Copper-chromium-titanium alloy contact wire and preparation method thereof

A technology of copper-chromium-titanium alloy and contact wire, applied in the direction of metal/alloy conductors, etc., can solve the problems of easy burning, limitation of large-scale application, difficulty in realizing Cu-Cr-Zr alloy atmospheric melting, etc., and achieve simple and easy process Easy, high strength, low cost effect

Inactive Publication Date: 2015-12-02
JIANGXI UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the active nature of Zr element, it is easy to burn out, and it is difficult to realize the atmospheric melting of Cu-Cr-Zr alloy, which limits the large-scale application of this material.

Method used

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  • Copper-chromium-titanium alloy contact wire and preparation method thereof
  • Copper-chromium-titanium alloy contact wire and preparation method thereof
  • Copper-chromium-titanium alloy contact wire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Place the electrolytic copper in an induction furnace for atmospheric smelting, cover it with calcined charcoal and flake graphite, add Cu-5%Cr and Cu-15%Ti master alloys in sequence after the electrolytic copper is melted, and the added components are 0.15% by total weight chromium, 0.10% titanium, and the alloy melt is refined at a melting temperature of 1250±10°C, and then the alloy is deslagged.

[0040] The alloy after refining and slag removal is carried out upward continuous casting, the upward temperature is 1220±10℃, the upward speed is 200±15mm / min, the specification of the upper rod is Φ16-22mm, and then solid solution treatment is carried out at a temperature of 950 ±10°C, the time is 90min, water quenching at room temperature.

[0041] The quenched alloy is continuously extruded, and the diameter of the extruded rod is Φ24-31mm, followed by a double-stage aging treatment at a temperature of 520°C for 1.5h, and then aged at a temperature of 490°C for 2h.

...

Embodiment 2

[0046] Place the electrolytic copper in an induction furnace for atmospheric smelting, cover it with calcined charcoal and flake graphite, add Cu-5%Cr, Cu-15%Ti, Cu-10%Mg master alloy and pure silicon, the added ingredients are based on the total weight The percentages are 0.15% chromium, 0.10% titanium, 0.05% Mg and 0.02% Si, and the alloy melt is refined at a melting temperature of 1250±10°C, and then the alloy is deslagged.

[0047] The alloy after refining and slag removal is carried out upward continuous casting, the upward temperature is 1220±10°C, the upward speed is 200±15mm / min, the specification of the upward blank rod is Φ16-22mm, and then solid solution treatment is carried out at the temperature of 950±10°C, time 90min, water quenching at room temperature.

[0048] The quenched blank rod is continuously extruded, and the diameter of the extruded rod is Φ24-31mm, followed by a double-stage aging treatment at a temperature of 530°C for 1.2h, and then aged at a tempe...

Embodiment 3

[0051] Place the electrolytic copper in an induction furnace for atmospheric smelting, cover it with calcined charcoal and flake graphite, add Cu-5%Cr and Cu-15%Ti master alloys in sequence after the electrolytic copper is melted, and the added components are 0.25% by total weight chromium, 0.17% titanium, and the alloy melt is refined at a melting temperature of 1250±10°C, and then the alloy is deslagged.

[0052] The alloy after refining and slag removal is carried out upward continuous casting, the upward temperature is 1220±10°C, the upward speed is 200±15mm / min, the specification of the upward blank rod is Φ16-22mm, and then solid solution treatment is carried out at the temperature of 950±10°C, time 90min, water quenching at room temperature.

[0053] The quenched blank rod is continuously extruded, and the diameter of the extruded rod is Φ24-31mm, followed by a double-stage aging treatment at a temperature of 550°C for 1.0h, and then aged at a temperature of 450°C for 4...

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Abstract

The invention discloses a copper-chromium-titanium alloy contact wire and a preparation method thereof. The copper-chromium-titanium alloy contact wire is prepared from a copper alloy through the processes of atmospheric smelting, upward continuous casting, continuous extrusion, heat treatment, rolling and drawing and the like, wherein the copper alloy contains Cu, 0.15-0.35% of Cr, 0.10-0.23% of Ti, 0-0.05% of Mg and 0-0.02% of Si, and the total amount of impurities of the copper alloy is not more than 0.1%. Under the conditions that the process is simplified and equipment and alloy components are relatively simple, large-scale industrialized production can be realized, and the contact wire has relatively high tensile strength, excellent electric conductivity and softening resistance and good electrical sliding wear performance.

Description

technical field [0001] The invention relates to a contact wire and a preparation method thereof, in particular to a copper-chromium-titanium alloy contact wire and a preparation method thereof. Background technique [0002] With the rapid development of high-speed railways towards high efficiency, environmental protection and energy saving, contact wires for high-speed railways are required to have comprehensive properties such as high tensile strength, excellent electrical conductivity and high anti-softening temperature. Copper alloy is the most widely used high-speed railway contact wire, and almost all foreign high-speed electrified railways use copper alloy contact wire. But for a long time, there has been a contradiction between high strength and high conductivity in the research and preparation of copper alloy contact wires. The improvement of strength must be based on the addition of alloy elements. The existence of any solute atoms will cause lattice distortion. As...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22F1/08H01B1/02
Inventor 张建波李勇钟明龙许方段志涛李兆海朱峰张光伟官珊丹刘耀朱映玉
Owner JIANGXI UNIV OF SCI & TECH
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