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

Low-cost and high-efficiency preparation method of steel/magnesium laminar composite plate strip

A composite plate strip, low-cost technology, applied in the field of steel/magnesium/steel layered composite plate strip, steel/magnesium layered composite plate strip with low cost and high efficiency, steel/magnesium layered composite plate strip, It can solve the problems of large coil weight, limited width and length, high equipment requirements, etc., achieve high interface bonding strength, reduce the requirements of the rolling mill, and achieve the effect of low equipment requirements

Active Publication Date: 2021-08-31
UNIV OF SCI & TECH BEIJING
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, both aluminum or zinc can react with iron and magnesium to form intermetallic compounds, resulting in low interfacial bonding strength of the composite plate
In addition, this method also has the following disadvantages: (1) it is necessary to heat the magnesium / steel composite blank under vacuum or inert gas atmosphere conditions, the preparation process is long, and the equipment requirements are high, which increases the production cost of the composite plate; ( 2) The size of the vacuum heat treatment equipment limits the width and length of the composite plate, it is difficult to realize continuous production in the true sense, and it is also impossible to prepare large-size and heavy coils with thick magnesium layers (or the magnesium layer is much thicker than the steel layer) ) steel / magnesium layered composite plate strip
However, this method needs to vacuum-pack the blanks with a metal sheath before hot-rolling and cladding, which limits the width and length of the steel / magnesium layered clad strips that can be produced, making it difficult to prepare large-size and heavy-weight rolls. Steel / magnesium layered composite plate strip with thicker magnesium layer (or much thicker magnesium layer than steel layer)

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
  • Low-cost and high-efficiency preparation method of steel/magnesium laminar composite plate strip
  • Low-cost and high-efficiency preparation method of steel/magnesium laminar composite plate strip
  • Low-cost and high-efficiency preparation method of steel/magnesium laminar composite plate strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The 20# steel strip blank with a thickness of 1mm and the AZ31 magnesium alloy strip blank with a thickness of 1mm are used as raw materials to prepare 20# steel / AZ31 magnesium alloy / 20# steel layered composite plate strip .

[0040] The 20# steel strip and the AZ31 magnesium alloy strip are softened and annealed respectively. The softening and annealing system of the 20# steel strip is 910°C for 1h furnace cooling, and the softening annealing system for the AZ31 magnesium alloy strip is 350°C. 5h furnace cooling;

[0041] Use an angle grinder equipped with louvers to perform off-line mechanical grinding on the surface of the 20# steel strip blank and the AZ31 magnesium alloy strip blank to be compounded, remove the pollutants and oxide layer on the surface to be compounded, and obtain a clean and rough surface to be compounded , the direction of the grinding stripes formed by mechanical grinding is perpendicular to the length direction of the 20# steel strip blank and...

Embodiment 2

[0049] 20# steel / pure magnesium layered composite strips were prepared from 20# steel strips with a thickness of 2mm and pure magnesium strips with a thickness of 2mm and 10mm respectively.

[0050] Soft annealing treatment is carried out on 20# steel strip and pure magnesium strip respectively. The softening annealing system of 20# steel strip is 900℃ for 2h furnace cooling, and the softening annealing system for pure magnesium strip is 360℃ for 4h. cold;

[0051] Use an angle grinder equipped with a grinding wheel to perform off-line mechanical grinding on the surface of the 20# steel strip blank and the pure magnesium strip blank with a thickness of 2 mm to remove the pollutants and oxide layer on the surface to be composited, and obtain a clean and rough surface. Composite surface, the direction of the grinding stripes formed by mechanical grinding is perpendicular to the length direction of the 20# steel strip blank and the pure magnesium strip blank;

[0052] The 20# st...

Embodiment 3

[0059] Q235 steel strips with a thickness of 1mm in coils and ZK60 magnesium alloy strips with a thickness of 1mm and 2mm in coils are used as raw materials to continuously prepare Q235 steel / ZK60 magnesium alloy / Q235 steel in coils Laminated composite panel strip.

[0060] Soft annealing treatment is carried out on Q235 steel strips and ZK60 magnesium alloy strips in coil form respectively. The softening annealing system of 20# steel strips is furnace cooling at 890°C for 2 hours, and the softening annealing system of ZK60 magnesium alloy strips is 370 ℃ heat preservation 5h furnace cooling;

[0061] Use uncoiling equipment 1 to uncoil Q235 steel strips with a thickness of 1mm in coils and ZK60 magnesium alloy strips with a thickness of 1mm in coils, and use online grinding equipment 2 equipped with louvers to respectively uncoil ZK60 magnesium On-line mechanical grinding of alloy strip blank and Q235 steel strip blank to be compounded surface to remove pollutants and oxide ...

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a low-cost and high-efficiency preparation method of a steel / magnesium laminar composite plate strip, and belongs to the technical field of metal laminar composite material preparation. The method comprises the following steps of firstly, softening and annealing steel and magnesium plate strip blanks, mechanically grinding the surfaces to be compounded of the steel and magnesium plate strip blanks, carrying out steel / magnesium laminated assembly, heating at 150 DEG C-300 DEG C, carrying out pre-rolling compounding to obtain a steel / magnesium pre-compounded plate strip, carrying out stress relief annealing, mechanically grinding the surfaces to be compounded of the steel / magnesium pre-compounded plate strip and the magnesium plate strip blank, carrying out (steel / magnesium) / magnesium laminated assembly, heating at 310 DEG C-400 DEG C, carrying out final rolling compounding to obtain the steel / magnesium final composite plate strip, and finally, carrying out diffusion annealing to obtain the steel / magnesium laminar composite plate strip. According to the technical scheme, high-strength metallurgical bonding between magnesium and steel can be achieved, and the method is particularly suitable for preparing the steel / magnesium laminar composite plate strip with the large size and the large coil weight, and the magnesium layer of the steel / magnesium laminar composite plate strip is far thicker than the steel layer.

Description

technical field [0001] The invention belongs to the technical field of metal layered composite material preparation, and specifically relates to a low-cost and high-efficiency preparation method for steel / magnesium layered composite plate strips, which is especially suitable for preparing large-size and heavy coils with thick magnesium layers or far-reaching magnesium layers. Steel / magnesium laminated clad plate strip or steel / magnesium / steel laminated clad plate strip thicker than the steel layer. Background technique [0002] Steel / magnesium (including steel / magnesium / steel) layered composite plate strip has the advantages of low cost and excellent mechanical properties of steel and low density and high damping performance of magnesium. It is a low-cost lightweight, High-strength, vibration-absorbing structure-function integrated new materials have broad application prospects in the fields of automobiles, ships, rail transit, aerospace, and national defense. In the servic...

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): B21C37/02C21D1/26C21D1/30C21D1/32C21D8/02C21D9/52C22F1/06
CPCB21C37/02C21D1/32C21D9/52C22F1/06C21D1/30C21D1/26C21D8/0247
Inventor 刘雪峰孙延蓝石章智
Owner UNIV OF SCI & TECH BEIJING
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