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Anti-blackening Zn-Al-Mg coating steel and preparation method thereof

A zinc-aluminum-magnesium, coated steel technology, applied in coating, hot-dip plating process, metal material coating process and other directions, can solve the problems of high production safety risk, easy combustion, difficult stability control, etc., and achieves a simple preparation method. The effect of easy operation, low production cost, easy promotion and use

Active Publication Date: 2019-07-12
SHOUGANG CORPORATION
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Problems solved by technology

However, this method requires the addition of the above-mentioned alloying elements in the hot-dip galvanized alloy plating bath, and the above-mentioned alloying elements are easy to burn and burn at high temperatures, which poses a high risk of production safety and difficulty in stable control

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  • Anti-blackening Zn-Al-Mg coating steel and preparation method thereof
  • Anti-blackening Zn-Al-Mg coating steel and preparation method thereof
  • Anti-blackening Zn-Al-Mg coating steel and preparation method thereof

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[0029] The present invention will be described in detail below in conjunction with specific embodiments and examples, and the advantages and various effects of the present invention will be presented more clearly. Those skilled in the art should understand that these specific implementations and examples are used to illustrate the present invention, not to limit the present invention.

[0030] Throughout the specification, unless otherwise specified, terms used herein should be understood as commonly used in the art. Therefore, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, this specification shall take precedence.

[0031] The invention provides an anti-blackening zinc-aluminum-magnesium coating steel, which comprises a steel substrate and a zinc-aluminum-magnesium alloy coating. The composition of the zinc-aluminum-...

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Abstract

The invention relates to anti-blackening Zn-Al-Mg coating steel and a preparation method thereof and belongs to the technical field of steel rolling. The anti-blackening Zn-Al-Mg coating steel comprises a steel substrate and a Zn-Al-Mg alloy coating, and is characterized in that the Zn-Al-Mg alloy coating is prepared from, by mass, 1-4% of Mg, 1-4% of Al, and the balance Zn and inevitable impurities, and the Zn-Al-Mg alloy coating comprises an oxide film layer and a Zn-Mg containing film layer from inside to outside. The Zn-Al-Mg coating steel provided by the invention has the technical effectthat it is extremely difficult for the steel surface to darken and blacken in a complex atmospheric environment; and the preparation method provided by the invention is simple, easy to implement, lowin preparation cost and easy to use and popularize.

Description

technical field [0001] The invention relates to an anti-blackening zinc-aluminum-magnesium coated steel and a preparation method thereof, belonging to the technical field of rolling steel. Background technique [0002] Hot-dip galvanizing is to make the molten metal react with the iron substrate to produce an alloy layer, so that the substrate and the coating are combined. Hot-dip galvanized steel has the advantages of uniform coating, strong adhesion, long service life, simple manufacturing process, and low product price. It is increasingly demanded in many different industries such as automobile industry, electrical industry and construction industry. [0003] In order to improve the corrosion resistance of hot-dip galvanized steel, zinc-alloy coated steel, including zinc-aluminum-magnesium-coated steel, is produced by adding elements such as magnesium and aluminum to pure zinc-coated steel. Zinc-aluminum-magnesium-coated steel is widely used in the manufacture of automob...

Claims

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Application Information

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IPC IPC(8): C23C2/06C22C18/00C22C18/04
CPCC22C18/00C22C18/04C23C2/06
Inventor 蒋光锐滕华湘商婷刘广会李研李翔宇王海全张浩胡燕慧李明远刘李斌
Owner SHOUGANG CORPORATION
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