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Aluminum alloy guide wire suitable for overhead power transmission line and manufacturing method for aluminum alloy guide wire

A technology for overhead transmission lines and aluminum alloy wires is applied in the field of aluminum alloy wires, and can solve the problems of large resistance loss, low conductivity of aluminum alloy wires, and the need to improve corrosion resistance.

Inactive Publication Date: 2018-01-09
国网河南省电力公司西峡县供电公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the aluminum alloy wire has low electrical conductivity, large resistance loss, and corrosion resistance needs to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] An aluminum alloy wire suitable for overhead transmission lines is made of the following components in mass percentage:

[0059] Mg: 2.5%;

[0060] Si: 3.8%;

[0061] Mn: 0.25%;

[0062] Cr: 0.14%;

[0063] Zr: 0.21%;

[0064] Ti: 0.36%;

[0065] Yb: 0.23%;

[0066] The balance is Al and impurities with a content of ≤0.05%.

[0067] The impurities are unavoidable impurities well known to those skilled in the art, and generally include Fe, V, Ni and other impurity elements.

[0068] The preparation method of the aluminum alloy comprises the following steps:

[0069] Step S1: Carry out alloy melting according to the above composition ratio, the alloy melting temperature is 730° C., and keep warm for 10 minutes to obtain alloy melt 1;

[0070] Step S2: Adding a refining agent to the obtained alloy melt 1 for refining, the refining temperature is 735° C. for 12 minutes to obtain alloy melt 2;

[0071] Step S3: cooling and extruding the molten alloy 2 to obtain an ing...

Embodiment 2

[0080] An aluminum alloy wire suitable for overhead transmission lines is made of the following components in mass percentage:

[0081] Mg: 2.8%;

[0082] Si: 4.2%;

[0083] Mn: 0.28%;

[0084] Cr: 0.16%;

[0085] Zr: 0.23%;

[0086] Ti: 0.38%;

[0087] Yb: 0.25%;

[0088] The balance is Al and impurities with a content of ≤0.05%.

[0089] The preparation method of the aluminum alloy comprises the following steps:

[0090] Step S1: Carry out alloy smelting according to the above composition ratio, the alloy smelting temperature is 735°C, and keep warm for 10 minutes to obtain alloy melt 1;

[0091] Step S2: Adding a refining agent to the obtained alloy melt 1 for refining, the refining temperature is 735° C. for 12 minutes to obtain alloy melt 2;

[0092] Step S3: cooling and extruding the molten alloy 2 to obtain an ingot;

[0093] Step S4: raising the temperature of the ingot to 450°C at a rate of 0.72°C / min, keeping it at 450°C for 10 hours, and performing homogeni...

Embodiment 3

[0100] An aluminum alloy wire suitable for overhead transmission lines is made of the following components in mass percentage:

[0101] Mg: 2.2%;

[0102] Si: 3.6%;

[0103] Mn: 0.23%;

[0104] Cr: 0.12%;

[0105] Zr: 0.20%;

[0106] Ti: 0.36%;

[0107] Yb: 0.18%;

[0108] The balance is Al and impurities with a content of ≤0.05%.

[0109] The preparation method of the aluminum alloy comprises the following steps:

[0110] Step S1: Carry out alloy melting according to the above-mentioned composition ratio, the alloy melting temperature is 725°C, and keep warm for 12 minutes to obtain alloy melt 1;

[0111] Step S2: Adding a refining agent to the obtained alloy melt 1 for refining, the refining temperature is 732° C. for 15 minutes to obtain alloy melt 2;

[0112] Step S3: cooling and extruding the molten alloy 2 to obtain an ingot;

[0113] Step S4: raising the temperature of the ingot to 450°C at a rate of 0.72°C / min, keeping it at 450°C for 10 hours, and performing ...

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Abstract

The invention relates to an aluminum alloy wire suitable for overhead transmission lines, belonging to the technical field of aluminum alloy wires, which is made of the following components in mass percentage: Mg2.0~3.2%; Si3.5~4.5%; Mn0.2 ~0.3%; Cr: 0.1~0.2%; Zr0.18~0.25%; Ti0.35~0.40%; Yb0.15~0.3%; the balance is Al and impurities with content ≤0.05%. The invention provides an aluminum alloy wire, which can improve the strength and corrosion resistance of the aluminum alloy wire while enhancing the conductivity of the aluminum alloy wire, so as to meet the needs of harsh environments.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy wires, and in particular relates to an aluminum alloy wire suitable for overhead power transmission lines and a preparation method thereof. Background technique [0002] At present, the most widely used overhead transmission line is still the aluminum steel core stranded wire (ACSR), which has a large amount of conductors and a wide range, and its production and application are relatively mature. However, with the advancement of technology and the needs of the development of the power industry, various aluminum alloy conductors have been widely used on transmission lines in many countries in the world, mainly including all aluminum alloy stranded wire (AAAC), aluminum alloy cored aluminum stranded wire (ACAR), Steel core aluminum alloy stranded wire (AACSR) and other types. [0003] After years of development and application of high-strength aluminum alloy wire, the standards of various co...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C1/02B21C37/04H01B1/02
Inventor 杨红伟封少兵白清文李尧刘建军张益铭
Owner 国网河南省电力公司西峡县供电公司
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