High-toughness corrosion-resistant light alloy aluminum material for ultra-high-voltage line, and preparation process thereof

Abstract

The invention discloses a high-toughness corrosion-resistant light alloy aluminum material for an extra-high voltage line, and a preparation process thereof. The high-toughness corrosion-resistant light alloy aluminum material comprises an aluminum ingot, crystalline silicon, a copper ingot, an aluminum-strontium intermediate alloy, an aluminum-magnesium intermediate alloy, an aluminum-manganese intermediate alloy and an aluminum-titanium-boron intermediate alloy, concretely comprises, by weight, 30-40 parts of the aluminum ingot, 32-38 parts of the crystalline silicon, 5-9 parts of the copper ingot, 4-8 parts of the aluminum-strontium intermediate alloy, 13-25 parts of the aluminum-magnesium intermediate alloy, 7-12 parts of the aluminum-manganese intermediate alloy and 5-10 parts of the aluminum-titanium-boron intermediate alloy. Through refining treatment, the tensile strength and toughness of the alloy aluminum material are improved, the risk of line breakage is reduced, the working reliability of a line is improved, the hardness of the alloy aluminum material is improved, the corrosion resistance of the alloy aluminum material is enhanced, damage to the line in the high-cold and high-altitude severe environment is reduced, the service life of the extra-high-voltage line is prolonged, zinc plating treatment is not needed, no toxic wastewater is generated, and safety and environment friendliness are achieved.

Description

technical field [0001] The invention relates to the technical field of light alloy aluminum materials, in particular to a high-strength, toughness, corrosion-resistant light alloy aluminum material for UHV lines and a preparation process thereof. Background technique [0002] UHV lines refer to electric energy transmission lines with a voltage level of plus or minus 800 kV and above direct current and 1000 kV and above alternating current. With the rapid development of science and technology, the use of high-strength heat-resistant aluminum alloy stranded wire instead of steel-cored aluminum alloy stranded wire on UHV lines has attracted widespread attention in the world. High-strength heat-resistant all-aluminum alloy is an aluminum alloy conductor material with high tensile strength and good heat resistance. After being made into a wire, it has high service temperature, good heat resistance, excellent electrical conductivity, large carrying capacity, and It has outstandin...

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Problems solved by technology

[0003] However, most of the traditional alloy aluminum materials have low tensile strength and poor toughness, and the problem of line breakage is prone to occur during use, which inevitably affects the reliability of UHV lines. A large amount of toxic and harmful wastewater is likely to be produced during the process, causing serious pollution to the environment. At the same time, the corrosion resistance is insufficient, and the damage is serious in the harsh environment of high cold and high altitude, which shortens the service life of UHV lines

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