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Rare-earth multi-element alloy coating and hot-dip galvanizing method thereof

A multi-alloy and hot-dip galvanizing technology, applied to rare earth multi-alloy coating and its hot-dip galvanizing field, can solve problems such as poor synchronization, achieve easy operation and control, grain refinement, and reduce wetting corner effect

Inactive Publication Date: 2016-07-06
江苏中远稀土新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the rapid development of military industry, photovoltaic power generation support, ship, rail transit, construction, electric power and other industries, the demand for hot-dip galvanized products continues to increase, and the quality and corrosion resistance of hot-dip galvanized products are also affected by the diversity of the environment. Higher requirements are put forward, and the synchronization of traditional single alloy coatings such as Zn-Ni, Al-RE, Zn-Al hot-dip galvanized products to the existing environment is not good.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Based on the total mass of the rare earth multi-element alloy for hot-dip galvanizing, the rare-earth multi-element alloy for hot-dip galvanizing contains 0.9ωt% of RE, 2.5ωt% of Al, 0.5ωt% of Ni, and 1.2ωt% of Mg , the balance is Zn and unavoidable impurities. Put it into the zinc solution at a ratio of 1.5%.

[0034] Using the rare earth multi-element alloy in this example to hot-dip galvanize the large ship pipe fittings with flanges at both ends for 3 minutes, the formed rare earth multi-element alloy coating is uniform, and the thickness of the coating is 90-125 μm. The adhesion test is good, the coating is smooth, and the Very little bottoms.

Embodiment 2

[0036] Based on the total mass of the rare earth multi-element alloy for hot-dip galvanizing, the rare-earth multi-element alloy for hot-dip galvanizing contains 1ωt% of RE, 3ωt% of Al, 0.8ωt% of Ni, and 1.3ωt% of Mg. The amount is Zn and unavoidable impurities. Put it into the zinc solution at a ratio of 1%.

[0037] Using the rare earth multi-element alloy in this example to hot-dip galvanize the solar C-shaped steel product for 3 minutes, the formed rare-earth multi-element alloy coating is uniform, and the thickness of the coating is 65-80 μm, the adhesion test is good, the coating is smooth, and there is very little bottom dross .

[0038] Embodiment 3.

[0039] Based on the total mass of the rare earth multi-element alloy for hot-dip galvanizing, the rare-earth multi-element alloy for hot-dip galvanizing contains 1.1ωt% of RE, 3.5ωt% of Al, 1ωt% of Ni, and 1.5ωt% of Mg, The balance is Zn and unavoidable impurities. Put it into the zinc solution at a ratio of 0.5%.

...

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PUM

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Abstract

The invention discloses a rare-earth multi-element alloy coating and a hot-dip galvanizing method thereof. The rare-earth multi-element alloy coating comprises the following main components: rare earth, aluminum, nickel, magnesium and zinc. The hot-dip galvanizing method comprises the following steps: (1) mix-melting intermediate alloys, namely Al-RE-Mg and Zn-Ni; (2) mix-melting a multi-element rare-earth alloy; (3) dredging slag; (4) casting; and (5) applying. The rare-earth multi-element alloy coating and the hot-dip galvanizing method thereof have the advantages that: firstly, difficulty of directly adding multiple elements with different melting points into a zinc liquid to melt and the impossibility problem of adding high-melting-point elemental metal elements into the zinc liquid to melt are solved; secondly, the multiple elements can be completely and quickly molten and dispersed, so that the hot-dop galvanizing method is easy to operate and control in a practical production process; thirdly, the dilution capability, the dispersive capacity, the mobility and the uniformity of the zinc liquid are strengthened, so that the zinc consumption is reduced by 5%-15%, the cost is reduced and the benefits are increased; and fourthly, the corrosion resistance of the rare-earth multi-element alloy coating is doubled in comparison with that of a conventional hot dip galvanized coating.

Description

technical field [0001] The invention relates to a rare earth multi-element alloy coating and its hot-dip galvanizing method, belonging to the [0002] material protection field. Background technique [0003] With the rapid development of military industry, photovoltaic power generation bracket, ship, rail transit, construction, electric power and other industries, the demand for hot-dip galvanized products continues to increase, and the quality and corrosion resistance of hot-dip galvanized products are also affected by the diversity of the environment. Higher requirements are put forward, and the synchronization of the traditional single alloy coating such as Zn-Ni, Al-RE, Zn-Al hot-dip galvanized products to the existing environment is not good. Contents of the invention [0004] The present invention proposes a rare earth multi-element alloy coating with low energy consumption and high performance and its hot-dip galvanizing method. Due to the addition of rare earth el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C18/04C23C2/06C22C1/03
CPCC22C18/04C22C1/03C23C2/06
Inventor 徐广林常本凤许卫国左志华
Owner 江苏中远稀土新材料有限公司
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