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Foamed closed-cell aluminum foam and preparation technique thereof

A closed-cell aluminum foam and foam molding technology, which is applied in the field of foam molding closed-cell aluminum foam and its preparation, and can solve problems such as high cost and difference in mechanical properties.

Inactive Publication Date: 2016-07-13
贾维 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The mechanical structure of closed-cell aluminum foam is superior, but in the past, closed-cell aluminum foam materials were processed into mechanical structures by various other methods. Formed closed-cell aluminum foam is far from

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. The micron titanium hydride (TiH2) foaming agent with a particle size of 30 μm is pretreated with a baking furnace at a rate of 100 ° C per hour to increase the temperature to a constant temperature of 500 ° C for 5 hours.

[0027] 2. Heat pure aluminum to 680°C in an aluminum melting furnace to melt, add alumina powder with a weight ratio of 4% and stir with a stirrer at 1500 rpm for 120 seconds to increase the viscosity of the aluminum liquid, and cool down the aluminum liquid after the viscosity increase Keep warm at 610°C for later use.

[0028] 3. Add pretreated titanium hydride (TiH2) with a weight ratio of about 2% to the molten aluminum, and stir for 55 seconds with a stirrer at 1500 rpm.

[0029] 4. Put an appropriate amount of aluminum liquid that has been thickened and stirred with a foaming agent into an automobile engine bracket molding mold, heat up to 680°C in a heating furnace, and then cool naturally after fully foaming. Open the mold to obtain foam ...

Embodiment 2

[0031] 1. The micron titanium hydride (TiH2) foaming agent with a particle size of 30 μm is pretreated in an oven at a temperature gradient of 100 ° C per hour, and is kept at a constant temperature of 500 ° C for 5 hours.

[0032] 2. Heat aluminum 1005 to 680°C in an aluminum melting furnace to melt, add alumina powder with a weight ratio of 4% and stir with a stirrer at 1500 rpm for 120 seconds to increase the viscosity of the aluminum liquid, and cool down the aluminum liquid after the viscosity increase Keep warm at 610°C for later use.

[0033] 3. Add pretreated titanium hydride (TiH2) with a weight ratio of about 2% to the molten aluminum, and stir for 55 seconds with a stirrer at 1500 rpm.

[0034] 4. Put an appropriate amount of aluminum liquid that has been thickened and stirred with a foaming agent into a 1200mm*600mm*200mm molding mold, heat up to 680°C in a heating furnace and cool naturally after foaming fully, and the foamed closed Cellular aluminum foam is used...

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Abstract

The invention provides foamed closed-cell aluminum foam and a preparation technique thereof.The preparation technique comprises: heating powdered titanium hydride (TiH2) 30 micrometers in particle size with a baking oven at a gradient speed of increase of 100 DEG C per hour, and holding the temperature raised to 500 DEG C for 5 hours; heating pure aluminum or aluminum alloy with an aluminum melting furnace to 680 DEG C for melting, adding 4% by weight of alumina powder, stirring for 100-120 S so that molten aluminum thickens, and cooling the thickened molten aluminum to 610 DEG C and holding the temperature for use; adding 2% by weight of pre-treated titanium hydride (TiH2) into the molten aluminum to be used, and stirring for 55 S; adding suitable thickened molten aluminum added with a foaming agent into a forming mold, heating in a heating furnace to 680 DEG C, holding the temperature until full foaming, naturally cooling, and opening the mold to obtain the formed closed-cell aluminum foam product.

Description

1. Technical field: [0001] The invention relates to a foamed closed-cell aluminum foam and its preparation technology 2. Background technology: [0002] Closed-cell aluminum foam is the first new material developed in recent years. The foam material is a foam-like material made of the original solid material through a special process. The foam aluminum belongs to the foam metal foam material. It can be divided into through-cell aluminum foam and closed-cell aluminum foam. [0003] Main technical indicators and parameters of closed-cell aluminum foam: [0004] Porosity: An important technical parameter of closed-cell aluminum foam, that is, the ratio of pores to slopes, conventional porosity: 70%-90% porosity is a range that is difficult to achieve very consistent. [0005] Pore ​​diameter: the specifications of the pores in aluminum foam, conventional pore diameter: a few tenths to a few millimeters (eg: 0.5-5mm). [0006] Density: The ratio of weight to volume of closed-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08C22C21/00
CPCC22C1/08C22C21/00
Inventor 贾维
Owner 贾维
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