CN109468482A - A kind of high intensity foam aluminium plate preparation method - Google Patents
A kind of high intensity foam aluminium plate preparation method Download PDFInfo
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- CN109468482A CN109468482A CN201811546569.2A CN201811546569A CN109468482A CN 109468482 A CN109468482 A CN 109468482A CN 201811546569 A CN201811546569 A CN 201811546569A CN 109468482 A CN109468482 A CN 109468482A
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- hollow sphere
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- aluminium
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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
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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
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
- C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
- C22C32/0036—Matrix based on Al, Mg, Be or alloys thereof
Abstract
The invention discloses a kind of high-intensitive foamed aluminium board preparation methods: comprise the following steps: raw material includes aluminium ingot, hollow sphere and tackifier, molten aluminum, hollow sphere, tackifier three weight ratio be 58~62:19~21:1~2.5；Aluminium ingot is put into aluminium melting furnace and is fused into molten aluminum, melt temperature is 780~800 DEG C；It is spare that hollow sphere is put into heating and thermal insulation in heating furnace, temperature setting is 650~670 DEG C；The molten aluminum is poured into agitator and is stirred, 750~850r/min of mixing speed, while carrying out temperature control；Tackifier are added when being reduced to 680 DEG C in temperature, are kept stirring speed 800r/min；Hollow sphere is added when temperature control is to 660 DEG C, mixing speed is promoted in 10 seconds to 1000r/min；Stirring state is observed, uniformly rear stopping stirring to be mixed carries out air-cooled cooling；It is cut after cooling and shaping, obtains high-intensitive foamed aluminium board.
Description
Technical field
The present invention relates to foamed aluminium processing technique fields, more particularly to a kind of foam aluminium plate preparation side of high intensity
Method.
Background technique
Foamed aluminium is a kind of novel porous metal material, has light, easy processing, easy to install, forming accuracy high and can
The features such as carrying out external coating, high temperature resistant, fire protecting performance, anticorrosive and weatherability are strong, high-selenium corn impact capacity and electromagnetic shielding
Property it is high, can sound insulation and noise reduction, thermal conductivity it is low and to have filter capacity be also its performance.
Foamed aluminium mainly is prepared using foam melt method in existing market, density is about in 0.25~0.6g/cm3Between,
Compression strength can satisfy the use in most of field in 2~8MPa.But in military and some special dimensions, the performance indicator
Requirement is also much not achieved in data, such as the application environment of rocket launching pedestal requires foamed aluminium compression strength in 50MPa
More than.It is capable of the mechanical property of a degree of promotion foamed aluminium using infiltration casting production foamed aluminium, but in similar casting
Method in can not add tackifier so that being also easy to produce large area still defect during cooling and shaping.When using hollow sphere
Technique also will appear hollow sphere when producing foam aluminium plate and be unevenly distributed, and sound insulation and noise reduction performance is caused to decline.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of preparation method of high-intensitive foamed aluminium board, foamed aluminium material holes
More uniform, sound insulation and noise reduction performance is issued in hole, meets use condition of the material in the higher field of intensity requirement, compression strength
Up to 50MPa.
It is a kind of high intensity foamed aluminium board preparation method the technical solution adopted is that: comprise the following steps:
Step A: raw material preparation, raw material include aluminium ingot, hollow sphere and tackifier, molten aluminum, hollow sphere, tackifier three weight
Amount is than being 58~62:19~21:1~2.5；
Step B: aluminium ingot is put into aluminium melting furnace and is fused into molten aluminum by molten aluminum melting, and melt temperature is 780~800 DEG C；
Step C: it is spare to be put into heating and thermal insulation in heating furnace by heating hollow sphere for hollow sphere, and temperature setting is 650~
670℃；
Step D: the molten aluminum is poured into agitator and is stirred by agitating procedure, 750~850r/min of mixing speed, simultaneously
Carry out temperature control；
Step E: thickening process, temperature are added tackifier when being reduced to 680 DEG C, are kept stirring speed 800r/min；
Step F: hollow sphere is added when temperature control is to 660 DEG C in foamed process, and mixing speed is promoted in 10 seconds to 1000r/min；
Step G: cooling process observes stirring state, and uniformly rear stopping stirring to be mixed is cooled down, and the type of cooling is taken
Single is air-cooled, is not available for water cooling, and chilling is avoided to cause crackle；
Step H: cutting is cut after cooling and shaping, obtains high-intensitive foamed aluminium board.
In a kind of preferred embodiment of preparation method provided by the invention, molten aluminum, hollow sphere, tackifier three weight
Than for 60:20:1.5.
Further, the hollow sphere is hollow alumina ball, 0.2~8mm of alumina hollow ball diameter.
In a kind of preferred embodiment of preparation method provided by the invention, the tackifier are calcium grain.
In a kind of preferred embodiment of preparation method provided by the invention, the heat preservation temperature of the step C heating hollow sphere
Degree is set as 660 DEG C.
In a kind of preferred embodiment of preparation method provided by the invention, the mixing speed of molten aluminum is in the step D
800r/min。
In a kind of preferred embodiment of preparation method provided by the invention, it is fine aluminium ingot that the aluminium ingot, which chooses 1,.
Processing method of the invention, which has been abandoned in conventional melt Fabrication of Foamed Aluminum by Foaming Technique, utilizes titantium hydride to be thermally decomposed
Foam forms, nontoxic, safety coefficient is higher, avoid titantium hydride foaming it is difficult to control, investment loss late height and put into it is improper
The security risk for causing molten aluminum to splash.As bubble there are in foam aluminium plate, its own is also acted as simultaneous oxidation aluminium ball
The support construction of steep that wall enhances the intensity of material entirety.Using tackifier and by molten aluminum, hollow sphere, tackifier three weight
Amount is 58~62:19~21:1~2.5 than control, can significantly improve the uniformity coefficient of foamed aluminium hole.
Detailed description of the invention
Fig. 1 be hollow ball shape at crafters schematic diagram.
Figure label indicates: 1- hollow alumina ball inner wall or cast iron hollow sphere inner wall, 2- hole inner wall
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
It is a kind of high intensity foamed aluminium board preparation method use following steps:
Step A: raw material preparation, raw material include aluminium ingot, hollow sphere and tackifier.It is fine aluminium ingot, increasing that preferred aluminium ingot, which chooses 1,
Stick is calcium grain, hollow sphere is hollow alumina ball, 0.2~8mm of alumina hollow ball diameter.It can also be hollow using cast iron
Ball, molten aluminum, hollow sphere, tackifier three weight ratio be 58~62:19~21:1~2.5, preferred weight ratio be 60:20:
1.5。
Step B: aluminium ingot is put into aluminium melting furnace and is fused into molten aluminum by molten aluminum melting, and melt temperature is 780~800 DEG C；
Step C: it is spare to be put into heating and thermal insulation in heating furnace by heating hollow sphere for hollow sphere, and temperature setting is 650~
670 DEG C, preferred temperature is 660 DEG C.
Step D: the molten aluminum is poured into agitator and is stirred by agitating procedure, 750~850r/min of mixing speed, preferably
Revolving speed be 800r/min.Temperature control is carried out simultaneously.
Step E: thickening process, temperature are added tackifier when being reduced to 680 DEG C, are kept stirring speed 800r/min；
Step F: hollow sphere is added when temperature control is to 660 DEG C in foamed process, and mixing speed is promoted in 10 seconds to 1000r/min；
Step G: cooling process observes stirring state, and uniformly rear stopping stirring to be mixed is cooled down, and the type of cooling is taken
Single is air-cooled, is not available for water cooling, and chilling is avoided to cause crackle；
Step H: cutting is cut after cooling and shaping, obtains high-intensitive foamed aluminium board.
Fig. 1 show for hollow ball shape at crafters schematic diagram.Wherein, label 1 show hollow alumina ball inner wall
Or cast iron hollow sphere inner wall, label 2 show hole inner wall.
For the performance of further description foamed aluminium material prepared by the present invention, this has been carried out experimental data compare into
Row characterization.
Comparative example 1
The foamed aluminium of preparation, is cut into the square of 50*50*50mm by the foamed aluminium prepared using conventional melt foaming, is claimed
Its density selects the pressure testing machine of 300KN, provides to carry out pressure resistance according to JG/T 359-2012 " foamed aluminium board for building "
Degree test.
Comparative example 2
Aluminium ingot choose 1 be fine aluminium ingot, tackifier be calcium grain, hollow sphere is diameter 3mm hollow alumina ball, molten aluminum, hollow
Ball, tackifier three weight ratio be 60:20:0；Aluminium ingot is put into aluminium melting furnace and is fused into molten aluminum, melt temperature 780
℃；Hollow sphere is put into heating furnace to be heated to 650 DEG C of heat preservations spare；Molten aluminum is poured into agitator and is stirred with 750r/min
It mixes, while carrying out temperature control；Tackifier are added when being reduced to 680 DEG C in temperature, are kept stirring speed 800r/min；Temperature control is to 660 DEG C
When hollow sphere is added, mixing speed is promoted in 10 seconds to 1000r/min；Observe stirring state, uniformly rear stopping stirring to be mixed
Carry out air-cooled cooling；It is cut after cooling and shaping, obtains foamed aluminium board.
Comparative example 3
Aluminium ingot choose 1 be fine aluminium ingot, tackifier be calcium grain, hollow sphere is diameter 0.2mm hollow alumina ball, molten aluminum, sky
Bulbus cordis, tackifier three weight ratio be 57:16:0.5；Aluminium ingot is put into aluminium melting furnace and is fused into molten aluminum at 800 DEG C；It will be hollow
Ball is put into heating furnace that be heated to 660 DEG C of heat preservations spare；Molten aluminum is poured into agitator and is stirred with 800r/min, while being controlled
Temperature；Tackifier are added when dropping to 680 DEG C in temperature, are kept stirring speed 800r/min；It is added hollow sphere when temperature control is to 660 DEG C, 10
Mixing speed is promoted in second to 1000r/min；Stirring state is observed, uniformly rear stopping stirring to be mixed carries out air-cooled cooling；It is cold
But it is cut after forming, obtains foamed aluminium board.
Comparative example 4
Aluminium ingot choose 1 be fine aluminium ingot, tackifier be calcium grain, hollow sphere is diameter 8mm hollow alumina ball, molten aluminum, hollow
Ball, tackifier three weight ratio be 63:22:3；Aluminium ingot is put into aluminium melting furnace and is fused into molten aluminum, melt temperature 800
℃；Hollow sphere is put into heating furnace to be heated to 660 DEG C of heat preservations spare；Molten aluminum is poured into agitator and is stirred with 800r/min
It mixes, while carrying out temperature control；Tackifier are added when being reduced to 680 DEG C in temperature, are kept stirring speed 800r/min；Temperature control is to 660 DEG C
When hollow sphere is added, mixing speed is promoted in 10 seconds to 1000r/min；Observe stirring state, uniformly rear stopping stirring to be mixed
Carry out air-cooled cooling；It is cut after cooling and shaping, obtains high-intensitive foamed aluminium board.
Embodiment 1
Aluminium ingot choose 1 be fine aluminium ingot, tackifier be calcium grain, hollow sphere is diameter 3mm hollow alumina ball, molten aluminum, hollow
Ball, tackifier three weight ratio be 58:19:2.5；Aluminium ingot is put into aluminium melting furnace and is fused into molten aluminum, melt temperature 780
℃；Hollow sphere is put into heating furnace to be heated to 650 DEG C of heat preservations spare；Molten aluminum is poured into agitator and is stirred with 750r/min
It mixes, while carrying out temperature control；Tackifier are added when being reduced to 680 DEG C in temperature, are kept stirring speed 800r/min；Temperature control is to 660 DEG C
When hollow sphere is added, mixing speed is promoted in 10 seconds to 1000r/min；Observe stirring state, uniformly rear stopping stirring to be mixed
Carry out air-cooled cooling；It is cut after cooling and shaping, obtains high-intensitive foamed aluminium board.
Embodiment 2
Aluminium ingot choose 1 be fine aluminium ingot, tackifier be calcium grain, hollow sphere is diameter 0.2mm hollow alumina ball, molten aluminum, sky
Bulbus cordis, tackifier three weight ratio be 60:20:1.5；Aluminium ingot is put into aluminium melting furnace and is fused into molten aluminum, melt temperature is
800℃；Hollow sphere is put into heating furnace to be heated to 660 DEG C of heat preservations spare；Molten aluminum is poured into agitator with 800r/min
Stirring, while carrying out temperature control；Tackifier are added when being reduced to 680 DEG C in temperature, are kept stirring speed 800r/min；Temperature control is to 660
DEG C when hollow sphere is added, mixing speed is promoted in 10 seconds to 1000r/min；Stirring state is observed, uniformly rear stopping to be mixed being stirred
It mixes and carries out air-cooled cooling；It is cut after cooling and shaping, obtains high-intensitive foamed aluminium board.
Embodiment 3
Aluminium ingot choose 1 be fine aluminium ingot, tackifier be calcium grain, hollow sphere is diameter 8mm hollow alumina ball, molten aluminum, hollow
Ball, tackifier three weight ratio be 61:20:2；Aluminium ingot is put into aluminium melting furnace and is fused into molten aluminum, melt temperature 800
℃；Hollow sphere is put into heating furnace to be heated to 660 DEG C of heat preservations spare；Molten aluminum is poured into agitator and is stirred with 800r/min
It mixes, while carrying out temperature control；Tackifier are added when being reduced to 680 DEG C in temperature, are kept stirring speed 800r/min；Temperature control is to 660 DEG C
When hollow sphere is added, mixing speed is promoted in 10 seconds to 1000r/min；Observe stirring state, uniformly rear stopping stirring to be mixed
Carry out air-cooled cooling；It is cut after cooling and shaping, obtains high-intensitive foamed aluminium board.
Embodiment 4
Aluminium ingot choose 1 be fine aluminium ingot, tackifier be calcium grain, hollow sphere is diameter 8mm hollow alumina ball, molten aluminum, hollow
Ball, tackifier three weight ratio be 62:21:2；Aluminium ingot is put into aluminium melting furnace and is fused into molten aluminum, melt temperature 800
℃；Hollow sphere is put into heating furnace to be heated to 660 DEG C of heat preservations spare；Molten aluminum is poured into agitator and is stirred with 800r/min
It mixes, while carrying out temperature control；Tackifier are added when being reduced to 680 DEG C in temperature, are kept stirring speed 800r/min；Temperature control is to 660 DEG C
When hollow sphere is added, mixing speed is promoted in 10 seconds to 1000r/min；Observe stirring state, uniformly rear stopping stirring to be mixed
Carry out air-cooled cooling；It is cut after cooling and shaping, obtains high-intensitive foamed aluminium board.
Comparative example and embodiment data are shown in Table 1, while having carried out quantitative control to the addition of tackifier in experiment preparation,
Influence of the observation analysis Different adding amount to the hole uniformity, compression strength and acoustic absorptivity of foamed aluminium.
1 molten aluminum of table: hollow sphere: influence of the tackifier weight ratio to performance
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (7)
1. a kind of preparation method of high intensity foamed aluminium board, which is characterized in that comprise the following steps:
Step A: raw material preparation, raw material include aluminium ingot, hollow sphere and tackifier, molten aluminum, hollow sphere, tackifier three weight ratio
For 58~62:19~21:1~2.5；
Step B: aluminium ingot is put into aluminium melting furnace and is fused into molten aluminum by molten aluminum melting, and melt temperature is 780~800 DEG C；
Step C: it is spare to be put into heating and thermal insulation in heating furnace by heating hollow sphere for hollow sphere, and temperature setting is 650~670 DEG C；
Step D: the molten aluminum is poured into agitator and is stirred by agitating procedure, and 750~850r/min of mixing speed is carried out simultaneously
Temperature control；
Step E: thickening process, temperature are added tackifier when being reduced to 680 DEG C, are kept stirring speed 800r/min；
Step F: hollow sphere is added when temperature control is to 660 DEG C in foamed process, and mixing speed is promoted in 10 seconds to 1000r/min；
Step G: cooling process observes stirring state, and uniformly rear stopping stirring to be mixed is cooled down, and the type of cooling is taken single
It is air-cooled, be not available for water cooling, chilling avoided to cause crackle；
Step H: cutting is cut after cooling and shaping, obtains high-intensitive foamed aluminium board.
2. preparation method according to claim 1, which is characterized in that in the step A, molten aluminum, hollow sphere, tackifier three
The weight ratio of person is 60:20:1.5.
3. preparation method according to claim 1, which is characterized in that the hollow sphere is hollow alumina ball, aluminium oxide
Hollow bulb diameter is 0.2~8mm.
4. preparation method according to claim 1, which is characterized in that the tackifier are calcium grain.
5. preparation method according to claim 1, which is characterized in that the holding temperature of the step C heating hollow sphere is set
It is set to 660 DEG C.
6. preparation method according to claim 1, which is characterized in that the mixing speed of molten aluminum is 800r/ in the step D
min。
7. preparation method according to claim 1, which is characterized in that it is fine aluminium ingot that the aluminium ingot, which chooses 1,.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811546569.2A CN109468482A (en) | 2018-12-18 | 2018-12-18 | A kind of high intensity foam aluminium plate preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811546569.2A CN109468482A (en) | 2018-12-18 | 2018-12-18 | A kind of high intensity foam aluminium plate preparation method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114411003A (en) * | 2022-01-27 | 2022-04-29 | 辽宁融达新材料科技有限公司 | Preparation device and preparation method of aluminum-silicon alloy wear-resistant material |
| CN114934216A (en) * | 2022-06-20 | 2022-08-23 | 吉林化工学院 | High-strength aerospace material and preparation method thereof |
| CN115029575A (en) * | 2022-07-06 | 2022-09-09 | 河北大学 | In-situ preparation method of gradient porous composite material |
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| CN103589891A (en) * | 2013-11-26 | 2014-02-19 | 哈尔滨工业大学 | Preparation methods of magnesium-based porous composite material containing Al2O3 hollow spheres |
| CN104498759A (en) * | 2014-12-02 | 2015-04-08 | 同济大学 | Preparation method of hybrid hollow sphere metal-matrix lightweight composite material |
| CN106435283A (en) * | 2016-03-07 | 2017-02-22 | 中安顺兴（北京）安全技术有限公司 | Rare earth high-strength foam aluminum prepared through melt foaming method and preparation process of rare earth high-strength foam aluminum |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103589891A (en) * | 2013-11-26 | 2014-02-19 | 哈尔滨工业大学 | Preparation methods of magnesium-based porous composite material containing Al2O3 hollow spheres |
| CN104498759A (en) * | 2014-12-02 | 2015-04-08 | 同济大学 | Preparation method of hybrid hollow sphere metal-matrix lightweight composite material |
| CN106435283A (en) * | 2016-03-07 | 2017-02-22 | 中安顺兴（北京）安全技术有限公司 | Rare earth high-strength foam aluminum prepared through melt foaming method and preparation process of rare earth high-strength foam aluminum |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113305282B (en) * | 2021-04-27 | 2022-08-26 | 山东高速高新材料科技有限公司 | Foamed aluminum production process based on electrified production equipment |
| CN114411003A (en) * | 2022-01-27 | 2022-04-29 | 辽宁融达新材料科技有限公司 | Preparation device and preparation method of aluminum-silicon alloy wear-resistant material |
| CN114411003B (en) * | 2022-01-27 | 2023-12-22 | 辽宁融达新材料科技有限公司 | Preparation device and preparation method of aluminum-silicon alloy wear-resistant material |
| CN114934216A (en) * | 2022-06-20 | 2022-08-23 | 吉林化工学院 | High-strength aerospace material and preparation method thereof |
| CN115029575A (en) * | 2022-07-06 | 2022-09-09 | 河北大学 | In-situ preparation method of gradient porous composite material |
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