Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Zinc-aluminum-magnesium steel plate and preparation method capable of effectively controlling black spots on surface of hot dipped zinc-aluminum-magnesium steel plate by CSP process

A zinc-aluminum-magnesium and steel plate technology is applied in the field of effectively controlling the black spots on the surface of hot-dip galvanized aluminum-magnesium steel plates by CSP process, and can solve the problem that the zinc-aluminum-magnesium steel plate cannot be guaranteed to have no black spots and cannot be well improved. Corrosion-resistant coating and substrate adhesion, can not reduce the formation of black spots of zinc-aluminum-magnesium steel plates, etc., to achieve good surface quality, good corrosion resistance and adhesion, and ensure the effect of corrosion resistance

Active Publication Date: 2020-02-07
GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
View PDF13 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the above-mentioned patents have improved zinc-aluminum-magnesium steel sheets, they cannot reduce the formation of black spots on the zinc-aluminum-magnesium steel sheets or cannot ensure that no black spots are formed on the zinc-aluminum-magnesium steel sheets, and thus cannot improve the corrosion resistance of the zinc-aluminum-magnesium steel sheets. property, bonding force between coating and substrate, etc.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Zinc-aluminum-magnesium steel plate and preparation method capable of effectively controlling black spots on surface of hot dipped zinc-aluminum-magnesium steel plate by CSP process
  • Zinc-aluminum-magnesium steel plate and preparation method capable of effectively controlling black spots on surface of hot dipped zinc-aluminum-magnesium steel plate by CSP process
  • Zinc-aluminum-magnesium steel plate and preparation method capable of effectively controlling black spots on surface of hot dipped zinc-aluminum-magnesium steel plate by CSP process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0134]This embodiment provides a zinc-aluminum-magnesium steel sheet, which includes a substrate and a coating layer disposed on the substrate, the chemical composition of the substrate is as follows: C: 0.057Wt%, Si: 0.015Wt%, Mn: 0.685Wt%, P: 0.015Wt%, S: 0.006Wt%, O: 0.0030Wt%, Als: 0.0352Wt%, Ca: 0.0032Wt%, and the rest are iron and unavoidable trace elements.

[0135] The chemical composition of the coating is as follows: Al: 10.53%, Mg: 2.67%, Si: 0.21%, Ni: 0.03%, Ce: 0.05%, and the rest is Zn and unavoidable impurities.

[0136] And Al / MgZn is formed in the coating 2 , Zn / MgZn 2 , Al / Zn / MgZn 2 and Al / Zn / Mg 2 Zn 11 , Mg at any part of the zinc-aluminum-magnesium steel plate 2 Zn 11 The mass content is less than 0.5%, and the MgZn in any part of the zinc-aluminum-magnesium steel plate 2 The mass content is greater than 17%.

[0137] This embodiment also provides a method for preparing the zinc-aluminum-magnesium steel sheet, which includes the following steps:

...

Embodiment 2

[0155] This embodiment provides a zinc-aluminum-magnesium steel sheet, which includes a substrate and a coating layer disposed on the substrate, the chemical composition of the substrate is as follows: C: 0.054Wt%, Si: 0.016Wt%, Mn: 0.675Wt%, P: 0.011Wt%, S: 0.005Wt%, O: 0.0028Wt%, Nb: 0.0246Wt%, Als: 0.0385Wt%, Ca: 0.0045Wt%, and the rest are iron and unavoidable trace elements.

[0156] The chemical composition of the coating is as follows: Al: 12.5%, Mg: 3.3%, Si: 0.3%, Ni: 0.05%, Ce: 0.06%, and the rest is Zn and unavoidable impurities.

[0157] And Al / MgZn is formed in the coating 2 , Zn / MgZn 2 , Al / Zn / MgZn 2 and Al / Zn / Mg 2 Zn 11 , Mg at any part of the zinc-aluminum-magnesium steel plate 2 Zn 11 The mass content is less than 0.5%, and the MgZn in any part of the zinc-aluminum-magnesium steel plate 2 The mass content is greater than 20%.

[0158] This embodiment also provides a method for preparing the above-mentioned zinc-aluminum-magnesium steel plate, which is ...

Embodiment 3

[0172] This embodiment provides a zinc-aluminum-magnesium steel sheet, which includes a substrate and a coating layer disposed on the substrate, the chemical composition of the substrate is as follows: C: 0.06Wt%, Si: 0.014Wt%, Mn: 0.701Wt%, P: 0.008Wt%, S: 0.003Wt%, O: 0.0029Wt%, Nb: 0.024Wt%, Als: 0.0432Wt%, Ca: 0.0045Wt%, and the rest are iron and unavoidable trace elements.

[0173] The chemical composition of the coating is as follows: Al: 9.5%, Mg: 1.5%, Si: 0.1%, Ni: 0.1%, Ce: 0.02%, and the rest is Zn and unavoidable impurities.

[0174] And Al / MgZn is formed in the coating 2 , Zn / MgZn 2 , Al / Zn / MgZn 2 and Al / Zn / Mg 2 Zn 11 , Mg at any part of the zinc-aluminum-magnesium steel plate 2 Zn 11 The mass content is less than 0.5%, and the MgZn in any part of the zinc-aluminum-magnesium steel plate 2 The mass content is greater than 15%.

[0175] This embodiment also provides a method for preparing the above-mentioned zinc-aluminum-magnesium steel plate, which is basi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
hardnessaaaaaaaaaa
crystal sizeaaaaaaaaaa
reflectanceaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of metallurgical corrosion prevention, in particular to a zinc-aluminum-magnesium steel plate and a preparation method capable of effectively controlling black spots on the surface of a hot dipped zinc-aluminum-magnesium steel plate by a CSP process. The zinc-aluminum-magnesium steel plate comprises a substrate and a plating layer arranged on the substrate; the substrate comprises the following chemical components of, by mass percent, 0.045-0.070% of C, 0.020-0.050% of Als, 0.0020-0.0050% of Ca, and the balance Fe and inevitable impurities; the plating layer comprises the following chemical components of, by mass percent, 9-13% of Al, 1-4% of Mg, 0.01-0.3% of Si, 0.01-0.1% of Ni, the balance Zn and inevitable impurities. By controlling the chemical components of the plating layer and the substrate as well as the dosage of each chemical composition, the formed zinc-aluminum-magnesium steel plate is ensured to have good surface quality and noblack spot defects on the surface, so that the zinc-aluminum-magnesium steel plate has good corrosion resistance, binding force and the like.

Description

technical field [0001] The invention relates to the technical field of metallurgical anticorrosion, in particular to a zinc-aluminum-magnesium steel sheet and a preparation method for effectively controlling the black spots on the surface of a hot-dip galvanized aluminum-magnesium steel sheet by a CSP process. Background technique [0002] With the development of the iron and steel industry, construction, highways, household appliances, automobile machinery manufacturing and other industries have also developed rapidly. Due to the different use environments, the corrosion resistance of steel components is very challenging. Surface-coated galvanized, aluminum-zinc and zinc-iron alloys and other products are due to their good corrosion resistance, formability, weldability and coating. It is widely used because of its high performance. With the continuous improvement of the use requirements, the corrosion resistance of the existing galvanized products can no longer meet the req...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06C23C2/02C23C2/40C22C33/04C22C18/04C22C38/02C22C38/04C22C38/06C22C38/12C22C38/14C21D1/26C21D6/00C21D8/02C21D9/00B21B1/22B21B1/26
CPCC23C2/06C23C2/02C23C2/40C22C33/04C22C18/04C22C38/02C22C38/04C22C38/06C22C38/002C22C38/12C22C38/14C21D1/26C21D6/005C21D6/008C21D8/0221C21D9/0081B21B1/26B21B1/22B21B2001/221
Inventor 杜昕邹明李积鹏高伟民赵永科董世文王瑾张国堂孙朝勇刘海军
Owner GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com