Rare earth element doped aluminum alloy conductor of circuit cable and manufacturing method

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 small defects, Improved electrical properties and less deformation

Active Publication Date: 2019-08-13
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 conductor of circuit cable and manufacturing method

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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 in 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 is Al and unavoidable impurities, and the total content of impurities is less than 0.01%;

[0032] 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 cable core materials with the same diameter, 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 in mass percentage: Cu 0.02%, Fe 0.3%, 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 of 8 cable core materials with the same diameter twisted together.

Embodiment 3

[0039] This embodiment is the manufacturing method of the rare earth element-doped aluminum alloy wire of the described circuit cable, comprising the following steps:

[0040] Alloy preparation:

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

[0042] Rolling of aluminum rings:

[0043] Add the rare earth doped aluminum alloy stock solution to the continuous casting and rolling mill, roll the rare earth doped aluminum alloy stock solution 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 to 100 degrees Celsius the following;

[0044] Wherein 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] Str...

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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] The aluminum alloy power cable is a new material power cable with AA8030 series aluminum alloy material as the conductor, and adopts advanced technology such as special roll-formed wire stranding production process and annealing treatment. Alloy power cables make up for the deficiencies of pure aluminum cables in the past. Although the electrical conductivity of the cables has not been improved, the bending performance, creep resistance and corrosion resistance have been greatly improved, which can ensure that the cables remain continuous when they are 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 at the same time solve the proble...

Claims

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Application Information

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Patent Type & Authority Applications(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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