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A method for preparing foamed aluminum sandwich panels by liquid-phase mixed rolling and cladding

A technology of rolling cladding and liquid phase mixing, which is applied in metal rolling and other directions, can solve the problems of difficult control of the thickness and core layer structure of aluminum foam sandwich panels, complex production equipment, and high blank loss rate, so as to reduce the free boundary , low manufacturing cost, and improved utilization

Active Publication Date: 2020-04-07
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the above-mentioned prior art, due to the use of powder metallurgy and liquid phase casting and rolling, the production equipment is complicated, the process flow is long, the production cost is high, the blank loss rate is high, and the thickness and core layer structure of the foamed aluminum sandwich panel are not easy to produce. control

Method used

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  • A method for preparing foamed aluminum sandwich panels by liquid-phase mixed rolling and cladding
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  • A method for preparing foamed aluminum sandwich panels by liquid-phase mixed rolling and cladding

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Embodiment 1

[0036] A method for preparing a foamed aluminum sandwich panel by liquid phase mixed rolling and coating is carried out according to the following steps:

[0037] (1) A quaternary aluminum-silicon-magnesium-calcium alloy in which Si accounts for 8% of the aluminum alloy used, Mg accounts for 1% of the aluminum alloy used, and Ca accounts for 1% of the aluminum alloy used. Melt at 730°C and hold for 15 minutes to form an aluminum alloy melt.

[0038] (2) Lower the temperature of the above aluminum alloy melt to 590℃, add the stabilizer silicon carbide powder to it first, then add the foaming agent titanium hydride, and stir evenly, the stirring speed is 500r / min, the stirring time is 5min, then The uniformly stirred aluminum alloy melt is quenched at a rate of 30°C / s for 10 minutes to obtain a foamable preform. The stabilizer silicon carbide powder and the foaming agent titanium hydride need to be preheated at 350℃ for 4 hours before being added to the aluminum alloy melt. The sili...

Embodiment 2

[0042] A method for preparing a foamed aluminum sandwich panel by liquid phase mixed rolling and coating is carried out according to the following steps:

[0043] (1) The aluminum-silicon-magnesium-calcium quaternary alloy with Si accounting for 12% by mass of the aluminum alloy used, Mg accounting for 4% by mass of the aluminum alloy used, and Ca accounting for 3% by mass of the aluminum alloy used as the matrix, Melted at 690°C and held for 25 minutes to form an aluminum alloy melt.

[0044] (2) Lower the temperature of the above aluminum alloy melt to 570°C, add uniformly mixed stabilizer alumina powder and foaming agent titanium hydride to it, and stir evenly. The stirring speed is 3000r / min, and the stirring time is 2min. The uniformly stirred aluminum alloy melt is quenched for 5 minutes at a rate of 15° C. / s to obtain a foamable preform. The stabilizer alumina powder and the foaming agent titanium hydride need to be preheated at 400℃ for 2 hours before being added to the al...

Embodiment 3

[0048] A method for preparing a foamed aluminum sandwich panel by liquid phase mixed rolling and coating is carried out according to the following steps:

[0049] (1) A quaternary aluminum-silicon-magnesium-calcium alloy with Si accounting for 10% of the aluminum alloy used, Mg accounting for 2% of the aluminum alloy used, and Ca accounting for 2% of the aluminum alloy used as the matrix, Melted at 700°C and held for 17 minutes to form an aluminum alloy melt.

[0050] (2) Lower the temperature of the above-mentioned aluminum alloy melt to 580℃, first add the foaming agent titanium hydride to it, and stir it evenly, the stirring speed is 2000r / min, the stirring time is 3min, and then the evenly stirred aluminum alloy melt Quickly cool for 8 minutes at a rate of 20°C / s to obtain a foamable preform. The blowing agent titanium hydride needs to be preheated at 370°C for 3 hours before being added to the aluminum alloy melt. The addition amount of titanium hydride accounts for 1.2% of t...

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Abstract

The invention belongs to the field of preparation of layered composite materials, and discloses a preparation method of a method for preparing foamed aluminum sandwich panels by liquid-phase mixed rolling and cladding. The specific steps are as follows: firstly, the aluminum alloy is melted and kept warm; secondly, after the temperature of the obtained aluminum alloy melt is lowered to a certain value, a stabilizer and a foaming agent are added to it and stirred evenly, and then quenched for a period of time at a certain quenching rate. time to obtain a foamable preform; then, the foamable preform is embedded in an aluminum sleeve and rolled to obtain a foamable sandwich structure with the preform; finally, the above-mentioned foamable sandwich structure is put into Rapid foaming in an infrared foaming furnace can produce an aluminum / aluminum composite foamed aluminum sandwich panel with a metallurgical bonding interface, which greatly improves the mechanical properties of the foamed aluminum material and broadens the application range of the foamed aluminum material.

Description

Technical field [0001] The invention belongs to the field of layered composite material preparation, and specifically relates to a method for preparing a foamed aluminum sandwich panel by liquid phase mixed rolling and coating. Background technique [0002] A sandwich composite structure made of foam aluminum as the core material and metal plate as the panel, referred to as foam aluminum sandwich panel. Foamed aluminum sandwich panels have the characteristics of light weight, high specific stiffness, high specific strength, shock absorption and energy absorption, and have wide application prospects in the fields of transportation, aerospace and construction. [0003] The existing methods for preparing foamed aluminum sandwich panels include powder coating rolling method and liquid phase casting rolling method. German patent DE4426627C2 discloses a method for preparing foamed aluminum sandwich panels by powder coating and rolling. This method first fully mixes aluminum powder, foa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/38C22C21/02C22C1/08
CPCC22C1/08C22C21/02B21B1/38B21B2001/383B21B2001/386C22C1/086
Inventor 罗洪杰吴林丽张志刚徐建荣梁小龙
Owner NORTHEASTERN UNIV LIAONING
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