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Zinc-based multi-element alloy for hot dipping and preparation method thereof

A multi-element alloy, hot-dip plating technology, applied in hot-dip plating process, metal material coating process, coating and other directions, can solve problems such as difficulty in dipping, and achieve excellent dipping performance, smooth surface, and excellent corrosion resistance. Effect

Inactive Publication Date: 2010-09-01
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the galvanized layer, the alloy coating has better corrosion resistance, better formability and adhesion, but it also has the problem of difficulty in dipping

Method used

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  • Zinc-based multi-element alloy for hot dipping and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Prepare a zinc-based multi-element alloy with the following components: Al 2%, RE (La, Ce, Pr mixed rare earth) 0.1%, Ni 0.03%, Si 0.02%, Mg 0.01%, Cu 0.01%, and the balance is Zn. The raw materials used are commercially available pure zinc, pure aluminum, Zn-8% Ni alloy, Al-10% RE alloy (La, Ce, Pr mixed rare earth), Al-10% Si alloy, Al-5% Mg alloy, Al - 5% Cu alloy.

[0027] 2) Prepare 100Kg zinc-based multi-element alloy through the following process flow, for subsequent use:

[0028] A. Weigh 0.4Kg of Zn-8%Ni alloy according to the amount of nickel, heat it to 800°C in a melting furnace to melt it, stir it evenly, and keep it warm for more than 1 hour;

[0029] B, calculate according to the mass ratio of various elements in the zinc-based multi-component alloy of the present invention, weigh Al-10% RE alloy 1Kg, Al-10% Si alloy 0.2Kg, Al-5%Mg alloy 0.2Kg, Al - 0.2Kg of 5% Cu alloy and 0.54Kg of pure aluminum, then mix these raw materials, heat them to 650°C in ...

Embodiment 2

[0036] 1) Prepare a zinc-based multi-element alloy with the following components: Al 2.5%, RE (La, Ce, Pr mixed rare earth) 0.15%, Ni 0.025%, Si 0.015%, Mg 0.015%, Cu 0.0075%, and the balance is Zn. The raw materials used are commercially available pure zinc, pure aluminum, Zn-8% Ni alloy, Al-10% RE alloy (La, Ce, Pr mixed rare earth), Al-10% Si alloy, Al-5% Mg alloy, Al - 5% Cu alloy.

[0037] 2) be prepared into 100Kg zinc-based multi-element alloy with the method identical with embodiment 1, the consumption of various raw materials is pure zinc 97.0125Kg, pure aluminum 0.5875Kg, Zn-8%Ni alloy 0.3Kg, Al-10%RE alloy ( La, Ce, Pr mixed rare earth) 1.5Kg, Al-10%Si alloy 0.15Kg, Al-5%Mg alloy 0.3Kg, Al-5%Cu alloy 0.15Kg.

[0038] 3) Dip zinc-based multi-element alloy and passivation treatment to the iron and steel workpiece with the same method as in Example 1.

[0039] 4) The appearance of the steel plate after galvanized multi-element alloy and passivation treatment is uniform...

Embodiment 3

[0041] 1) Prepare a zinc-based multi-element alloy with the following components: Al 3%, RE (La, Ce, Pr mixed rare earth) 0.2%, Ni 0.02%, Si 0.01%, Mg 0.02%, Cu 0.005%, and the balance is Zn. The raw materials used are commercially available pure zinc, pure aluminum, Zn-8%Ni alloy, Al-10%RE alloy (La, Ce, Pr mixed rare earth), Al-10%Si alloy, Al-5%Mg alloy, Al-5% Cu alloy.

[0042] 2) be prepared into 100Kg zinc-based multi-element alloy with the method identical with embodiment 1, the consumption of various raw materials is pure zinc 96.515Kg, pure aluminum 0.635Kg, Zn-8%Ni alloy 0.25Kg, Al-10%RE alloy ( La, Ce, Pr mixed rare earth) 2.0Kg, Al-10%Si alloy 0.1Kg, Al-5%Mg alloy 0.4Kg, Al-5%Cu alloy 0.1Kg.

[0043] 3) Dip zinc-based multi-element alloy and passivation treatment to the iron and steel workpiece with the same method as in Example 1.

[0044] 4) The appearance of the steel plate after galvanized multi-element alloy and passivation treatment is uniform, bright and s...

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Abstract

The invention provides a zinc-based multi-element alloy for hot dipping and a preparation method thereof. The zinc-based multi-element alloy comprises the following components in percentage by mass: 2 to 3 percent of Al, 0.1 to 0.2 percent of RE(LA, Ce and PR mixed rare earth), 0.02 to 0.03 percent of Ni, 0.01 to 0.02 percent of Si, 0.01 to 0.02 percent of Mg, 0.005 to 0.01 percent of Cu and the balance of Zn. The zinc-based multi-element alloy has the advantages that: (1) in the alloy, the Al, Ni, Si, Cu and other elements are reasonably mixed, so the corrosion resistance of a hot-dip coating is obviously improved by over 20 percent than that of a pure zinc coating, meanwhile, the aluminium content is controlled within 3 percent so as to ensure that the alloy has good dip plating performance; and (2) in the alloy, La, Ce, Pr and other rare-earth elements and Mg element are reasonably mixed, so the fluidity and wetting performance of alloy plating solution are further improved, the surface quality of the coating is good, and the metal consumption is reduced by over 20 percent than that of the traditional galvanization. The zinc-based multi-element alloy and the preparation method thereof have obvious advantages in the aspects such as improving performance quality of hot-dip galvanized products, reducing metal consumption and reducing production cost.

Description

technical field [0001] The invention relates to the technical field of material surface treatment, in particular to a zinc-based multi-element alloy for hot-dip plating and a preparation method thereof. Background technique [0002] The loss caused by corrosion to steel is extremely serious. According to incomplete statistics, 1 / 3 of the world's annual steel production is lost due to corrosion, and the direct economic loss caused by steel corrosion in China alone reaches hundreds of billions of yuan each year. Corrosion not only brings huge economic losses, but also causes heavy casualties. Therefore, it is necessary to study the corrosion protection measures of steel, and hot-dip galvanizing is recognized as one of the most direct and effective methods for steel protection. [0003] Hot-dip galvanizing is a process of immersing the treated steel in a molten zinc bath at a certain temperature for a certain period of time, taking it out and cooling it, and obtaining a beauti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06C22C18/04C22C1/02
Inventor 范云鹰蒋业华周荣李祖来金青林岑启宏
Owner KUNMING UNIV OF SCI & TECH
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