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High-elongation rate aluminum alloy material for cable and preparation method thereof

a technology of aluminum alloy and cable, which is applied in the field of nonferrous metal materials, can solve the problems of limited wire and cable development, and achieve the effect of improving reducing the conductivity of aluminum alloy

Inactive Publication Date: 2012-08-23
ANHUI JOY SENSE CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention provides an aluminum alloy material with high elongation for cables that can meet the demand for wires and cables with improved elongation, flexibility, and stability. The alloy material has controlled amounts of Fe, Si, rare earth elements, and other impurities, and is prepared through a fusion casting process. The alloy material has high strength, creek resistance, and thermal stability, and is favorable for processing. The rare earth elements reduce the influence of Fe and Si on conductivity, and improve the crystal structure and processing properties of the alloy material. The alloy material is also conductive and flexible, with high elongation and flexibility compared to copper cables."

Problems solved by technology

However, owing to the rare copper resource, high price of copper material, and high installation cost of copper cables, the development of wires and cables is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

embodiment 1

[0019]I. Fusion Casting Process

[0020]1. Material Proportioning

[0021]5100 kg aluminum ingot (contains 0.07% Si and 0.13% Fe), 40.4 kg Al—Fe alloy (contains 22% Fe), 5.6 kg rare earth alloy (contains 10% rare earth elements), 8.8 kg B—Al alloy (contains 3.5% B), and 2.3 kg refining agent (23% Na3Al.F6+47% KCl+30% NaCl).

[0022]2. Feeding Method

[0023]During material feeding, feed the Al—Fe alloy into the cupola furnace in batches evenly with the aluminum ingots, to ensure the components can be distributed evenly as far as possible.

[0024]3. Heat Preservation Process

[0025]When the aluminum alloy liquid flows into the holding furnace, control the furnace temperature at 710˜750° C. ; when rare earth-Al alloy and B—Al alloy are added into the aluminum alloy liquid, the furnace temperature is increased to 720˜760° C., and not higher than 760° C. Here, increasing the temperature is favorable for melting of the rare earth-Al alloy and B˜Al alloy, and thereby the treatment effect of rare earth el...

embodiment 2

[0052]I. Fusion Casting Process

[0053]1. Material Proportioning

[0054]5110 kg aluminum ingot (contains 0.10% Si and 0.13% Fe), 258 kg Al—Fe alloy (contains 23.2% Fe), 166.5 kg rare earth alloy (contains 9.8% rare earth elements), 10 kg B—Al alloy (contains 3.3% B), and 2.3 kg refining agent (23% Na3Al.F6+47% KCl+30% NaCl).

[0055]2. Feeding Method

[0056]During material feeding, feed the Al—Fe alloy into the cupola furnace in batches evenly with the aluminum ingots, to ensure the components can be distributed evenly as far as possible.

[0057]3. Heat Preservation Process

[0058]When the aluminum alloy liquid flows into the holding furnace, control the furnace temperature at 710˜750° C.; when rare earth-Al alloy and B—Al alloy are added into the aluminum alloy liquid, the furnace temperature is increased to 720˜760° C., and not higher than 760° C. . Here, increasing the temperature is favorable for melting of the rare earth-Al alloy and B—Al alloy, and thereby the treatment effect of rare eart...

embodiment 3

[0086]I. Fusion Casting Process

[0087]1. Material Proportioning

[0088]5125 kg aluminum ingot (contains 0.12% Si and 0.12% Fe), 107 kg Al—Fe alloy (contains 21.9% Fe), 118 kg rare earth alloy (contains 10.1% rare earth elements), 14.8 kg B—Al alloy (contains 3.0% B), and 2.8 kg refining agent (23% Na3Al.F6+47% KCl+30% NaCl).

[0089]2. Feeding Method

[0090]During material feeding, feed the Al—Fe alloy into the cupola furnace in batches evenly with the aluminum ingots, to ensure the components can be distributed evenly as far as possible.

[0091]3. Heat Preservation Process

[0092]When the aluminum alloy liquid flows into the holding furnace, control the furnace temperature at 710˜750° C. ; when rare earth-Al alloy and B—Al alloy are added into the aluminum alloy liquid, the furnace temperature is increased to 720˜760° C., and not higher than 760° C. . Here, increasing the temperature is favorable for melting of the rare earth-Al alloy and B—Al alloy, and the treatment effect of rare earth elem...

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Abstract

A high-elongation rate aluminum alloy material and preparation method thereof. The high-elongation aluminum alloy material contains, in weight percentage, 0.30-1.20% of iron, 0.03-0.10% of silicon, 0.01-0.30% of rare earth elements, namely cerium and lanthanum, and the remaining aluminum and inevitable impurities. The aluminum alloy is made from materials through a fusion casting process and a half-annealing treatment. An aluminum alloy conductor made thereof has a high-elongation rate and good safety and stability in use.

Description

FIELD OF THE INVENTION [0001]The present invention pertains to the field of nonferrous metal materials, in particular to an aluminum alloy material with high elongation for cables and a preparation method for the same.BACKGROUND OF THE INVENTION[0002]Presently, most wires and cables employ copper as the conductor. However, owing to the rare copper resource, high price of copper material, and high installation cost of copper cables, the development of wires and cables is limited. Due to the fact of abundant aluminum resource and low cost of aluminum material, it will be a trend to replace copper with aluminum as the conductor for wires and cables.DISCLOSURE OF THE INVENTIONTechnical Problem[0003]However, if conventional EC-aluminum is used as conductor to replace copper, the elongation, flexibility, and creep resistance of wires and cables are poor, and the safety and stability of use are unsatisfactory. Therefore, replacing copper with conventional EC-aluminum as conductor can not m...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C22F1/04C22C21/00
CPCB22D21/007C21D1/26C22F1/04C22C1/06C22C21/00C22C1/00
Inventor LIN, ZEMINYU, LEHUAWAN, YOUMEI
Owner ANHUI JOY SENSE CABLE
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