CN106222469A - The preparation method of enhancement mode foam aluminium alloy - Google Patents
The preparation method of enhancement mode foam aluminium alloy Download PDFInfo
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- CN106222469A CN106222469A CN201610824589.6A CN201610824589A CN106222469A CN 106222469 A CN106222469 A CN 106222469A CN 201610824589 A CN201610824589 A CN 201610824589A CN 106222469 A CN106222469 A CN 106222469A
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- aluminium alloy
- prefabricated component
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- foamed
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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
- 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
- C22C32/0047—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 carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0052—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 carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides
- C22C32/0063—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 carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides based on SiC
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
The present invention proposes the preparation method of a kind of enhancement mode foam aluminium alloy, comprise the following steps: 1) aluminium alloy is heated to fusing, and adjust the temperature to 630 DEG C～680 DEG C, add be equivalent to the 1 of aluminium alloy weight～the silicon carbide ceramics granule of 6% in molten aluminium alloy, stirring and evenly mixing response time 5～15 minutes, add the titantium hydride of be equivalent to aluminium alloy weight 1.2～3.6%, melt after stirring is carried out spray cooling, it is thus achieved that a porosity foam aluminium alloy prefabricated component less than 70%；2) an above-mentioned porosity foamed aluminium alloy prefabricated component less than 70% is put in mould, die face is applied 1.2～1.6MPa pressure, and at temperature 30s～120s of 750 DEG C～850 DEG C, make a foamed aluminium alloy prefabricated component secondary foaming in a mold, by the foam aluminium alloy cooling after foaming, it is thus achieved that foamed aluminium alloy product.The method obtains foam aluminium alloy and can be used for preparing the profiled piece of complicated shape, and shock resistance is preferable with abrasion resistance properties.
Description
Technical field
The invention belongs to foam metal preparing technical field, be specifically related to the preparation side of a kind of enhancement mode foam aluminium alloy
Method.
Background technology
Foamed Al-allov has the features such as density is little, porosity is high, specific surface area is big, and it is in conduction, heat conduction, suction
The aspects such as sound, energy-absorbing, damping and electromagnetic shielding have good performance, in machinery, building, the energy, chemical industry, metallurgy, traffic, boat
The fields such as sky all have been widely used, but simple foamed Al-allov is owing to it is in shock resistance, and wear-resistant aspect compares
Difference so that it is range of application is very restricted.
And the demand of high-tech sector civilian due to automobile etc., foamed aluminium profiled piece, sandwich structure are just becoming foam gold
Belong to the forward position in preparation field.Traditional foam melt method directly prepares profiled piece, sandwich structure, foam aluminium alloy filling
The aspect such as part, built-in fitting also exists the difficulty being difficult to go beyond, and powder metallurgic method prepares foamed aluminium profiled piece, sandwich structure etc.
Then there is the defects such as cost is high, technique is unstable in aspect.Traditional foam melt method obtains foam aluminium alloy filling member, built-in fitting
There is shock resistance, wear-resistant aspect is poor so that it is range of application is very restricted.
Summary of the invention
The present invention proposes the preparation method of a kind of enhancement mode foam aluminium alloy, and the method obtains foam aluminium alloy and can be used for making
The profiled piece of standby complicated shape, and shock resistance is preferable with abrasion resistance properties.
The technical scheme is that and be achieved in that:
The preparation method of a kind of enhancement mode foam aluminium alloy, comprises the following steps:
1) aluminium alloy is heated to fusing, and adjusts the temperature to 630 DEG C～680 DEG C, add and be equivalent to the 1 of aluminium alloy weight
～6% silicon carbide ceramics granule in molten aluminium alloy, stirring and evenly mixing response time 5～15 minutes so that melt viscosity is steady
Fixed, add the titantium hydride of be equivalent to aluminium alloy weight 1.2～3.6%, stirring makes titantium hydride be evenly distributed in the melt, will
Melt after stirring carries out spray cooling, it is thus achieved that a porosity foam aluminium alloy prefabricated component less than 70%；
2) an above-mentioned porosity foamed aluminium alloy prefabricated component less than 70% is put in mould, applies die face
1.2～1.6MPa pressure, and at temperature 30s～120s of 750 DEG C～850 DEG C so that one time foamed aluminium alloy is prefabricated
Part secondary foaming in a mold, by the foam aluminium alloy cooling after foaming, it is thus achieved that foamed aluminium alloy product.
Further, by step 1) titantium hydride first oxidation processes 0.5～1h under the conditions of 400 DEG C～500 DEG C.
Further, step 1) also account for aluminium alloy weight 0.2～the sodium chloride of 0.6% middle addition in aluminium alloy solution.
Further, in step 2) in the above-mentioned porosity foamed aluminium alloy prefabricated component less than 70% is done surface removes
Oxygen processes, and the aluminium sheet then surface deoxygenation processed or aluminium alloy plate are positioned over the surface of prefabricated component, then put it into mould
Tool heats.
Beneficial effects of the present invention:
1, the tackifier of the present invention selects silicon nitride ceramic particles to be possible not only to strengthen the viscosity of metal liquid, but also can
With shock resistance and the abrasion resistance properties of foam aluminium alloy, expand range of application.Further, in order to overcome silicon nitride ceramic particles band
Carry out the problem that pore size distribution$ is uneven, this problem can have been solved by adding sodium chloride.
2, a foamed aluminium alloy prefabricated component heating to relatively low porosity, can make secondary foaming aluminium alloy prefabricated
Part melts, and the most remaining titantium hydride decomposes generation hydrogen makes its foamed, it is thus achieved that secondary foaming foam aluminium alloy, carries
High heating-up temperature, can make prefabricated component firing rate improve, thus reduce the loss amount of hydrogen, it is also possible to improve hydrogenation further
The decomposition amount of titanium, and then improve foam aluminium alloy porosity.When carrying out the fusing of secondary foaming aluminium alloy prefabricated component, to mould
End face applies 1.2～1.6MPa pressure, can effectively facilitate gas being uniformly distributed in molten metal, be conducive to obtaining porosity
Height, the foam aluminium alloy that aperture is little.And the aperture averaging particle diameter of the foamed aluminium prepared is only 2.2～2.6mm, porosity is
80～85%.
Detailed description of the invention
Embodiment 1
The preparation method of a kind of enhancement mode foam aluminium alloy, comprises the following steps:
1) aluminium alloy is heated to fusing, and adjusts the temperature to 630 DEG C, add the carbon of be equivalent to aluminium alloy weight 1%
SiClx ceramic particle, in molten aluminium alloy, in the 15 minutes stirring and evenly mixing response time so that melt viscosity is stable, adds quite
In the titantium hydride of the 1.2% of aluminium alloy weight, stirring makes titantium hydride be evenly distributed in the melt, is sprayed by the melt after stirring
Fog cooling a, it is thus achieved that porosity foam aluminium alloy prefabricated component less than 70%；
2) an above-mentioned porosity foamed aluminium alloy prefabricated component less than 70% is put in mould, applies die face
1.2MPa pressure, and at the temperature 30s of 750 DEG C so that a foamed aluminium alloy prefabricated component secondary foam in a mold
Change, by the foam aluminium alloy cooling after foaming, it is thus achieved that foamed aluminium alloy product.
Embodiment 2
The preparation method of a kind of enhancement mode foam aluminium alloy, comprises the following steps:
1) aluminium alloy is heated to fusing, and adjusts the temperature to 650 DEG C, add the carbon of be equivalent to aluminium alloy weight 3%
SiClx ceramic particle, in molten aluminium alloy, in the 10 minutes stirring and evenly mixing response time so that melt viscosity is stable, adds quite
In the titantium hydride of the 2.0% of aluminium alloy weight, stirring makes titantium hydride be evenly distributed in the melt, is sprayed by the melt after stirring
Fog cooling a, it is thus achieved that porosity foam aluminium alloy prefabricated component less than 70%；
2) an above-mentioned porosity foamed aluminium alloy prefabricated component less than 70% is put in mould, applies die face
1.3MPa pressure, and at the temperature 50s of 780 DEG C so that a foamed aluminium alloy prefabricated component secondary foam in a mold
Change, by the foam aluminium alloy cooling after foaming, it is thus achieved that foamed aluminium alloy product.
Embodiment 3
The preparation method of a kind of enhancement mode foam aluminium alloy, comprises the following steps:
1) aluminium alloy is heated to fusing, and adjusts the temperature to 670 DEG C, add and be equivalent to the 1～6% of aluminium alloy weight
Silicon carbide ceramics granule in molten aluminium alloy, the 8 minutes stirring and evenly mixing response time so that melt viscosity is stable, adds phase
The titantium hydride of oxidation processes 1h under the conditions of 400 DEG C in the 3.0% of aluminium alloy weight, stirring makes titantium hydride be distributed in the melt
Uniformly, the melt after stirring is carried out spray cooling, it is thus achieved that a porosity foam aluminium alloy prefabricated component less than 70%；
2) an above-mentioned porosity foamed aluminium alloy prefabricated component less than 70% is put in mould, applies die face
1.4MPa pressure, and at the temperature 80s of 810 DEG C so that a foamed aluminium alloy prefabricated component secondary foam in a mold
Change, by the foam aluminium alloy cooling after foaming, it is thus achieved that foamed aluminium alloy product.
Embodiment 4
The preparation method of a kind of enhancement mode foam aluminium alloy, comprises the following steps:
1) aluminium alloy is heated to fusing, and adjusts the temperature to 680 DEG C, add the carbon of be equivalent to aluminium alloy weight 6%
SiClx ceramic particle and account for the sodium chloride of aluminium alloy weight 0.2% in molten aluminium alloy, the stirring and evenly mixing response time 5 points
Clock so that melt viscosity is stable, adds oxidation processes 0.8h under the conditions of 460 DEG C of be equivalent to aluminium alloy weight 3.6%
Titantium hydride, stirring makes titantium hydride be evenly distributed in the melt, the melt after stirring is carried out spray cooling, it is thus achieved that porosity is less than
Foam aluminium alloy prefabricated component of 70%；
2) an above-mentioned porosity foamed aluminium alloy prefabricated component less than 70% is put in mould, applies die face
1.6MPa pressure, and at the temperature 120s of 850 DEG C so that a foamed aluminium alloy prefabricated component secondary foam in a mold
Change, by the foam aluminium alloy cooling after foaming, it is thus achieved that foamed aluminium alloy product.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (4)
1. the preparation method of an enhancement mode foam aluminium alloy, it is characterised in that comprise the following steps:
1) aluminium alloy is heated to fusing, and adjusts the temperature to 630 DEG C～680 DEG C, add be equivalent to aluminium alloy weight 1～
The silicon carbide ceramics granule of 6% in molten aluminium alloy, stirring and evenly mixing response time 5～15 minutes so that melt viscosity is stable,
Adding the titantium hydride of be equivalent to aluminium alloy weight 1.2～3.6%, stirring makes titantium hydride be evenly distributed in the melt, will stir
Melt after mixing carries out spray cooling, it is thus achieved that a porosity foam aluminium alloy prefabricated component less than 70%；
2) an above-mentioned porosity foamed aluminium alloy prefabricated component less than 70% is put in mould, and die face is applied 1.2
～1.6MPa pressure, and at temperature 30s～120s of 750 DEG C～850 DEG C so that one time foamed aluminium alloy prefabricated component exists
Secondary foaming in mould, by the foam aluminium alloy cooling after foaming, it is thus achieved that foamed aluminium alloy product.
The preparation method of enhancement mode foam aluminium alloy the most according to claim 1, it is characterised in that by step 1) hydrogenation
Titanium first oxidation processes 0.5～1h under the conditions of 400 DEG C～500 DEG C.
The preparation method of enhancement mode foam aluminium alloy the most according to claim 1, it is characterised in that step 1) middle addition aluminum
Alloy solution also accounts for aluminium alloy weight 0.2～the sodium chloride of 0.6%.
The preparation method of enhancement mode foam aluminium alloy the most according to claim 1, it is characterised in that in step 2) in by upper
State a porosity foamed aluminium alloy prefabricated component less than 70% and do surface deoxygenation process, then surface deoxygenation was processed
Aluminium sheet or aluminium alloy plate are positioned over the surface of prefabricated component, then put it into heating in mould.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610824589.6A CN106222469A (en) | 2016-09-14 | 2016-09-14 | The preparation method of enhancement mode foam aluminium alloy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610824589.6A CN106222469A (en) | 2016-09-14 | 2016-09-14 | The preparation method of enhancement mode foam aluminium alloy |
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| CN201610824589.6A Pending CN106222469A (en) | 2016-09-14 | 2016-09-14 | The preparation method of enhancement mode foam aluminium alloy |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107855500A (en) * | 2017-10-25 | 2018-03-30 | 界首市菁华科技信息咨询服务有限公司 | A kind of casting technique of the composite foamed new material of effective energy-absorbing |
| CN109253622A (en) * | 2018-08-03 | 2019-01-22 | 荆门它山之石电子科技有限公司 | A kind of smelting furnace preparing the aluminium alloy containing micropore |
| CN111362368A (en) * | 2020-03-12 | 2020-07-03 | 黄冈师范学院 | Preparation method of iron-carbon micro-electrolysis ball |
| CN113481403A (en) * | 2021-06-22 | 2021-10-08 | 安徽省新方尊自动化科技有限公司 | High-strength wear-resistant foamed aluminum composite material and preparation method thereof |
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| CN1644724A (en) * | 2005-01-20 | 2005-07-27 | 东南大学 | Production of foamed aluminium alloy deformed piece by secondary foam |
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2016
- 2016-09-14 CN CN201610824589.6A patent/CN106222469A/en active Pending
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| CN1876862A (en) * | 2006-07-05 | 2006-12-13 | 东南大学 | Method for preparing foamed aluminium alloy product by secondary foaming |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107855500A (en) * | 2017-10-25 | 2018-03-30 | 界首市菁华科技信息咨询服务有限公司 | A kind of casting technique of the composite foamed new material of effective energy-absorbing |
| CN109253622A (en) * | 2018-08-03 | 2019-01-22 | 荆门它山之石电子科技有限公司 | A kind of smelting furnace preparing the aluminium alloy containing micropore |
| CN111362368A (en) * | 2020-03-12 | 2020-07-03 | 黄冈师范学院 | Preparation method of iron-carbon micro-electrolysis ball |
| CN113481403A (en) * | 2021-06-22 | 2021-10-08 | 安徽省新方尊自动化科技有限公司 | High-strength wear-resistant foamed aluminum composite material and preparation method thereof |
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