Short-flow preparation method for Cu-Nb composite material

A composite material and short-process technology, which is applied in the field of metal matrix composite material preparation, can solve the problems of high cost, long preparation cycle, unfavorable industrial production, etc., and achieve the effect of stable performance, high strength and strong practicability

Inactive Publication Date: 2011-08-31
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has a long preparation cycle and high cost, which is not conducive to industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Draw the Cu / Nb single core wire with a diameter of Φ30.0mm, the processing rate of each pass is 20%, and when the diameter is drawn to Φ8.0mm (the total processing rate of drawing is 93%), the intermediate Annealing, the annealing system is 500 ℃ for 1h, and then continue to draw until the diameter is Φ2.0mm, straighten the drawn Cu / Nb single core wire on the wire straightening machine, and then straighten the Cu / Nb single core wire after straightening Nb single core wire is cut to length;

[0024] (2) pickling the oxygen-free copper tube of Φ32mm×2mm×1000mm and 61 Cu / Nb single core wires cut to length in step (1) in dilute nitric acid with a volume percentage of 20%, and drying them separately after dehydration dry; then 61 Cu / Nb single-core wires after drying are assembled into the oxygen-free copper tube after drying to obtain a Cu-Nb primary composite rod;

[0025] (3) Drawing the Cu-Nb primary composite rod described in step (2), the pass processing rate is 20...

Embodiment 2

[0029] (1) Draw the Cu / Nb single core wire with a diameter of Φ40.0mm, the processing rate of each pass is 15%, and the intermediate drawing is carried out when the diameter is Φ20.0mm (total processing rate of drawing is 75%) Annealing, the annealing system is 600 ° C for 2 hours, and then continue to draw until the diameter is Φ2.0mm, straighten the drawn Cu / Nb single core wire on the wire straightening machine, and then straighten the Cu / Nb single core wire after straightening Nb single core wire is cut to length;

[0030] (2) Pickling the oxygen-free copper tube of Φ40mm×3mm×1000mm and 85 Cu / Nb single core wires cut to length in step (1) in dilute nitric acid with a volume percentage of 35%, and drying them separately after dehydration dry; then 85 Cu / Nb single-core wires after drying are assembled into the oxygen-free copper tube after drying to obtain a Cu-Nb primary composite rod;

[0031] (3) Drawing the Cu-Nb primary composite rod described in step (2), the pass proc...

Embodiment 3

[0035] (1) Draw the Cu / Nb single-core wire with a diameter of Φ25.0mm, the processing rate of each pass is 10%, and the intermediate drawing is carried out when the diameter is Φ6.0mm (total processing rate of drawing is 94%) Annealing, the annealing system is 500 ° C for 3 hours, and then continue to draw until the diameter is Φ1.6mm, straighten the drawn Cu / Nb single core wire on the wire straightening machine, and then straighten the Cu / Nb single core wire after straightening Nb single core wire is cut to length;

[0036](2) Pickling the oxygen-free copper tube of Φ25mm×2mm×800mm and 61 Cu / Nb single core wires cut to length in step (1) in dilute nitric acid with a volume percentage of 28%, and drying them separately after dehydration dry; then 61 Cu / Nb single-core wires after drying are assembled into the oxygen-free copper tube after drying to obtain a Cu-Nb primary composite rod;

[0037] (3) Drawing the Cu-Nb primary composite rod described in step (2), the pass process...

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Abstract

The invention discloses a short-flow preparation method for a Cu-Nb composite material. The method comprises the following steps of: drawing a Cu/Nb single core wire, straightening, and performing fixed-length cutting; acid-washing, dehydrating and drying an oxygen-free copper tube and the Cu/Nb single core wire; assembling the Cu/Nb single core wire into the oxygen-free copper tube to obtain a primary composite rod; drawing the primary composite rod, straightening, and performing fixed-length cutting to obtain a composite wire; acid-washing, dehydrating and drying the composite wire and another oxygen-free copper tube; assembling the composite wire into the oxygen-free copper tube to obtain a secondary composite rod; and repeatedly processing the secondary composite rod twice according to the processing method of the primary composite rod twice, and drawing until the secondary composite rod has a final size to obtain the Cu-Nb composite material. In the method, the process is simple, and the preparation period is short; and the prepared Cu-Nb composite material has the characteristics of high strength, high electric conductivity, steady performance and strong practicability, can meet the need of pulse magnets, and can be applied to the field of pulsed magnetic fields.

Description

technical field [0001] The invention belongs to the technical field of metal matrix composite material preparation, and in particular relates to a short-flow preparation method of Cu-Nb composite material. Background technique [0002] Copper-based composite materials with high strength and high electrical conductivity are used in the field of non-destructive pulsed strong magnetic fields. The operation of the magnet under high field conditions above 60T requires that the magnet winding material has high conductivity to reduce the Joule heating effect, and at the same time, the conductor material needs to have high strength to withstand the huge Lorentz force suffered by the magnet coil. Copper composite materials represented by Cu-Nb have high conductivity and tensile strength among various conductor materials, and are unanimously considered by magnet experts to be the conductor materials most likely to realize 100T pulsed strong magnetic field. [0003] At present, the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/00
Inventor 梁明卢亚锋段颖李成山
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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