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A preparation method of high-strength aluminum alloy wire for energy-saving wires

An aluminum alloy wire, high-strength technology, applied in the direction of metal/alloy conductors, conductors, conductive materials, etc., can solve the problems that the electrical conductivity cannot meet the requirements and the strength cannot meet the requirements.

Active Publication Date: 2017-11-07
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-strength aluminum alloy wire produced under the existing domestic technical conditions usually has the phenomenon that the strength meets the requirements, but the conductivity cannot meet the requirements, or the conductivity meets the requirements but the strength does not meet the requirements. The mechanism is attributed to the inversion of strength and conductivity. relation

Method used

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  • A preparation method of high-strength aluminum alloy wire for energy-saving wires
  • A preparation method of high-strength aluminum alloy wire for energy-saving wires
  • A preparation method of high-strength aluminum alloy wire for energy-saving wires

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preparation example Construction

[0094] The preparation method of the present invention specifically comprises the following process steps:

[0095] (1) Heat treatment process of high-strength aluminum rod:

[0096] That is, pre-solution treatment. First, a hot-rolled aluminum rod with a diameter of 9.5 (±0.1) mm is selected, and its composition range is: Si: 0.57-0.74%; Fe: 0.2-0.3%; Cu: 0.01-0.03%; Mg: 0.63-0.7%; Zn: ≦0.05%; Ti:≦0.015%; the micro-Vickers hardness range of the aluminum rod is 60-70HV.

[0097] Secondly, randomly take radial sections at 3 places on the original aluminum rod as samples, and the Brinell hardness range: HBS: 100-200.

[0098] Finally, heat treatment is performed on the original aluminum rod: the temperature is 530°C-540°C, the high-strength aluminum alloy wire enters the heat treatment furnace for 5 minutes to start timing, and the holding time is 3.8 hours to 4.2 hours. The sample taken out is not allowed to stay in the air and must be quickly immersed in water for quenching ...

Embodiment 1

[0122] A method for preparing high-strength aluminum alloy wire for energy-saving wires, specifically comprising the following process steps:

[0123] (1) Heat treatment process of high-strength aluminum rod:

[0124] That is, pre-solution treatment. First, a hot-rolled aluminum rod with a diameter of 9.5 mm is selected, and its composition range is: Si: 0.64%; Fe: 0.25%; Cu: 0.02%; Mg: 0.68%; Zn: 0.02%; Ti: 0.015%.

[0125] Secondly, randomly take three radial sections on the original aluminum rod as samples, and the micro-Vickers hardness range: 60HV.

[0126] Finally, heat treatment is performed on the original aluminum rod: the temperature is 540°C, the high-strength aluminum alloy wire enters the heat treatment furnace for 5 minutes and the timing starts, and the holding time is 4 hours. .

[0127] (2) High-strength aluminum wire drawing process:

[0128] That is, cold drawing process. The production of high-strength aluminum wire with a diameter of 3mm has been draw...

Embodiment 2

[0148] A method for preparing high-strength aluminum alloy wire for energy-saving wires, specifically comprising the following process steps:

[0149] (1) Heat treatment process of high-strength aluminum rod:

[0150] That is, pre-solution treatment. First, a hot-rolled aluminum rod with a diameter of 9.6mm is selected, and its composition range is: Si: 0.57%; Fe: 0.2%; Cu: 0.01%; Mg: 0.63%; the micro-Vickers hardness range of the aluminum rod is 65HV.

[0151] Secondly, randomly take radial sections at 3 places on the original aluminum rod as samples, and the Brinell hardness range: HBS: 150.

[0152] Finally, heat treatment is performed on the original aluminum rod: the temperature is 530°C, the high-strength aluminum alloy wire enters the heat treatment furnace for 5 minutes to start timing, and the holding time is 3.8 hours. The sample taken out is not allowed to stay in the air, and it must be quickly immersed in water for quenching. .

[0153] (2) High-strength alumin...

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Abstract

The invention belongs to the technical field of power equipment, particularly relates to a method for preparing a high-strength aluminum alloy wire for a novel energy-saving wire, in particular to a method and process for preparing a high-strength aluminum alloy wire for an energy-saving wire. The method or process is mainly used for producing or preparing the high-strength aluminum alloy wire for the high-strength aluminum alloy wire. The method comprises the following process steps of a high-strength aluminum rod thermal treatment process, a high-strength aluminum wire drawing process and a high-strength aluminum wire aging thermal treatment process. The high-strength aluminum alloy wire with the mechanical property and conductive property both meeting the technical index standard requirement and good comprehensive performance can be produced. The strength is 320 MPa or above, and the conductivity is larger than 54%IACS. The process is relatively simple, operation is easy, the produced aluminum alloy wire is stable in performance, and no very complex technical link exists. By means of the high-strength aluminum alloy wire produced through the process, the line loss of long-distance transmission can be reduced, the aim of energy saving and emission reducing can be achieved, and environment friendliness can be achieved.

Description

technical field [0001] The invention belongs to the technical field of electric power equipment, and in particular relates to a method for preparing high-strength aluminum alloy wire for energy-saving wires, in particular to a method and process for preparing high-strength aluminum alloy wire for energy-saving wires. The method or process is mainly used for producing or preparing high-strength High-strength aluminum alloy wire for aluminum alloy wire. Background technique [0002] Most of my country's power production units are located in areas far away from power applications, so the loss of long-distance transmission lines brings great economic losses to enterprises every year. In recent years, in order to reduce line loss, the State Grid has gradually increased the application of energy-saving aluminum alloy wires. New energy-saving aluminum alloy wires have gradually replaced traditional wires and have been widely used in long-distance transmission lines. There are thre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C21/08C22F1/043C22F1/047C22F1/05B21C1/04H01B1/02
CPCB21C1/04C22C21/02C22C21/08C22F1/043C22F1/047C22F1/05H01B1/023
Inventor 吴细毛王强赵义松段占强朱义东
Owner STATE GRID CORP OF CHINA
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