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A hot-dip galvanized alloy coating and its preparation process for overhead ground wires of transmission lines

A technology of alloy coating and overhead ground wire, which is applied in hot dip plating process, metal material coating process, coating and other directions, can solve the problems of high cost, incomplete technology, and failure to be widely promoted and applied. , to achieve the effect of low cost, strong corrosion resistance and long-term anti-corrosion life

Inactive Publication Date: 2017-01-04
STATE GRID CORP OF CHINA +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing alloy coatings include zinc-aluminum alloy coatings, zinc-nickel alloy coatings, zinc-titanium alloy coatings, etc. Although this measure has achieved certain results in improving the anti-corrosion life of the coatings, due to the high cost and incomplete technology, there is no Can be promoted and applied on a large scale

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The transmission line tower alloy coating of the present embodiment, wherein the alloy coating is prepared from the following alloys by weight percentage:

[0043] Aluminum 5%, nickel 0.03%, lanthanum and cerium mixed rare earth 0.15%, the balance is zinc. 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 according to this weight percentage is 2.6 times higher than that of industrial hot-dip pure zinc.

[0044] The preparation technology of the transmission line tower alloy coating of this example comprises the following steps:

[0045] 1) Pickling and water washing plating:

[0046] Use hydrochloric acid with a concentration of 10% to pickle the plated parts before hot-dip plating, pickling time is 20 minutes, and wash with water after pickling:

[0047] 2) Assisted plating treatment

[0048] Place the steel wire obtained ...

Embodiment 2

[0055] The transmission line tower alloy coating of the present embodiment, wherein the alloy coating is prepared from the following alloys by weight percentage:

[0056] Aluminum 6%, nickel 0.02%, lanthanum and cerium mixed rare earth 0.1%, the balance is zinc. Taking the weight loss of the salt spray test as the corrosion resistance assessment standard of the alloy coating, under the condition of the same coating thickness, the corrosion resistance of the alloy coating according to this weight percentage is 2.8 times higher than that of industrial hot-dip pure zinc.

[0057] The preparation technology of the transmission line tower alloy coating of this example comprises the following steps:

[0058] 1) Pickling and water washing plating:

[0059] Use hydrochloric acid with a concentration of 15% to pickle the plated parts before hot-dip plating, pickling time is 25 minutes, and wash with water after pickling:

[0060] 2) Assisted plating treatment

[0061] Place the plated...

Embodiment 3

[0068] The transmission line tower alloy coating of the present embodiment, wherein the alloy coating is prepared from the following alloys by weight percentage:

[0069] Aluminum 3%, nickel 0.05%, lanthanum and cerium mixed rare earth 0.2%, and the balance is zinc. Taking the weight loss of the salt spray test as the corrosion resistance assessment standard of the alloy coating, under the condition of the same coating thickness, the corrosion resistance of the alloy coating according to this weight percentage is 2.3 times higher than that of industrial hot-dip pure zinc.

[0070] The preparation technology of the transmission line tower alloy coating of this example comprises the following steps:

[0071] 1) Pickling and water washing plating:

[0072] Use hydrochloric acid with a concentration of 15% to pickle the plated parts before hot-dip plating, the pickling time is 30 minutes, and wash with water after pickling:

[0073] 2) Assisted plating treatment

[0074] The pl...

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PUM

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Abstract

The invention relates to a hot-dip galvanized alloy plating for an electric transmission line overhead ground wire and a preparing process thereof. The plating and the process are characterized in that: the alloy plating is prepared from components by weight comprising 3-8% of aluminum, 0.01-3% of nickel and 0.02-3% of rare earth, with the balance being zinc; the plating prepared by acid water washing, aiding electroplating, hot-dip galvanizing and cooling can effectively prolong the anticorrosion lifetime of the hot-dip plating of the electric transmission line overhead ground wire; and the anticorrosion lifetime is prolonged by more than 2 times than industrial hot-dip galvanized platings at the same time of not increasing the thickness of the plating.

Description

[0001] 【Technical field】 [0002] The invention relates to a hot-dip coating technology, in particular to a hot-dip galvanized alloy coating and a preparation process for overhead ground wires of transmission lines. [0003] 【Background technique】 [0004] The loss caused by the corrosion damage of steel is huge. According to some data, taking my country as an example, the annual loss of steel corrosion is about 500 billion yuan, accounting for 6% of the gross national product. It can be seen that the material damage caused by the corrosion of steel And the waste of energy is great. The overhead ground wires of transmission lines are exposed to the atmospheric environment for a long time, and are easily corroded by acidic and strong corrosive gases such as industrial waste gases such as sulfides and nitrogen oxides. In addition, power outages are required to replace the overhead ground wires of transmission lines, and the seriousness of economic losses It goes without saying. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/06C23C2/38C22C18/04
Inventor 孙亮陈新韩钰马光陈川陈云胡俊鹏
Owner STATE GRID CORP OF CHINA
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