Method for preparing high temperature super conductive conductor

A high-temperature superconductivity and wire technology, which is applied in the usage of superconductor elements, the manufacture/processing of superconductor devices, superconductivity/high-conductivity conductors, etc., to reduce surface defects, improve uniformity, and shorten the wire drawing cycle.

Inactive Publication Date: 2007-10-10
INNOVA SUPERCONDUCTOR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems encountered in the actual production process of the above-mentioned high-temperature supercond

Method used

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  • Method for preparing high temperature super conductive conductor
  • Method for preparing high temperature super conductive conductor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] As shown in Figure 1, the superconducting multi-core wire 1 is drawn to φ18mm, and then it is set into a copper tube 2 of φ21 / 19mm, and the two ends of the copper tube use a copper plug 3 with an outer diameter of φ17mm and an outer diameter of The copper plug 4 of φ 21mm is closed. The length of the copper tube is 80 mm longer than that of the superconducting multi-core wire 1, and the length of the copper plugs 3 and 4 is 35 mm. The packaged composite pipe is drawn. The drawing process uses a multi-pass continuous drawing process. The annealing temperature is 500 ° C. The total area reduction rate between the two annealings is 80%, and the single-pass area reduction rate is 18%. %, the annealing speed is 5m / min. The final drawing size of the composite pipe is φ2.1mm, and its cross-section is shown in Figure 2, where 1 is a superconducting multi-core wire and 2 is a copper tube.

Embodiment 2

[0021] As shown in Figure 1, the φ16mm superconducting multi-core wire 1 is set into the φ35.5 / 17mm aluminum tube 2, and the two ends of the aluminum tube use aluminum plugs 3 with an outer diameter of φ15mm and copper plugs with an outer diameter of φ35.5mm The plug 4 is closed. The length of the aluminum tube is 100 mm longer than that of the superconducting multi-core wire, and the length of the aluminum plugs 3 and 4 is 45 mm. The packaged composite pipe is drawn. The drawing process uses a multi-pass continuous drawing process. The annealing temperature is 500°C. The total area reduction rate between the two annealings is 75%, and the single-pass area reduction rate is 25%, the annealing speed is 10m / min, the aluminum layer is removed by corrosion after drawing to φ5mm, and then the drawing is continued, and the final drawing size is φ1.4mm.

Embodiment 3

[0023] As shown in Figure 1, the φ16mm superconducting multi-core wire 1 is set into the φ28 / 17mm iron pipe 2, and the two ends of the iron pipe are closed with an iron plug 3 with an outer diameter of φ15mm and an iron plug 4 with an outer diameter of φ28mm. The length of the iron pipe is 200mm longer than that of the superconducting multi-core wire, and the length of the iron plugs 3 and 4 is 95mm. The packaged composite pipe is drawn. The drawing process uses a multi-pass continuous drawing process. The annealing temperature is 550°C. The total area reduction rate between the two annealings is 60%, and the single-pass area reduction rate is 15%, the annealing speed is 4m / min, the aluminum layer is removed by corrosion after drawing to φ5mm, and then the drawing is continued, and the final drawing size is φ1.4mm.

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Abstract

Characters of the disclosed preparation method are that before high-temperature superconductor wire is drawn, following procedures are included: loading wire into metallic sheath; sealing metallic sheath. Using the method can raise efficiency and rate of finished products of producing superconducting wires in Bi series effectively.

Description

technical field [0001] The invention relates to a high-temperature superconducting wire, in particular to a method capable of producing high-temperature superconducting wire with high efficiency and high quality. Background technique [0002] As the only superconducting wire in the world that can realize industrial production, Bi-based high-temperature superconducting wire occupies an important position in the world's superconducting field. The World Bank predicts that by 2020, the global superconducting industry will generate a market of about 244 billion US dollars. However, the price of Bi-based superconducting wires is relatively expensive at present, which is an unfavorable factor for the development of civil superconducting products. Therefore, improving the production efficiency and yield of Bi-based superconducting wires is an important way to reduce the cost of Bi-based superconducting wires. [0003] In the actual production process of high-temperature supercondu...

Claims

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Application Information

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IPC IPC(8): H01B13/00H01B12/00H01L39/24
CPCY02E40/64Y02E40/60H02J50/10
Inventor 韩冰
Owner INNOVA SUPERCONDUCTOR TECH
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