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Copper alloy material for contact net wire

A technology of copper alloy and catenary, applied in the direction of metal/alloy conductors, overhead lines, etc., can solve the problems that cannot meet the service conditions of high-speed railways, and achieve the effect of reducing manufacturing costs

Inactive Publication Date: 2003-04-16
四川鑫炬新兴新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the materials used for catenary wires in my country include cold-rolled pure copper, aluminum-steel composite wire, tin-copper, silver-copper, tin-silver-copper and other alloy wires. Among them, silver-copper alloys are used in the largest amount, and most of them are imported from abroad. Medium-speed and quasi-high-speed <250KM / h technical requirements, but cannot meet the service conditions of high-speed railways

Method used

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Embodiment

[0023] In the process of this embodiment, the purity of Te and Li is 99.99%, the purity of Mg is 99%, and copper is general industrial pure copper and unavoidable impurities. The above-mentioned process is used to prepare alloy ingots with 4 components, and hot extrusion Formed into φ12 blank, and then cold drawn into φ8 rod, measured according to GB4909.3 and GB3048.2 standards, its main performance indicators are shown in Table 3.

[0024] Tensile strength σ b

[0025] Arcing voltage (KV)

[0026] Table 3 Chemical composition and main performance index of the present invention

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Abstract

The chemical constituent (weight percentage) of the copper alloy material includes Te 0.1-1.2, Mg 0.2-1.3, Li 0.02-0.50 and Cu as the rest as well as unavoidable impurities. According to specification needed, the contact line of conducting wire is made through the procedures of getting conventional materials ready, mixture making, melting, casting ingot as well as cold working and hot working. Its copper alloy possesses the properties of tensile strength as 523-576 MPa, resistivity as 0.022695-0.023764 ohm mm2 / m, recrystallization temperature as 390-410 deg.C. The invented alloy provides the capability of anti electric arc equivalent to the alloy of 0.3Ag-Cu but with lower cost than the 0.3 Ag-Cu alloy about 10-20%.

Description

1. Technical field [0001] The invention relates to a copper alloy material for a high-speed electrified railway catenary wire. 2. Background technology [0002] The world's wheel-rail railways are developing towards high speed (above 300KM / h). There are many technical problems that need to be solved to realize the high speed of electrified railways. One of them is the material problem of catenary wires. At present, the materials used for catenary wires in my country include cold-rolled pure copper, aluminum-steel composite wire, tin-copper, silver-copper, tin-silver-copper and other alloy wires. Among them, silver-copper alloys are used in the largest amount, and most of them are imported from abroad. The technical requirements of medium speed and quasi-high speed <250KM / h cannot meet the service conditions of high-speed railways. Therefore, the study of materials for high-speed catenary conductors is not only a material problem that needs to be solved urgently for the hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60M1/13C22C9/00H01B1/02
Inventor 陈家钊侯仁义侯立玮
Owner 四川鑫炬新兴新材料科技有限公司
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