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A high-temperature-resistant high-strength beryllium-free copper wire and its preparation method

A high-temperature, high-strength technology, used in cable/conductor manufacturing, conductors, conductive materials, etc., can solve problems such as the gap in comprehensive performance and high-temperature resistance, and achieve the effect of improving electrical conductivity, purifying crystal grains, and reducing impact

Active Publication Date: 2019-04-30
安徽晋源铜业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the high-strength copper wires used for welding machine electrodes, low-pressure casting molds, and turbo generator slot wedges are mainly beryllium-cobalt-copper and beryllium-nickel-copper series. CuNi was developed to save beryllium and cobalt resources and reduce costs. 2 Alloys such as SiCr, but there is still a big gap in comprehensive performance, especially high temperature resistance. The alloying and processing technology development of beryllium-free copper alloy materials is still a hot and difficult research point in this field.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A high-temperature-resistant high-strength beryllium-free copper wire is prepared by the following steps:

[0022] S1. Put the high-purity copper, pure iron and covering agent blocks into the high-frequency induction melting furnace, heat until completely melted, keep warm and stir, add copper-nickel alloy, copper-strontium alloy, copper-indium alloy, magnesium strip and rare earth elements Lanthanum, heated to 1230°C, stirred and smelted to obtain copper alloy melt;

[0023] S2, carry out component detection to copper alloy melt, it comprises by weight percentage: Ni 0.2%, Fe 4.5%, Sr 0.1%, In 0.06%, Mg 0.2%, La 0.03%, the balance is copper;

[0024] S3. Drain the copper alloy solution obtained in S2 to the high-vacuum single-roller spin quenching and spray-casting system, pass in protective gas to vacuum, heat to 950°C for spray-casting, stop the rotation of the copper roll after complete cooling, and pass in air to balance air pressure to get thin strips;

[0025] ...

Embodiment 2

[0027] A high-temperature-resistant high-strength beryllium-free copper wire is prepared by the following steps:

[0028] S1. Put the high-purity copper, pure iron and covering agent blocks into the high-frequency induction melting furnace, heat until completely melted, keep warm and stir, add copper-nickel alloy, copper-strontium alloy, copper-indium alloy, magnesium strip and rare earth elements Lanthanum, heated to 1260°C, stirred and smelted to obtain copper alloy melt;

[0029] S2. Detecting the components of the copper alloy melt, which includes: Ni 0.5%, Fe 3%, Sr 0.25%, In 0.04%, Mg 0.35%, La 0.01%, and the balance is copper;

[0030] S3. Drain the copper alloy solution obtained in S2 to the high-vacuum single-roller spin quenching and spray-casting system, and introduce protective gas until the vacuum degree is 4×10 -5 Pa, heat to 970°C for spray casting, the roller speed is 20m / min, stop the copper roller rotation after it is completely cooled, and pass air to the e...

Embodiment 3

[0034] A high-temperature-resistant high-strength beryllium-free copper wire is prepared by the following steps:

[0035] S1. Put the high-purity copper, pure iron and covering agent blocks into the high-frequency induction melting furnace, heat until completely melted, keep warm and stir, add copper-nickel alloy, copper-strontium alloy, copper-indium alloy, magnesium strip and rare earth elements Lanthanum, heated to 1250°C, stirred and smelted to obtain copper alloy melt;

[0036] S2, carry out composition detection to copper alloy melt, it comprises by weight percentage: Ni 0.3%, Fe 3.5%, Sr0.15%, In 0.05%, Mg 0.25%, La 0.02%, balance is copper;

[0037] S3. Drain the copper alloy solution obtained in S2 to the high-vacuum single-roller spin quenching and spray-casting system, and introduce protective gas until the vacuum degree is 6×10 -5 Pa, heat to 950°C for spray casting, the roller speed is 35m / min, stop the copper roller rotation after it is completely cooled, and pa...

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Abstract

The invention discloses a high-temperature-resistant, high-strength and beryllium-copper-free wire and a preparation method thereof. The preparation method comprises steps: S1, high-purity copper, pure iron and a block-shaped covering agent are mixed, molten, kept at the constant temperature and stirred, a copper-nickel alloy, a copper-strontium alloy, a copper-indium alloy, magnesium rods and rare earth element lanthanum are added, the mixture is heated to 1,230-1,260 DEG C, stirred and molten, and copper alloy melt is obtained; S2, component detection is performed on the copper alloy melt; S3, the copper alloy melt obtained in S2 is introduced into a high-vacuum single-roll rotary quenching and spray casting system and heated to 950-970 DEG C for spray casting, air is introduced after cooling, and a thin strip is obtained after balance of atmospheric pressure; S4, the thin strip is subjected to continuous annealing and homogenization in a magnetic field under the condition of 590-630 DEG C, and the high-temperature-resistant, high-strength and beryllium-copper-free wire is obtained through cold rolling and ageing treatment. With the iron-copper alloy as a basis, multiple alloy elements are added in a matched manner to replace conventional beryllium copper alloy materials, the cost is reduced, a reasonable preparation process is matched, and the comprehensive performance of the material is improved.

Description

technical field [0001] The invention relates to the technical field of beryllium-free copper wires, in particular to a high-temperature-resistant high-strength beryllium-free copper wire and a preparation method thereof. Background technique [0002] At present, the high-strength copper wires used for welding machine electrodes, low-pressure casting molds, and turbo generator slot wedges are mainly beryllium-cobalt-copper and beryllium-nickel-copper series. CuNi was developed to save beryllium and cobalt resources and reduce costs. 2 Alloys such as SiCr, but there is still a big gap in comprehensive performance, especially high-temperature resistance. The alloying and processing technology development of beryllium-free copper alloy materials is still a hot and difficult research topic in this field. Therefore, on the basis of traditional copper alloy materials, it is necessary to further improve the performance of copper alloys, especially the high temperature resistance, by...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C1/03C22F1/08B22D11/06H01B1/02H01B13/00
CPCB22D11/06C22C1/03C22C9/00C22F1/08H01B1/026H01B13/00
Inventor 潘加明
Owner 安徽晋源铜业有限公司
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