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Reinforcing core of fiber-reinforced copper matrix composite contact wire

A copper-based composite material and fiber-reinforced technology, applied in the field of contact wires, can solve the problems of easy peeling of the metal reinforced core from the matrix material, different electrode potentials, electrochemical corrosion, etc., to increase the maximum suspension tension, enhance bonding, and improve The effect of corrosion resistance

Active Publication Date: 2018-05-18
CHINA RAILWAYS CORPORATION +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electrode potentials of aluminum, steel, and copper are different, and electrochemical corrosion is prone to occur, so there are many problems such as poor corrosion resistance and easy peeling of the metal reinforced core from the base material.

Method used

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  • Reinforcing core of fiber-reinforced copper matrix composite contact wire
  • Reinforcing core of fiber-reinforced copper matrix composite contact wire
  • Reinforcing core of fiber-reinforced copper matrix composite contact wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Take the 12K fiber bundle of T700SC carbon fiber and tin-copper (the tin content is 0.15% mass fraction ratio) alloy wire, place it in a braiding machine for interlaced braiding, and the obtained reinforcing core is as follows: figure 2 As shown, in an Ar gas protective atmosphere, copper cladding and rounding are performed on the reinforcing core.

[0042] In its characteristic cycle section, it can be regarded as a triangular substructure 5 composed of 2 bundles of carbon fiber bundles 3 and a copper alloy wire 4, and 6 triangular substructures 5 are tightly wrapped around a copper alloy wire, and then all The triangular substructure 5 is helically drawn out, and the spin directions of adjacent triangular substructures 5 are opposite. In a characteristic cycle section of the reinforcing core in this embodiment, it can be seen that the triangular substructure 5 is spirally drawn out along the axial direction, during which the triangular substructure spins 360° and clo...

Embodiment 2

[0044] Get the fiber bundle of SYT49 type carbon fiber and silver-copper alloy wire (silver content is 0.10% mass fraction ratio), be placed in braiding machine and carry out interlaced braiding process, the reinforced core that obtains is as follows image 3 As shown, in the N2 gas protective atmosphere, the reinforced core will be covered with copper and rounded.

[0045] In the general circulation section of the reinforced core, it can be regarded as a paired substructure 6 composed of a bundle of carbon fiber bundles 3 and a copper alloy wire 4, and eight paired substructures 6 are tightly surrounded and then spirally drawn out. Adjacent pairs of substructures 6 have the same helical direction. In this embodiment, the carbon fiber bundle 3 and the copper alloy wire 4 have the same cross-sectional diameter. In the characteristic section of the reinforcing core, the area ratio of the carbon fiber bundle 3 to the copper alloy wire 4 is close to 1:1.

Embodiment 3

[0047] Take the fiber bundle of SYT50 carbon fiber, put it in the braiding machine for interlacing braiding, and the obtained reinforcing core is as follows: Figure 4 As shown, in a vacuum atmosphere, copper-clad plus rounding treatment is performed on the reinforcing core.

[0048] In the characteristic circulation section of the reinforcing core, mainly composed of carbon fiber bundles, which have the same type and diameter. This embodiment adopts a layered structure, and in each layer, carbon fiber bundles 3 with the same diameter are uniformly distributed along the circumferential direction to form a ring substructure 7, and the number of carbon fiber bundles 3 contained in the inner layer to the outer layer is 1, 6, and 12 respectively. , 18. The carbon fiber bundles 3 of all layers are spirally drawn out along the axial direction, and the directions of the carbon fiber bundles 3 of any two adjacent layers are opposite.

[0049] In summary, the reinforcing core of the ...

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Abstract

The embodiment of the invention provides an enhancement core of a fiber-reinforced copper-based composite material contact line. The enhancement core is composed of copper alloy wires and carbon fiber bundles. The enhancement core axially comprises a plurality of repeated feature circulation segments. The radial section of each feature circulation segment comprises a substructure formed by arranging one or more carbon fiber bundles and one or more copper alloy wires in a staggered manner. Due to the fact that the carbon fiber has the beneficial effects of being large in tensile strength, high in modulus and the like, the enhancement core has the larger tensile strength, potential difference does not exist between the carbon fiber and copper or between the carbon fiber and added alloy elements, the whole corrosion resistance of the contact line can be improved, and the enhancement core has the higher electrochemical corrosion resistance performance.

Description

technical field [0001] The invention relates to the technical field of contact wires, in particular to a reinforcing core of a fiber-reinforced copper-based composite material contact wire. Background technique [0002] The contact wire is a key component of the electrified railway pantograph-catenary system. It is required to have sufficient tensile strength to bear its suspension tension to ensure that the electrified railway locomotive can obtain good current; at the same time, it is required to have excellent electrical conductivity to ensure that the electrified line is relatively Low power loss. [0003] Today, domestic electrified railway construction has entered a period of rapid development. The technology for the construction and operation of high-speed railways with a speed of 250 kilometers per hour and 350 kilometers per hour has matured. The upsurge, which puts forward higher requirements for the electrified railway catenary, requiring the catenary to have ext...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C49/14C22C101/10C22C111/00
Inventor 姜家杰韩建民杨智勇李逢源张进东周洋谭谆礼
Owner CHINA RAILWAYS CORPORATION
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