Production equipment and method thereof of internal and external type high-strength high-conductivity wear-resistant copper-steel composite contact wire

Abstract

The invention relates to production equipment and a method thereof of an internal and external type high-strength high-conductivity wear-resistant copper-steel composite contact wire. The production equipment comprises a first mold, a circulating cooling system and a finishing mold; the first mold comprises an injection section and a cooling section, the injection section is provided with five injection ports for respectively injecting a steel core, molten copper, copper-magnesium alloy furnace water and copper-steel mixed furnace water, and the cooling section is provided with the circulating cooling system; the circulating cooling system is used for cooling a mixed liquid state of the copper water, the copper-magnesium alloy furnace water and the copper-steel mixed furnace water into a solid state; and the finishing mold is connected with the cooling section of the first mold and is used for drawing to form the contact wire. The bottom of the contact wire is made of 0.4% copper-magnesium alloy through continuous casting, a copper-magnesium alloy wear-resistant layer is formed, the wear resistance of the contact wire and a pantograph is improved, wear of the contact part of the contact wire is reduced, and therefore the service life of the contact wire is prolonged.

Description

technical field [0001] The invention relates to the field of wire rods, in particular to a production equipment and method for an internal and external high-strength, high-conductivity and wear-resistant copper-steel composite contact wire. Background technique [0002] With the development of electronic information technology, the requirements for the comprehensive performance of copper alloy conductive materials are getting higher and higher. It is required to maintain high electrical conductivity and thermal conductivity while maintaining high strength (hardness), toughness, and wear resistance. Sex, cold resistance, non-ferromagnetic and other characteristics. These excellent properties make copper alloys gradually become important metal materials used in high-tech fields such as electric power, information, transportation, energy, light industry and aerospace. In many occasions, it is rarely used in the form of pure copper. This is because the strength of pure copper i...

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Problems solved by technology

The Cu-Cr-Zr contact wire is still in the laboratory stage or the small batch test stage. Although there is a certain degree of improvement on the original basis, the improvement is limited. Chinese patent CN110660499A provides a large-length melt-infiltrated copper-steel Composite wire greatly enhances the tensile strength of the wire and maintains high electrical conductivity, but the composite part in the middle of this type of alloy material has the highest strength, and the lower part of the contact wire wears a lot after long-term contact with the pantograph, shortening the contact wire Therefore, there is an urgent need for an enhanced wear-resistant large-length, high-strength, and high-conductivity copper-steel composite contact wire to strengthen the wear resistance of the lower part of the contact wire and meet the development requirements of future high-speed railway wire rods.

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