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Preparation method of ultrafine-core superconducting wire

A technology of superconducting wires and core wires, applied in the usage of superconducting elements, superconducting devices, superconducting/high-conducting conductors, etc., can solve problems such as quenching, and achieve low AC loss and good stress/strain tolerance Good characteristics and stability

Active Publication Date: 2014-01-29
西部超导材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of ultra-fine core wire superconducting wire, which solves the problem of "quench" caused by "AC loss" in the operation process of superconducting magnets in the prior art, and improves the superconductivity. Thermal stability of the wire

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Assembly and sealing: 3,000 pieces of Cu / Nb / Al composite rods with a length of 350.0mm, a distance across sides of 2.0mm, and a regular hexagonal cross-section are packed into the first copper-clad casing with a wall thickness of 11.0mm at one time, and then placed in a vacuum environment Next, the electron beam welding method is used to seal the first copper-clad casing to obtain a composite ingot; wherein, the Cu / Nb / Al composite rod is made by the following steps: the Al rod is put into the Nb tube, wherein the Al rod and the Nb tube The ratio of the cross-sectional area is 1:3, the Nb tube is sealed and then packed into the Cu tube, welded and sealed, and then multi-pass drawing processing is carried out with a deformation rate of 10% per pass and a speed of 5 meters per minute; The thickness of the Cu tube is 0.1 times the thickness of the Nb tube, and the outer diameter of the Nb tube is twice the inner diameter;

[0018] Hot extrusion processing: The composite ing...

Embodiment 2

[0025] Assembly and sealing: Assemble 1,000 Cu / Nb / Al composite rods with a length of 500.0mm, a distance across sides of 5.0mm, and a regular hexagonal cross-section into the first copper-clad casing with a wall thickness of 11.0mm, and then in a vacuum environment Next, the electron beam welding method is used to seal the first copper-clad casing to obtain a composite ingot; wherein, the Cu / Nb / Al composite rod is made by the following steps: the Al-0.1%Cu rod (the amount of Al and Cu substances ratio of 1000:1) into the Nb tube, wherein the ratio of the cross-sectional area of ​​the Al-0.1% Cu rod to the Nb tube is 1:3, the Nb tube is sealed and then put into the Cu tube, welded and sealed, and then each 20% deformation rate and a speed of 10 meters per minute are drawn for multiple passes; the thickness of the Cu tube is 1 times the thickness of the Nb tube, and the outer diameter of the Nb tube is twice the inner diameter;

[0026] Hot extrusion processing: The composite in...

Embodiment 3

[0033] Assembly and sealing: Assemble 2,000 Cu / Nb / Al composite rods with a length of 300.0mm, a distance across sides of 3.60mm, and a regular hexagonal cross-section into the first copper-clad casing with a wall thickness of 11.0mm, and then in a vacuum environment Next, the electron beam welding method is used to seal the first copper-clad casing to obtain a composite ingot; wherein, the Cu / Nb / Al composite rod is made by the following steps: the Al-5%Ag rod (Al element and Ag element The ratio of the amount of substance is 20:1) into the Nb tube, wherein the ratio of the cross-sectional area of ​​the Al-5%Ag rod to the Nb tube is 1:3, the Nb tube is sealed and then put into the Cu tube, welded and sealed, and then Multi-pass drawing processing is carried out with a deformation rate of 15% per pass and a rate of 5 meters per minute; the thickness of the Cu tube is twice the thickness of the Nb tube, and the outer diameter of the Nb tube is twice the inner diameter;

[0034] H...

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Abstract

The invention relates to the field of superconducting materials, in particular to a preparation method of an ultrafine-core superconducting wire. The preparation method comprises the following steps of: assembling and sealing, hot extruding, manufacturing sub components, manufacturing and secondarily assembling a composite rod, drawing the composite rod, thermally treating the composite rod, etc. The quantity of total core wires of the superconducting wire reaches 106-107 through processes of double assembly of large quantities of core wires, hot extrusion, cold drawing, etc., Cu with good electrical / thermal conducting performance is used as a stable base body, and an Nb3Al superconducting wire with extremely low AC loss and extremely good stability is obtained.

Description

technical field [0001] The invention relates to a method for preparing a wire, in particular to a method for preparing a superconducting wire. Background technique [0002] Fully superconducting controllable magnetic confinement thermonuclear fusion energy (tokamak) power generation technology is one of the strategic new energy technologies for the sustainable development of mankind in the future. It is precisely because of the advantages of abundant resources and environmental friendliness that controllable nuclear fusion energy is recognized as the most effective ideal energy source that is most likely to solve the future global energy crisis and promote the sustainable development of human society. At present, the launch of the International Thermonuclear Experimental Reactor Program (ITER) participated by many countries is of great significance to promote the development of basic science and engineering technology of controllable fusion energy. In November 2006, my count...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00H01B12/00
CPCY02E40/64Y02E40/60
Inventor 潘熙锋闫果王大友李超刘向宏冯勇张平祥
Owner 西部超导材料科技股份有限公司
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