Welding and packaging integrated method for high-temperature superconducting tape

A high-temperature superconducting tape, welding and packaging technology, applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of uneven surface, low joint strength, thickness difference, etc., to meet the preparation requirements, uniform thickness, The effect of smooth appearance

Inactive Publication Date: 2020-09-29
SHANGHAI SHANGCHUANG SUPERCONDUCTING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It mainly solves the technical problems such as low joint strength, thickness difference between the joint and the original strip, uneven surface, poor mechanical properties and bending performance existing in the existing high-temperature superconducting tape after packaging

Method used

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  • Welding and packaging integrated method for high-temperature superconducting tape
  • Welding and packaging integrated method for high-temperature superconducting tape
  • Welding and packaging integrated method for high-temperature superconducting tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1, with reference to figure 1 , an integrated method for welding and packaging high-temperature superconducting tapes, the superconducting tape 13 produced by the method includes a tape A1 part, a bridge structure joint 2 and a tape B14 part. Its production includes the following steps: Step 1, corroding the superconducting surface side of one end of the superconducting core tape A5 (covered with the superconducting layer 4), the length is 1-3 cm, and the corrosion thickness is 1 / 2 of the thickness of the superconducting core tape, such as figure 2 and image 3 The corroded surface 15 on the side of the superconducting surface at the end of the superconducting core ribbon A is shown. After the corrosion is completed, cut the corroded surface 15 on the superconducting surface side at the end of the superconducting core strip A so that its length is less than 2mm; after corrosion, the Hastelloy surface is exposed. In addition, the corroded surface 15 on the ...

Embodiment 2

[0037] Example 2, the high-temperature melting point solder sheet 7 is made of Sn-Ag-Cu alloy sheet, the upper packaging layer 3 and the lower packaging layer 12 are made of pure copper, and the superconducting core tape A5, superconducting core tape B10 and superconducting core tape C6 are made of Copper-coated superconducting tape, the rest are the same as in Embodiment 1.

Embodiment 3

[0038] Embodiment 3, the high-temperature melting point solder sheet 7 is made of Sn-Ag-Cu alloy sheet, the material of the upper packaging layer 3 and the lower packaging layer 12 is made of brass, and the superconducting core tape A5, the superconducting core tape B10 and the superconducting core tape C6 are made of Copper-coated superconducting tape, the rest are the same as in Embodiment 1.

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PUM

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Abstract

The invention provides a welding and packaging integrated method for a high-temperature superconducting tape. The welding and packaging integrated method mainly solves the technical problems that thestrength of a joint welded after the existing high-temperature superconducting tape is packaged is lower, the thickness difference between the joint and the original tape is large, the surface is uneven, the mechanical property and the bending property are poorer, and the like. According to the technical scheme, the welding and packaging integrated method comprises the following steps that a, a superconducting core tape A and a superconducting core tape B are welded together in a resistance spot welding or metal ultrasonic spot welding mode; b, the superconducting core tape C is uniformly brazing at the joint of the superconducting core tape A and the superconducting core tape B by adopting a high-melting-point solder sheet; and c, an upper packaging layer, a superconducting core tape partand a lower packaging layer are packaged together by adopting a soldering tin lamination packaging device to form the superconducting tape with an interlayer structure. The method is suitable for industrial production of second-generation high-temperature superconducting tapes.

Description

technical field [0001] The invention relates to welding and packaging of superconducting strips, in particular to an integrated method for welding and packaging high-temperature superconducting strips. Background technique [0002] Since the discovery of Y-Ba-Cu-O (YBCO) in 1987 for more than 30 years, RE-Ba-Cu-O (REBCO, RE = rare earth elements) Superconductors have been greatly developed, and the length of the preparation has reached hundreds of meters, or even thousands of meters. be applied in. [0003] High-temperature superconducting tapes are more and more widely used in power transmission (such as winding superconducting cables), large magnets and superconducting motors, but at the same time, the requirements for high-temperature superconducting tapes are also getting higher and higher. Existing The processing technology can provide high-temperature superconducting strips on the order of hundreds of meters to kilometers, which obviously cannot meet the length requi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/00B23K1/06
CPCB23K1/0004B23K1/06
Inventor 张永军蔡传兵陆齐张轩孙佳阳胡宏伟梁飞
Owner SHANGHAI SHANGCHUANG SUPERCONDUCTING TECH CO LTD
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