Hot-dipped galvanized alloy coating with high corrosion resistance for steel member and preparation process thereof

A high corrosion resistance, alloy coating technology, applied in hot dip plating process, metal material coating process, coating and other directions, can solve problems such as high Al content and corrosion, achieve good surface quality, low preparation cost, alloy low content effect

Active Publication Date: 2013-06-26
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the Al content in the patented alloy coating formula is too high, which severely corrodes the hot-dip galvanizing production equipm

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1

[0031] The high corrosion resistance hot-dip alloy coating of the steel component of this embodiment, the alloy ingot used in the preparation of the alloy coating is composed of the following components by weight percentage:

[0032] Al0.01%, Mg0.01%, Re0.05%, Cu0.002%, the balance is Zn.

[0033] The rare earth is La and Ce mixed rare earth, the mixing ratio of the two is 1:2

[0034] The preparation process of the alloy coating includes the pickling, water washing, assisting plating and drying treatments of the plated parts before hot dip plating. It is characterized by pickling with hydrochloric acid with a concentration of 10%, pickling for 5 minutes, and washing with water after pickling During the boosting process, the boosting temperature is 50℃ hot dip plating, and the boosting time is 40s;

[0035] After the plating aid treatment, the plated parts are dried at 120°C for 20s. After the surface of the sample is whitened, the plated parts are immediately placed...

Example Embodiment

[0037] Example 2

[0038] The high corrosion resistance hot-dip alloy coating of the steel component of this embodiment, the alloy ingot used in the preparation of the alloy coating is composed of the following components by weight percentage:

[0039] Al0.015%, Mg0.01%, Re0.1%, Cu0.003%, the balance is Zn.

[0040] The rare earth is La and Ce mixed rare earth, the mixing ratio of the two is 2:1

[0041] The preparation process of alloy coating includes pickling, water washing, assisting plating and drying treatment before hot dip plating of the plated parts. It is characterized by using 15% hydrochloric acid for pickling for 10 minutes, and then washing with water after pickling. During the boosting process, the boosting temperature is 70℃ for hot dip plating, and the boosting time is 50s;

[0042] After the plating aid treatment, the plated parts are dried at a temperature of 120°C for 40s. After the surface of the sample is whitened, the plated parts are immediately placed in the al...

Example Embodiment

[0044] Example 3

[0045] The high corrosion resistance hot-dip alloy coating of the steel component of this embodiment, the alloy ingot used in the preparation of the alloy coating is composed of the following components by weight percentage:

[0046] Al0.02%, Mg0.01%, Re0.2%, Cu0.005%, the balance is Zn.

[0047] The rare earth is La and Ce mixed rare earth, and the mixing ratio of the two is 6:1.

[0048] The preparation process of the alloy coating includes the pickling, water washing, assisting plating and drying treatments of the plated parts before the hot dip plating. It is characterized by pickling with 20% hydrochloric acid for 10 minutes, and then washing with water after pickling. During the boosting process, the boosting temperature is 70℃ for hot dip plating, and the boosting time is 60s;

[0049] After the plating aid treatment, the plated parts are dried at a temperature of 120°C for 40s. After the surface of the sample is whitened, the plated parts are immediately plac...

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PUM

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Abstract

The invention provides a hot-dipped galvanized alloy coating with high corrosion resistance for a steel member. The improvement is that, when the alloy coating is prepared, an adopted alloy ingot comprises the following components in percentage by weight: 0.01-2% of Al, 0.01-2% of Mg, 0.05-3% of Re, 0.002-1% of Cu and the balance of Zn. The alloy coating has the characteristics of high corrosion resistance, low zinc consumption, better economy and the like, which are suitable for the steel members of power transmission lines, and the alloy coating can effectively prolong the corrosion-resistant service life of the steel member of the power transmission line and prolong the corrosion-resistant service life by above 2 times in comparison with industrial hot-dipping of pure zinc while ensuring that the thickness of the coating is not increased.

Description

【Technical field】 [0001] The invention relates to a hot-dip galvanizing process for metal materials, in particular to a high-corrosion-resistant hot-dip galvanized alloy coating for steel components and a preparation process thereof. 【Background technique】 [0002] As a general basic structural part of transmission line towers, steel components, the reliability of their working performance is directly related to the safety and stability of power grid operation. The loss caused by the corrosion damage of steel is huge. According to some data, China’s annual steel corrosion loss is about 500 billion yuan, accounting for 6% of the gross national product. It can be seen that the corrosion of steel has caused extreme losses in materials and energy. Big waste. Hot-dip galvanizing can effectively improve the corrosion resistance of steel, thereby reducing the loss of steel due to corrosion by 20-30%. [0003] At present, the method of coating an alloy coating on the surface of st...

Claims

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Application Information

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IPC IPC(8): C23C2/06
Inventor 孙亮马光韩钰陈新胡俊鹏
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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