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A steel core wire anti-corrosion alloy coating for overhead wires and preparation method thereof

A technology of overhead wires and anti-corrosion alloys, which is applied in the direction of metal material coating process, coating, hot-dip plating process, etc., can solve the problems of high cost, lack of large-scale promotion and application, immature technology, etc., and achieve production Low equipment requirements, long-term anti-corrosion life, and the effect of improving anti-corrosion performance

Active Publication Date: 2021-07-02
YINGKOU ELECTRIC POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the alloy coatings studied in the anti-corrosion coating of steel core wire include zinc-aluminum alloy coating, zinc-nickel alloy coating, zinc-titanium alloy coating, etc., which have achieved certain results in improving the anti-corrosion life of steel core wire. However, due to the high cost, the technology is not enough The shortcomings such as maturity have not been promoted and applied on a large scale

Method used

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  • A steel core wire anti-corrosion alloy coating for overhead wires and preparation method thereof

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Embodiment 1

[0035] This embodiment is an anti-corrosion alloy coating for steel core wires for overhead wires, wherein the composition of the alloy coating (percentage by weight): 5% aluminum, 0.2% rare earth, 0.2% silver, 0.5% manganese, 1.0% chromium, and the balance is zinc and unavoidable impurities. The rare earth is rare earth yttrium element.

[0036] Taking the weight loss of the salt spray test as the corrosion resistance assessment standard of the alloy coating, under the same coating thickness, the corrosion resistance of the alloy coating is 15.8 times higher than that of industrial hot-dip pure zinc.

[0037] The method for preparing a steel core wire anti-corrosion alloy coating for overhead conductors in this embodiment includes the following steps:

[0038] ① Add aluminum ingots, rare earths, silver, manganese, chromium, and zinc ingots to the melting furnace according to the stated ratio, and the furnace temperature rises to 650°C. After complete melting, stir mechanical...

Embodiment 2

[0051] In the steel core wire alloy coating of this embodiment, the composition (mass percentage) of the alloy coating is: 10% aluminum, 0.005% rare earth, 0.005% silver, 0.05% manganese, 0.05% chromium, and the balance is zinc and unavoidable impurities . Taking the weight loss of the salt spray test as the corrosion resistance assessment standard of the alloy coating, under the same coating thickness, the corrosion resistance of the alloy coating is 16.2 times higher than that of industrial hot-dip pure zinc.

[0052] The method for preparing a steel core wire anti-corrosion alloy coating for overhead conductors in this embodiment includes the following steps:

[0053] ① Add aluminum ingots, rare earth, silver, manganese, chromium, and zinc ingots to the melting furnace according to the stated proportions, and raise the temperature of the furnace to 700°C. After complete melting, stir mechanically to form an alloy plating solution, and place it in a ceramic galvanizing pot f...

Embodiment 3

[0066] In the steel core wire alloy coating of this embodiment, the composition (mass percentage) of the alloy coating is: 8% aluminum, 0.1% rare earth, 0.05% silver, 0.2% manganese, 0.5% chromium, and the balance is zinc and unavoidable impurities . Taking the weight loss of the salt spray test as the corrosion resistance assessment standard of the alloy coating, under the same coating thickness, the corrosion resistance of the alloy coating is 17.0 times higher than that of industrial hot-dip pure zinc.

[0067] The method for preparing a steel core wire anti-corrosion alloy coating for overhead conductors in this embodiment includes the following steps:

[0068] ① Add aluminum ingots, rare earth, silver, manganese, chromium, and zinc ingots to the melting furnace according to the stated proportions, and raise the temperature of the furnace to 650°C. After complete melting, mechanically stir to form an alloy plating solution, and place it in a ceramic galvanizing pot for 500...

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Abstract

The present invention is a steel core wire anti-corrosion alloy coating for overhead wires and a preparation method thereof, which contains 5-10% aluminum, 0.005-0.2% rare earth, 0.005-0.2% silver, 0.05-0.5% manganese, 0.05‑1.0% chromium, balance zinc and unavoidable impurities. The alloy coating prepared by adopting the proportioning of the present invention has better corrosion resistance: taking the yellow rust occurrence time as the failure standard of the alloy coating, under the same condition of coating thickness, the corrosion resistance of the alloy coating of the present invention is better than that of hot-plated coating. The pure zinc coating is improved by more than 15 times; with the salt spray test weight loss as the corrosion resistance assessment standard of the alloy coating, under the same condition of the coating thickness, the corrosion resistance of the alloy coating of the present invention is more than 15 times higher than that of the industrial hot-dip pure zinc coating.

Description

technical field [0001] The invention relates to an overhead wire, in particular to a steel core wire anti-corrosion alloy coating for an overhead wire and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy and the acceleration of industrialization, environmental and climate problems such as acid rain and smog have become increasingly prominent. In my country's coastal and heavily polluted industrial areas and other highly atmospheric and corrosive environments, the high concentration of salt, acid gas, and dust in the air can easily cause corrosion to the steel core wire and aluminum wire of the overhead conductor, reducing the overall tensile strength of the conductor At the same time, the effective transmission cross-section of the wire is reduced to a certain extent. In severe cases, even the steel core and aluminum wire are broken and broken, which affects the service life of the line. According to the relevant ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C18/04C23C2/02C23C2/06C23C2/26C23C2/38
CPCC22C18/04C23C2/02C23C2/06C23C2/26C23C2/38
Inventor 孙超祝志祥郑薇段有重马洪峰丛培元张士军张宏志李锡忠朱元成徐中凯金卓琛郭峰刘洋齐亮王红梅陈保安张强陈新韩钰杨长龙
Owner YINGKOU ELECTRIC POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY
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