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Preparation method for AL-Cu alloy circular aluminum rods

A technology of round aluminum rods and alloys, applied in the direction of metal rolling, etc., can solve the problems of difficult to realize long-distance high-voltage power transmission with large spans, large losses, and large sag of cables, and achieve long-distance high-voltage power transmission with large spans , the effect of reducing loss

Inactive Publication Date: 2018-08-31
安徽润藤电缆材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the widely used round aluminum rods for electrical engineering 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. Especially not suitable for use in frozen alpine areas
However, the tensile strength of the existing 6101 and 6201 alloy round aluminum rods is 160-200MPa, but the resistivity of the product is 36nΩ.m. The resistivity is high and the loss is large during power transmission. It is difficult to realize large-span long-distance high-voltage transmission

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of an AL-Cu alloy round aluminum rod, comprising the steps of:

[0023] (1) Install aluminum liquid with an aluminum content of more than 99.5% in the aluminum melting furnace;

[0024] (2) Add 1 kg of industrial silicon, 5 kg of iron agent with 75% iron content and 3 kg of copper agent with 75% copper content for every ton of aluminum liquid;

[0025] (3) After standing for 10-20 minutes, add 3kg of rare earth alloy and 4.5kg of aluminum shed alloy;

[0026] (4) passing the raw material obtained in step (3) into a melting furnace to refine into an alloy solution, and picking up the slag on the surface of the alloy solution, and passing the alloy solution into a holding furnace filled with nitrogen to keep warm, and adding a purification flux;

[0027] (5) transporting the alloy solution in step (4) to a continuous casting machine, and casting it into an alloy ingot;

[0028] (6) the alloy ingot obtained through step (5) is rolled into an Al-Cu al...

Embodiment 2

[0036] A preparation method of an AL-Cu alloy round aluminum rod, comprising the steps of:

[0037] (1) Install aluminum liquid with an aluminum content of more than 99.5% in the aluminum melting furnace;

[0038] (2) Add 1kg of industrial silicon, 5kg of iron agent with 75% iron content and 3kg of copper agent with 75% copper content per ton of aluminum liquid;

[0039] (3) After standing for 10-20 minutes, add 3kg of rare earth alloy and 4.5kg of aluminum shed alloy;

[0040] (4) passing the raw material obtained in step (3) into a melting furnace to refine into an alloy solution, and picking up the slag on the surface of the alloy solution, and passing the alloy solution into a holding furnace filled with nitrogen to keep warm, and adding a purification flux;

[0041] (5) transporting the alloy solution in step (4) to a continuous casting machine, and casting it into an alloy ingot;

[0042] (6) the alloy ingot obtained through step (5) is rolled into an Al-Cu alloy round...

Embodiment 3

[0050] A preparation method of an AL-Cu alloy round aluminum rod, comprising the steps of:

[0051] (1) Install aluminum liquid with an aluminum content of more than 99.5% in the aluminum melting furnace;

[0052] (2) Add 1 kg of industrial silicon, 5 kg of iron agent with 75% iron content and 3 kg of copper agent with 75% copper content for every ton of aluminum liquid;

[0053] (3) After standing for 10-20 minutes, add 3kg of rare earth alloy and 4.5kg of aluminum shed alloy;

[0054] (4) passing the raw material obtained in step (3) into a melting furnace to refine into an alloy solution, and picking up the slag on the surface of the alloy solution, and passing the alloy solution into a holding furnace filled with nitrogen to keep warm, and adding a purification flux;

[0055] (5) transporting the alloy solution in step (4) to a continuous casting machine, and casting it into an alloy ingot;

[0056] (6) the alloy ingot obtained through step (5) is rolled into an Al-Cu al...

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Abstract

The invention discloses a preparation method forAL-Cu alloy circular aluminum rods. The preparation method comprises the following steps that an aluminum furnace is filled with aluminum liquid with the aluminum content being 99.5% or above; 1 kg of elemental silicon, 5 kg of iron agents with the iron content being 75% and 3 kg of copper agents with the copper content being 75% are added in per tonof the aluminum liquid; still standing is conducted for 10-20 min, and then 3 kg of rare earth alloys and 4.5 kg of aluminum-boron alloys are added; raw materials are led into the furnace to be smelted into alloy solution; the alloy solutionis delivered to a continuous casting machine and is casted into alloy ingots; the alloy ingots are rolled into the Al-Cu alloy circular aluminum rods througha continuous rolling machine; the rolled Al-Cu alloy circular aluminum rods are treated through a cleaning cooling pipeline; then the Al-Cu alloy circular aluminum rods are transferred to a rod winderto be wound; and packaging and checking are conducted, the AL-Cu alloy circular aluminum rods are sent out through a travelling vehicle, weighed and stored in a warehouse. The tensile strength of thealloy aluminum rods obtained by the preparation method reaches 160-200 MPa, and meanwhile the resistance rate can be controlled to be 29.0 n omega.m or below; and the elongation meets the requirementof aluminum rod tensioning, the loss in the power transmission process is greatly reduced, and large-span and long-distance high-voltage power transmission can be achieved.

Description

technical field [0001] The invention relates to a production process of an alloy aluminum rod, in particular to a preparation method of an AL-Cu alloy round aluminum rod. Background technique [0002] Alloy round aluminum rods for electrical purposes are mainly used as raw materials for wires and cables, and the product performance indicators that need to be mainly controlled are tensile strength, elongation, and resistivity. Resistivity affects the conductive effect of wire and cable, mainly determined by the chemical composition of the material and the content of air slag. The increase of impurity elements and air slag content will increase the resistivity, which is not conducive to the control of product quality: elongation, affecting electrician Round aluminum rod drawing processing performance, large elongation, easy drawing processing, high production efficiency: the tensile strength affects the power transmission and overhead performance of the drawn wire and cable, a...

Claims

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Application Information

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IPC IPC(8): C22C21/12C22C1/03B21B1/46
CPCC22C21/12B21B1/463C22C1/026C22C1/03
Inventor 夏江平吴万松
Owner 安徽润藤电缆材料科技有限公司
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