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High-corrosion-resistance overhead ground wire alloy plating layer and preparing process thereof

A technology of alloy coating and overhead ground wire, which is applied in metal material coating process, hot-dip plating process, coating, etc., can solve the problems of lack of large-scale promotion and application, immature technology, high cost, etc., and achieve cost Low cost, simple preparation process, excellent corrosion resistance

Inactive Publication Date: 2016-05-11
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the alloy coatings studied include zinc-aluminum alloy coatings, zinc-nickel alloy coatings, zinc-titanium alloy coatings, etc., which have achieved certain results in improving the anti-corrosion life of the coatings, but due to the shortcomings of high cost and immature technology, they have not been large-scale. promotion and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A highly corrosion-resistant overhead ground wire alloy coating is prepared from the following components by weight percentage: 3% aluminum, 0.06% nickel, 0.05% rare earth, and the balance is zinc, wherein the rare earth is lanthanum and cerium at a ratio of 1:1 .

[0033] The preparation process of the alloy coating comprises the following steps:

[0034] 1) Cleaning the steel wire: use 10% hydrochloric acid to clean the steel wire for 20 minutes, and then wash it with water;

[0035] 2) Flux plating treatment: place the steel wire treated in step 1) in a flux flux, and conduct flux flux at 60°C for 30s, wherein the flux concentrations are 0.3g / ml, 0.01g / ml and 0.025g / ml respectively ZnCl 2 , a mixed aqueous solution of NaCl and NaF;

[0036] 3) Preparation of alloy plating solution: melting the above-mentioned aluminum, nickel, rare earth and zinc at 470° C. to obtain an alloy plating solution;

[0037] 4) Hot-dip plating: Dry the steel wire treated in step 2) at ...

Embodiment 2

[0041] A highly corrosion-resistant overhead ground wire alloy coating is prepared from the following components by weight percentage: 5% aluminum, 0.08% nickel, 0.1% rare earth, and the balance is zinc, wherein the rare earth is lanthanum and cerium at a ratio of 1:1 .

[0042] The preparation process of the alloy coating comprises the following steps:

[0043] 1) Cleaning the steel wire: use 15% hydrochloric acid to clean the steel wire for 15 minutes, and then wash it with water;

[0044] 2) Flux plating treatment: place the steel wire treated in step 1) in the flux flux, and conduct flux flux at 80°C for 20s, wherein the flux concentrations are 0.3g / ml, 0.01g / ml and 0.025g / ml respectively ZnCl 2 , a mixed aqueous solution of NaCl and NaF;

[0045] 3) Preparation of alloy plating solution: melting the above-mentioned aluminum, nickel, rare earth and zinc at 475° C. to obtain an alloy plating solution;

[0046] 4) Hot-dip plating: Dry the steel wire treated in step 2) at...

Embodiment 3

[0050] A highly corrosion-resistant overhead ground wire alloy coating is prepared from the following components by weight percentage: 6% aluminum, 0.1% nickel, 0.15% rare earth, and the balance is zinc, wherein the rare earth is lanthanum and cerium at a ratio of 1:1 .

[0051] The preparation process of the alloy coating comprises the following steps:

[0052] 1) Cleaning the steel wire: use 20% hydrochloric acid to clean the steel wire for 10 minutes, and then wash it with water;

[0053] 2) Flux plating treatment: place the steel wire obtained in step 1) in a flux flux, and conduct flux flux at 90° C. for 10 seconds, wherein the flux fluxes are 0.3 g / ml, 0.01 g / ml and 0.025 g / ml respectively. ZnCl 2 , a mixed aqueous solution of NaCl and NaF;

[0054] 3) Preparation of alloy plating solution: melting the above-mentioned aluminum, nickel, rare earth and zinc at 465° C. to obtain an alloy plating solution;

[0055]4) Hot-dip plating: Dry the steel wire treated in step 2)...

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Abstract

The invention provides a high-corrosion-resistance overhead ground wire alloy plating layer and a preparing process thereof. The alloy plating layer is prepared from, by mass percent, 3%-8% of aluminum, 0.06%-0.1% of nickel, 0.05%-0.3% of rare earth and the balance zinc. The preparing process of the alloy plating layer includes the following steps of (1) plating piece washing; (2) plating assisting; (3) preparation of an alloy plating solution; and (4) hot dipping. The alloy plating layer has the excellent corrosion resistance, wherein if the yellow rust occurrence time serves as an alloy plating layer failure criteria, under the condition that the thicknesses of plating layers are the same, the corrosion resistance of the alloy plating layer is improved by more than one time the corrosion resistance of a hot-dip zinc coating; and if salt spray test weightlessness serves as an alloy plating layer corrosion resistance assessment criterion, under the condition that the thicknesses of plating layers are the same, the corrosion resistance of the alloy plating layer is improved by more than one time the corrosion resistance of an industrial hot dip zinc coating; and the preparing process of the alloy plating layer is simple and low in cost, and the industrial production requirement can be achieved through existing hot galvanizing equipment.

Description

technical field [0001] The invention relates to a hot-dip plating technology for overhead ground wires for power transmission and transformation in the electric power industry, in particular to a highly corrosion-resistant overhead ground wire alloy coating and a preparation process thereof. Background technique [0002] Overhead ground wires are exposed to the atmosphere for a long time. Strong corrosive gases such as sulfides and nitrogen oxides in the air cause the overhead ground wires of transmission lines to corrode rapidly. . The anti-corrosion technology of overhead ground wire is mainly hot-dip galvanizing, which improves the corrosion resistance of hot-dip galvanizing of overhead ground wire, which can effectively prolong the service life of transmission lines, reduce steel loss, and reduce maintenance and operation and maintenance costs. [0003] With the development of hot-dip galvanizing anti-corrosion technology, the traditional hot-dip galvanizing method can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C18/04C23C2/06
CPCC22C18/04C23C2/06
Inventor 孙亮朱全军韩钰陈新潘学东徐利民陈云陈川
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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