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Electric railway contact line and machining process thereof

A technology for electrified railways and processing technology, applied in the manufacture of circuits, electrical components, cables/conductors, etc., can solve the problems of not too high speed, waste a lot of electric energy, etc. Effect

Inactive Publication Date: 2015-11-18
YANTAI WANLONG VACUUM METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cu-Ag is a low-strength and high-conductivity alloy, which is suitable for railways with low speed; Cu-Mg and Cu-Sn are medium-strength and medium-conductivity alloys. It is not an ideal contact wire alloy material, therefore, the present invention introduces an electrified railway contact wire and its processing technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Product chemical composition

[0025] The chemical composition of the product is Zr: 0.08%; Ce: 0.1%; Cu: the balance;

[0026] 2. Preparation method

[0027] 1) Add sponge zirconium, metal cerium, and electrolytic copper into a vacuum induction melting furnace according to the weight percentage of the prepared alloy composition, and melt it. The vacuum degree is <0.01Pa. After heating up to 1300°C, the copper water is melted and the temperature is lowered to 1200±30°C. Open the vacuum valve and pour copper water into the vacuum holding furnace; keep the temperature in the vacuum holding furnace at 1200±30°C, vacuum degree <0.01Pa, horizontal continuous casting, the specification of continuous casting billet: 150mm×150mm×10000mm, casting speed 150mm / min, single billet weight 2000Kg;

[0028] 2) Heating the continuous casting billet obtained in step 1) in an anhydrous-cooled pusher-type heating furnace at a heating temperature of 920° C. and holding it for 20 minut...

Embodiment 2

[0038] 1. Product chemical composition

[0039] The chemical composition of the product is Zr: 0.12%; Ce: 0.08%; Cu: the balance;

[0040] 2. Preparation method

[0041] 1) Add sponge zirconium, metal cerium, and electrolytic copper to the vacuum induction melting furnace according to the weight percentage of the prepared alloy composition, and melt it. The vacuum degree is <0.01Pa. After the temperature is raised to 1400 ° C, the copper water is melted and the temperature is lowered to 1200 ± 30 ° C. Open the vacuum valve, pour the copper water into the vacuum holding furnace; the vacuum holding furnace maintains a temperature of 1200±30°C, the vacuum degree is <0.01Pa, double-strand horizontal continuous casting, the specification of the continuous casting billet is: 150mm×150mm×10000mm, casting speed 150mm / min, single billet weight 2000Kg;

[0042] 2) Heating the continuous casting billet obtained in step 1) in an anhydrous-cooled pusher-type heating furnace at a heating ...

Embodiment 3

[0052] 1. Product chemical composition

[0053] The chemical composition of the product is Zr: 0.2%; Ce: 0.05%; Cu: the balance;

[0054] 2. Preparation method

[0055] 1) Add sponge zirconium, metal cerium, and electrolytic copper into a vacuum induction melting furnace according to the weight percentage of the prepared alloy composition, and melt it. The vacuum degree is <0.01Pa. After heating up to 1300°C, the copper water is melted and the temperature is lowered to 1200±30°C. Open the vacuum valve, pour the copper water into the vacuum holding furnace; the vacuum holding furnace maintains a temperature of 1200±30°C, the vacuum degree is <0.01Pa, double-strand horizontal continuous casting, the specification of the continuous casting billet is: 150mm×150mm×10000mm, casting speed 150mm / min, single billet weight 2000Kg;

[0056] 2) Heating the continuous casting billet obtained in step 1) in an anhydrous-cooled pusher-type heating furnace at a heating temperature of 900° C....

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Abstract

The invention discloses an electric railway contact line and a machining process thereof. The raw materials include 0.08-0.40% of zirconium, 0.05-0.10% of cerium, 0.05% of total impurities or less and the balance copper. According to the machining process of the contact line, a large-length and large-section continuous casting billet is obtained through vacuum melting and vacuum horizontal continuous casting; a large-length wire rod is obtained through full hot continuous rolling and on-line solid solution; the wire rod is subjected to drawing and stripping and then subjected to thermo-mechanical treatment for reducing; aging treatment reinforcement is carried afterwards; cold continuous rolling pre-formation is carried out at room temperature through a Y-type rolling mill; finally, finish drawing formation is carried out. The electric railway contact line produced through the process is fine and uniform in grain, free of defects, high in strength, electric conductivity and softening temperature and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a railway contact wire, in particular to an electrified railway contact wire and its processing technology, and belongs to the technical field of electric cables. Background technique [0002] Contact wires for electrified railways should have high strength, high electrical conductivity and high softening temperature. At present, the contact wire mainly adopts Cu-Mg, Cu-Sn, Cu-Ag alloys. Cu-Ag is a low-strength and high-conductivity alloy, which is suitable for railways with low speed; Cu-Mg and Cu-Sn are medium-strength and medium-conductivity alloys. It is not an ideal contact wire alloy material. Therefore, the present invention introduces an electrified railway contact wire and its processing technology. Contents of the invention [0003] The invention provides an electrified railway contact wire and its processing technology. [0004] The technical solution of the present invention to solve the above-mentioned technic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22F1/08H01B1/02H01B13/00
Inventor 王肇飞张宗宁汤德林张倩倩周舟柳鲁浩唐明明张焕玲
Owner YANTAI WANLONG VACUUM METALLURGY
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