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Method for preparing multielement corrosion-resistant hot-dipping alloy coating layer and raw materials

A metal coating and alloy technology, applied in the direction of hot-dip plating process, metal material coating process, coating, etc., can solve the problems of unfavorable wide application, complicated stainless steel production process, high cost, etc., so as to save production cost and improve fluidity , the effect of increasing the production cost

Active Publication Date: 2012-02-08
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alloying is to add alloy elements to steel to produce stainless steel to improve its corrosion resistance, but the production process of stainless steel is complicated and the cost is high, so it is not conducive to its wide application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The specific composition of the alloy coating is: Al content is 1.50%, Mg content is 1.00%, Si content is 0.05%, metal La content is 0.10%, and the balance is Zn. A total of 1000Kg Zn-Al-Mg-Si-RE mother is smelted For alloy ingots, the dosage of various raw materials is:

[0032] (1) Magnesium ingot weight: W Mg =1000×1.00%=10(Kg);

[0033] (2) Al-Si alloy weight: W Al-Si =1000×0.05% / 10%=5 (Kg), wherein 10% is the percentage content of Si in the Al-Si alloy;

[0034] (3) Al-La alloy weight: W Al-RE =1000×0.10% / 10%=10 (Kg), wherein 10% is the percentage content of La in the Al-La alloy;

[0035] (4) Weight of Al ingot: W Al =1000×1.5%-5×(1-10%)-10×(1-10%)=1.5(Kg);

[0036] (5) Weight of Zn ingot: W Zn =1000-10kg-5kg-10kg-1.5kg=973.5 (kg).

[0037] Smelting method of Zn-Al-Mg-Si-RE master alloy:

[0038](1) Put 973.5kg of zinc ingots into a resistance furnace, heat to 670°C, and keep warm for 10 minutes.

[0039] (2) Press 1.5Kg of aluminum ingots into the molte...

Embodiment 2

[0044] The specific composition of the alloy coating: the content of Al is 3.00%, the content of Mg is 1.20%, the content of Si is 0.10%, the content of RE is 0.15%, and the balance is zinc.

[0045] The calculation method of Zn-Al-Mg-Si-RE master alloy ingredients, taking the smelting of 1000Kg Zn-Al-Mg-Si-RE master alloy ingot as an example, the calculation method is:

[0046] (1) The weight of Mg ingot is W Mg =1000kg×1.20%=12Kg;

[0047] (2) Weight W of Al-Si alloy Al-Si =1000kg×0.10% / 15%=6.67Kg, wherein 15% is the percentage content of Si in the Al-Si alloy;

[0048] (3) Weight W of Al-Ce alloy Al-RE =1000kg×0.10% / 12%=8.33Kg, 12% of which is Al-Ce

[0049] The percentage content of Ce in the alloy;

[0050] (4) The weight of the Al ingot is W Al =1000kg×3.00%-6.67×(1-15%)-8.33×(1-12%)=17Kg;

[0051] (5) The weight of Zn ingot is W Zn =1000kg-12kg-6.67kg-8.33kg-17kg=973.5kg. Smelting method of Zn-Al-Mg-Si-RE master alloy:

[0052] (1) Weigh 973.5kg of industrial ...

Embodiment 3

[0058] The specific composition of the alloy coating: the content of Al is 4.50%, the content of Mg is 0.80%, the content of Si is 0.15%, the content of Nd is 0.30%, and the balance is Zn.

[0059] The calculation method of Zn-Al-Mg-Si-RE master alloy ingredients, taking the smelting of 1000Kg Zn-Al-Mg-Si-RE master alloy ingot as an example, the calculation method is:

[0060] (1) The weight of Mg ingot is W Mg =1000kg×0.80%=8Kg;

[0061] (2) Weight W of Al-Si alloy Al-Si =1000kg×0.15% / 20%=7.5Kg, wherein 20% is the percentage content of Si in the Al-Si alloy;

[0062] (3) Weight W of Al-Nd alloy Al-RE =1000kg×0.30% / 15%=20Kg, where 15% is the percentage content of Nd in the Al-Nd alloy;

[0063] (4) The weight of the Al ingot is W Al =1000kg×4.50%-7.5×(1-20%)-20×(1-15%)=22Kg;

[0064] (5) The weight of Zn ingot is W Zn =1000kg-8kg-7.5kg-20kg-22kg=942.5kg.

[0065] Smelting method of Zn-Al-Mg-Si-RE master alloy:

[0066] (1) Heat 942.5kg Zn ingot to 690°C in a resistanc...

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Abstract

The invention specifically relates to a metal coating layer alloy comprising Zn and Al. The coating layer alloy is characterized by further comprising elements of Mg, Si and RE, wherein the coating layer alloy comprises the following components in percentages by weight: 1.00-7.00% of Al, 0.05-1.50% of Mg, 0.05-0.30% of Si, 0.05-0.50% of RE and the balance of Zn. By using the steel plate coating layer prepared by the invention, the corrosion resistance is improved by more than 20 times compared with a single zinc coating layer.

Description

technical field [0001] The invention relates to a zinc-based multi-element hot-dipping alloy coating and a method for preparing the raw materials used therein. Background technique [0002] Steel is the most widely used and used metal material in the existing industry, but steel is easily corroded in water, soil and the atmosphere, so how to keep the properties of steel materials from being affected and damaged for a long time is very important. Furthermore, certain anti-corrosion measures must be taken. Generally speaking, there are two types of anticorrosion methods for steel materials: one is alloying, and the other is metal surface coating. Alloying is to add alloy elements to steel to produce stainless steel to improve its corrosion resistance. However, the production process of stainless steel is complicated and the cost is high, so it is not conducive to its wide application. Hot-dip galvanizing and its zinc alloy are one of the more common and effective processes i...

Claims

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Application Information

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IPC IPC(8): C22C18/04C22C18/00C22C1/03C23C2/06
Inventor 李世伟涂赣峰高波郝仪尹少华江飞于福晓左良
Owner NORTHEASTERN UNIV
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