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Hot-galvanized aluminum-magnesium alloy steel plate and production process thereof

An aluminum-magnesium alloy and production process technology, which is applied in hot-dip plating process, metal material coating process, coating and other directions, can solve the problems of backward production technology of hot-dip galvanized aluminum-magnesium alloy steel plate, etc. Corrosion resistance and high control accuracy

Active Publication Date: 2018-08-24
江苏克罗德科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to technical barriers, the production technology of domestic hot-dip galvanized aluminum-magnesium alloy steel sheets is relatively backward and needs to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A production process of hot-dip galvanized aluminum-magnesium alloy steel plate, comprising the following steps:

[0049] Put the zinc ingot into the zinc pot for heating and melting;

[0050] Put magnesium-zinc alloy ingots, aluminum-zinc alloy ingots and rare earths, the rare earths include cerium rare earths and lanthanum rare earths, take samples after melting, perform spectral analysis on the samples, measure each chemical composition, and then conduct zinc ingots, Continue to add magnesium-zinc alloy ingots, aluminum-zinc alloy ingots and rare earth, stir evenly, and then perform spectral analysis of the sample until the content requirements of the following components are met:

[0051] Aluminum: 0.22%;

[0052] Magnesium: 0.55%;

[0053] Cerium: 0.025%;

[0054] Lanthanum: 0.025%;

[0055] Antimony: <0.02%;

[0056] Zinc: the rest;

[0057] Smooth the steel plate, and then carry out chromic acid passivation treatment on the front;

[0058] Galvanizing the ...

Embodiment 2

[0060] A production process of hot-dip galvanized aluminum-magnesium alloy steel plate, comprising the following steps:

[0061] Put the zinc ingot into the zinc pot for heating and melting;

[0062] Put magnesium-zinc alloy ingots, aluminum-zinc alloy ingots and rare earths, the rare earths include cerium rare earths and lanthanum rare earths, take samples after melting, perform spectral analysis on the samples, measure each chemical composition, and then conduct zinc ingots, Continue to add magnesium-zinc alloy ingots, aluminum-zinc alloy ingots and rare earth, stir evenly, and then perform spectral analysis of the sample until the content requirements of the following components are met:

[0063] Aluminum: 0.2%;

[0064] Magnesium: 0.5%;

[0065] Cerium: 0.02%;

[0066] Lanthanum: 0.02%;

[0067] Antimony: <0.02%;

[0068] Zinc: the rest;

[0069] Smooth the steel plate, and then carry out chromic acid passivation treatment on the front;

[0070] Galvanizing the stee...

Embodiment 3

[0072] A production process of hot-dip galvanized aluminum-magnesium alloy steel plate, comprising the following steps:

[0073] Put the zinc ingot into the zinc pot for heating and melting;

[0074]Put magnesium-zinc alloy ingots, aluminum-zinc alloy ingots and rare earths, the rare earths include cerium rare earths and lanthanum rare earths, take samples after melting, perform spectral analysis on the samples, measure each chemical composition, and then conduct zinc ingots, Continue to add magnesium-zinc alloy ingots, aluminum-zinc alloy ingots and rare earth, stir evenly, and then perform spectral analysis of the sample until the content requirements of the following components are met:

[0075] Aluminum: 0.25%;

[0076] Magnesium: 0.6%;

[0077] Cerium: 0.03%;

[0078] Lanthanum: 0.03%;

[0079] Antimony: <0.02%;

[0080] Zinc: the rest;

[0081] Smooth the steel plate, and then carry out chromic acid passivation treatment on the front;

[0082] Galvanizing the stee...

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PUM

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Abstract

The invention discloses a hot-galvanized aluminum-magnesium alloy steel plate and a production process thereof. The hot-galvanized aluminum-magnesium alloy steel plate comprises a steel plate body anda plating layer on the surface of the steel plate body. The plating layer comprises the following components of aluminum, magnesium, cerium, lanthanum, antimony and zinc. A zinc ingot is placed in azinc pot to be heated and molten; a magnesium-zinc alloy ingot, an aluminum-zinc alloy ingot and rare earth are placed in, sampling is carried out after melting, a sample is subjected to spectral analysis, various chemical components are measured, the zinc ingot, the magnesium-zinc alloy ingot, the aluminum-zinc alloy ingot and the rare earth continue to be added according to the actual contents of the components, uniform stirring is carried out, and then spectral analysis of the sample is carried out till the content requirement of the components is met; the steel plate body is subjected to finishing, and then the front face is subjected to passivating treatment; and galvanization of the steel plate body is carried out, the steel plate body is preheated before being put in the pot, and the steel plate body is annealed after being galvanized. In this manner, according to the hot-galvanized aluminum-magnesium alloy steel plate and the production process thereof, corrosion resistance ofthe hot-galvanized aluminum-magnesium alloy steel plate is improved, and the plating layer is not prone to peeling off.

Description

technical field [0001] The invention relates to the field of galvanized steel sheets, in particular to a hot-dip galvanized aluminum-magnesium alloy steel sheet and a production process thereof. Background technique [0002] According to relevant information, in the 1990s, Japan’s Nisshin Steel and Nippon Steel did a lot of work on the research and development of hot-dip galvanized aluminum-magnesium alloy coated steel sheets, and made significant progress. Commercialized production, successively developed zinc-aluminum-magnesium alloy coated steel sheets with trade names such as ZAM, Super Dyma and Dymazinc. In recent years, major European steel companies, such as: ArcelorMittal, ThyssenKrupp, and Tata Steel have also successively developed coated steel plates with product names such as ZMEcoProtect, MagiZinc, and Magnelis, and BlueScope Australia is also 55% On the basis of the aluminum-zinc alloy coating, a new generation of ZINCALUME magnesium-coated steel sheets has be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06C22C18/00C22C1/03C23C2/40C23C2/28
CPCC22C1/03C22C18/00C23C2/06C23C2/28C23C2/40
Inventor 刘开进
Owner 江苏克罗德科技有限公司
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