Carbon fiber whisker reinforced contact net lead and preparation method thereof

A catenary and carbon fiber technology, applied in the direction of overhead lines, metal rolling, liquid chemical plating, etc., can solve the problems of large temperature difference changes, low tensile strength of catenary wires, poor arc resistance, etc., and achieve elastic modulus Large, light weight, high tensile strength effect

Inactive Publication Date: 2010-02-17
张世永
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a carbon fiber whisker-reinforced catenary wire and its preparation method to solve the problems of low tensile strength, large temperature difference change and poor arc resistance of the existing catenary wire

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  • Carbon fiber whisker reinforced contact net lead and preparation method thereof
  • Carbon fiber whisker reinforced contact net lead and preparation method thereof

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Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0016] The invention provides a carbon fiber whisker-reinforced catenary wire, aimed at the existing aluminum-clad steel, copper-clad steel, silver-copper alloy or pure copper contact wires with low tensile strength, small elastic modulus, poor arc resistance, thermal expansion Significant improvements have been made to solve the problem that the cold shrinkage coefficient is large and cannot meet the technical requirements for current intake of electric locomotives on high-speed electrified railways. The tensile strength of carbon fiber is more than 8-10 times that of ordinary steel, and the modulus of elasticity is better than that of steel, with excellent creep resistance, corrosion resistance and shock resistance; carbon fiber is light in weight, only 1 / 5 of st...

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Abstract

The invention discloses a preparation method of a carbon fiber whisker contact net lead, and the contact net lead comprises a carbon fiber, a whisker, metal conducting media and additives. The carboncontent of the carbon fiber is not less than 90 percent, and the tensile strength is not less than 3500MP; the whisker is a zinc oxide whisker, a calcium sulphate whisker, a magnesium sulphate whisker, a magnesia whisker or a silicon carbide whisker; the metal conducting media are copper, silver, aluminum, magnesium and zinc or a copper alloy, a silver alloy, an aluminum alloy, a magnesium alloy and a zinc alloy; and the additives are nickel, tin and niobium. The integral contact net lead is in an annular structure, and two V-shaped notches are laterally symmetrically arranged at the upper part of one half of an outer ring. The carbon fiber whisker contact net lead has the characteristics of high tensile strength, large elastic modulus, good flexibility, light weight and easy installation,has the key characteristics of small change of lead tension and sag along with air temperature, and is suitable for the requirement of the power supply engineering of high speed railway contact netsor urban track traffic contact nets.

Description

technical field [0001] The invention relates to an electrified railway catenary conductor, in particular to a carbon fiber whisker reinforced catenary conductor and a preparation method thereof. Background technique [0002] At present, my country's electrified railway or urban rail transit catenary wire materials include cold-rolled pure copper, aluminum-steel composite wire, tin-copper, silver-copper, tin-silver-copper and other alloy wires, but the above materials can only be adapted to low-speed, medium-speed and quasi-high-speed power The locomotive meets the technical requirements of flow, but cannot meet the technical conditions of high-speed railway. At present, the catenary wires that can meet the technical conditions for electric locomotives with a speed of 300 kilometers per hour are mainly Cu-Mg-Re magnesium-copper alloy catenary wires. The raw materials of this wire are mostly imported from abroad, and the price is abnormally high. With the development of high-s...

Claims

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Application Information

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IPC IPC(8): B60M1/13C22C49/14C22C47/04C23C18/38B21B1/46
Inventor 张世永
Owner 张世永
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