Ternary copper-alloy stranded conductor and contact line preparing method

Abstract

Characters are that ternary copper alloy is prepared from materials according to following weight percent: magnesium 0.10-0.50, stannum 0.10-0.4, impurity less than 0.30, and other as copper. Through procedures of melting, heat preservation, casting bars, and cold rolling, twisted line and contact wire are prepared from the ternary copper alloy. In procedure for producing twisted alloy line, and contact wire, the invention raises furnace life of melting copper furnace and ratio between product and roughcast. The ratio is near to a hundred percent, and furnace life is raised to three times so as to lower cost and raise productivity. Through measurement by relevant department, mechanical and physical properties etc. indexes of the hard twisted alloy line reaches to or exceeds relevant indexes of current twisted line of magnesium copper. Product is accorded with requirement of technical standard completely.

Description

technical field [0001] The invention relates to a wire, in particular to a twisted wire, a contact wire, etc. used on an electrified railway catenary, and belongs to the technical field of cable wires. Background technique [0002] According to relevant literature reports, in 1996, the operating mileage of electrified railways in my country was 10,000 kilometers, and the electrification rate accounted for 17.8%. , but compared with Germany, France, Japan and other advanced countries, there is still a big gap compared with the operating mileage of electrified railways accounting for one-third and the operating volume undertaking two-thirds. In order to meet the needs of economic development, my country's electrified railways are developing in the direction of high speed and heavy loads. The annual demand for catenary conductors is 6,000 tons and current-carrying catenary cables are 6,000 tons. In recent years, with the continuous increase of railway speed for many times, the ...

AI Technical Summary

Problems solved by technology

However, there are still some problems in the production process of magnesium-copper alloy stranded wire, that is, because magnesium is a corrosive and active element, magnesium will cause strong corrosion to the furnace wall of the copper melting furnace and the holding furnace during the alloy melting process. , usually the furnace life is only 7 to 30 days, frequent furnace maintenance will increase production costs and low productivity

In addition, due to factors such as furnace wall damage, the process performance fluctuates greatly, resulting in a blank yield of only about 70%.

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