Preparing technique of NbTiTa/Cu superconducting wire

A preparation process and technology for superconducting wire rods are applied in the field of NbTiTa/Cu superconducting wire rods, which can solve the problems of long NbTiTa/Cu preparation process, difficulty in realization, and high cost, and achieve the advantages of large-scale production and application, reduction of preparation difficulty, high cost, etc. cost reduction effect

Inactive Publication Date: 2008-01-23
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not difficult to conclude that the traditional NbTiTa/Cu preparation process is lengthy and complicated
In addition, since the smelting process of NbTiTa s

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0016] Example 1

[0017] The Nb47Ti plate with a thickness of 1.9mm and the Ta plate with a thickness of 0.11mm are alternately stacked, and the wire is cut into a cylinder of 50×180mm, which is pickled together with the copper cladding and the Nb barrier layer with an inner diameter of 51×180mm , and the first composite assembly was carried out after drying. The assembled composite jacket is vacuum welded and then hot isostatically pressed and extruded. The NbTiTa / Cu composite rod obtained after extrusion was pickled to remove the oxide layer on the surface of the composite body, and then the composite body was drawn into a hexagonal rod, and then the hexagonal rod was cut into 61 sections, followed by pickling. Use the hexagonal rod and the pickled copper cladding to assemble the second composite, vacuum-weld and extrude the assembled composite cladding, then pickle the extruded composite rod, and pull it out. To the hexagonal rod, cut the hexagonal rod into 78 pieces, ...

Example Embodiment

[0019] Example 2

[0020] The Nb47Ti plate with a thickness of 1.9mm and the Ta plate with a thickness of 0.18mm are alternately superimposed, and the wire is cut into a cylinder of 50×180mm, which is pickled together with the copper cladding and the Nb barrier layer with an inner diameter of 51×180mm , and the first composite assembly was carried out after drying. The assembled composite jacket is vacuum welded and then hot isostatically pressed and extruded. The NbTiTa / Cu composite rod obtained after extrusion was pickled to remove the oxide layer on the surface of the composite body, then the composite body was drawn into a hexagonal rod, and then the hexagonal rod was cut into 1003 sections, followed by pickling. Use the hexagonal rod and the pickled copper cladding for the second composite assembly, vacuum welding and sealing the assembled composite cladding, extruding, pulling the skin of the extruded composite rod, and finally by pulling The NbTiTa / Cu superconductin...

Example Embodiment

[0022] Example 3

[0023] Alternately superimpose Nb57Ti plates with a thickness of 1.9mm and Ta plates of 0.20mm, cut them into: 50×180mm cylinders, and pickle them together with a copper cladding and Nb barrier layer with an inner diameter of 51×180mm , and the first composite assembly was carried out after drying. The assembled composite jacket is vacuum welded and then hot isostatically pressed and extruded. The NbTiTa / Cu composite rod obtained after extrusion was pickled to remove the oxide layer on the surface of the composite body, and then the composite body was drawn into a hexagonal rod, and then the hexagonal rod was cut into 61 sections, followed by pickling. Use the hexagonal rod and the pickled copper cladding to assemble the second composite, vacuum-weld and extrude the assembled composite cladding, then pickle the extruded composite rod, and pull it out. To the hexagonal rod, cut the hexagonal rod into 78 pieces, pickling; carry out the third composite asse...

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Abstract

The invention discloses a preparation technique for a NbTiTa/Cu superconductive wire rod, which is characterized in that: in this technique, a NbTi alloy plate, a Ta plate and a Nb obstruction layer are assembled integrally in a composite after acid washing and cleaning; the NbTi alloy plate and the Ta plate are interlaced alternatively in a copper clad wrap and then processed via vacuum sealing, hot isostatic pressing and hot extrusion; the extruded composite will undergo secondary assembly, vacuum sealing and hot extrusion after acid washing, drawling and cutting; then, undergo ageing heat treatment and drawing, so as to make a NbTiTa/Cu superconductive wire rod with certain wire diameter, core diameter, core number and copper ratio, or; the composite with secondary extrusion will undergo third assembly, vacuum sealing and hot extrusion after acid washing, drawing and cutting; then, conduct ageing heat treatment and drawing for third composite to make NbTiTa/Cu superconductive wire rod. Therefore, the invention is able to simplify the preparation technique of NbTiTa/Cu superconductive wire rod, shorten the wire rod preparation period by 40 per cent and lower down the cost by 30 per cent.

Description

technical field [0001] The invention relates to a preparation process of a superconducting wire, in particular to a process for preparing a NbTiTa / Cu superconducting wire with good superconducting properties by using a NbTi alloy plate and a pure Ta plate. Background technique [0002] With the continuous development of science and technology and social economy, low-temperature superconducting materials such as NbTiTa, NbTi, and Nb3Sn will play an important role in solving energy problems, diagnosis and treatment of human diseases, and physics research. [0003] NbTiTa / Cu superconducting wire is mainly used to prepare high-field magnets. NbTiTa / Cu wire is an alloy superconductor with good plasticity. It is not only easy to process the wire, but also very convenient to prepare the magnet. At the same time, the performance of the NbTiTa / Cu superconducting wire will not degrade during use. The above advantages are not possessed by other superconducting wires, so the developmen...

Claims

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Application Information

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IPC IPC(8): H01B13/00H01B12/04H01B12/00
CPCY02E40/641Y02E40/64Y02E40/60
Inventor 马权陈自力卢亚锋周廉吴晓祖王忠俊
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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