High-strength copper tin alloy contact line for high-speed electric railway and manufacturing method thereof

A technology of electrified railways and copper-tin alloys, applied in the direction of metal/alloy conductors, etc., can solve the problems of complex production process, small batch, high cost, etc., and achieve the effect of simple production process, low cost and large batch

Active Publication Date: 2010-11-10
沈阳北恒新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the copper alloy contact wires used in domestic electrified railway contact nets for high-speed railways with electrified railway speeds of 250 km/h and 350 km/h an

Method used

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  • High-strength copper tin alloy contact line for high-speed electric railway and manufacturing method thereof
  • High-strength copper tin alloy contact line for high-speed electric railway and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Embodiment 1: High-strength copper-tin alloy contact wire for high-speed electrified railway and its manufacturing method

[0027] Add 35 tons of high-purity cathode copper to the vertical melting furnace. When the temperature of the holding furnace rises to 1140°C-1150°C, the atmosphere in the furnace is guaranteed to be slightly reduced, and production begins. The molten liquid metal flows into the ladle continuously through the down launder, and metal tin wire is added in the down launder by wire feeding method controlled at 0.65% by weight, and the addition amount is synchronized with the casting speed. Sampling and analysis showed that casting and rolling started after the tin content was qualified. The temperature of the ladle was controlled at 1100-1120°C, the casting speed was 750rpm, and the cooling water pressure was 0.08-0.25Mpa. After cooling and solidification, the casting billet was formed. The casting cross-section was trapezoidal. Cross-sectional area 23...

Example Embodiment

[0033] Embodiment 2: High-strength copper-tin alloy contact wire for high-speed electrified railway and its manufacturing method

[0034] Put 35 tons of high-purity cathode copper into the vertical melting furnace. When the temperature of the holding furnace rises to 1140°C-1155°C, the atmosphere in the furnace is guaranteed to be slightly reduced, and production begins. The molten liquid metal flows into the ladle continuously through the down launder, and metal tin wire is added in the down launder by wire feeding method controlled at 0.70% by weight, and the addition amount is synchronized with the casting speed. Sampling and analysis showed that the casting and rolling started after the tin content was qualified. The temperature of the ladle was controlled at 1110-1125°C, the casting speed was 750rpm, and the cooling water pressure was 0.10-0.35Mpa. After cooling and solidification, the cast billet was formed. The casting cross-section was trapezoidal. Cross-sectional area...

Example Embodiment

[0041] Embodiment 3: High-strength copper-tin alloy contact wire for high-speed electrified railway and its manufacturing method

[0042] Put 35 tons of high-purity cathode copper into the vertical melting furnace. When the temperature of the holding furnace rises to 1145°C-1160°C, the atmosphere in the furnace is guaranteed to be slightly reduced, and production begins. The molten liquid metal flows into the ladle continuously through the down launder, and metal tin wire is added in the down launder by wire feeding method controlled at 0.75% by weight, and the addition amount is synchronized with the casting speed. Sampling and analysis showed that casting and rolling started after the tin content was qualified. The temperature of the ladle was controlled at 1115-1130°C, the casting speed was 800rpm, and the cooling water pressure was 0.15-0.40Mpa. After cooling and solidification, the billet was formed. The casting cross-section was trapezoidal. Cross-sectional area 2300mm ...

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Abstract

The invention provides a high-strength copper tin alloy contact line for a high-speed electric railway, and in particular relates to a copper tin alloy which comprises the following components in percentage by mass: 0.50 to 0.85 percent of tin, no more than 0.10 percent of impurity and the balance of copper. The invention also provides a manufacturing method for the high-strength copper tin alloy contact line for the high-speed electric railway. Compared with the prior art, the high-strength copper tin alloy contact line of the invention fills in the gaps in China. Because the high-strength copper tin alloy contact line has a series of advantages, such as high strength, high plasticity, small grain size, simple production process, low cost, big batch size and the like, the high-strength copper tin alloy contact line can be applied to the rapid transit railway of which the speed per hour is 250 to 350 km, is expected to get good economic benefit and social benefit, and greatly promotes development of the electric railway industry in China.

Description

Technical field: [0001] The invention relates to the technical field of nonferrous metal processing, and in particular provides a high-strength copper-tin alloy contact wire for high-speed electrified railways and a manufacturing method thereof. Background technique: [0002] Today, my country's electrified railway construction has entered a period of rapid development. The construction of high-speed railways with a speed of 250 km / h and 350 km / h and above has become the development trend of China's railway construction. At present, the copper alloy contact wires used in domestic electrified railway contact nets for high-speed railways with electrified railway speeds of 250 km / h and 350 km / h and above are mainly copper-magnesium alloy contact wires, and the production process of copper-magnesium alloy contact wires is complicated. , long cycle, high cost, small batch. [0003] Therefore, people expect to obtain a high-strength copper-tin alloy contact wire for high-speed el...

Claims

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Application Information

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IPC IPC(8): H01B1/02C22C9/02C22C1/02C22F1/08
Inventor 张敏陈绍华逯富君王恒波高峰李玉刚罗兴盛付坚
Owner 沈阳北恒新材料有限公司
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