Method for increasing interlayer binding force of high-temperature superconducting narrow-headed wire

Abstract

The invention relates to a method for increasing the interlayer binding force of a superconducting narrow headed wire. The method comprises the following steps: S1, stacking a superconducting strip and other metal strips which are equal in width, and then tinning and packaging the stacked superconducting strip and other metal strips into a high-temperature superconducting narrow headed wire through a tinning furnace; S2, punching holes in the surface of the narrow-headed wire obtained in the step S1, wherein the holes are through holes; S3, re-packaging the through holes of the narrow pile lines obtained in the step S2. According to the invention, a tin-plated packaging mode is adopted after the narrow headed wire is punched, and a'soldering tin column 'is formed by penetrating through all upper and lower layers of the narrow headed wire, so the weight and the size of the narrow headed wire are not influenced, the manufacturing cost is not greatly increased, and the feasibility is provided for practical engineering application; in mechanical operations of twisting, bending and the like, compared with a metal sheath, the soldering tin column is smaller in size, higher in toughness and capable of better meeting application requirements under working conditions.

Description

technical field [0001] The invention belongs to the technical field of superconducting technology, and in particular relates to a method for increasing the binding force between layers of high-temperature superconducting narrow stack wires. Background technique [0002] Since the discovery of high-temperature superconducting tape, its development and production have achieved remarkable results. At present, its mass production has been basically realized. Although the high-temperature superconducting tape has a current-carrying capacity far exceeding that of conventional conductors, the preparation of a single high-temperature superconducting wire still requires the combination of multiple high-temperature superconducting tapes by stacking to achieve better carrying capacity. flow capacity and higher physical strength. [0003] Therefore, in order to meet the above requirements, the "high-temperature superconducting narrow stack line" realizes stacking multiple superconduct...

AI Technical Summary

Problems solved by technology

The metal-sheathed high-temperature superconducting wire obtained by the preparation method is twisted and the internal strips are tightly bonded without deformation, and the ratio of its critical current to the critical current of the superconducting wire before armoring is higher than 95%, which solves the existing problem The superconducting strips of superconducting wires cannot meet the technical problem of lateral twisting due to insufficient stacking bonding force; however, this patent describes the process of using metal-clad superconducting stacked wires to achieve enhanced bonding force. The width of the superconducting tape varies from 40mm to 100mm; because it requires an additional metal sheath, the effect is not obvious for the narrower width of the superconducting tape

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