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Production method of aluminum and magnesium alloy laminated composite plate of sandwich structure

A technology of aluminum-magnesium alloy and magnesium alloy plate, which is applied in the direction of metal processing equipment, manufacturing tools, welding equipment, etc., can solve the problems of reduced production efficiency, large bending deformation of composite plates, and increased costs, so as to improve production efficiency and flatness High, evenly bonded effect

Inactive Publication Date: 2015-07-08
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in conventional explosive welding, the substrate is placed horizontally on the foundation, and under the high-speed collision between the detonation wave and the cladding plate, the composite plate will produce a large bending deformation
In order to reduce this kind of deformation, higher requirements are often put forward for the foundation, that is, it must be flat, uniform, and dense, which reduces production efficiency and increases costs.

Method used

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  • Production method of aluminum and magnesium alloy laminated composite plate of sandwich structure
  • Production method of aluminum and magnesium alloy laminated composite plate of sandwich structure
  • Production method of aluminum and magnesium alloy laminated composite plate of sandwich structure

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The invention provides a method for preparing a sandwich structure aluminum-magnesium alloy layered composite board, the specific steps are as follows:

[0027] Step 1. Using the magnesium alloy plate as the substrate 5 and the aluminum alloy plate as the cladding plate 6, the surfaces of the cladding plate 6 and the substrate 5 are polished to remove the oxide layer; the substrate 5 is placed vertically, and the two sides of the substrate 5 are vertically The cladding plate 6 and the explosive box 8 are arranged vertically and symmetrically. The explosive box 8 is filled with explosives. The side wall bonded between the explosive box 8 and the cladding plate 6 is a plexiglass plate 7 with a thickness of 2mm. When filling, the explosive box 8 should be placed vertically , then pour powdered explosives into it, and slightly shake the explosive box 8 up and down when pouring, so that the explosives are solid and evenly distributed, and the filling situation of the explosiv...

example 1

[0031] Example 1: Sandwich structure layered composite plate of 2024Al alloy plate and AZ31 magnesium alloy plate and ballistic performance test

[0032] The cladding aluminum alloy is 2024Al with a thickness of 2.5mm, the substrate magnesium alloy is AZ31 with a thickness of 10mm, and the gap between the cladding and the substrate is 1-2mm. Explosives are expanded ammonium nitrate explosives with a detonation velocity of 2100-2300m / s, the charge thickness is 10mm, and detonating cords and No. 8 industrial electric detonators are used to detonate the explosives. The macroscopic morphology of the prepared sandwich structure composite board is as follows: image 3 As shown, the size is 250*200*15mm.

[0033] The anti-ballistic properties of the prepared composite panels were evaluated by the method of determining the residual penetration depth (ie, DOP method). The 15mm thick pure 2024Al plate and the 15mm thick Al-Mg-Al explosive clad plate were tested respectively. The cali...

example 2

[0034] Example 2: Sandwich structure layered composite plate of 1060Al and AZ31 magnesium alloy plate

[0035] According to the parameters in Example 1, the cladding plate was replaced with 1060Al, and the metallographic observation was carried out after welding. The corrugation was uniform and the bonding was good. The interface shear strength test was carried out, and fracture occurred on the aluminum side, and the shear strength was greater than 50MPa.

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Abstract

The invention discloses a production method of an aluminum and magnesium alloy laminated composite plate of a sandwich structure. Aluminum and magnesium materials which are difficult to be welded by conventional methods are welded together by an explosive welding technology and accordingly the large size of composite plate can be produced and the process is simple and easy to operate. The production method comprises step 1, serving a magnesium alloy plate as a base plate, serving aluminum alloy plates as covering plates, performing polishing treatment on the surface of each covering plate and the surface of the base plate, removing an oxide layer, placing the base plate vertically, vertically and symmetrically arranging the corresponding covering plate and an explosive box on each side of the base plate in turn, arranging explosives in each explosive box, bonding each explosive box and the corresponding covering plate together and reserving a gap between the base plate and each covering plate arranged on the corresponding side of the base plate through a clearance column; step 2, arranging lateral side momentum blocks on the bilateral sides of the installed base plate and covering plates respectively and arranging a bottom momentum block at the bottom of the installed base plate and covering plates; step 3, detonating the explosives and achieving the explosive welding of the aluminum and magnesium alloy laminated composite plate which is of a sandwich structure.

Description

technical field [0001] The invention relates to the field of engineering materials, in particular to a method for preparing a sandwich-structured aluminum-magnesium alloy layered composite plate. Background technique [0002] Today, the energy problem is becoming more and more severe, and the use of lightweight structural materials to reduce weight has become an important means for the automotive, defense, and aerospace industries. Among the existing structural materials, aluminum alloy has high strength, comparable to steel, low density, ability to withstand plastic deformation, and certain corrosion resistance, so it is widely used in civil and military fields. For example, Tesla electric vehicles with aluminum alloy frames not only ensure sufficient protection strength, but also reduce energy consumption; such as combat vehicles with aluminum alloy armor, the protection performance and mobility are greatly improved. [0003] At the same time, magnesium alloy, currently t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/08B23K20/233B23K20/24B23K101/18B23K103/18
CPCB23K20/08B23K20/2333B23K20/24B23K2101/18B23K2103/18
Inventor 陈鹏万周强冯健锐戴开达安二峰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY