CN104532036B - A kind of preparation method adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy - Google Patents
A kind of preparation method adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy Download PDFInfo
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Abstract
A kind of method adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy, it relates to a kind of employing automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy and preparation method thereof.The present invention is to solve that the blank of existing extrusion casint specialized material and a large amount of abandoned car part do not have secondary to utilize wasting problem.A kind of adopt automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy by weight percentage by the Si of 8.5%～9.5%, 0.01%～0.2% Cu, 0.9%～1% Mg, 0.01%～0.5% Fe, 0.01%～0.4% Mn, the Ti of 0.01%～0.3%, the Zn of 0.01%～0.1% and surplus be that Al makes.Method: one, melting；Two, add AZ91Mg alloy, add refining agent, slagging-off, casting.The present invention is used for processing aluminium scrap part recycling extrusion casint dedicated aluminium alloy.
Description
Technical field
The present invention relates to a kind of employing automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy and preparation method thereof.
Background technology
Along with the development of automobile industry, discharge capacity policy constantly harsh, automotive light weight technology has become a kind of development trend, and aluminium alloy becomes the important materials of automotive light weight technology, and its consumption constantly increases.The continuous lifting of car speed, proposes higher requirement to the high-strength and high-ductility of part simultaneously, and extrusion casint is as a kind of novel process, the production being applied to high-strength and high-ductility part gradually, but extrusion casint does not have special material so far.Along with automobile is satisfied the increase of the amount of having, aluminium scrap part gets more and more, and the process of aluminium scrap part also will become a problem.The recycling of aluminium scrap part also will increasingly receive publicity.
Summary of the invention
The present invention is to solve that the blank of existing extrusion casint specialized material and a large amount of abandoned car part do not have secondary to utilize wasting problem, and provide a kind of and adopt automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy and preparation method thereof.
The present invention is a kind of adopt automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy by weight percentage by the Si of 8.5%～9.5%, 0.01%～0.2% Cu, 0.9%～1% Mg, 0.01%～0.5% Fe, 0.01%～0.4% Mn, the Ti of 0.01%～0.3%, the Zn of 0.01%～0.1% and surplus be that Al makes.
A kind of method adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy of the present invention is to sequentially include the following steps:
One, automobile waste aluminum component is carried out melting in the smelting furnace that smelting temperature is 710 DEG C～730 DEG C, after molten metal is completely melt, obtain melt liquation；Described automobile waste aluminum component is the mixture of A356 aluminium alloy, ADC12 aluminium alloy and ZL102 aluminium alloy；Described melt liquation by weight percentage by the Si of 8.5%～9.5%, 0.01%～0.2% Cu, 0.01%～0.2% Mg, 0.01%～0.5% Fe, 0.01%～0.4% Mn, the Ti of 0.01%～0.3%, the Zn of 0.01%～0.1% and surplus be that Al forms；
Two, the melt liquation obtained to step one adds AZ91Mg alloy, after being incubated 1h～2h when temperature is 685 DEG C～695 DEG C, high-efficiency refining agent is put into bell jar, then bell jar is put into 200mm place under melt liquation liquid level, and stir 5min～10min, stand 5min～10min when temperature is 685 DEG C～695 DEG C, then use scummer to be removed by the slag of melt molten surface, cast molding, obtains adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy；The content of the Mg in described AZ91Mg alloy is 90%, and the addition of described AZ91Mg alloy is the 0.8%～1.2% of the quality of the melt liquation that step one obtains；The quality of described high-efficiency refining agent is the 0.15% of the quality of the melt liquation that step one obtains；Described employing automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy by weight percentage by the Si of 8.5%～9.5%, 0.01%～0.2% Cu, 0.9%～1% Mg, 0.01%～0.5% Fe, 0.01%～0.4% Mn, the Ti of 0.01%～0.3%, the Zn of 0.01%～0.1% and surplus be that Al forms.
Beneficial effects of the present invention:
The present invention is by A356 aluminium alloy, ADC12 aluminium alloy and ZL102 aluminium alloy mixed smelting by a certain percentage, and owing to A356 aluminium alloy is hypoeutectic alloy, ADC12 aluminium alloy is close to eutectic alloy, and ZL102 aluminium alloy is eutectic alloy, and mobility is best.After being mixed by a certain percentage by these three alloy, Si content is 8.5～9.5%, and Cu content is≤0.2%, forms a kind of new hypoeutectic alloy, the typical casting alloy poor fluidity of ratio, and Cu content reduces relatively, and intensity reduces.A small amount of Mg is added, it is possible to improve intensity, but reduce the mobility of material in this alloy, and extrusion casint is big cast gate, molding at a slow speed, relate to wall thickness cast member more, molten metal is pushed in metal pattern die cavity by extrusion casint depended on pressure, the reduction of mobility do not interfere with aluminum liquid in a mold fill type.After adding Mg, the consumption of expensive Cu can be decreased, reduce the density of aluminium alloy, be more suitable for lightweight.Mg is the main intensified element of Al-Si alloy, can form Mg with Si2Si phase, especially after heat treatment forms substantial amounts of Mg2Si hardening constituent, thus being effectively improved the performance of alloy.Along with Mg content increases, the Mg of formation2Si also begins to be solid-solution in matrix in large quantities, thus playing solid solution-precipitation strength effect larger, along with the diffusion of Mg, Mn spreads in the base and is easier to realize, thus the degree of dispersion-strengtherning is bigger, so along with the tensile strength increasing material and the hardness of Mg all increase.The present invention effectively recycles aluminium scrap simultaneously, waste material is become high-grade raw material, has saved the energy and achieved the sustainable development of aluminum alloy materials.In material, expensive Cu element is less, has saved cost.Form extrusion casint specialty aluminum alloy materials, fill up the extrusion casint blank without specialized material.New material proportioning is simple, has that density is little, strength and toughness is high and can the feature such as heat treatment.
Detailed description of the invention
Detailed description of the invention one: present embodiment is a kind of adopt automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy by weight percentage by the Si of 8.5%～9.5%, 0.01%～0.2% Cu, 0.9%～1% Mg, 0.01%～0.5% Fe, 0.01%～0.4% Mn, the Ti of 0.01%～0.3%, the Zn of 0.01%～0.1% and surplus be that Al makes.
Detailed description of the invention two: present embodiment and detailed description of the invention one the difference is that: adopt automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy by weight percentage by the Si of 9%, 0.1% Cu, 1% Mg, 0.2% Fe, 0.2% Mn, the Ti of 0.2%, the Zn of 0.1% and surplus be that Al makes.Other are identical with detailed description of the invention one.
Detailed description of the invention three: present embodiment and detailed description of the invention one or two the difference is that: adopt automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy by weight percentage by the Si of 9%, 0.02% Cu, 0.95% Mg, 0.4% Fe, 0.3% Mn, the Ti of 0.2%, the Zn of 0.05% and surplus be that Al makes.Other are identical with detailed description of the invention one or two.
Detailed description of the invention four: a kind of method adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy of present embodiment is to sequentially include the following steps:
One, automobile waste aluminum component is carried out melting in the smelting furnace that smelting temperature is 710 DEG C～730 DEG C, after molten metal is completely melt, obtain melt liquation；Described automobile waste aluminum component is the mixture of A356 aluminium alloy, ADC12 aluminium alloy and ZL102 aluminium alloy；Described melt liquation by weight percentage by the Si of 8.5%～9.5%, 0.01%～0.2% Cu, 0.01%～0.2% Mg, 0.01%～0.5% Fe, 0.01%～0.4% Mn, the Ti of 0.01%～0.3%, the Zn of 0.01%～0.1% and surplus be that Al forms；
Two, the melt liquation obtained to step one adds AZ91Mg alloy, after being incubated 1h～2h when temperature is 685 DEG C～695 DEG C, high-efficiency refining agent is put into bell jar, then bell jar is put into 200mm place under melt liquation liquid level, and stir 5min～10min, stand 5min～10min when temperature is 685 DEG C～695 DEG C, then use scummer to be removed by the slag of melt molten surface, cast molding, obtains adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy；The content of the Mg in described AZ91Mg alloy is 90%, and the addition of described AZ91Mg alloy is the 0.8%～1.2% of the quality of the melt liquation that step one obtains；The quality of described high-efficiency refining agent is the 0.15% of the quality of the melt liquation that step one obtains；Described employing automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy by weight percentage by the Si of 8.5%～9.5%, 0.01%～0.2% Cu, 0.9%～1% Mg, 0.01%～0.5% Fe, 0.01%～0.4% Mn, the Ti of 0.01%～0.3%, the Zn of 0.01%～0.1% and surplus be that Al forms.
Automobile waste aluminum component described in present embodiment is the mixture of A356 aluminium alloy, ADC12 aluminium alloy and ZL102 aluminium alloy, wherein A356 aluminium alloy is abandoned car wheel hub, ADC12 aluminium alloy is the cylinder body of the electromotor of abandoned car, and ZL102 aluminium alloy is other positions of abandoned car.
Present embodiment utilize direct-reading spectrometer that described A356 aluminium alloy, ADC12 aluminium alloy and ZL102 aluminium alloy are measured composition it can be seen that A356 aluminium alloy by 6.5%～7.5% Si, 0.01%～0.1% Cu, 0.3%～0.45% Mg, 0.01%～0.12% Fe, 0.01%～0.05% Mn, the Ti of 0.01%～0.2%, the Zn of 0.01%～0.05% and surplus be that Al forms；ADC12 aluminium alloy by 9.6%～12% Si, 1.5%～3.5% Cu, 0.01%～0.3% Mg, the Fe of 0.01%～0.9%, the Mn of 0.01%～0.5% and surplus be that Al forms；ZL102 aluminium alloy by 10%～13% Si, 0.01%～0.3% Cu, 0.01%～0.1% Mg, 0.01%～1% Fe, 0.01%～0.5% Mn, the Ti of 0.01%～0.2%, the Zn of 0.01%～0.1% and surplus be that Al forms.
In present embodiment, the effect of high-efficiency refining agent is slagging-off and refine.
Present embodiment is by A356 aluminium alloy, ADC12 aluminium alloy and ZL102 aluminium alloy mixed smelting by a certain percentage, and owing to A356 aluminium alloy is hypoeutectic alloy, ADC12 aluminium alloy is close to eutectic alloy, and ZL102 aluminium alloy is eutectic alloy, and mobility is best.After being mixed by a certain percentage by these three alloy, Si content is 8.5～9.5%, and Cu content is≤0.2%, forms a kind of new hypoeutectic alloy, the typical casting alloy poor fluidity of ratio, and Cu content reduces relatively, and intensity reduces.A small amount of Mg is added, it is possible to improve intensity, but reduce the mobility of material in this alloy, and extrusion casint is big cast gate, molding at a slow speed, relate to wall thickness cast member more, molten metal is pushed in metal pattern die cavity by extrusion casint depended on pressure, the reduction of mobility do not interfere with aluminum liquid in a mold fill type.After adding Mg, the consumption of expensive Cu can be decreased, reduce the density of aluminium alloy, be more suitable for lightweight.Mg is the main intensified element of Al-Si alloy, can form Mg with Si2Si phase, especially after heat treatment forms substantial amounts of Mg2Si hardening constituent, thus being effectively improved the performance of alloy.Along with Mg content increases, the Mg of formation2Si also begins to be solid-solution in matrix in large quantities, thus playing solid solution-precipitation strength effect larger, along with the diffusion of Mg, Mn spreads in the base and is easier to realize, thus the degree of dispersion-strengtherning is bigger, so along with the tensile strength increasing material and the hardness of Mg all increase.Present embodiment effectively recycles aluminium scrap simultaneously, waste material is become high-grade raw material, has saved the energy and achieved the sustainable development of aluminum alloy materials.In material, expensive Cu element is less, has saved cost.Form extrusion casint specialty aluminum alloy materials, fill up the extrusion casint blank without specialized material.New material proportioning is simple, has that density is little, strength and toughness is high and can the feature such as heat treatment.
Detailed description of the invention five: present embodiment and detailed description of the invention four the difference is that: automobile waste aluminum component is carried out melting by step one in the smelting furnace that smelting temperature is 720 DEG C.Other are identical with detailed description of the invention four.
Detailed description of the invention six: present embodiment and detailed description of the invention four or five the difference is that: step 2 is incubated 1h when temperature is 690 DEG C.Other are identical with detailed description of the invention four or five.
Detailed description of the invention seven: one of present embodiment and detailed description of the invention four to six the difference is that: step 2 stands 5min when temperature is 690 DEG C.Other are identical with one of detailed description of the invention four to six.
Detailed description of the invention eight: one of present embodiment and detailed description of the invention four to seven the difference is that: adopt described in step 2 automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy by weight percentage by the Si of 9%, 0.1% Cu, 1% Mg, 0.2% Fe, 0.2% Mn, the Ti of 0.2%, the Zn of 0.1% and surplus be that Al forms.Other are identical with one of detailed description of the invention four to seven.
Detailed description of the invention nine: one of present embodiment and detailed description of the invention four to eight the difference is that: adopt described in step 2 automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy by weight percentage by the Si of 9%, 0.02% Cu, 0.95% Mg, 0.4% Fe, 0.3% Mn, the Ti of 0.2%, the Zn of 0.05% and surplus be that Al forms.Other are identical with one of detailed description of the invention four to eight.
The effect of the present invention is verified by following example:
Embodiment one: a kind of method adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy is to sequentially include the following steps:
One, automobile waste aluminum component is carried out melting in the smelting furnace that smelting temperature is 720 DEG C, after molten metal is completely melt, obtain melt liquation；Described automobile waste aluminum component is the mixture of A356 aluminium alloy, ADC12 aluminium alloy and ZL102 aluminium alloy；Described melt liquation by weight percentage by the Si of 8.5%～9.5%, 0.01%～0.2% Cu, 0.01%～0.2% Mg, 0.01%～0.5% Fe, 0.01%～0.4% Mn, the Ti of 0.01%～0.3%, the Zn of 0.01%～0.1% and surplus be that Al forms；
Two, the melt liquation obtained to step one adds AZ91Mg alloy, after being incubated 1h when temperature is 690 DEG C, high-efficiency refining agent is put into bell jar, then bell jar is put into 200mm place under melt liquation liquid level, and stir 5min, stand 5min when temperature is 690 DEG C, then use scummer to be removed by the slag of melt molten surface, cast molding, obtains adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy；The content of the Mg in described AZ91Mg alloy is 90%, and the addition of described AZ91Mg alloy is the 0.8%～1.2% of the quality of the melt liquation that step one obtains；The quality of described high-efficiency refining agent is the 0.15% of the quality of the melt liquation that step one obtains；Described employing automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy by weight percentage by the Si of 8.5%～9.5%, 0.01%～0.2% Cu, 0.9%～1% Mg, 0.01%～0.5% Fe, 0.01%～0.4% Mn, the Ti of 0.01%～0.3%, the Zn of 0.01%～0.1% and surplus be that Al forms.
The present embodiment utilize direct-reading spectrometer that described A356 aluminium alloy, ADC12 aluminium alloy and ZL102 aluminium alloy are measured composition it can be seen that A356 aluminium alloy by 6.5%～7.5% Si, 0.01%～0.1% Cu, 0.3%～0.45% Mg, 0.01%～0.12% Fe, 0.01%～0.05% Mn, the Ti of 0.01%～0.2%, the Zn of 0.01%～0.05% and surplus be that Al forms；ADC12 aluminium alloy by 9.6%～12% Si, 1.5%～3.5% Cu, 0.01%～0.3% Mg, the Fe of 0.01%～0.9%, the Mn of 0.01%～0.5% and surplus be that Al forms；ZL102 aluminium alloy by 10%～13% Si, 0.01%～0.3% Cu, 0.01%～0.1% Mg, 0.01%～1% Fe, 0.01%～0.5% Mn, the Ti of 0.01%～0.2%, the Zn of 0.01%～0.1% and surplus be that Al forms.
The mass ratio of described ZL102 aluminium alloy, ADC12 aluminium alloy and A356 aluminium alloy is 2:3:5.
Use the part adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy to make that the present invention obtains, detect through mechanical performance, after T6 processes, strength of alloy reaches 355MPa, hardness reaches 143HB, more independent A356 aluminium alloy, ADC12 aluminium alloy are compared with ZL102 aluminium alloy, and mechanical property improves 35%～50%.
The present embodiment is by A356 aluminium alloy, ADC12 aluminium alloy and ZL102 aluminium alloy mixed smelting by a certain percentage, and owing to A356 aluminium alloy is hypoeutectic alloy, ADC12 aluminium alloy is close to eutectic alloy, and ZL102 aluminium alloy is eutectic alloy, and mobility is best.After being mixed by a certain percentage by these three alloy, Si content is 8.5～9.5%, and Cu content is≤0.2%, forms a kind of new hypoeutectic alloy, the typical casting alloy poor fluidity of ratio, and Cu content reduces relatively, and intensity reduces.A small amount of Mg is added, it is possible to improve intensity, but reduce the mobility of material in this alloy, and extrusion casint is big cast gate, molding at a slow speed, relate to wall thickness cast member more, molten metal is pushed in metal pattern die cavity by extrusion casint depended on pressure, the reduction of mobility do not interfere with aluminum liquid in a mold fill type.After adding Mg, the consumption of expensive Cu can be decreased, reduce the density of aluminium alloy, be more suitable for lightweight.Mg is the main intensified element of Al-Si alloy, can form Mg with Si2Si phase, especially after heat treatment forms substantial amounts of Mg2Si hardening constituent, thus being effectively improved the performance of alloy.Along with Mg content increases, the Mg of formation2Si also begins to be solid-solution in matrix in large quantities, thus playing solid solution-precipitation strength effect larger, along with the diffusion of Mg, Mn spreads in the base and is easier to realize, thus the degree of dispersion-strengtherning is bigger, so along with the tensile strength increasing material and the hardness of Mg all increase.The present embodiment effectively recycles aluminium scrap simultaneously, waste material is become high-grade raw material, has saved the energy and achieved the sustainable development of aluminum alloy materials.In material, expensive Cu element is less, has saved cost.Form extrusion casint specialty aluminum alloy materials, fill up the extrusion casint blank without specialized material.New material proportioning is simple, has that density is little, strength and toughness is high and can the feature such as heat treatment.
Claims (6)
1. the method adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy, it is characterised in that the method adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy is to sequentially include the following steps:
One, automobile waste aluminum component is carried out melting in the smelting furnace that smelting temperature is 710 DEG C～730 DEG C, after molten metal is completely melt, obtain melt liquation；Described automobile waste aluminum component is the mixture of A356 aluminium alloy, ADC12 aluminium alloy and ZL102 aluminium alloy；Described melt liquation by weight percentage by the Si of 8.5%～9.5%, 0.01%～0.2% Cu, 0.01%～0.2% Mg, 0.01%～0.5% Fe, 0.01%～0.4% Mn, the Ti of 0.01%～0.3%, the Zn of 0.01%～0.1% and surplus be that Al forms；
Two, the melt liquation obtained to step one adds AZ91Mg alloy, after being incubated 1h～2h when temperature is 685 DEG C～695 DEG C, high-efficiency refining agent is put into bell jar, then bell jar is put into 200mm place under melt liquation liquid level, and stir 5min～10min, stand 5min～10min when temperature is 685 DEG C～695 DEG C, then use scummer to be removed by the slag of melt molten surface, cast molding, obtains adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy；The content of the Mg in described AZ91Mg alloy is 90%, and the addition of described AZ91Mg alloy is the 0.8%～1.2% of the quality of the melt liquation that step one obtains；The quality of described high-efficiency refining agent is the 0.15% of the quality of the melt liquation that step one obtains；Described employing automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy by weight percentage by the Si of 8.5%～9.5%, 0.01%～0.2% Cu, 0.9%～1% Mg, 0.01%～0.5% Fe, 0.01%～0.4% Mn, the Ti of 0.01%～0.3%, the Zn of 0.01%～0.1% and surplus be that Al forms.
2. a kind of method adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy according to claim 1, it is characterised in that in step one, automobile waste aluminum component is carried out melting in the smelting furnace that smelting temperature is 720 DEG C.
3. a kind of method adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy according to claim 1, it is characterised in that be incubated 1h in step 2 when temperature is 690 DEG C.
4. a kind of method adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy according to claim 1, it is characterised in that stand 5min in step 2 when temperature is 690 DEG C.
5. a kind of method adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy according to claim 1, it is characterised in that adopt described in step 2 automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy by weight percentage by the Si of 9%, 0.1% Cu, 1% Mg, 0.2% Fe, 0.2% Mn, the Ti of 0.2%, the Zn of 0.1% and surplus be that Al forms.
6. a kind of method adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy according to claim 1, it is characterised in that adopt described in step 2 automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy by weight percentage by the Si of 9%, 0.02% Cu, 0.95% Mg, 0.4% Fe, 0.3% Mn, the Ti of 0.2%, the Zn of 0.05% and surplus be that Al forms.
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| CN108286000A (en) * | 2018-01-31 | 2018-07-17 | 深圳市铭利达精密机械有限公司 | A kind of high-strength aluminum alloy material |
| CN110760706B (en) | 2018-07-26 | 2022-07-29 | 中国科学院过程工程研究所 | Method for preparing copper-containing aluminum alloy by recycling aviation industry aluminum alloy waste |
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| CN109628859B (en) * | 2019-01-31 | 2020-12-04 | 北京科技大学 | Extrusion method of regenerative wrought aluminum alloy profile |
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