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Welding method of superconducting film material

A welding method and superconducting thin film technology, applied in the direction of connecting contact materials, connections, electrical components, etc., can solve the problems of performance degradation of superconducting strips, damage to YBCO layers, etc., to improve performance, improve bending performance and mechanical strength , The effect of reducing the current loss

Pending Publication Date: 2020-04-14
EASTERN SUPERCONDUCTOR SCI & TECH SUZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Bare strip welding is actually the welding between the silver-plated layer and the silver-plated layer. When the welding temperature is higher, the more silver dissolves in the brazing seam, an intermetallic compound will be generated, causing the YBCO layer to lose the protection of the silver layer. Then destroy the YBCO layer, which will eventually lead to a decrease in the performance of the welded superconducting strip

Method used

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  • Welding method of superconducting film material
  • Welding method of superconducting film material
  • Welding method of superconducting film material

Examples

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0033] An embodiment of a welding method of a superconducting thin film material of the present invention specifically includes the following steps:

[0034] S10, the surface of the superconducting bare strip is cleaned to remove impurities and oil stains on the surface of the superconducting bare strip, so as to facilitate the adhesion of the coating, enhance the weldability of the solder at the joint and the strip body 11, and also improve the mechanical properties of the welded joint Intensity, cleaning solutions such as alcohol or acetone can be selected for use during cleaning in this embodiment;

[0035] S11. The silver-plated layer of the bare superconducting strip covers t...

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Abstract

The invention discloses a welding method of a superconducting film material, which comprises the following steps that S1, a silver coating of a superconducting bare tape is covered with a plating layer, wherein the plating layer contains metal, and the resistivity of the metal is 10 <-8> omega.m magnitude or below; S2, bonding and fixing the welding parts of the adjacent superconducting bare tapes; and S3, placing the welding part under the conditions that the temperature ranges from 20 DEG C to 300 DEG C, and the pressure ranges from 0.02 MPa to 2 MPa, filling a joint with a welding flux, andobtaining the bare tape body. According to the invention, the silver coating can still maintain the original protection effect, so that a YBCO layer is not easy to damage, and the performance of thebare tape body after welding is improved.

Description

technical field [0001] The invention relates to the field of superconducting materials, in particular to a welding method for superconducting thin film materials. Background technique [0002] With the extensive research and application of superconducting technology in many fields, the requirements for the length of superconducting strips are getting higher and higher. At present, the length of superconducting strips can no longer meet the actual needs, and superconducting strip welding has become the trend of the situation. , superconducting bare strip welding can reduce the thickness of the joint, effectively increase the duty cycle of the energized conductor, beautify the appearance and become popular, which puts forward higher requirements for superconducting strip welding. [0003] Patent CN104167487A "ReBa 2 Cu 3 o 7-δ High-temperature superconducting thin-film strip connection process and its pressure heating system" and patent CN107799917A "a low-resistance connec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R4/68H01R43/02
CPCH01R4/68H01R43/02
Inventor 牛潇晔李青哲蔡渊谢义元程鹏
Owner EASTERN SUPERCONDUCTOR SCI & TECH SUZHOU CO LTD
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