Production equipment and method for dovetail-type high-strength, high-conductivity, wear-resistant copper-steel composite contact wire

Abstract

The invention relates to a production equipment and method for a dovetail-type high-strength, high-conductivity and wear-resistant copper-steel composite contact wire, which includes a first mold, a second mold and a finishing mold arranged in sequence, and the first mold includes an injection section and an injection section. In the cooling section, the injection section is provided with three injection ports for injecting copper water, copper-magnesium alloy furnace water and molten steel respectively. The cooling section is provided with a first circulating cooling system, and the second mold includes an injection section and a cooling section. The injection section is provided with There is an injection port, which injects copper-steel mixed furnace water, and the cooling section is equipped with a second circulating cooling system; the contact line is formed after the drawing of the finishing mold and the rolling of the upper and lower drawing wheels. The bottom of the inventive contact wire is continuously cast with 0.4% copper-magnesium alloy to form a layer of copper-magnesium alloy wear-resistant layer, which increases the wear resistance with the pantograph and reduces the wear of the contact part of the contact wire, thereby increasing the use of the contact wire life.

Description

technical field [0001] The invention relates to the field of wire rods, in particular to a production equipment and method for a dovetail-shaped 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 is low (...

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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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