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Solid aluminum alloy conductor and preparation method thereof

A technology of aluminum alloy conductors and aluminum alloys, which can be used in cable/conductor manufacturing, electrical components, circuits, etc., and can solve problems such as poor oxidation resistance.

Active Publication Date: 2013-06-12
ANHUI NANYANG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This aluminum alloy has good toughness, but due to the internal structure of the aluminum conductor, the oxidation resistance is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] The preparation method of the solid aluminum alloy conductor comprises the following steps:

[0026] 1) Melting, casting and rolling

[0027] a) Raise the temperature of the aluminum alloy melting furnace to 780°C and above, cease fire and stop heating, quickly add aluminum ingots with an aluminum content of 99.70% and above into the aluminum alloy melting furnace, then close the furnace door and start the fire again; when the aluminum ingots When it is completely melted and the temperature rises to 820°C or above, stop heating and use a special tool to add magnesium ingots, iron-aluminum alloys, copper-aluminum alloys, zinc-aluminum alloys, and silicon-aluminum alloys with a certain weight composition of 99.995% and above in succession. In the aluminum alloy melting furnace, after it is completely melted, add boron aluminum alloy and rare earth aluminum alloy one after another, and after the boron aluminum alloy and rare earth aluminum alloy are melted, start the perma...

Embodiment 1

[0037] According to the above detailed method, first add two tons of aluminum ingots, magnesium ingots and corresponding aluminum alloys with 0.40% iron, 0.05% copper, 0.05% silicon, 0.02% zinc, 0.01% magnesium, and 0.02% rare earth Minimal proportion of elements added, smelting, casting, rolling, aging, extrusion, heat treatment. The corresponding process level is designed according to the previous design, and the obtained data is designed for aluminum alloy rods with a diameter of 9.50 mm. The strength of the aluminum alloy rod is 123 MPa, the elongation is 12%, and the resistivity is 0.02865 ohm.square millimeter per meter. Extrude the aluminum alloy rod into a conductor of 25 square millimeters, put it into an annealing furnace, and raise the temperature to 320°C for 4 hours. After cooling, the conductor resistance is 1.18 ohms per kilometer, the strength is 90MPa, and the elongation is 29%.

Embodiment 2

[0039] According to the aforementioned detailed method, add two tons of aluminum ingots, magnesium ingots and corresponding aluminum alloy ingots with 1.00% iron, 0.20% copper, 0.10% silicon, 0.12% zinc, 0.05% magnesium, and 0.12% rare earth elements Add the highest proportion of smelting, casting, rolling, aging extrusion heat treatment. The waiting test data is that the aluminum alloy rod is 9.50㎜, the strength of the aluminum alloy rod is 135MPa, the elongation is 9%, and the resistivity is 0.02884 ohm square millimeter per meter. Extrude the aluminum alloy rod into a conductor of 150 square millimeters, put it into an annealing furnace, raise the temperature to 380°C, and keep it warm for 6 hours. After cooling, the conductor resistance is 0.200 ohms per kilometer, the strength is 93MPa, and the elongation is 25%.

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Abstract

The invention provides a solid aluminum alloy conductor and a preparation method thereof. The solid aluminum alloy conductor contains by weigh 0.40-1.00% of iron, 0.05-0.20% of copper, 0.05-0.10% of silicon, 0.02-0.12% of zinc, 0.01-0.05% of magnesium, 0.02-0.12% of rare earth element and the balance of aluminum and unavoidable impurities. The method comprises steps of: completely melting an aluminum ingot; adding a magnesium ingot with a special tool; after melting, sequentially adding manganese aluminum alloy, zinc aluminum alloy, copper aluminum alloy, iron aluminum alloy, silicon aluminum alloy and rare earth aluminum alloy of different weights; fully mixing, refining and conducting ladle analysis; after qualification of all components, casting and rolling into a required aluminum alloy rod; conducting aging treatment; extruding the required solid core conductor according to the requirements; conducting special heat treatment to reach corresponding performance indicators, so as to meet the need to substitute a traditional copper core electrical wire of electrical wire materials.

Description

technical field [0001] The invention relates to the field of manufacturing technology in the electrical industry, in particular to a solid-core aluminum alloy conductor that can replace traditional copper-core wires and cables and a preparation method thereof. Background technique [0002] Aluminum alloy wires began to be used for overhead lines in 1921. Due to their high strength, light weight, and good electrical conductivity (various brands of aluminum alloys have different performance characteristics), they are widely used and have gained good economic benefits. Effect. The production of aluminum alloy wires in my country has undergone several equipment and process reforms, and the product performance has also reached the requirements of IEC, JEC and other standards, and is used on overhead lines. However, due to various reasons, the current use of aluminum alloy wires in power transmission and distribution lines in my country only accounts for about 7%, while aluminum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00H01B13/00
Inventor 叶明高叶卓俊
Owner ANHUI NANYANG NEW MATERIAL TECH CO LTD
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