CN107988503A - A kind of positive pressure foaming preparation method of aperture controllable foam aluminium - Google Patents
A kind of positive pressure foaming preparation method of aperture controllable foam aluminium Download PDFInfo
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- CN107988503A CN107988503A CN201711135573.5A CN201711135573A CN107988503A CN 107988503 A CN107988503 A CN 107988503A CN 201711135573 A CN201711135573 A CN 201711135573A CN 107988503 A CN107988503 A CN 107988503A
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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
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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
- C22C1/083—Foaming process in molten metal other than by powder metallurgy
- C22C1/086—Gas foaming process
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- 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
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- 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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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Abstract
A kind of positive pressure foaming preparation method of aperture controllable foam aluminium, belongs to foam metal material preparing technical field；Preparation method：1) tackifier will be added after melting sources to viscosify molten aluminum；2) in foam chamber, foaming agent is added under steady temperature into molten aluminum, and makes its dispersed；3) it is after dispersed that foam chamber is closed and be passed through inert gas or nitrogen, foam chamber steady temperature and constant pressure are controlled, until foams reach maximum swelling height；4) keep foaming cavity pressure constant, after foams are cooled to solidification, discharge pressure, obtain foamed aluminium.Foamed aluminium prepared by the method for the present invention, average pore size scope is 0.7~2.7mm；It is high that the stress-strain diagram registration of foamed aluminium is made, and compressive strength is significantly higher than same density, congruent large aperture foamed aluminium.
Description
Technical field
The invention belongs to foam metal material preparing technical field, and in particular to a kind of positive pressure of aperture controllable foam aluminium
Brewed Preparation Method.
Background technology
Foamed aluminium is a kind of porous metal material using pure aluminum or aluminum alloy as matrix, is a kind of lightweight material of low-density
Material, and with silencing vibration-damping, energy-absorbing is explosion-proof and the multinomial characteristic such as electromagnetic shielding.The mechanical property of foamed aluminium depend on its matrix into
Point and foam structure, foamed aluminium aperture prepared by conventional method is 3~8mm, and skewness.Pore structure inequality causes foamed aluminium
Compressed platform intensity be far below theoretical expectation values, and there is obvious dispersiveness.Therefore, bubble is improved using new technology of preparing
Foam aluminium pore size and uniformity are to promote foamed aluminium to have product mechanical property stability in automobile making and national defense safety etc.
The necessary condition of high requirement field application.
The content of the invention
In view of the above problems, the present invention proposes a kind of positive pressure foaming preparation method of aperture controllable foam aluminium, this method is adopted
With the stability of positive foam reinforced foam, the bubble suppressed in foaming process merges, so as to prepare the controllable bubble in aperture
Foam aluminum, the material belong to small-bore and high evenness foamed aluminium material, which reduces pore structure defect to bubble
The adverse effect of foam aluminium compressive strength and its stability, improves the specific strength of foamed aluminium, and improves aluminum foam product mechanical property
The uniformity of energy.
The positive pressure foaming preparation method of the aperture controllable foam aluminium of the present invention, includes the following steps：
Step 1, molten aluminum viscosifies：
By after the aluminium based feedstock fusing for preparing foamed aluminium, add tackifier and molten aluminum is viscosified；
Step 2, foaming agent is added：
Molten aluminum is inserted in foam chamber, adds foaming agent at a constant temperature, and makes infusion dispersed in molten aluminum；
Step 3, positive foam：
It is rapidly that foam chamber is closed and be passed through inert gas or nitrogen after foaming agent is dispersed in molten aluminum, control
Foam chamber steady temperature, and constant pressure is 0.15~0.50MPa, until foams reach maximum swelling height；
Step 4, cooling with pressure：
Keep foaming cavity pressure constant, after foams are cooled to solidification, discharge pressure, obtain foamed aluminium.
The positive pressure foaming preparation method of above-mentioned aperture controllable foam aluminium, wherein：
In the step 1, aluminium based feedstock is technical pure aluminum or aluminum alloy.
In the step 1, the aluminium alloy is alusil alloy, mass percentage≤10wt.% of Si.
In the step 1, tackifier are calcium metal.
In the step 1, the dosage of tackifier is 2.0~3.0wt.% of material quality.
In the step 1, the method that tackifier are added into molten aluminum is：It is 720~760 DEG C to control temperature of aluminum liquid, will be increased
Stick is added into molten aluminum, by stirring, viscosifies molten aluminum；The mixing speed is 500~1000rad/min, during stirring
Between be 5~10min.
In the step 1, when tackifier are calcium metal, calcium metal viscosifies molten aluminum by stirring oxidation.
In the step 2, foaming agent is titantium hydride.
In the step 2, the quality for adding foaming agent is the 1.0~1.5% of material quality.
In the step 2, steady temperature is 660~700 DEG C.
In the step 2, the method for adding foaming agent is：Temperature of aluminum liquid is controlled at 660~700 DEG C, is added into molten aluminum
Enter foaming agent, mixing speed is 1000~3000rad/min, and mixing time is 3~6min, foaming agent is uniformly divided in molten aluminum
Dissipate.
In the step 3, inert gas is argon gas.
In the step 3, steady temperature is 660~700 DEG C.
In the step 3, when foams reach maximum swelling height, the corresponding expansion rate of foams is 290~450%.
In the step 4, it is that foams are air-cooled or cooled down with foam chamber to make the method that foams cool down.
In the step 4, the average pore size controlled range that foamed aluminium is made is 0.7~2.7mm.
In the step 4, it is high evenness foamed aluminium that foamed aluminium, which is made,.
In the step 4, the load-deformation curve registration of obtained foamed aluminium is very high, and compressive strength is significantly higher than together
Density, congruent large aperture foamed aluminium.
Preparation method of the present invention, by controlling foaming cavity pressure that the foamed aluminium of required foam structure can be made.
The technical solution Integral Thought of positive pressure foaming preparation method of the aperture controllable foam aluminium of the present invention is：Sent out adding
Normal pressure is formed in closed foam chamber after infusion, the humidification by normal pressure to liquid foam stability, reduces gas
The compressive yield strength thickness of liquid film between bubble, suppresses bubble and merges, so as to reach the mesh for obtaining high evenness small pore diameter foamed aluminium
's.
The positive pressure foaming preparation method of the aperture controllable foam aluminium of the present invention, compared with the prior art, its advantage is as follows：
(1) can be to foamed aluminium aperture and uniformity active control
Inhibitory action using environmental pressure to bubble wall rupture, and single isolated bubbles volume are under pressure and increase and press
Contracting, can obtain the foamed aluminium that average pore size is 0.7~2.7mm, and after being characterized to sample pore-size distribution, can substantially observe
Increase to pressure, pore size distribution range narrows.
(2) foam stability enhancing, technique are more stable
It is high energy system, after foams reach maximum swelling rate since liquid foam has very big specific surface area
Easily grow up and cave in or aging is caved in, i.e., liquid foam is collapsed.At a positive pressure, foaming agent decomposes slack-off, foam
Body stability strengthens, and can keep not collapsing for a long time after reaching maximum swelling height, strengthens operating process controllability.
(3) reduce foamed aluminium gravity direction density gradient, improve lumber recovery
Molten aluminum in foam thinks lower flowing under the effect of gravity, along Plateau borders, causes gravity direction to exist obvious
Density gradient.And it is square proportional due to gravity drainage speed and aperture, it can significantly reduce gravity row after reducing bubble aperture
Liquid, so as to lift the lumber recovery of product.
(4) foam Interior fault of construction is reduced
Since foams thermal conductivity factor is far below solid metal, exterior quick cooling in cooling procedure, and inside needs
It could cool down for a long time, easily the obvious fault of construction caused by internal foaming agent continues decomposition or foams contraction etc..Using
Technique shown in the present invention, foaming agent decompose completely, and bubble merging is subject to strong inhibition, can significantly subtract in cooling procedure
The generation of few fault of construction.
(5) foamed aluminium mechanical property and its reappearance are significantly improved
A significant drawback of the foam metal when being applied as lightweight structural material is made by the inhomogeneities of pore structure
Into mechanical property it is significantly dispersed.Single pore structure defect is reduced using small pore diameter foamed aluminium made from present invention process
Influence to overall mechanical properties, is compressed performance test, its load-deformation curve registration is very from same sample sampling
Height, and compressive strength is significantly higher than same density, congruent large aperture foamed aluminium.
Brief description of the drawings
Fig. 1 present examples 1 are shone using foamed aluminium sample obtained by the positive pressure foaming preparation method of aperture controllable foam aluminium
Piece；
Fig. 2 present examples 2 are shone using foamed aluminium sample obtained by the positive pressure foaming preparation method of aperture controllable foam aluminium
Piece；
Fig. 3 present examples 3 are shone using foamed aluminium sample obtained by the positive pressure foaming preparation method of aperture controllable foam aluminium
Piece；
Fig. 4 present examples 2 are using foamed aluminium sample obtained by the positive pressure foaming preparation method of aperture controllable foam aluminium
Compression stress strain curve；
Fig. 5 present examples 3 are using foamed aluminium sample obtained by the positive pressure foaming preparation method of aperture controllable foam aluminium
Compression stress strain curve.
Embodiment
Embodiment 1
A kind of positive pressure foaming preparation method of aperture controllable foam aluminium, includes the following steps：
Step 1, molten aluminum viscosifies：
The raw material 800g alusil alloys of foamed aluminium will be prepared, be put into the cylindrical steel crucibles of a diameter of 90mm, by earthenware
Crucible is placed in crucible furnace, and after being heated to aluminum feedstock fusing, it is 720 DEG C to control temperature of aluminum liquid, and tackifier Ca is added into molten aluminum,
Molten aluminum is viscosified by stirring；Wherein, the mass percentage of Si is 7wt.% in the alusil alloy, the use of tackifier Ca
Measure the 3.0wt.% for material quality, mixing speed 500rad/min, mixing time 5min；
Step 2, foaming agent is added：
Stop stirring, molten aluminum is transferred in sealable stainless steel foam chamber, by external electrical stove heat, will be foamed
Cavity temperature control adds titantium hydride under 660 DEG C, stirring condition, and lasting stirring makes it dispersed in molten aluminum；Wherein, hydrogen
The quality for changing titanium is 1.0%, mixing speed 2500rad/min of material quality, and it is 3min to continue mixing time；
Step 3, positive foam：
After foaming agent is dispersed in molten aluminum, stops stirring, take out agitating paddle immediately, and it is rapidly that foam chamber is closed
And it is passed through N2Gas, it is 660 DEG C to control foam chamber steady temperature, and constant pressure is 0.15MPa, thermal insulation foaming, foam after 11min
Body reaches maximum swelling height, continues insulating foam body height and significant change no longer occurs；
Step 4, cooling with pressure：
Closed foam chamber is taken out out of stove, keeps foaming cavity pressure constant, foams is cooled to foam chamber solidifying
Gu after, pressure is discharged, obtains foamed aluminium.
In the preparation method of this implementation, in the step 3, when foams reach maximum swelling height, the maximum of foams
Expansion height is 180mm, and corresponding expansion rate is 450%, and it is 0.36gcm to measure foam density-3, the present embodiment prepares foam
The average pore size of aluminium is 2.62mm, as shown in Figure 1, the foamed aluminium is the uniform foamed aluminium of aperture height as seen from the figure；From sample
On using wire cutting machine tool cut three a diameter of 30mm, a height of 30mm Cylindrical Samples carry out quasistatic compression experiment, obtain
The stress-strain diagram obtained, the stress-strain diagram repeatability of three samples are preferable.
Embodiment 2
A kind of positive pressure foaming preparation method of aperture controllable foam aluminium, includes the following steps：
Step 1, molten aluminum viscosifies：
The raw material 800g commercial-purity aluminiums of foamed aluminium will be prepared, be put into the cylindrical steel crucibles of a diameter of 90mm, by earthenware
Crucible is placed in crucible furnace, and after being heated to aluminum feedstock fusing, it is 740 DEG C to control temperature of aluminum liquid, and tackifier Ca is added into molten aluminum,
Molten aluminum is viscosified by stirring；Wherein, the dosage of the tackifier Ca is the 2.5wt.% of material quality, and mixing speed is
800rad/min, mixing time 8min；
Step 2, foaming agent is added：
Stop stirring, molten aluminum is transferred in sealable stainless steel foam chamber, by external electrical stove heat, will be foamed
Cavity temperature control adds titantium hydride under 680 DEG C, stirring condition, and lasting stirring makes it dispersed in molten aluminum；Wherein, hydrogen
The quality for changing titanium is 1.3%, mixing speed 2000rad/min of material quality, and it is 4min to continue mixing time；
Step 3, positive foam：
After foaming agent is dispersed in molten aluminum, stops stirring, take out agitating paddle immediately, and it is rapidly that foam chamber is closed
And argon gas is passed through, it is 680 DEG C to control foam chamber steady temperature, and constant pressure is 0.28MPa, thermal insulation foaming, foam after 15min
Body reaches maximum swelling height, continues insulating foam body height and significant change no longer occurs；
Step 4, cooling with pressure：
Closed foam chamber is taken out out of stove, keeps foaming cavity pressure constant, foams is cooled to foam chamber solidifying
Gu after, pressure is discharged, obtains foamed aluminium.
In the preparation method of this implementation, in the step 3, when foams reach maximum swelling height, the maximum of foams
Expansion height is 142mm, and corresponding expansion rate is 355%, and it is 0.58gcm to measure foam density-3, the present embodiment prepares foam
The average pore size of aluminium is 1.1mm, as shown in Fig. 2, the foamed aluminium is the uniform foamed aluminium of aperture height as seen from the figure；From sample
The Cylindrical Samples 1,2 and 3 of three a diameter of 30mm, a height of 30mm are cut using wire cutting machine tool, carry out quasistatic compression examination
Test, the stress-strain diagram of acquisition is as shown in figure 4, as seen from the figure, the stress-strain diagram repeatability of three samples is preferable.
Embodiment 3
A kind of positive pressure foaming preparation method of aperture controllable foam aluminium, includes the following steps：
Step 1, molten aluminum viscosifies：
The raw material 800g commercial-purity aluminiums of foamed aluminium will be prepared, be put into the cylindrical steel crucibles of a diameter of 90mm, by earthenware
Crucible is placed in crucible furnace, and after being heated to aluminum feedstock fusing, it is 760 DEG C to control temperature of aluminum liquid, and tackifier Ca is added into molten aluminum,
Molten aluminum is viscosified by stirring；Wherein, the dosage of the tackifier Ca is the 2.0wt.% of material quality, and mixing speed is
1000rad/min, mixing time 10min；
Step 2, foaming agent is added：
Stop stirring, molten aluminum is transferred in sealable stainless steel foam chamber, by external electrical stove heat, will be foamed
Cavity temperature control adds titantium hydride under 700 DEG C, stirring condition, and lasting stirring makes it dispersed in molten aluminum；Wherein, hydrogen
The quality for changing titanium is 1.5%, mixing speed 3000rad/min of material quality, and it is 6min to continue mixing time；
Step 3, positive foam：
After foaming agent is dispersed in molten aluminum, stops stirring, take out agitating paddle immediately, and it is rapidly that foam chamber is closed
And argon gas is passed through, it is 700 DEG C to control foam chamber steady temperature, and constant pressure is 0.5MPa, thermal insulation foaming, foam after 19min
Body reaches maximum swelling height, continues insulating foam body height and significant change no longer occurs；
Step 4, cooling with pressure：
Closed foam chamber is taken out out of stove, keeps foaming cavity pressure constant, foams is cooled to foam chamber solidifying
Gu after, pressure is discharged, obtains foamed aluminium.
In the preparation method of this implementation, in the step 3, when foams reach maximum swelling height, the maximum of foams
Expansion height is 116mm, and corresponding expansion rate is 290%, and it is 0.79gcm to measure foam density-3, the present embodiment prepares foam
The average pore size of aluminium is 0.72mm, as shown in figure 3, the foamed aluminium is the uniform foamed aluminium of aperture height as seen from the figure；From sample
On the Cylindrical Samples 1,2 and 3 of three a diameter of 30mm, a height of 30mm are cut using wire cutting machine tool, carry out quasistatic compression
Experiment, the stress-strain diagram of acquisition is as shown in figure 5, as seen from the figure, the stress-strain diagram repeatability of three samples is preferable.
Embodiment 4
A kind of positive pressure foaming preparation method of aperture controllable foam aluminium, includes the following steps：
Step 1, molten aluminum viscosifies：
The raw material 800g alusil alloys of foamed aluminium will be prepared, be put into the cylindrical steel crucibles of a diameter of 90mm, by earthenware
Crucible is placed in crucible furnace, and after being heated to aluminum feedstock fusing, it is 720 DEG C to control temperature of aluminum liquid, and tackifier Ca is added into molten aluminum,
Molten aluminum is viscosified by stirring；Wherein, the mass percentage of Si is 3wt.% in the alusil alloy, the tackifier
The dosage of Ca is the 2.2wt.%, mixing speed 800rad/min, mixing time 7min of material quality；
Step 2, foaming agent is added：
Stop stirring, molten aluminum is transferred in sealable stainless steel foam chamber, by external electrical stove heat, will be foamed
Cavity temperature control adds titantium hydride under 670 DEG C, stirring condition, and lasting stirring makes it dispersed in molten aluminum；Wherein, hydrogen
The quality for changing titanium is 1.1%, mixing speed 1500rad/min of material quality, and it is 5min to continue mixing time；
Step 3, positive foam：
After foaming agent is dispersed in molten aluminum, stops stirring, take out agitating paddle immediately, and it is rapidly that foam chamber is closed
And nitrogen is passed through, it is 670 DEG C to control foam chamber steady temperature, and constant pressure is 0.20MPa, thermal insulation foaming, foam after 13min
Body reaches maximum swelling height, continues insulating foam body height and significant change no longer occurs；
Step 4, cooling with pressure：
Closed foam chamber is taken out out of stove, keeps foaming cavity pressure constant, foams is cooled to foam chamber solidifying
Gu after, pressure is discharged, obtains foamed aluminium.
In the preparation method of this implementation, in the step 3, when foams reach maximum swelling height, the maximum of foams
Expansion height is 160mm, and corresponding expansion rate is 400%, and it is 0.42gcm to measure foam density-3, the present embodiment prepares foam
The average pore size of aluminium is 1.63mm, which is the uniform foamed aluminium of aperture height；Cut from sample using wire cutting machine tool
Take three a diameter of 30mm, a height of 30mm Cylindrical Samples carry out quasistatic compression experiment, the stress-strain diagram of acquisition, three
The stress-strain diagram repeatability of a sample is preferable.
Embodiment 5
A kind of positive pressure foaming preparation method of aperture controllable foam aluminium, includes the following steps：
Step 1, molten aluminum viscosifies：
The raw material 800g alusil alloys of foamed aluminium will be prepared, be put into the cylindrical steel crucibles of a diameter of 90mm, by earthenware
Crucible is placed in crucible furnace, and after being heated to aluminum feedstock fusing, it is 730 DEG C to control temperature of aluminum liquid, and tackifier Ca is added into molten aluminum,
Molten aluminum is viscosified by stirring；Wherein, the mass percentage of Si is 10wt.% in the alusil alloy, the thickening
The dosage of agent Ca is the 2.2wt.%, mixing speed 900rad/min, mixing time 5min of material quality；
Step 2, foaming agent is added：
Stop stirring, molten aluminum is transferred in sealable stainless steel foam chamber, by external electrical stove heat, will be foamed
Cavity temperature control adds titantium hydride under 660 DEG C, stirring condition, and lasting stirring makes it dispersed in molten aluminum；Wherein, hydrogen
The quality for changing titanium is 1.5%, mixing speed 2800rad/min of material quality, and it is 3min to continue mixing time；
Step 3, positive foam：
After foaming agent is dispersed in molten aluminum, stops stirring, take out agitating paddle immediately, and it is rapidly that foam chamber is closed
And nitrogen is passed through, it is 660 DEG C to control foam chamber steady temperature, and constant pressure is 0.36MPa, thermal insulation foaming, foam after 16min
Body reaches maximum swelling height, continues insulating foam body height and significant change no longer occurs；
Step 4, cooling with pressure：
Closed foam chamber is taken out out of stove, keeps foaming cavity pressure constant, foams is cooled to foam chamber solidifying
Gu after, pressure is discharged, obtains foamed aluminium.
In the preparation method of this implementation, in the step 3, when foams reach maximum swelling height, the maximum of foams
Expansion height is 130mm, and corresponding expansion rate is 325%, and it is 0.64gcm to measure foam density-3, the present embodiment prepares foam
The average pore size of aluminium is 1.0mm, which is the uniform foamed aluminium of aperture height；Cut from sample using wire cutting machine tool
The Cylindrical Samples progress quasistatic compression experiment of three a diameter of 30mm, a height of 30mm, the stress-strain diagram of acquisition, three
The stress-strain diagram repeatability of sample is preferable.
Claims (10)
1. a kind of positive pressure foaming preparation method of aperture controllable foam aluminium, it is characterised in that include the following steps：
Step 1, molten aluminum viscosifies：
By after the aluminium based feedstock fusing for preparing foamed aluminium, add tackifier and molten aluminum is viscosified；
Step 2, foaming agent is added：
Molten aluminum is inserted in foam chamber, adds foaming agent at a constant temperature, and makes infusion dispersed in molten aluminum；
Step 3, positive foam：
It is rapidly that foam chamber is closed and be passed through inert gas or nitrogen after foaming agent is dispersed in molten aluminum, control foaming
Chamber steady temperature, and constant pressure is 0.15~0.50MPa, until foams reach maximum swelling height；
Step 4, cooling with pressure：
Keep foaming cavity pressure constant, after foams are cooled to solidification, discharge pressure, obtain foamed aluminium.
2. the positive pressure foaming preparation method of controllable foam aluminium in aperture according to claim 1, it is characterised in that the step
In 1, tackifier are calcium metal, and the dosage of tackifier is 2.0~3.0wt.% of material quality.
3. the positive pressure foaming preparation method of controllable foam aluminium in aperture according to claim 1, it is characterised in that the step
In 1, the method that tackifier are added into molten aluminum is：Into molten aluminum, the method for addition tackifier is：Control temperature of aluminum liquid for 720~
760 DEG C, tackifier are added into molten aluminum, by stirring, viscosify molten aluminum；The mixing speed is 500~1000rad/
Min, mixing time are 5~10min.
4. the positive pressure foaming preparation method of controllable foam aluminium in aperture according to claim 1, it is characterised in that the step
In 2, foaming agent is titantium hydride, and the quality for adding foaming agent is the 1.0~1.5% of material quality.
5. the positive pressure foaming preparation method of controllable foam aluminium in aperture according to claim 1, it is characterised in that the step
In 2, steady temperature is 660~700 DEG C；In the step 3, steady temperature is 660~700 DEG C.
6. the positive pressure foaming preparation method of controllable foam aluminium in aperture according to claim 1, it is characterised in that the step
In 2, the method for adding foaming agent is：Temperature of aluminum liquid is controlled at 660~700 DEG C, foaming agent, mixing speed are added into molten aluminum
For 1000~3000rad/min, mixing time is 3~6min, makes foaming agent dispersed in molten aluminum.
7. the positive pressure foaming preparation method of controllable foam aluminium in aperture according to claim 1, it is characterised in that the step
In 3, when foams reach maximum swelling height, the corresponding expansion rate of foams is 290~450%.
8. the positive pressure foaming preparation method of controllable foam aluminium in aperture according to claim 1, it is characterised in that the step
In 4, the average pore size scope that foamed aluminium is made is 0.7~2.7mm.
9. the positive pressure foaming preparation method of controllable foam aluminium in aperture according to claim 1, it is characterised in that the step
In 4, the load-deformation curve registration height of foamed aluminium is made, and compressive strength is significantly higher than same density, congruent large aperture
Foamed aluminium.
10. the positive pressure foaming preparation method of controllable foam aluminium in aperture according to claim 1, it is characterised in that the system
Preparation Method is by controlling foaming cavity pressure that the foamed aluminium of required foam structure is made.
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Cited By (5)
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| CN108842080A (en) * | 2018-09-11 | 2018-11-20 | 东北大学 | A kind of preparation method of uniform foam cell foamed aluminium material |
| CN109022875A (en) * | 2018-09-11 | 2018-12-18 | 东北大学 | A kind of preparation method of high temperature resistant foamed aluminium material |
| CN110093527A (en) * | 2019-04-23 | 2019-08-06 | 东北大学 | A kind of preparation method of high intensity polyhedron shape pore structure closed-cell aluminum foam |
| CN113305282A (en) * | 2021-04-27 | 2021-08-27 | 山东高速高新材料科技有限公司 | Foamed aluminum production process based on electrified production equipment |
| CN114214537A (en) * | 2021-11-30 | 2022-03-22 | 东北大学 | Closed-cell foamed aluminum with high energy absorption and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108842080A (en) * | 2018-09-11 | 2018-11-20 | 东北大学 | A kind of preparation method of uniform foam cell foamed aluminium material |
| CN109022875A (en) * | 2018-09-11 | 2018-12-18 | 东北大学 | A kind of preparation method of high temperature resistant foamed aluminium material |
| CN110093527A (en) * | 2019-04-23 | 2019-08-06 | 东北大学 | A kind of preparation method of high intensity polyhedron shape pore structure closed-cell aluminum foam |
| CN110093527B (en) * | 2019-04-23 | 2021-03-02 | 东北大学 | Preparation method of high-strength closed-cell foamed aluminum with polyhedral cell structure |
| CN113305282A (en) * | 2021-04-27 | 2021-08-27 | 山东高速高新材料科技有限公司 | Foamed aluminum production process based on electrified production equipment |
| CN114214537A (en) * | 2021-11-30 | 2022-03-22 | 东北大学 | Closed-cell foamed aluminum with high energy absorption and preparation method thereof |
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Application publication date: 20180504 |