Extrusion method of metal composite board

A technology of metal compounding and extrusion method, which is applied in the field of metals and alloys, can solve the problems of composite materials such as uneven transverse structure and performance, serious anisotropy, and failure to meet the requirements of use.

Inactive Publication Date: 2015-01-28
CHONGQING UNIV
View PDF8 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these two methods both add magnesium and aluminum to the extruder simultaneously for extrusion, their purpose is mainly to form an aluminum alloy protective layer on the surface of the magnesium alloy, thereby improving its corrosion resistance, and in these two methods, the magnesium alloy is completely Covered by aluminum alloy, the lateral flow of the magnesium alloy extruded sheet is limited by the clad aluminum during extrusion, which easily produces uneven lateral distribution, which eventually leads to uneven la

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
  • Extrusion method of metal composite board
  • Extrusion method of metal composite board
  • Extrusion method of metal composite board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The extrusion method of the metal composite plate in this embodiment comprises the following steps:

[0031] 1) Take two cylindrical magnesium alloy ingots and aluminum alloy ingots of the same size and cut them along the central axis;

[0032] 2) Cleaning step 1) The cut surface of the obtained semi-cylindrical magnesium alloy and aluminum alloy ingot is polished to smooth and smooth;

[0033] 3) stack the semi-cylindrical magnesium alloy and aluminum alloy ingots after step 2) grinding (the cutting planes are opposite, such as figure 1 shown) and fixed with aluminum wire (to avoid macroscopic relative sliding during extrusion);

[0034] 4) Heating the complex in step 3) to 380° C. for 1 hour and then placing it in an extrusion device for extrusion;

[0035] 5) Tempering at 400° C. to obtain the extruded plate in step 4) to obtain a product.

Embodiment 2

[0037] The extrusion method of the metal composite plate in this embodiment comprises the following steps:

[0038] 1) Take two semi-cylindrical AZ31 magnesium alloy ingots and AZ61 magnesium alloy ingots respectively (the two ingots have the same length, diameter, and cross-sectional chord length, but different volumes);

[0039] 2) Cleaning step 1) The cut surface of the obtained semi-cylindrical AZ31 magnesium alloy ingot and AZ61 magnesium alloy ingot is polished to smooth and smooth;

[0040] 3) stack the semi-cylindrical AZ31 magnesium alloy ingot and the AZ61 magnesium alloy ingot in step 2) after grinding (the cut planes are opposite, such as figure 2 shown) and fixed with aluminum wire (to avoid macroscopic relative sliding during extrusion);

[0041] 4) Extruding the complex in step 3) at 400°C to obtain a product.

Embodiment 3

[0043] The extrusion method of the metal composite plate in this embodiment comprises the following steps:

[0044] 1) Divide the same cylindrical AZ31 magnesium alloy ingot into two parts along the axis;

[0045] 2) Cleaning the cut surfaces of the two semi-cylindrical AZ31 magnesium alloy ingots in step 1) and grinding them until smooth;

[0046] 3) The two semi-cylindrical AZ31 magnesium alloy ingots after step 2) are stacked together (the cut surfaces are opposite, such as image 3 shown) and fixed with aluminum wire (to avoid macroscopic relative sliding during extrusion);

[0047] 4) Extruding the complex in step 3) at 400°C to obtain a product.

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

No PUM Login to view more

Abstract

The invention discloses an extrusion method of a metal composite board. The extrusion method of metal composite board comprises the following steps: firstly, laminating and fixing homogeneous or heterogeneous metal blocks together; secondly, adding the raw material into an extruding barrel for extruding, and extruding the homogeneous or heterogeneous metal blocks from an extruding mould port simultaneously in the extruding process to obtain an extruded composite board, wherein in the extruding process, macroscopic sliding between the metal blocks on the two sides of each contact interface between the metal blocks does not exist, and extruding flow velocity difference of the same metal block between a position near the contact interface and a position far away from the contact interface exists. According to the extrusion method of the metal composite board, relatively large shear stress is introduced into the same metal block, so that grains can be significantly refined and the texture can be significantly weakened; according to the extrusion method of the metal composite board, only an extruding composite way is required to be changed and the extruding barrel is not required to be redesigned, so that the extrusion method of the metal composite board has relatively high production and research values.

Description

technical field [0001] The invention belongs to the field of metals and alloys, and relates to a metal forming method, in particular to a method for synchronous extrusion processing to produce metal composite plates. Background technique [0002] Magnesium alloy has the advantages of high specific strength and specific stiffness, good thermal conductivity and damping performance, excellent electromagnetic shielding performance and machining performance, and has a wide range of application values ​​in various fields such as aerospace, automobiles, electrical appliances, and communications. Since the crystal structure of magnesium alloy is hexagonal close-packed and lacks an independent slip system, processing is difficult. So far, most magnesium alloy products are mainly produced by casting, but casting products have shortcomings such as coarse structure and many defects, which lead to unsatisfactory mechanical properties, which greatly restricts the wide application of magne...

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
IPC IPC(8): B32B37/10B32B37/06B32B15/01
CPCB32B37/10B32B15/01B32B37/06
Inventor 蒋斌潘复生石东博何俊杰杨青山
Owner CHONGQING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap