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Copper alloy for contact line and application thereof

A technology of contact wire and copper alloy, applied in the direction of metal rolling, can solve the problem of urgency of high-speed railway contact wire, and achieve the effect of uniform grain size distribution, industrialization and easy industrialization.

Inactive Publication Date: 2010-03-31
YUNNAN COPPER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, my country's high-speed railway conductors have not yet formed a system, and it is urgent to develop high-speed railway contact wires with independent intellectual property rights

Method used

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  • Copper alloy for contact line and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] According to the composition of the alloy described in Table 1, the cathode copper is first put into the induction furnace for smelting during smelting, and the temperature is controlled at 1120-1150 ° C. The copper liquid flows from the induction furnace through the transition chute into the tundish. The temperature of the tundish is maintained at 1110-1130°C, and at the same time, the SnCr alloy wire is continuously fed through the wire feeding mechanism, and the molten copper is cooled in the belt-type casting machine. The speed of the casting machine is controlled: 810rpm, and the cooling water pressure is controlled at 0.05-0.35 MPa, the molten copper is solidified into a cast slab, and the cast slab is milled by the dressing system, and then enters the continuous rolling mill at a rolling temperature of 740-760°C for rolling, and the rolling mill speed is controlled at 750-800rpm. The pressure of the emulsion in the continuous rolling mill is controlled at 0.10-0.1...

Embodiment 2

[0024] According to the composition of the alloy described in Table 2, the cathode copper is first put into the induction furnace for smelting during smelting, the temperature is controlled at 1120-1150 °C, and the copper liquid flows into the tundish from the induction furnace through the transition chute. The temperature of the tundish is maintained at 1110-1130°C, and at the same time, the SnZr alloy wire is continuously fed through the wire feeding mechanism, and the molten copper is cooled in the belt-type casting machine. The speed of the casting machine is controlled: 760rpm, and the cooling water pressure is controlled at 0.05-0.35 MPa, the molten copper is solidified into a cast slab, and the cast slab is milled by the dressing system, and then enters the continuous rolling mill at a rolling temperature of 740-760°C for rolling, and the rolling mill speed is controlled at 750-800rpm. The pressure of the emulsion in the continuous rolling mill is controlled at 0.10-0.15...

Embodiment 3

[0028] According to the composition of the alloy stated in Table 3, the cathode copper is first put into the induction furnace for smelting, and the temperature is controlled at 1100-1130 ° C. The copper liquid flows from the induction furnace through the transition chute into the tundish. The temperature of the tundish is maintained at 1080-1120°C, and at the same time, the SnCr alloy wire is continuously fed through the wire feeding mechanism, and the molten copper is cooled in the belt-type casting machine. The speed of the casting machine is controlled: 860rpm, and the cooling water pressure is controlled at 0.05-0.35 MPa, the molten copper is solidified into a cast slab, and the cast slab is milled by the dressing system, and then enters the continuous rolling mill at a rolling temperature of 800-850°C for rolling, and the rolling mill speed is controlled at 725-750rpm. The pressure of the emulsion in the continuous rolling mill is controlled at 0.10-0.15MPa, the compositi...

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Abstract

The invention relates to copper alloy for a contact line and the application thereof; the copper alloy for the contact line at least contains tin with the content of 0.01-0.4 percent (weight percentage); a method for manufacturing copper alloy wires by the copper alloy is that: high-purity cathode copper is added in an induction furnace and the temperature of melted copper in the furnace is 1100-1160 DEG C; tin-chromium, tin-zirconium or tin-chromium-zirconium master alloy is added in a tundish continuously by a charging device, and the temperature of the tundish is controlled to be 1080-1150DEG C; the alloy is injected in a belt-type casting machine with 750-900rpm of rotating speed by a water pipe, cooing water pressure is controlled to be 0.05-0.35MPa,andthen a casting blank is obtained after cooling, solidification and formation; the casting blank is fed in a rolling mill with 600-800rmp of running speed to be rolled continuously after being milled and finished, and the temperature of the casting blank which is fed in the rolling mill is controlled to be 700-850 DEG C, and the casting blank is rolled and deformed by multiple passes to be formed into copper alloy wire blanks with various specifications. The copper alloy has the advantages that: the developed copper alloy for the contact line has high elongation percentage and tensile strength, is in accordance to the application requirements of high-speed railways and is particularly suitable for electrified trains with more than 300km / h of running speed; the manufacturing method of the lead wires is simple, has low cost and is easy to realize industrialization.

Description

technical field [0001] The invention belongs to the technical field of alloy materials, and mainly relates to a copper alloy material with high strength and high conductivity, which is mainly used in the field of contact wires, and its manufacturing method and application. Background technique [0002] Transportation is the lifeblood of the national economy. At present, there is still a big gap between my country's main transportation equipment and core technology level and the world's advanced level, such as insufficient transportation supply capacity and lagging behind in the construction of comprehensive transportation systems. The development of society has put forward higher requirements for transportation, and transportation technology is facing major strategic needs. For this reason, the high-speed rail transit system is listed as a priority theme in the key areas of transportation in the "National Medium- and Long-term Science and Technology Development Planning Out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/03B22D11/06B22D11/16B22D11/22B21B1/18
Inventor 史谊峰黄国杰杨志兵米绪军赵大军谢水生张邦琪高宝东李刚高鹏
Owner YUNNAN COPPER CO LTD
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