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Preparation method of Al-Zr-RE alloy round aluminum rod

The technology of a round aluminum rod and a preparation method is applied in the field of aluminum alloy materials, which can solve the problems of low tensile strength, large cable sag, and self-heavy weight, and achieves the advantages of improving utilization rate, small sag and saving construction cost. Effect

Inactive Publication Date: 2015-04-08
YUNNAN ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the electrical round aluminum rods widely produced in China belong to the pure aluminum series, and the tensile strength is not high. Most of the wires and cables for power transmission are steel-cored aluminum stranded wires. High temperature, especially not suitable for use in frozen alpine areas

Method used

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  • Preparation method of Al-Zr-RE alloy round aluminum rod
  • Preparation method of Al-Zr-RE alloy round aluminum rod
  • Preparation method of Al-Zr-RE alloy round aluminum rod

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A preparation method of an Al-Zr-RE alloy round aluminum rod, comprising the steps of:

[0032] (1) Install aluminum liquid with a mass fraction of more than 99.60% of aluminum in the aluminum smelting furnace according to the production demand, so that the temperature is controlled at 750-780°C;

[0033] (2) Add zirconium agent and rare earth alloy when calculating the concentration, so that the mass fraction of zirconium is controlled between 0.06 and 0.18%, and the mass fraction of rare earth is controlled between 0.10 and 0.25%. In order to ensure that the aluminum alloy is fully alloyed, Keep the furnace temperature at 750-780°C for more than 1 hour, and carry out electromagnetic stirring at the same time, and determine that the content of zirconium and rare earth meets the requirements by sending the "samples before the furnace" to analyze the chemical composition.

[0034] (3) After the zirconium and rare earth are fully melted, add industrial silicon, iron and a...

Embodiment 2

[0045] A preparation method of an Al-Zr-RE alloy round aluminum rod, comprising the steps of:

[0046] (1) Install aluminum liquid with a mass fraction of more than 99.60% aluminum in the aluminum smelting furnace according to the production demand, so that the temperature is controlled at 750-760 °C;

[0047](2) Add zirconium agent and rare earth alloy when calculating the concentration, so that the mass fraction of zirconium is controlled between 0.06 and 0.18%, and the mass fraction of rare earth is controlled between 0.10 and 0.25%. In order to ensure that the aluminum alloy is fully alloyed, Keep the furnace temperature at 770-780°C for more than 1 hour, and carry out electromagnetic stirring at the same time, and determine the content of zirconium and rare earths to meet the requirements by sending "samples before the furnace" to analyze the chemical composition.

[0048] (3) After the zirconium and rare earth are fully melted, add industrial silicon, iron and aluminum-b...

Embodiment 3

[0055] A preparation method of an Al-Zr-RE alloy round aluminum rod, comprising the steps of:

[0056] (1) Install aluminum liquid with a mass fraction of more than 99.60% aluminum in the aluminum smelting furnace according to the production demand, so that the temperature is controlled at 760-780 °C;

[0057] (2) Add zirconium agent and rare earth alloy when calculating the concentration, so that the mass fraction of zirconium is controlled between 0.06 and 0.18%, and the mass fraction of rare earth is controlled between 0.10 and 0.25%. In order to ensure that the aluminum alloy is fully alloyed, Keep the furnace temperature at 750-770°C for more than 1 hour, and carry out electromagnetic stirring at the same time, and determine that the content of zirconium and rare earth meets the requirements by sending the "samples before the furnace" to analyze the chemical composition.

[0058] (3) After the zirconium and rare earth are fully melted, add industrial silicon, iron and alu...

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Abstract

The invention relates to a preparation method of an Al-Zr-RE alloy round aluminum rod and belongs to the technical field of aluminum alloy materials. In the production of the round aluminum rod, according to the preparation method, a proper amount of zirconium and rare earth is added to the smelting process of pure aluminum liquid to obtain an Al-Zr-RE alloy; the Al-Zr-RE alloy is formed into the aluminum alloy round rod by virtue of the production process of smelting, standing, casting, rolling and the like; an aluminum alloy conductor formed by use of the aluminum alloy round rod by drawing is extremely low in sag when working at a relatively high temperature for a long time because the tensile strength retention rate of the conductor is kept above 90%, and therefore, the conductor can be used as a long-span overhead conductor; besides, the power transmission capacity of the conductor is greatly improved, the utilization rate of the aluminum is increased and the construction cost is relatively saved.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy materials, and in particular relates to a method for preparing an Al-Zr-RE alloy round aluminum rod. Background technique [0002] In the production of electrical round aluminum rods, the products have three major quality indicators, one of which is resistivity, which affects the conductive effect of wires and cables, mainly determined by the chemical composition of materials, especially the impurity elements in aluminum alloys such as silicon, iron, vanadium, Titanium, manganese, chromium, etc., the increase of their content will increase the resistivity, which is not conducive to the control of product quality; the other two indicators are tensile strength and elongation, which will affect the quality of electrical round aluminum rods drawn into wires and cables. Power transmission and overhead performance, large elongation, easy drawing processing, high production efficiency, high tensil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C21/00
Inventor 鲁俐田光辉王进录罗建华木群花邓瑜李明王孟金杨亚伟高颖李全
Owner YUNNAN ALUMINUM
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