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Process for controlling foamed aluminium and its alloy identical pore rate and homogenization

A technology of aluminum alloy and porosity, which is applied in the field of foamed aluminum porosity control, can solve the problems of foamed aluminum that has not published the control of porosity consistency, and has not put forward requirements, so as to overcome the uncertainty of process parameters and avoid errors.

Inactive Publication Date: 2005-03-23
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there is no method for controlling the consistency of porosity in the preparation of foamed aluminum by foaming at home and abroad, which may be due to the application and no demand

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026]Embodiment 1 A method for uniformly controlling the porosity and uniformity of aluminum foam or its alloys, comprising: the first step: putting 850 grams of aluminum or aluminum alloy into a square crucible with a bottom surface of 100mm×100mm×200mm , the aluminum alloy can be an aluminum-copper alloy containing 4.5% copper, heated to 660-750 ° C to melt, adding 0.8%-3.0% calcium accounting for the weight of the aluminum or aluminum alloy, which can be selected as 2.5%, and using 200-600 rpm The speed per minute is used to stir and viscose the aluminum or aluminum alloy melt. The speed can be selected as 400 rpm. The viscosity measuring device connected to the stirring paddle is used to measure the viscosity of the melt in the process of viscosifying and stirring in real time. The melt is subjected to torque, and the torque is transmitted to the torque meter (ss010 torque meter produced by Japan Ono Company, composed of a torque detector and a display instrument TS2600) t...

Embodiment 2

[0027] Embodiment 2 A method for consistently controlling the porosity and uniformity of foamed aluminum or its alloys, comprising: the first step: putting 850 grams of pure aluminum or aluminum alloy into a cuboid crucible with a bottom surface of 100mm×100mm×200mm Here, the aluminum alloy can be an aluminum-copper alloy containing 4.5% copper, which is heated to 660-750°C and melted, and 0.8%-3.0% of calcium, which can be selected as 2.5% of the weight of the aluminum or aluminum alloy, can be added with 200-600 The rotation speed of rev / min is used to stir and viscose the aluminum or aluminum alloy melt. Stir the melt, receive the torque, and the torque is transmitted to the torque meter (ss010 torque meter produced by Ono, Japan, composed of a torque detector and a display TS2600) through the coupling. When the melt viscosity is 95 centiPa ~ 105 centi Just stop stirring at Pascal, the viscosity can be 98 centiPascals, 100 centiPascals, 102 centiPascals, the second step: ad...

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PUM

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Abstract

The controlling method of porosity and uniformity of foam aluminium or its alloy with consistency, which incldues appending calcium as 0.8%-3.0% (weigth percent) as aluminium or aluminium alloy in the melting aluminium alloy, stirring to increase viscosity towards melting body of aluminium or aluminium alloy with the rotary speed of 200-600 r / min, stop stirring when the viscosity of melting body is between 900 cp and 110 cp; adding TiH2 as 0.4-2.0% as aluminium or aluminium alloy and stirring, extracting stirring slurry holding between 650 deg.C and 700 deg.C, when the melting body rises to the porosity height needed, adopting coolnig every direction at the same time towards foam aluminium alloy melting body in order to obtain symmetrical porosity obturator foramen foam aluminium alloy.

Description

technical field [0001] The invention relates to a method for controlling the porosity of foamed aluminum, in particular to a method for uniformly controlling the porosity and uniformity of foamed aluminum or its alloys. Background technique [0002] At present, there is no method for controlling the consistency of porosity in the preparation of foamed aluminum by foaming at home and abroad, which may be due to the application and no demand. In the high-tech field, the impact energy absorption and light weight of aluminum foam require consistent control of the porosity of aluminum foam or alloy. Contents of the invention [0003] The invention provides a method for controlling the porosity and uniformity of the foamed aluminum or its alloys to make the porosity controllable and uniform. [0004] The present invention adopts following technical scheme: [0005] A method for uniformly controlling the porosity and uniformit...

Claims

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Application Information

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IPC IPC(8): C22C1/08
Inventor 何德坪戴戈尚金堂
Owner SOUTHEAST UNIV
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