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High-conductivity medium-strength all-aluminum alloy energy-saving guide wire and manufacturing method thereof

A technology of aluminum alloy wire and high conductivity, which is applied in the field of aluminum-based alloys and can solve the problems of reducing the tensile strength, strength, and conductivity of wires, etc.

Active Publication Date: 2020-01-31
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have found that appropriate amount of rare earth and silicon elements can increase the tensile strength of Al-Fe hard-drawn aluminum wire but slightly reduce the conductivity; adding rare earth elements to Al-Fe-Mg aluminum alloy not only reduces the tensile strength of the wire but also reduces the electrical conductivity. It also reduces the electrical conductivity; adding the alloying element Zr to the Al-Fe-Mg series aluminum alloy will improve the conductivity of the Al-Fe-Mg series alloy, but reduce the strength; adding rare earth elements to the Al-Cu-Mg series aluminum alloy It can improve the conductivity of aluminum alloy, but the strength is reduced

Method used

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  • High-conductivity medium-strength all-aluminum alloy energy-saving guide wire and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] High-conductivity medium-strength all-aluminum alloy energy-saving conductor is made of twisted multi-layer aluminum alloy monofilament. The multi-layer aluminum alloy monofilament consists of a core layer, a first layer, a second layer and a third layer. Aluminum alloy monofilament, the first layer is 6 aluminum alloy monofilaments, the second layer is 12 layers of aluminum alloy monofilament, the third layer is 18 layers of aluminum alloy monofilament, and the aluminum alloy monofilament is composed of the following mass percentage: Mg0. 40, Si0.38, Zr0.12, Ti0.08, V0.05, La0.04, Ce0.06, B0.09, Mg / Si=1.05, the rest are Al and unavoidable impurities, unavoidable impurities The total amount is less than 0.05%.

[0029] Among them, unavoidable impurities include Mn, Cr, Fe and other elements, and the mass percentage of a single impurity is less than 0.03%.

[0030] A method for preparing a medium-strength all-aluminum alloy energy-saving wire with high conductivity, inc...

Embodiment 2

[0044] The high-conductivity medium-strength all-aluminum alloy energy-saving wire described in this embodiment is different from the embodiment 1 in that: the aluminum alloy monofilament is composed of the following components in mass percentage: Mg0.60, Si0.45, Zr0.15, Ti0.10, V0.06, La0.05, Ce0.08, B0.10, Mg / Si=1.33, the rest are Al and unavoidable impurities, the total amount of unavoidable impurities is less than 0.05%.

[0045] A method for preparing a medium-strength all-aluminum alloy energy-saving wire with high conductivity, including:

[0046] 1) Melting Al source, Mg source, Si source, Zr source, Ti source, V source, La source, Ce source and B source to obtain alloy liquid;

[0047] 2) Casting the alloy liquid to obtain an aluminum alloy ingot;

[0048] 3) Roll the aluminum alloy ingot, the rolling temperature is 520°C, and the rod output temperature is 90°C to obtain the rod;

[0049] 4) The rod is subjected to solution treatment at 400°C for 2 hours, and then w...

Embodiment 3

[0057] The high-conductivity medium-strength all-aluminum alloy energy-saving wire described in this example is different from Example 1 in that: the aluminum alloy monofilament is composed of the following components in mass percentage: Mg0.50, Si0.35, Zr0.13, Ti0.06, V0.07, La0.06, Ce0.07, B0.08, Mg / Si=1.43, the rest are Al and unavoidable impurities, the total amount of unavoidable impurities is less than 0.05%.

[0058] A method for preparing a medium-strength all-aluminum alloy energy-saving wire with high conductivity, including:

[0059] 1) Melting Al source, Mg source, Si source, Zr source, Ti source, V source, La source, Ce source and B source to obtain alloy liquid;

[0060] 2) Casting the alloy liquid to obtain an aluminum alloy ingot;

[0061] 3) Roll the aluminum alloy ingot, the rolling temperature is 530°C, and the rod output temperature is 90°C to obtain the rod;

[0062] 4) The rod is subjected to solution treatment at 420°C for 1 hour, and then water quench...

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Abstract

The invention relates to a high-conductivity medium-strength all-aluminum alloy energy-saving guide wire and a manufacturing method thereof, and belongs to the technical field of aluminum-based alloys. The high-conductivity medium-strength all-aluminum alloy energy-saving guide wire is twisted from multi-layer aluminum alloy monofilaments, wherein each aluminum alloy monofilament consists of the following components in percentage by mass: 0.35-0.80% of Mg, 0.21-0.60% of Si, 0.10-0.20% of Zr, 0.06-0.12% of Ti, 0.03-0.08% of V, 0.02-0.06% of La, 0.05-0.10% of Ce, 0.05-0.12% of B, and the balanceAl and inevitable impurities, wherein Mg / Si is lower than or equal to 1.73, and the total amount of the inevitable impurities is smaller than 0.05%. The aluminum alloy guide wire product performancemeets requirements of Q / GDW1816-2012 Medium-Strength Aluminum Alloy Stranded Wire, the conductivity of the aluminum alloy guide wire is higher than that of a common medium-strength aluminum alloy guide wire, and line loss can be remarkably reduced.

Description

technical field [0001] The invention belongs to the technical field of aluminum-based alloys, and in particular relates to a high-conductivity medium-strength all-aluminum alloy energy-saving wire and a preparation method thereof. Background technique [0002] Aluminum alloy is one of the most widely used wire and cable raw materials due to its good electrical conductivity, high specific strength, good ductility and good processing performance. All-aluminum alloy conductor (AAAC) is a kind of overhead conductor widely used in foreign countries. This conductor is all composed of aluminum alloy conductors. Medium-strength all-aluminum alloy wire refers to an aluminum alloy stranded wire made of aluminum alloy monofilament with a tensile strength of 230~265MPa. The use of medium-strength all-aluminum alloy conductors (AAAC) on ultra-high voltage and ultra-high voltage transmission lines has the following advantages over the currently commonly used aluminum steel core stranded ...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C21/08C22C1/02C22F1/04C22F1/047C22F1/05C22C1/03H01B1/02B21C37/04
CPCB21C37/047C22C1/026C22C1/03C22C21/00C22C21/08C22F1/002C22F1/04C22F1/047C22F1/05H01B1/023
Inventor 耿进锋史宏伟李红英史晨昱时洪飞肖寒马磊张武能汪毅崔大田
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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