A preparation method for improving the comprehensive performance of cu-nb composite wire
A technology for composite wire and comprehensive performance, which is applied in the field of preparation to improve the comprehensive performance of Cu-Nb composite wire, which can solve the problems of electrical conductivity decline and achieve the effect of weakening the decline of electrical conductivity
Inactive Publication Date: 2017-08-25
FUZHOU UNIV
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Problems solved by technology
However, there is a contradictory relationship between the strength and conductivity of Cu-Nb composite wires. Increasing the strength of the material is often accompanied by a decrease in conductivity. This contradictory relationship has become an important factor limiting the application of Cu-Nb composite wires.
Method used
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[0022] In the present invention, as Figure 1~3 As shown, a preparation method for improving the comprehensive performance of Cu-Nb composite wire comprises the following steps:
[0023] (1) Firstly select a pure Cu sleeve and a pure Nb rod for assembly, set the pure Cu sleeve outside the pure Nb rod, and place the pure Nb rod at the center of the pure Cu sleeve , followed by vacuum sealing, hot extrusion, and multi-pass cold drawing to obtain single Nb core Cu-Nb composite wire;
[0024] (2) Divide the single Nb core Cu-Nb composite wire obtained in step (1) into 55 equal parts along its length direction, and continue to select a pure Cu sleeve for assembly, and set the pure Cu sleeve at 55 equal parts. In addition to the single Nb core Cu-Nb composite wire, the 55 equal parts of the single Nb core Cu-Nb composite wire are arranged in a columnar body at the center of the pure Cu sleeve, and the columnar body is in the shape of a regular hexagonal honeycomb as a whole. Take ...
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Abstract
The invention relates to a Cu-Nb composite wire comprehensive performance improvement preparation method including the following steps: (1) a single Nb core Cu-Nb composite wire is prepared by assembling and other steps from one pure Cu pipe sleeve and one pure Nb bar; (2) the single Nb core Cu-Nb composite wire is divided into 55 equal parts, and a 55 Nb core Cu-Nb composite wire is prepared by assembling and other steps from the 55 equal parts and one pure Cu pipe sleeve; (3) a 55<2> Nb core Cu-Nb composite wire is prepared from the 55 Nb core Cu-Nb composite wire by repeating the step (2); (4) a 55<3> Nb core Cu-Nb composite wire is prepared from the 55<2> Nb core Cu-Nb composite wire by repeating the step (3); (5) the 55<3> Nb core Cu-Nb composite wire is divided into 85 equal parts, and a 85* 55<3> Nb core Cu-Nb composite wire is prepared by assembling and other steps from 85 equal parts of the 55<3> Nb core Cu-Nb composite wire, one pure Cu pipe sleeve, and one pure Cu bar; and (6) a 85<2>* 55<3> Nb core Cu-Nb composite wire is prepared by repeating the step (5) from the 85* 55<3> Nb core Cu-Nb composite wire. The Cu-Nb composite wire prepared by the method gives full play to the pure Cu high conductivity and multi-scale structure impact on performance, and weakens electrical conductivity reduction caused by the work hardening, so that the Cu-Nb composite wire well combine high conductivity and high strength.
Description
technical field [0001] The invention relates to a preparation method for improving the comprehensive performance of Cu-Nb composite wire. Background technique [0002] The Cu-Nb composite wire prepared by cluster drawing has broad application prospects in the fields of strong magnetic field construction, medicine and railway transportation because of its high strength and excellent electrical conductivity. However, there is a contradictory relationship between the strength and conductivity of Cu-Nb composite wires. Increasing the strength of the material is often accompanied by a decrease in conductivity. This contradictory relationship has become an important factor limiting the application of Cu-Nb composite wires. [0003] The high strength and excellent electrical conductivity of Cu-Nb microcomposite wires are closely related to the multi-scale structural properties of the nanofiber composite structure and matrix formed after large deformation drawing. At present, resea...
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IPC IPC(8): B21C37/04
CPCB21C37/04
Inventor 邓丽萍汪炳叔
Owner FUZHOU UNIV