CN106399740A - Foamed aluminum material and preparation method thereof - Google Patents
Foamed aluminum material and preparation method thereof Download PDFInfo
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- CN106399740A CN106399740A CN201610862090.4A CN201610862090A CN106399740A CN 106399740 A CN106399740 A CN 106399740A CN 201610862090 A CN201610862090 A CN 201610862090A CN 106399740 A CN106399740 A CN 106399740A
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- foamed aluminium
- foaming
- foamed
- aluminium material
- foaming agent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
- C22C1/083—Foaming process in molten metal other than by powder metallurgy
- C22C1/086—Gas foaming process
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention belongs to the technical field of foamed aluminum preparation, and particularly relates to a foamed aluminum material and a preparation method thereof. The foamed aluminum material is prepared from an aluminum alloy, a foaming agent and an additive under the conditions of high-temperature foaming and gradient cooling. By mass, the aluminum alloy is 94%-98%, the foaming agent is 1%-5%, and the additive is 1%-4%. Compared with the prior art, the foamed aluminum material has the technical benefits that the foamed material has good damping performance and vibration reducing performance; and the gradient cooling method is adopted in the process of preparing foamed aluminum, the prepared foamed aluminum material has a gradient structure, and the damping performance and the vibration reducing performance of the foamed aluminum material are further enhanced.
Description
Technical field
The invention belongs to Preparation Methods of Foam Aluminum field is and in particular to a kind of foamed aluminium material and preparation method thereof.
Background technology
Industrial and scientific and technical continuous progress, the development of too busy to get away basic material and innovation.The appearance of foam metal, be
Many processes provide new thinking and solution.Foam metal is different from other chemical fibre porous materials, except
Uniform hole and the characteristic such as bigger specific surface area and lightweight, also have excellent Mechanical Property of Metal and hot, electric simultaneously
Etc. physical characteristics, and it is more easy to regenerate than polymeric foam, these superior functions make the range of application that foam metal is related to more and more wider.
This kind of metal porosity is high, and pore diameter can reach grade.
Obturator-type metal foam is a kind of multifunctional novel structural material, has that relative density is little, specific surface area big, ratio
The features such as high mechanical properties, damping characteristics are good, can be widely applied to Aero-Space, military project, ship, track train, automobile
And the numerous areas such as building, machinery.
The preparation method of closed pore metal foam mainly includes Melt Stirring casting and powder metallurgic method.Melt Stirring is cast
Aluminum is melted by method of making first at a certain temperature, and adds the additive with increase melt viscosity effect in aluminum melt, then
Foaming agent is added among aluminum melt and makes it dispersed by stirring, foaming agent to be controlled does not decompose in this course
Or decompose on a small quantity, the base substrate of densification is obtained to mixed uniformly aluminum melt by pouring into a mould.Then the base substrate obtaining is added
Heat, to more than solidus temperature, makes base substrate expand using the gas that foaming agent decomposes produce, finally will be molten for being in of formation
Melt the foams cooling of state, you can obtain metal foaming material.
Aluminium powder is sufficiently mixed by powder metallurgic method first with foaming agent, additive, then mixture is pressed into close
Real base substrate, then carries out heat temperature raising to this base substrate, makes temperature rise to more than solidus held for some time, using foaming
Agent is decomposed the gas base substrate in the molten state producing and is internally formed countless pores, finally cooled can get metal foam
Material.
Foamed aluminium is a kind of porous material of high porosity, its proportion is little, heat-resisting, sound-absorbing, antidetonation, have special physics and
Chemical property.It can not only be used for functional material, but also as structural material, in machinery, electronics, building, transportation, lightization
The fields such as work, military project have wide practical use, and market prospect is tempting, such as lightweight decoration construction material, light industry filler
And catalyst, heat exchanger, fire proofing, sound insulation noise elimination, damping anti-impact, electromagnetic shielding etc..As the excellent sound absorption material of a class
Material and weight-reducing material, foamed aluminum materials are widely used under construction.Architectural Equipment have many components need to light weight, rigidity big with
Non-flame properties material manufacture, or with this kind of material as supporting frame.Simultaneously foamed aluminum materials have isotropism, do not burn,
The complete feature of holding structure, has sizable application potential in aerospace industry.As existed with the honeycomb texture of made with aluminum foil
Obtain long in aerospace vehicle and be widely applied, but complex manufacturing, manufacturing cost is high, and foamed aluminum materials are then
Its good succedaneum.
The preparation method of foamed aluminium is a lot, is most commonly that powder metallurgic method and casting.But existing prepare foam
The method of aluminum is mostly relatively costly, and the damping capacity of obtained material and damping performance are general, with less gradient heat conduction
Ability.
Content of the invention
The present invention is directed to existing foamed aluminium material damping capacity and damping performance does not possess the gradient capacity of heat transmission typically and, and
A kind of foamed aluminium material is provided.
The technical scheme realized the object of the invention and adopt is：A kind of foamed aluminium material, this foamed aluminium material by aluminium alloy,
Foaming agent and additive are obtained under conditions of high temperature foaming and gradient cooling, and in parts by weight, described aluminium alloy is 94%～
98%th, foaming agent be 1%～5%, additive be 1%～4%.
Preferably, aluminium alloy of the present invention is almag or aluminium copper.
Preferably, foaming agent of the present invention is TiH2Powder.
Preferably, additive of the present invention is alumina powder.
Preferably, high temperature blowing temperature of the present invention is 600 DEG C～700 DEG C, and described gradient cooling is by arranging multistage
Water-cooled section cools down.
Another object of the present invention is to provide a kind of preparation method of foamed aluminium material, as follows including preparation process：
Step 1）, by aluminium alloy heat up make to be melted into liquid, disperseed using ultrasonic method, prepared melt；
Step 2）, add alumina powder being stirred continuously, increase melt viscosity；
Step 3）, add foaming agent TiH2Powder simultaneously stirs so as to uniformly, and foaming precursor material is obtained；
Step 4）, by step 3）Prepared foaming precursor material is transferred to thermal insulation foaming in foaming furnace, the bubble of prepared molten condition
Foam aluminum；
Step 5）, by step 4）The foamed aluminium material of prepared molten condition is transferred out of foaming furnace, and carries out gradient cooled and solidified.
Preferably, step 2）Described in melt viscosity be 28.7～32.4 η/mN m.
Preferably, step 4）Described in high temperature blowing temperature be 600 DEG C～700 DEG C, step 5）Described in gradient cooling logical
Cross the cooling of setting multistage water-cooled section.
Compared with prior art, the technological merit of the present invention is：1）The foamed aluminium material of the present invention has preferable resistance
Damping properties and damping performance；2）The method that the present invention is cooled down by gradient during preparing foamed aluminium, prepared foamed aluminum materials
Material has gradient-structure, further enhancing damping capacity and the damping performance of foamed aluminium material.
Specific embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1
1）Magnalium ZL301 is warming up to 650 DEG C to be made to be melted into liquid, is disperseed using ultrasonic method, is obtained molten
Body；
2）Add alumina powder to be simultaneously stirred continuously, increase melt viscosity, melt viscosity is 30.4 η/mN m, alumina powder plus
Enter amount for the 3% of magnalium ZL301 mass；
3）Add foaming agent TiH2Powder simultaneously stirs so as to uniformly, and foaming precursor material, TiH are obtained2The addition of powder is magnesium
Aluminium alloy ZL301 mass 2.4%；
4）By step 3）Prepared foaming precursor material is transferred to thermal insulation foaming in foaming furnace, and blowing temperature is 650 DEG C, is obtained molten
Melt the foamed aluminium material of state；
5）By step 4）The foamed aluminium material of prepared molten condition is transferred out of foaming furnace, and carries out gradient cooled and solidified.
Embodiment 2
1）Magnesium copper alloy ZL202 is warming up to 700 DEG C to be made to be melted into liquid, is disperseed using ultrasonic method, is obtained molten
Body；
2）Add alumina powder to be simultaneously stirred continuously, increase melt viscosity, melt viscosity is 32.4 η/mN m, alumina powder plus
Enter amount for the 4% of magnalium ZL202 mass；
3）Add foaming agent TiH2Powder simultaneously stirs so as to uniformly, and foaming precursor material, TiH are obtained2The addition of powder is magnesium
Aluminium alloy ZL202 mass 5%；
4）By step 3）Prepared foaming precursor material is transferred to thermal insulation foaming in foaming furnace, and blowing temperature is 700 DEG C, is obtained molten
Melt the foamed aluminium material of state；
5）By step 4）The foamed aluminium material of prepared molten condition is transferred out of foaming furnace, and carries out gradient cooled and solidified.
Embodiment 3
1）Magnesium copper alloy ZL302 is warming up to 600 DEG C to be made to be melted into liquid, is disperseed using ultrasonic method, is obtained molten
Body；
2）Add alumina powder to be simultaneously stirred continuously, increase melt viscosity, melt viscosity is 28.7 η/mN m, alumina powder plus
Enter amount for the 1% of magnalium ZL302 mass；
3）Add foaming agent TiH2Powder simultaneously stirs so as to uniformly, and foaming precursor material, TiH are obtained2The addition of powder is magnesium
Aluminium alloy ZL302 mass 1%；
4）By step 3）Prepared foaming precursor material is transferred to thermal insulation foaming in foaming furnace, and blowing temperature is 600 DEG C, is obtained molten
Melt the foamed aluminium material of state；
5）By step 4）The foamed aluminium material of prepared molten condition is transferred out of foaming furnace, and carries out gradient cooled and solidified.
Claims (9)
1. a kind of foamed aluminium material it is characterised in that：This foamed aluminium material is foamed in high temperature by aluminium alloy, foaming agent and additive
It is obtained with conditions of gradient cooling, in parts by weight, described aluminium alloy is that 94%～98%, foaming agent is 1%～5%, adds
Agent is 1%～4%.
2. a kind of foamed aluminium material according to claim 1 it is characterised in that：Described aluminium alloy is almag or aluminum bronze
Alloy.
3. a kind of foamed aluminium material according to claim 1 it is characterised in that：Described foaming agent is TiH2Powder.
4. a kind of foamed aluminium material according to claim 1 it is characterised in that：Described additive is alumina powder.
5. a kind of foamed aluminium material according to claim 1 it is characterised in that：Described high temperature blowing temperature be 600 DEG C～
700 DEG C, described gradient cooling is by arranging the cooling of multistage water-cooled section.
6. a kind of method preparing foamed aluminium material as claimed in claim 1 it is characterised in that：As follows including preparation process：
Step 1）, by aluminium alloy heat up make to be melted into liquid, disperseed using ultrasonic method, prepared melt；
Step 2）, add alumina powder being stirred continuously, increase melt viscosity；
Step 3）, add foaming agent TiH2Powder simultaneously stirs so as to uniformly, and foaming precursor material is obtained；
Step 4）, by step 3）Prepared foaming precursor material is transferred to thermal insulation foaming in foaming furnace, the bubble of prepared molten condition
Foam aluminum；
Step 5）, by step 4）The foamed aluminium material of prepared molten condition is transferred out of foaming furnace, and carries out gradient cooled and solidified.
7. according to claim 6 a kind of preparation method of foamed aluminium material it is characterised in that：Step 2）Described in melt stick
Spend for 28.7～32.4 η/mN m.
8. according to claim 6 a kind of preparation method of foamed aluminium material it is characterised in that：Step 4）Described in high temperature send out
Bubble temperature is 600 DEG C～700 DEG C, step 5）Described in gradient cooling by arrange multistage water-cooled section cooling.
9. according to claim 6 a kind of preparation method of foamed aluminium material it is characterised in that：In parts by weight, described
Aluminium alloy is 94%～98%, foaming agent is 1%～5%, additive is 1%～4%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610862090.4A CN106399740A (en) | 2016-09-29 | 2016-09-29 | Foamed aluminum material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610862090.4A CN106399740A (en) | 2016-09-29 | 2016-09-29 | Foamed aluminum material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106399740A true CN106399740A (en) | 2017-02-15 |
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| CN201610862090.4A Pending CN106399740A (en) | 2016-09-29 | 2016-09-29 | Foamed aluminum material and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106834819A (en) * | 2017-03-23 | 2017-06-13 | 吴明璋 | Silicate foam aluminium alloy and its preparation technology |
| CN112239819A (en) * | 2020-09-22 | 2021-01-19 | 东南大学 | Foam strength gradient design method based on aluminum-copper alloy |
| CN113667856A (en) * | 2021-08-10 | 2021-11-19 | 大连理工大学 | In-situ preparation method of continuous interpenetrating ordered/disordered porous composite material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55138039A (en) * | 1979-04-13 | 1980-10-28 | Agency Of Ind Science & Technol | Production of foamed aluminum |
| CN102373344A (en) * | 2010-08-13 | 2012-03-14 | 东北大学 | Preparation method and device of metal foam material |
| CN103898351A (en) * | 2014-04-11 | 2014-07-02 | 大连理工大学 | High-efficiency continuous casting method of structure-controllable closed cell foam aluminum ingot |
-
2016
- 2016-09-29 CN CN201610862090.4A patent/CN106399740A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55138039A (en) * | 1979-04-13 | 1980-10-28 | Agency Of Ind Science & Technol | Production of foamed aluminum |
| CN102373344A (en) * | 2010-08-13 | 2012-03-14 | 东北大学 | Preparation method and device of metal foam material |
| CN103898351A (en) * | 2014-04-11 | 2014-07-02 | 大连理工大学 | High-efficiency continuous casting method of structure-controllable closed cell foam aluminum ingot |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106834819A (en) * | 2017-03-23 | 2017-06-13 | 吴明璋 | Silicate foam aluminium alloy and its preparation technology |
| CN112239819A (en) * | 2020-09-22 | 2021-01-19 | 东南大学 | Foam strength gradient design method based on aluminum-copper alloy |
| CN112239819B (en) * | 2020-09-22 | 2021-09-07 | 东南大学 | Foam strength gradient design method based on aluminum-copper alloy |
| CN113667856A (en) * | 2021-08-10 | 2021-11-19 | 大连理工大学 | In-situ preparation method of continuous interpenetrating ordered/disordered porous composite material |
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| CB03 | Change of inventor or designer information |
Inventor after: Yu Yonghua Inventor after: Zhao Lei Inventor after: Song Defeng Inventor after: Zhang Yu Inventor after: Dai Yarong Inventor before: Yu Yonghua Inventor before: Zhao Lei Inventor before: Song Defeng Inventor before: Zhang Yu |
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Application publication date: 20170215 |
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| WD01 | Invention patent application deemed withdrawn after publication |