crucible of an arc induction furnace, melt for 3 hours at a temperature of 2500°C, and pour them under water bath cooling conditions after the two are fully melted Shaped to obtain a Nb-Zr alloy ingot with a cross-sectional diameter of 120 mm; the Nb and Zr are solid raw materials, and the Nb in this embodiment is preferably allocated in the form of Nb blocks, Nb particles or Nb powder. Zr is preferably added in the form of Zr blocks, Zr granules or Zr powder, and the casting time is 40s;

[0027] Step 2, hot extrusion: heat the Nb-Zr alloy ingot described in step 1 at a temperature of 800° C. for 4 hours, and then carry out extrusion processing under the condition of an extrusion ratio of 9 to obtain a cross-sectional diameter of 40mm Nb-Zr alloy ba

Embodiment 2

[0034] The preparation method of the present embodiment Nb-Zr alloy / Cu multi-core composite wire comprises the following steps:

[0035] Step 1. Melting and pouring: Mix Nb and Zr evenly at a mass ratio of 100:5, place them in the crucible of an arc induction furnace, and melt them at a temperature of 2500°C for 2.5 hours. After the two are fully melted, cool them in a water bath Casting molding to obtain a Nb-Zr alloy ingot with a cross-sectional diameter of 100mm; the Nb and Zr are both solid raw materials, and the Nb described in this embodiment is preferably allocated in the form of Nb blocks, Nb granules or Nb powder. The Zr is preferably added in the form of Zr blocks, Zr granules or Zr powder, and the casting time is 35s;

[0036] Step 2, hot extrusion: heat the Nb-Zr alloy ingot described in step 1 at a temperature of 700°C for 3.5 hours, and then carry out extrusion processing under the condition of an extrusion ratio of 9.8 to obtain a cross-sectional diameter 32mm N

Embodiment 3

[0043] The preparation method of the present embodiment Nb-Zr alloy / Cu multi-core composite wire comprises the following steps:

[0044] Step 1. Melting and pouring: Mix Nb and Zr evenly at a mass ratio of 100:6, place them in the crucible of an arc induction furnace, melt for 2 hours at a temperature of 2500°C, and pour them under water bath cooling conditions after the two are fully melted Shaped to obtain a Nb-Zr alloy ingot with a cross-sectional diameter of 80 mm; the Nb and Zr are solid raw materials, and the Nb in this embodiment is preferably allocated in the form of Nb blocks, Nb granules or Nb powder. Zr is preferably added in the form of Zr blocks, Zr particles or Zr powder, and the casting time is 50s;

[0045] Step 2, hot extrusion: heat the Nb-Zr alloy ingot described in step 1 at a temperature of 700° C. for 6 hours, and then carry out extrusion processing under the condition of an extrusion ratio of 8.4 to obtain a cross-sectional diameter of 28mm Nb-Zr alloy b

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Abstract

The invention discloses a preparation method for an Nb-Zr alloy/Cu multi-core composite wire. The preparation method includes the following steps that firstly, Nb and Zr are melted to be cast into an Nb-Zr alloy cast ingot; secondly, hot extrusion is conducted, and an Nb-Zr alloy bar is obtained; thirdly, drawing is conducted, and an Nb-Zr alloy wire is obtained; fourthly, pretreatment is conducted; fifthly, primary compounding is conducted, and a pretreated Nb-Zr alloy/Cu primary composite wire is obtained; and sixthly, secondary compounding is conducted, and the Nb-Zr alloy/Cu multi-core composite wire is obtained. By means of the preparation method, due to electric arc melting and with the combination of a bundle drawing technology, preparation of the multi-core composite wire where core wires are evenly distributed and the organization structure is stable is successfully achieved; and the wire prepared through the method has high strength and high conductivity and also has good oxidation resisting capability and excellent corrosion resisting capability.

Description

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Claims

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Application Information

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Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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