Unlock instant, AI-driven research and patent intelligence for your innovation.

Composite metal sheet preparation method and device for forming gradient transition by using surface microstructure

A composite metal plate and composite metal technology, which is applied in the direction of metal rolling, metal rolling, lamination equipment, etc., can solve the problem that the stability of the joint surface of dissimilar metals in the composite plate cannot be guaranteed, the stability of the metal joint surface has not been improved, and the metal The plate structure cannot be meshed with each other to achieve good stability and composite quality, avoid sudden changes in mechanical properties, and achieve gentle gradient changes

Active Publication Date: 2021-12-21
SHANGHAI JIAO TONG UNIV
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this technology is: due to the sudden change in the material properties of the joint surface, this preparation method cannot guarantee the stability of the joint surface of dissimilar metals in the subsequent plastic processing of the prepared composite plate
The disadvantage of this technology is that the bonding strength in the rolling direction is indeed improved, but there is no corrugated engagement structure in the vertical rolling direction, that is, the stability of the metal bonding surface in this direction has not been improved.
[0006] After literature search, it was found that the Chinese patent publication number is: CN110548776A, and the name is: a method for preparing aluminum-magnesium-aluminum three-layer metal composite board with prefabricated cross corrugated interface, Use two rollers with intersecting surface corrugations to prefabricate the intersecting corrugated interface on the surface of the magnesium plate, and then cover a layer of aluminum plate on the upper and lower sides and roll out a composite plate to promote the bonding of the metal interface. The disadvantages of this technology are: The structure between the metal plates obtained by the method cannot mesh with each other, which may cause gaps or cavities during the rolling process, which is not conducive to the stability of the joint surface

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
  • Composite metal sheet preparation method and device for forming gradient transition by using surface microstructure
  • Composite metal sheet preparation method and device for forming gradient transition by using surface microstructure
  • Composite metal sheet preparation method and device for forming gradient transition by using surface microstructure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The purpose of the present invention is to provide a method for preparing a composite metal plate that utilizes the microstructure of the meshing surface to form a gradient transition at the material interface in view of the disadvantages of the existing composite plate preparation technology that are not conducive to subsequent plastic processing. In this embodiment, to prepare The SS316 stainless steel and TA17 titanium alloy clad plate with a thickness of 0.2 mm are taken as an example for illustration.

[0036] devices such as figure 2 As shown, it includes upper roller a1, stainless steel plate 2, lower roller a3, titanium alloy plate 4, transmission belt a5, limit transmission wheel a6, flat roller a7, and online induction annealing device a8.

[0037] refer to Figure 1-Figure 4 As shown, the clad plate rolling and compounding steps, such as figure 1 Shown:

[0038] Preparation materials: select a stainless steel plate 2 and a titanium alloy plate 4 with a th...

Embodiment 2

[0046] refer to figure 1 , 3 , shown in 5, be prepared into the nickel alloy-copper-nickel alloy clad plate that total product thickness is 0.15mm, wherein clad plate rolling, composite device comprise upper strata roll b9, upper strata nickel alloy plate 10, middle strata roll 11, copper plate 12, The lower roller b13, the lower nickel alloy plate 14, the transmission belt b15, the limit transmission wheel b16, the flat roller b17, and the online induction annealing device b18.

[0047] Select two nickel alloy sheets with a thickness of 1mm, whose length is 2000m, and whose width is 800mm; select a copper sheet with a thickness of 2mm, whose length is 2000mm, and whose width is 800mm. Use 8% hydrochloric acid to pickle for 45 minutes to remove the surface oxide layer. The following operations are carried out under protective gas environment until the final treatment.

[0048] The slab is sent to a heating furnace for heating, wherein the upper layer nickel alloy plate 10 a...

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a composite metal sheet preparation method and a device for forming gradient transition by using a surface microstructure. The method comprises the following steps: 1) cleaning the surfaces of multiple layers of metal sheets to be compounded; (2) carrying out primary rolling on the surface of the metal plate by using a roller with a surface microstructure to form mutually meshed microstructures; (3) the primarily-pressed multiple layers of metal plates are joined together, and the surface microstructures of the adjacent metal plates are meshed with one another; (4) the multiple layers of metal plates with the surface structures meshed with one another are rolled again, and the composite metal plate with the needed thickness is obtained after multiple times of rolling and annealing treatment; and (5) the obtained composite metal plate is flattened and cut, and a product is obtained. Compared with the prior art, for the fuel cell polar plate needing subsequent plastic processing, the method disclosed by the invention can effectively relieve the problem of sudden change of the mechanical property of the composite plate bonding surface material, so that the composite quality of the composite plate is improved.

Description

technical field [0001] The invention relates to the technical field of composite plate preparation, and mainly provides a preparation method and device for a composite metal thin plate using surface microstructures to form a gradient transition layer. Background technique [0002] Metal composite panels are composite materials that combine two or more different metal materials through connection technology. By compounding different kinds of metals, the finally obtained metal composite sheet can have more excellent comprehensive properties than single metal materials. For example, metal bipolar plates in fuel cells need to have sufficient strength, good corrosion resistance to meet the needs of acidic working environments, and good electrical conductivity. The current general practice is to coat corrosion-resistant materials such as niobium and thallium on stainless steel plates, or to coat conductive materials such as carbon on titanium plates. By not using coatings but us...

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): B32B38/16B32B37/06B32B37/10B32B38/00B21B1/38B21B37/48B21B37/74B21H8/00
CPCB32B38/162B32B37/06B32B37/10B32B38/0012B32B38/0004B32B38/0036B21H8/005B21B1/38B21B37/48B21B37/74B32B2038/0048B21B2001/386B21B2261/20B21B2265/10B21B2265/12Y02E60/50
Inventor 徐竹田张浩明李夏楠邱殿凯彭林法
Owner SHANGHAI JIAO TONG UNIV