A kind of assembly method of nbti multi-core superconducting billet

An assembly method and superconducting technology, applied in the usage of superconducting elements, superconducting devices, superconducting/high-conducting conductors, etc., can solve the problems of difficulty in passing NbTi hexagonal rods through oxygen-free copper tubes, time-consuming and labor-intensive losses, etc. Achieve wide applicability, reduce labor intensity and improve performance

Active Publication Date: 2021-04-20
西部超导材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the technical problem that it is very difficult to manually pass the NbTi hexagonal rod through the oxygen-free copper tube in the prior art, the present invention provides a method for assembling the NbTi multi-core superconducting ingot. The mandrel is pulled out from the copper tube for assembly, which solves the problem of difficulty, time-consuming, laborious and high loss of NbTi hexagonal rods passing through the oxygen-free copper tube, so that the NbTi hexagonal rod larger than 3m can easily pass through the oxygen-free copper tube, and the traction method adopted The tooling can accurately and reliably pull the NbTi hexagonal rod through the oxygen-free copper tube, fix it reliably and will not damage the NbTi hexagonal rod, and has wide applicability in the field of multi-core superconducting ingot assembly

Method used

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  • A kind of assembly method of nbti multi-core superconducting billet
  • A kind of assembly method of nbti multi-core superconducting billet
  • A kind of assembly method of nbti multi-core superconducting billet

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Embodiment 1

[0028] Embodiment 1: Assembly method of NbTi multi-core superconducting billet of the present invention

[0029] The invention provides a method for assembling a NbTi multi-core superconducting ingot, said method comprising the following steps:

[0030] (1) Clean the oxygen-free copper tube 6 with a diameter of Φ30-70mm for assembly, a tube wall thickness of 3-10mm, and a length of 3-10m, and take a hexagonal NbTi single mandrel 4 with a distance between H3.0-H9.0mm After cleaning.

[0031] (2) Place the cleaned oxygen-free copper tube 6 on the working platform 8, arrange the cleaned hexagonal NbTi single mandrel 4 neatly according to the designed cross-section, and fix it with cable ties.

[0032] (3) The 100-200 mm head portion of the neatly arranged NbTi single mandrel 4 is covered with a copper tube 16 of a suitable size for swaging to form the head.

[0033] (4) Pass the traction tool 5 through the oxygen-free copper tube 6 for assembly, connect the copper tube 16 socke...

Embodiment 2

[0036] Embodiment 2: The assembly method of the NbTi multi-core superconducting ingot of the present invention

[0037] Clean the hexagonal NbTi single mandrel 4 with a diameter of H8.0mm and a length of 6m and the oxygen-free copper tube 6 with a diameter of Φ52mm, a wall thickness of 5mm and a length of 6m. After cleaning, the oxygen-free copper tube 6 is placed in the working on platform 8. Then the NbTi single mandrel 4 with a diameter of H8.0mm and a length of 6m is attached according to the instructions. figure 2 Place the cross-sectional structure shown, and fix it with plastic cable ties after placing it neatly. The head of the NbTi single mandrel 4 is covered with a copper tube 16 with a length of 200 mm, a diameter of 48 mm, and a wall thickness of 3 mm. Machine rotary forging NbTi single mandrel with 4 heads covered with 16 parts of copper tube to Φ35mm. Extend the traction tool 5 through the oxygen-free copper tube 6, and clamp the part of the copper tube 16 tha...

Embodiment 3

[0038] Embodiment 3: The method for placing the oxygen-free copper tube and the NbTi single core rod on the workbench of the present invention

[0039] As attached to the manual image 3 As shown, in the present invention, there are two working platforms 8, and the NbTi single mandrel 4 that is neatly placed and the length of the head cover is 100-200m copper pipe 16 for swaging the head is placed on a working platform 8, without The oxygen copper pipe 6 is placed on another working platform 8 .

[0040] Preferably, two brackets 15 are provided on the working platform 8 in the present invention, and the neatly arranged NbTi single mandrels 4 and oxygen-free copper tubes 6 are respectively placed on the brackets 15 on the respective working platforms 8 .

[0041] More preferably, the bottom of the four corners of the working platform 8 of the present invention has height-adjusting outriggers, a level is provided on the working platform 8 , and an infrared height correction mec...

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Abstract

The invention discloses a method for composite assembly of multi-core superconducting ingots. In the method, the single mandrel and the oxygen-free copper tube are cleaned and the oxygen-free copper tube is cleaned and then placed on the working platform. The head is covered with a copper tube, and the head of the NbTi single mandrel is swaged by a rotary forging machine, and the traction tool is extended through the copper tube to clamp the part of the NbTi single mandrel head covering the copper tube, and the tractor is turned on to pull the NbTi single mandrel from the After the copper tube is pulled out, the multi-core superconducting ingot is obtained by swaging as a whole. The assembly method of the present invention, the traction tooling can stably and reliably fix the NbTi hexagonal rod, and the labor intensity is reduced by using the tractor, and the force is stable, reliable and uniform during the passing process. , improved the performance of NbTi multi-core superconducting ingot, so that the broken core rate is lower than 0.5%, the non-uniformity of wire current-carrying performance along the length direction is reduced to less than 3%, and the tensile strength is increased by 5%. In NbTi The multi-core superconducting ingot assembly field has wide applicability.

Description

technical field [0001] The invention belongs to the technical field of superconducting material processing, and relates to a method for composite assembly of multi-core superconducting ingots. Background technique [0002] The traditional preparation of NbTi / Cu superconducting wire is mainly the secondary assembly extrusion method, that is, the NbTi rod is combined with the copper matrix, and then extruded and drawn to form a single-core NbTi hexagonal rod, and then the NbTi hexagonal rod and the Cu hexagonal rod are bundled and placed Put it into the circular copper sheath, and use different specifications of circular copper rods to fill the gap between the hexagonal rod and the circular copper sheath, and compound to form a multi-core NbTi / Cu composite rod. The multi-core NbTi / Cu superconducting wire is made by extrusion and drawing. Although the technology of this preparation method is relatively mature, the work efficiency is low due to the many procedures. At the same ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00H01B12/02
CPCH01B12/02H01B13/00Y02E40/60
Inventor 张平祥严凌霄闫凯鹃郭强刘建伟李建峰刘向宏冯勇
Owner 西部超导材料科技股份有限公司
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