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Rare earth element-doped aluminum alloy wire for circuit cable and manufacturing method thereof

A technology of aluminum alloy wires and rare earth elements, which is applied in the direction of cable/conductor manufacturing, metal/alloy conductors, circuits, etc., can solve the problems of uncontrollable shape of cables, loss of electrical performance, and difficult temperature control, etc., and achieve repair of tiny defects, Improved electrical properties and less deformation

Active Publication Date: 2020-06-05
友光电线电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This preparation method has certain defects. First, it is often difficult to control the temperature during continuous casting and rolling. Second, it is often difficult to control the shape of the drawn cable when it is twisted.
In addition, the current aluminum alloy cables have more or less loss of electrical properties after doping

Method used

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  • Rare earth element-doped aluminum alloy wire for circuit cable and manufacturing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment is a rare earth element doped aluminum alloy wire for a circuit cable, which is characterized in that the cable core material is composed of the following components by mass percentage: Cu 0.02-0.03%, Fe 0.2-0.5%, Si 0.2-0.3%, Ag 0.01~0.03%, Li0.02~0.03%, RE 0.2~0.3%, the rest are Al and unavoidable impurities, and the total content of impurities is less than 0.01%;

[0032] Wherein the composition of RE is: one or more of La, Pm, Eu and one or more of Gd, Lu, Sc;

[0033] The cable is made of 5-10 twisted with the same diameter cable core material, and the cable is hot rolled twice.

Embodiment 2

[0035] This embodiment further defines that the cable core material is composed of the following components by mass percentage: Cu 0.02%, Fe0.3%, Si 0.2%, Ag 0.02%, Li 0.03%, RE 0.3%, and the rest are Al and unavoidable impurities , wherein the total content of impurities is less than 0.01%;

[0036] The components of RE are: La, Pm, Eu, Gd, Lu, Sc; the content of each component in RE is the same.

[0037] The cable is made up of 8 cables with the same diameter twisted together.

Embodiment 3

[0039] The present embodiment is a method for manufacturing the rare earth element doped aluminum alloy wire of the circuit cable, which includes the following steps:

[0040] Preparation of alloy material:

[0041] Mix and melt aluminum-iron alloy, aluminum-copper alloy, aluminum-lithium alloy, aluminum-silver alloy, rare earth RE and silicon at 750-800 degrees Celsius, and stir well to obtain rare-earth-doped aluminum alloy stock solution;

[0042] Rolling of aluminum rings:

[0043] Add the rare earth doped aluminum alloy dope into the continuous casting and rolling mill, roll the rare earth doped aluminum alloy dope into a spiral aluminum ring with a wire diameter of 5-10mm, the diameter of the aluminum ring is 0.8-1.5m, and cool it to 100 degrees Celsius the following;

[0044] The wire diameter section of the aluminum ring is oval, and the curvature on the outside of the aluminum ring is smaller than the curvature on the inside of the aluminum ring;

[0045] Straighte...

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Abstract

The invention relates to a rare earth element doped aluminum alloy conductor of a circuit cable and a manufacturing method. Cu and Fe are doped in an aluminum alloy conductor, so that the thermal stability and the mechanical strength of the conductor are greatly improved; Ag is doped, so that the electrical property of the conductor is improved; the doping of rare earth elements is carried out, sothat the mechanical property of the conductor cannot be greatly lost under the doping condition, and the performance is ensured. In addition, the secondary hot rolling is carried out during the manufacturing of the conductor, so that the mechanical property of the conductor is stronger, the brittleness is reduced, tiny defects are repaired, and the conductor is not liable to break; the conductoris made into an aluminum ring with the oval cross section before secondary hot rolling, so that the conductor can ensure the transportation performance, the secondary hot rolling can be conveniently carried out, and the deformation amount is small. The conductor is firstly subjected to mutual twisting forming, so the forming shape stability can be guaranteed and the forming effect can be conveniently monitored; drawing is conducted after mutual twisting, so the shape stability of the wires after drawing can be improved.

Description

technical field [0001] The invention relates to the field of cables, in particular to a rare earth element-doped aluminum alloy wire of a circuit cable. Background technique [0002] Aluminum alloy power cable is a new type of power cable with AA8030 series aluminum alloy material as conductor, using special roll forming wire stranding production process and advanced technology such as annealing treatment. Alloy power cables make up for the shortcomings of previous pure aluminum cables. Although the electrical conductivity of the cable is not improved, the bending performance, creep resistance and corrosion resistance are greatly improved, which can ensure that the cable maintains continuity when overloaded and overheated for a long time. Stable performance, the use of AA-8030 series aluminum alloy conductors can greatly improve the conductivity and high temperature resistance of aluminum alloy cables, and solve the problems of pure aluminum conductors [1] and creep. The el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/02H01B13/00H01B13/008H01B13/02
CPCH01B1/023H01B13/00H01B13/008H01B13/02
Inventor 邢如满邢志博邢钧钧
Owner 友光电线电缆有限公司
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