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Production equipment and method of center riveting type copper-steel composite contact line

A technology of copper-steel compounding and production methods, applied in the field of wire rods, can solve problems such as potential safety hazards, copper-steel detachment, etc., and achieve the effects of eliminating voids, saving electrical conductivity, and overcoming detachment

Pending Publication Date: 2022-03-22
CHINA RAILWAY CONSTR ELECTRIFICATION BUREAU GRP KANG YUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing copper-clad steel or copper-steel composite contact wire simply increases the pressure, pressure or cold rolling, so that the copper and steel have a large amount of deformation, so that the copper and steel are composited together, and the process is simple. Due to the mismatch of expansion coefficients, the phenomenon of copper and steel detachment will cause safety hazards

Method used

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  • Production equipment and method of center riveting type copper-steel composite contact line
  • Production equipment and method of center riveting type copper-steel composite contact line
  • Production equipment and method of center riveting type copper-steel composite contact line

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Effect test

Embodiment 1

[0031] See figure 1 and image 3 , image 3 A structural diagram of a production equipment of a central riveted copper steel composite contact line is drawn. As shown, the production apparatus of the central riveted copper steel composite contact line according to the present invention includes a first mold 1, a second mold 4, a continuous cold forging device 6, and a finishing mold 7.

[0032] The first mold 1 is provided with a steel pole inlet 2, and both sides of the steel pole inlet 2 are provided with a regulating valve. On the side of the steel pole inlet 2, a protective gas entry is provided, and the protective gas is transferred. On the one hand, it is Impurities of the metal surface, the second is to remove oxides on the surface of the threaded steel rod, including iron oxides, and the third is to remove the surface of the surface, is isolated, isolated, so as to avoid the composite forming shape as the threaded steel rod enters the cavity.

[0033] The first mold 1 includ...

Embodiment 2

[0055] See figure 2 , figure 2 A structural diagram of the contact line of Example 2 of the present invention is plotted. As shown, in the present embodiment, in this embodiment 2, the composite copper steel strand 8.5 is used instead of the threaded steel core 8.1, the composite copper steel stranded pair 8.5 includes a central monofilament and a center monofilament. Multi-layer peripheral single line, the center monofilament is steel wire 8.51, each peripheral single line comprising spaced wire 8.51 and copper wire 8.52.

[0056] The peripheral single line is not less than two layers.

[0057] The composite copper strand 8.5 after entering the copper chamber, the melting point of copper is 1083 ° C, the melting point of the steel, the temperature of the copper water is as high as 1200 ° C, and the copper wire 8.52 of the composite copper steel strand 8.52 is melted, melted. After that, the copper water in the copper cavity is filled with a gap melting of the copper wire 8.52, th...

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Abstract

The invention relates to production equipment and method for a center riveting type copper-steel composite contact line. The production equipment comprises a first die, a second die, a continuous cold forging device and an arrangement die which are arranged in sequence. A steel rod inlet is formed in the first mold, the first mold comprises an injection section and a cooling section, the injection section is provided with a copper cavity, molten copper isolated from air is injected into the copper cavity, the copper cavity is communicated with the steel rod inlet, and a threaded steel rod or a composite copper steel strand is placed in the steel rod inlet; the cooling section is provided with a cooling circulation system, materials enter the second die after being cooled into a solid state through the circulation cooling system, a continuous cold forging device and an arrangement die are sequentially arranged on the second die, and the contact line is formed through cooling and drawing. The deformed steel bar core is arranged in the center of the copper layer of the contact wire, and the periphery of the groove of the deformed steel bar is filled with molten copper after the molten copper enters the copper cavity, so that falling caused by linear expansion factors of copper and steel in the transverse direction is overcome, and the copper and the steel are completely riveted together.

Description

Technical field [0001] The present invention relates to the field of wire, and more particularly to a production apparatus of a central riveted copper steel composite contact line. Background technique [0002] With the development of electronic information technology, the comprehensive use of copper alloy electromechanical materials is getting higher and higher, requiring it to maintain high strength (hardness), toughness, and wear resistance, maintained high conductivity, thermally Characteristics such as nature, cold resistance, ferromagnetic properties. These excellent features make copper alloys into important metal materials used in high-tech fields such as electricity, information, transportation, energy, light industry and aerospace. Many applications are rarely used in pure copper, because pure copper is low (230 ~ 300 MPa), although the cold processing can reach 400 MPa, but the elongation is only 2%, which is used at a certain temperature. When the enhancement effect i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/08B22D19/14B21C37/04
CPCB22D19/08B22D19/14B21C37/047
Inventor 鲁衍任沈华赵德胜花思明杨玉军寇宗乾孟宪浩杜宽武鸿亮何宇王士斌于婷王国迎赵海洋路超张光飞王哲
Owner CHINA RAILWAY CONSTR ELECTRIFICATION BUREAU GRP KANG YUAN NEW MATERIALS CO LTD
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