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Zinc-magnesium-aluminum coated steel plate with excellent blackening resistance and adhesive performance and preparation method of zinc-magnesium-aluminum coated steel plate

A coated steel plate, zinc-magnesium-aluminum technology, applied in the direction of coating, hot-dip plating process, metal material coating process, etc., can solve the problems of difficulty, complicated operation, high cost, etc., and achieve excellent adhesive performance and excellent resistance to blackening performance effect

Active Publication Date: 2021-12-24
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is complicated to operate, the cost is high, and it is difficult to realize industrialization.

Method used

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  • Zinc-magnesium-aluminum coated steel plate with excellent blackening resistance and adhesive performance and preparation method of zinc-magnesium-aluminum coated steel plate
  • Zinc-magnesium-aluminum coated steel plate with excellent blackening resistance and adhesive performance and preparation method of zinc-magnesium-aluminum coated steel plate
  • Zinc-magnesium-aluminum coated steel plate with excellent blackening resistance and adhesive performance and preparation method of zinc-magnesium-aluminum coated steel plate

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Embodiment 1- Embodiment 7

[0038] A zinc-magnesium-aluminum coated steel plate with excellent blackening resistance and adhesive properties, the steel plate includes a galvanized layer, a chemical conversion layer and an antirust oil layer in sequence.

[0039] The preparation method of the zinc-magnesium-aluminum coated steel plate with excellent blackening resistance and adhesive properties comprises the following process flow:

[0040] 1) Zinc-magnesium-aluminum coated steel sheet is obtained by cold rolling→cleaning→annealing→hot-dip galvanizing→levelling. The coatings of zinc-magnesium-aluminum coated sheets in the following examples and comparative examples contain Zn: 96.14%, Al: 2.03%, Mg: 1.80%, and the rest are unavoidable impurities.

[0041] 2) Use a roller coating method to uniformly coat the aqueous solution (organic carboxylic acid solution) containing one or more of malonic acid, succinic acid, adipic acid, tartaric acid, citric acid, malic acid, and oxalic acid on the zinc-aluminum-magn...

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Abstract

The invention provides a zinc-magnesium-aluminum coated steel plate with excellent blackening resistance and adhesive performance and a preparation method of the zinc-magnesium-aluminum coated steel plate. A zinc coating comprises the following components in percentage by mass: 0.1-6.0% of Al, 0.1-4.0% of Mg and the balance of Zn and inevitable impurities. A chemical conversion layer comprises zinc salt of organic carboxylic acid with 6 or less carbon atoms; and compared with the prior art, the zinc-magnesium-aluminum coated steel plate provided by the invention has excellent blackening resistance and adhesive performance.

Description

technical field [0001] The invention belongs to the field of zinc-magnesium-aluminum-coated steel sheets, and in particular relates to a zinc-magnesium-aluminum-coated steel sheet with excellent blackening resistance and adhesive performance and a preparation method thereof. Background technique [0002] Hot-dip Zn-Al-Mg alloy coated sheet is expected to replace pure zinc coated sheet in the field of automobile and home appliance manufacturing due to its good corrosion resistance and low friction coefficient. [0003] However, a prominent problem of hot-dip Zn-Al-Mg alloy clad sheet is that it is prone to blackening. At present, there have been several existing technologies aimed at solving the problem of blackening of the hot-dip Zn-Al-Mg alloy plate. [0004] The patent with application number 201911008703.8 published on January 31, 2020 discloses a blackening-resistant zinc-aluminum-magnesium coated steel sheet and a preparation method thereof. The blackening-resistant z...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06C22C18/00C22C18/04C23C2/26C23C22/53C23C2/40B05D7/14
CPCC23C2/06C22C18/00C22C18/04C23C2/26C23C22/53C23C2/40B05D7/14
Inventor 李子涛代朋虎王辉崔磊计遥遥刘永刚张军詹华
Owner MAANSHAN IRON & STEEL CO LTD
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