Anti-corrosive alloy coating for power transmission tower and fastener and preparation process of anti-corrosive alloy coating

An anti-corrosion alloy and alloy coating technology, applied in metal material coating process, hot-dip coating process, coating, etc., can solve the problems of rare earth alloy coating that have not been reported, and achieve short dipping time, stable alloy structure, and coating The effect of uniform thickness

Active Publication Date: 2014-06-04
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Based on the above research and application background, the present invention will devote itself to inventing a new type of rare earth element alloy coating for power transmission towers and fasteners, so as to improve the anti-corrosion life of power transmission towers and fasteners, and prolong the operation and maintenance cycle. The rare earth alloy The coating has not been reported in domestic and foreign literature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The high-corrosion-resistant hot-dip alloy coating of the fastener of the present embodiment, the alloy zinc ingot adopted during the preparation of the alloy coating consists of the following components by weight percentage:

[0050] Al: 0.01%, Mg: 0.01%, Er: 0.06%, Yb: 0.06%, Cu: 0.02%, Cr: 0.05%, Nb: 0.005%, Ni: 0.005%, B: 0.002%, and the balance is Zn and other unavoidable impurities.

[0051] The preparation process of the alloy coating of the transmission line fastener of the present embodiment comprises the following steps:

[0052] 1) The pickling plated parts are pickled with hydrochloric acid with a concentration of 8% before hot dip plating, and the pickling time is 35 minutes, and then washed with water after pickling;

[0053] 2) Assisted plating treatment Place the plated piece obtained in step 1) in the plating flux, and perform the fluxing at a temperature of 50° C., and the fluxing time is 50 s;

[0054] 3) After the plating aid treatment, bake at 100...

Embodiment 2

[0059] The high-corrosion-resistant hot-dip alloy coating of the fastener of the present embodiment, the alloy zinc ingot adopted during the preparation of the alloy coating consists of the following components by weight percentage:

[0060] Al: 0.03%, Mg: 0.03%, Er: 0.03%, Yb: 0.06%, Cu: 0.05%, Cr: 0.1%, Nb: 0.008%, Ni: 0.008%, B: 0.005%, and the balance is Zn and other unavoidable impurities.

[0061] The preparation process of the alloy coating of the transmission line fastener of the present embodiment comprises the following steps:

[0062] 1) The pickling plated parts are pickled with hydrochloric acid with a concentration of 9% before hot-dip plating, and the pickling time is 38 minutes, and then washed with water after pickling;

[0063] 2) Assisted plating treatment Place the plated piece obtained in step 1) in the plating flux, and perform fluxing at a temperature of 60° C., and the fluxing time is 55 s;

[0064] 3) After the plating aid treatment, bake at 110°C fo...

Embodiment 3

[0069] The high-corrosion-resistant hot-dip alloy coating of the fastener of the present embodiment, the alloy zinc ingot adopted during the preparation of the alloy coating consists of the following components by weight percentage:

[0070] Al: 0.05%, Mg: 0.05%, Er: 0.06%, Yb: 0.09%, Cu: 0.2%, Cr: 0.1%, Nb: 0.009%, Ni: 0.006%, B: 0.01%, and the balance is Zn and other unavoidable impurities.

[0071] The preparation process of the alloy coating of the transmission line fastener of the present embodiment comprises the following steps:

[0072] 1) The pickling plated parts are pickled with hydrochloric acid with a concentration of 10% before hot dip plating, and the pickling time is 40 minutes, and then washed with water after pickling;

[0073] 2) Assisted plating treatment: Place the plated piece obtained in step 1) in a fluxed solution, and perform fluxed plating at a temperature of 80° C., and the fluxed plating time is 60 s;

[0074] 3) After plating aid treatment, bake ...

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Abstract

The invention relates to an anti-corrosive alloy coating for a power transmission tower and a fastener and a preparation process of the anti-corrosive alloy coating. The anti-corrosive alloy coating is prepared by pickling, aided plating, drying, hot dipping, air cooling and other technological processes. The coating comprises the following components: 0.01 to 2.5% of Al, 0.01 to 0.5% of Mg, 0.06 to 2% of Re, 0.02 to 1.5% of Cu, 0.05 to 0.3% of Cr, 0.005 to 0.01% of Nb, 0.005 to 0.01% of Ni, 0.002 to 0.06% of B, and the balance of Zn. The alloy coating is used for prolonging the anticorrosive lifetimes of steel for the power transmission tower and the fastener under a complex salt-spray environment, and prolonging the anticorrosive lifetimes more than 10 times that of an industrial hot galvanizing pure-zinc product on the premise that the thickness of the coating is not increased.

Description

【Technical field】 [0001] The invention relates to an anti-corrosion technology for steel materials and fasteners of transmission iron towers in the electric power industry, in particular to an anti-corrosion coating applied to parts used in electric transmission towers in the electric power industry. 【Background technique】 [0002] The operation and maintenance costs of transmission poles and towers caused by steel corrosion are astonishing. The atmospheric environment (coastal salt spray and chemical acid rain areas) leads to serious corrosion of conventional hot-dip galvanized materials. In some areas, the towers must be replaced even after 5 to 10 years. It can be seen that the corrosion of the iron tower has caused a great waste of transmission tower materials and energy, which seriously affects the safety and reliability of the power grid operation. [0003] As a common basic component, fasteners play an important role in the reliability of the main machine performance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06C22C18/00C22C18/02C22C18/04
Inventor 杨富尧马光陈新韩钰聂京凯祝志祥
Owner STATE GRID CORP OF CHINA
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