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Preparation method of reinforced Cu-Nb composite wire

A composite wire, cu-nb technology, applied in the direction of metal rolling, etc., can solve the problems of decreased electrical conductivity, inapplicable, difficult to break through 1GPa, etc., to achieve increased elongation, improved quality and performance, and obvious core wire thinning Effect

Active Publication Date: 2020-12-01
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the Cu-Nb composite long wire prepared by cluster drawing technology is close to the theoretical processing limit, and the tensile strength has been maintained at about 950MPa, and it is difficult to break through 1GPa
Studies have shown that the tensile strength of the wire reaches more than 1GPa, but the electrical conductivity drops significantly (below 65% IACS), which makes it impossible to apply

Method used

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  • Preparation method of reinforced Cu-Nb composite wire
  • Preparation method of reinforced Cu-Nb composite wire
  • Preparation method of reinforced Cu-Nb composite wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment includes the following steps:

[0027] Step 1. The Cu-Nb tertiary composite wire prepared by the cluster drawing method is plastically drawn to a diameter of 7.74 mm, and then annealed at a temperature of 700 ° C for 4 hours;

[0028]Step 2. Carrying out continuous multi-roll pass cold rolling to the Cu-Nb three-time composite wire rod after the annealing treatment in step 1 to obtain the Cu-Nb composite wire rod intermediate; the rolling deformation of the multi-roll pass rolling 60%, the speed is 0.1m / s;

[0029] Step 3. Plastic drawing processing is carried out on the Cu-Nb composite wire rod intermediate obtained in step 2 to obtain a reinforced Cu-Nb composite wire rod with a diameter of 2.02 mm; the pass processing rate of the plastic drawing processing is 5% to 5%. 10%.

[0030] After testing, the room temperature tensile strength of the strengthened Cu-Nb composite wire prepared in this example is 1038MPa, which is 5% higher than that of the Cu...

Embodiment 2

[0035] This embodiment includes the following steps:

[0036] Step 1. The Cu-Nb tertiary composite wire prepared by the cluster drawing method is plastically drawn to a diameter of 7.74 mm, and then annealed at a temperature of 780° C. for 4 hours;

[0037] Step 2. Carrying out continuous multi-roll pass cold rolling to the Cu-Nb three-time composite wire rod after the annealing treatment in step 1 to obtain the Cu-Nb composite wire rod intermediate; the rolling deformation of the multi-roll pass rolling 60%, the speed is 0.1m / s;

[0038] Step 3. Plastic drawing processing is carried out on the Cu-Nb composite wire rod intermediate obtained in step 2 to obtain a reinforced Cu-Nb composite wire rod with a diameter of 2.02 mm; the pass processing rate of the plastic drawing processing is 5% to 5%. 10%.

[0039] After testing, the room temperature tensile strength of the strengthened Cu-Nb composite wire prepared in this example is 891MPa, which is 4% higher than that of the Cu...

Embodiment 3

[0041] This embodiment includes the following steps:

[0042] Step 1. The Cu-Nb tertiary composite wire prepared by the cluster drawing method is plastically drawn to a diameter of 8.66 mm, and then annealed at a temperature of 700 ° C for 4 hours;

[0043] Step 2. Carrying out continuous multi-roll pass cold rolling to the Cu-Nb three-time composite wire rod after the annealing treatment in step 1 to obtain the Cu-Nb composite wire rod intermediate; the rolling deformation of the multi-roll pass rolling 70%, the speed is 0.3m / s;

[0044] Step 3. Plastic drawing processing is carried out on the Cu-Nb composite wire rod intermediate obtained in step 2 to obtain a reinforced Cu-Nb composite wire rod with a diameter of 2.02 mm; the pass processing rate of the plastic drawing processing is 5% to 5%. 10%.

[0045] After testing, the room temperature tensile strength of the reinforced Cu-Nb composite wire prepared in this example is 1096MPa, which is 11% higher than that of the Cu...

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Abstract

The invention discloses a preparation method of a reinforced Cu-Nb composite wire. The method comprises the following steps: 1, carrying out plastic drawing processing on a Cu-Nb three-time compositewire prepared by adopting a bundling drawing method, and then carrying out annealing treatment; 2, carrying out continuous multi-roll pass rolling on the annealed Cu-Nb three-time composite wire to obtain a Cu-Nb composite wire intermediate; and 3, carrying out plastic drawing processing on the Cu-Nb composite wire intermediate to obtain the reinforced Cu-Nb composite wire. According to the preparation method, a multi-roll pass rolling process is adopted for continuous rolling; the longitudinal deformation of the Cu-Nb three-time composite wire is promoted. Compared with the prior art, the plastic deformation is promoted to be improved, the plastic deformation amount is increased, the obtained reinforced Cu-Nb composite wire is more uniform in core wire distribution and deformation, and more obvious in core wire refinement, plastic deformation capacity is enhanced, the quality and performance of the reinforced Cu-Nb composite wire are improved, good matching of the mechanical propertyand the conductivity is achieved, and the engineering application requirement is met.

Description

technical field [0001] The invention belongs to the technical field of composite wire preparation, and in particular relates to a preparation method for strengthening Cu-Nb composite wire. Background technique [0002] In the design and experiment of the pulse magnet device and the electromagnetic gun device, one of the biggest difficulties is the problem of the magnetic field force. When the current passes through the winding material in the magnet, a strong Lorentz force will be generated, and a large amount of Joules will be released at the same time. heat, which requires the tensile strength of the winding material to be high enough, and at the same time to match good conductivity, otherwise the pulse magnet conductor material is easily destroyed. Therefore, it is necessary to choose a magnet winding material with good mechanical properties and electrical conductivity One of the keys to the pulsed strong magnetic field. Theory shows that when the pulsed high magnetic fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/18B21B3/00C22F1/08
CPCB21B1/18B21B3/00C22F1/08B21B2003/005
Inventor 王鹏飞梁明贾佳林冯建情徐晓燕段颖李成山张平祥
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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