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Construction of superconducting multi-core billet and method for manufacturing superconducting multi-core wires

A technology of superconducting blanks, applied in the field of physical structure of superconducting multi-core blanks, to achieve the effect of reducing manufacturing time and eliminating local concentration

Inactive Publication Date: 2012-07-25
SH COPPER PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Position deviation during winding is a serious problem in terms of magnetic field distribution

Method used

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  • Construction of superconducting multi-core billet and method for manufacturing superconducting multi-core wires
  • Construction of superconducting multi-core billet and method for manufacturing superconducting multi-core wires
  • Construction of superconducting multi-core billet and method for manufacturing superconducting multi-core wires

Examples

Experimental program
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Effect test

Embodiment approach 1

[0042] In an embodiment of the present invention, the multi-core superconducting blank is formed by preparing a plurality of vertical holes in a circular cross-section copper or copper alloy blank, wherein the vertical holes are filled with a superconducting material including Nb. The volume ratio of copper or copper alloy to the superconducting material used in the billet is called the copper ratio.

[0043] Typically, the customer sets requirements for the range of copper ratios (ie, the volume ratio of copper to NbTi), the diameter of the superconducting wire, the diameter of the superconducting filament, and other details. In most cases in this context, the manufacturer determines the detailed physical structure of the superconducting wire according to the requirements set by the customer. If you specify three parameters: wire diameter d, superconducting filament diameter d sc , Copper ratio m, then the number of divisions N is uniquely determined. Between them, the rela...

Embodiment approach 2

[0069] In the second embodiment, the number N of longitudinal holes on the inner layer of the blank 2 is determined to be a prime number. This embodiment applies a geometrically asymmetric structure based on prime numbers, the purpose of which is to determine the number of longitudinal holes on the inner layer, but this embodiment still uses a symmetrical structure in terms of plastic deformation. N 2 The reason for being a prime number is that the irregular deformation of the superconducting filament is suppressed during the drawing process.

[0070] Same as Embodiment 1, Embodiment 2 is applicable when the copper ratio is greater than 4. As in Embodiment 1, the number N of vertical holes on the inner layer 2 and the number N of longitudinal holes on the outer layer 1 The relationship between 2 =N 1 / 2 or N 1 / 4 or N 1 / 8 OK.

[0071] exist figure 2 In the illustrated embodiment, the longitudinal holes 3 are arranged in the outer concentric circles (D 2外 ) and inn...

Embodiment approach 3

[0089] In the third embodiment, longitudinal holes are prepared in the blank so that each longitudinal hole will be arranged on a layer of concentric circles concentric with the center of the blank, the number N of holes being 29. As in Embodiments 2 and 3, the longitudinal holes are drilled at equal intervals, ie at equal angles α. In this embodiment, where the number N is 29, the equal angle α is 360 / N, ie 12.4°.

[0090] exist Figure 3A and 3B Among them, the numeral symbol 1 denotes a superconducting multi-core blank, 2 denotes a copper or copper alloy blank, 3 denotes a vertical hole 3 prepared in the blank 1, 4 denotes a superconducting material inserted into the vertical hole 3, and 5 denotes a process by A superconducting multi-core wire obtained from a superconducting multi-core blank 1 is processed.

[0091] Figure 3A The structure in the case where N is 29, where N should preferably be an integer of 17 to 53, will be described. In addition, it is preferable t...

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Abstract

A physical construction of a superconducting multi-core billet is provided together with a method for manufacturing a superconducting multi-core wire to offer reduction of manufacturing time (cost) and low frequency of occurrence of wire break during diameter-reduction drawing. The superconducting multi-core billet by the present invention has such a construction that a plurality of vertical holes are made in a billet 2 of copper or copper alloy of circular cross-section; that the vertical holes are filled with a superconducting material 4 comprised of NbTi; that a copper-volume ratio, which is a ratio of the copper or the copper alloy to NbTi in volume, is not smaller than four; that the plurality of vertical holes are made in the billet so that each of the vertical holes will be arrayed at an equal spacing on each of two inner and outer layers concentric circles.

Description

technical field [0001] The present invention relates to a physical structure of a superconducting multi-core blank and a method for manufacturing a superconducting multi-core wire, wherein the structure of the superconducting multi-core blank of the present invention allows the compounded superconducting material to be processed into a shape that meets requirements filament. Background technique [0002] Superconducting wires have been applied to various fields because of their ability to transmit large currents without losing power or generating ferromagnetic fields. For example, the discovery of superconducting wires in the following new technology fields: the development of energy-saving systems by introducing superconducting systems into power systems such as generators and transmission cables; the development of new energy systems such as nuclear fusion and the occurrence of magnetohydrodynamics (MHD) and in the development of new technologies in the field of ferromagn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B12/10H01B13/00H01F6/00
CPCH01L39/2403H01L39/2406H01B12/10H01F6/06Y10T29/49014Y10T428/12361Y02E40/60H10N60/0128H10N60/0156
Inventor 笹冈高明木村守男樱井义博宫下克己古东博铃木洋一
Owner SH COPPER PROD CO LTD
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