CN109825730A - A kind of preparation method casting secondary aluminium alloy melt - Google Patents
A kind of preparation method casting secondary aluminium alloy melt Download PDFInfo
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- CN109825730A CN109825730A CN201910211261.0A CN201910211261A CN109825730A CN 109825730 A CN109825730 A CN 109825730A CN 201910211261 A CN201910211261 A CN 201910211261A CN 109825730 A CN109825730 A CN 109825730A
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Abstract
Proposed by the present invention is a kind of preparation method for casting secondary aluminium alloy melt.Method: referring to AlSi9Cu3 standard, A00 aluminium mother liquor is manufactured using electrolytic aluminium, 50% secondary aluminium is added in aluminium mother liquor, is stirred together for forming secondary aluminium mother liquor.The present invention adds metallic element by ratio in order in molten aluminium alloy, and casting secondary alloy liquid is made by fusing stirring.The aluminium alloy can guarantee casting quality, overcome disadvantage of the existing technology.It is suitable for as casting secondary alloy liquid and preparation method thereof application.
Description
Technical field
Proposed by the present invention is a kind of preparation method of casting secondary aluminium alloy melt of field of metallurgy application.
Background technique
For current AlSi9Cu3 since alloy flowability is poor, surface tension is excessive, so being easy to make to generate during casting
Precipitating and infusibility impurity formed paste buildup, not only influence casting continuous production, but also can make casting generate coarse grains,
Phenomena such as fine crack, so that casting yield declines, often there is product qualification rate as low as 85% or less in Die Casting.
Summary of the invention
In order to overcome existing molten aluminium alloy there are the shortcomings that, the invention proposes a kind of casting secondary aluminium alloy melts
Preparation method.This method solves the skill for improving molten aluminium alloy quality by adjusting the ingredient of metallic element in molten aluminium alloy
Art problem.
The solution adopted by the present invention to solve the technical problem is that:
Method: referring to AlSi9Cu3 standard, manufacturing A00 aluminium mother liquor using electrolytic aluminium, 50% secondary aluminium be added in aluminium mother liquor,
It is stirred together for forming secondary aluminium mother liquor.
Operating procedure: clawing aluminium slag in furnace before aluminum melting, preheat furnace body, ensure furnace body temperature at 800-850 DEG C,
Heat preservation 48 hours or more.
Low-melting aluminium ingot and metal material is first added, reduces shove charge number, increases the mode manually with mechanical addition, adds
The speed of quick-action furnace, while to add materials using churned mechanically method and be heated evenly, improve the speed of fusing.
When the upper dross of appearance about 30mm thickness in molten aluminum surface in furnace body, removes in time, improve heat utilization rate in furnace, reduce
Aluminium alloy fusing time.
In fusion process, is blown with nitrogen and boil dross above liquid, it, be in temperature of aluminum liquid 720 DEG C -740 when adding industrial silicon
DEG C when be added, dissolve it rapidly by stirring, if disposable unfused, to close fire door in time, then the 15-20min that heat up,
It is completely melt it.
Addition metallic copper will ensure temperature addition at 710-730 DEG C, various assistant metal adding procedures after industrial silicon
In will wrap metal surface with molten aluminum in furnace, then be stirred promotion fusing.
Add manganese metal at 700 DEG C -720 DEG C of temperature of aluminum liquid.
After various raw metal additions, by detecting sample, sampling with spectrometer in time after stirring, slagging-off, degasification
Sample spoon is placed in furnace body liquid middle and lower part by people, after survey report data are up to standard after being analyzed, by melted aluminium alloy
Ingot casting is carried out after standing 15min, if sampling is unqualified to be adjusted in time, until complying with standard data parameters for casting
Ingot.
Good effect: the present invention adds metallic element by ratio in order in molten aluminium alloy, stirs by fusing
Casting secondary alloy liquid is made.The aluminium alloy can guarantee casting quality, overcome disadvantage of the existing technology.It is suitable for conduct
Casting secondary alloy liquid and preparation method thereof application.
Specific embodiment
Preparation method:
Referring to AlSi9Cu3 standard, A00 aluminium mother liquor is manufactured using electrolytic aluminium, 50% secondary aluminium is added in aluminium mother liquor, stirs jointly
It mixes to form secondary aluminium mother liquor.
Technical principle:
By AlSi9Cu3 standard, in aluminium alloy stock, aluminium (Al) surplus, copper (Cu) 2.0 ~ 3.5, silicon (Si) 8.0 ~ 11.0, magnesium
(Mg) 0.1 ~ 0.5, zinc (Zn)≤1.2, iron (Fe)≤0.8, manganese (Mn) 0.1 ~ 0.5.
Wherein the content of iron is limited within 0.8% according to the actual content in A00.
In this secondary aluminium alloy melt, due to joined secondary aluminium, so that casting fluidity is good, intensity is high, casting
Quality has greatly improved, and secondary aluminium is utilized, so at low cost.
Innovative point is: being melted jointly using A00 aluminium and secondary aluminium and regeneration aluminum melt is made.So that casting quality improves,
Reduce production cost.
Operating procedure:
Aluminium slag in furnace is clawed before aluminum melting, preheats furnace body, ensure furnace body temperature at 800-850 DEG C, keep the temperature 48 hours with
On.
Low-melting aluminium ingot and metal material is first added, reduces shove charge number, increases the mode manually with mechanical addition, adds
The speed of quick-action furnace, while to add materials using churned mechanically method and be heated evenly, improve the speed of fusing.
When the upper dross of appearance about 30mm thickness in molten aluminum surface in furnace body, removes in time, improve heat utilization rate in furnace, reduce
Aluminium alloy fusing time.
In fusion process, is blown with nitrogen and boil dross above liquid, it, be in temperature of aluminum liquid 720 DEG C -740 when adding industrial silicon
DEG C when be added, dissolve it rapidly by stirring, if disposable unfused, to close fire door in time, then the 15-20min that heat up,
It is completely melt it.
Addition metallic copper will ensure temperature addition at 710-730 DEG C, various assistant metal adding procedures after industrial silicon
In will wrap metal surface with molten aluminum in furnace, then be stirred promotion fusing.
Add manganese metal at 700 DEG C -720 DEG C of temperature of aluminum liquid.
After various raw metal additions, by detecting sample, sampling with spectrometer in time after stirring, slagging-off, degasification
Sample spoon is placed in furnace body liquid middle and lower part by people, after survey report data are up to standard after being analyzed, by melted aluminium alloy
Ingot casting is carried out after standing 15min, if sampling is unqualified to be adjusted in time, can be cast until complying with standard data parameters
Ingot.
The electrolytic aluminium is aluminium ingot, secondary aluminium.
The silicon pounds into the fritter of 20-40mm.
The manganese content reaches 95%, blocky-shaped particle of the size between 20-30mm.
The copper is naked copper, red copper, red metal.
The AlSi9Cu3 is the alloy for including aluminium, silicon and copper, has the standard of specification in Aluminum field.
Advantage:
During preparing secondary aluminium alloy, the combination of each chemical component additive amount is refined, to its aluminum alloy melt practicability
Optimization is given, the proportion of aluminium alloy, the addition sequence and addition temperature of each elements such as control silicon, copper, zinc, manganese, iron are had adjusted
Control, to obtain density in 2.6-2.7g/cm3Alloy pig, aluminum ingot casting mobility is high, and casting porosity defects lack finished product
Rate is high.
Secondary aluminium alloy liquid reduces the content of Fe, it is coarse to reduce spicule by means of ADC12 chemical analysis, adjustment proportion
Crystal grain is formed, and increases bulk density to 2.68g/cm3.The content for limiting impurity titanium is increased in right amount accordingly, plays refinement aluminium
The effect of crystalline structure.
Ensure that the content of Cu, reduction Ni content guarantee that brittleness is also reduced while its wearability, extensibility improves casting
The toughness of part.
The metallic element of addition includes aluminium, copper, iron silicon, magnesium, zinc and manganese element, is added in proportion.
| Al | Cu | Fe | Si | Mg | Zn | Mn | |
| Adcl2 | Surplus | 3.6-4 | 1.3 | 9.6-12 | 0.3 | 1 | 0.3-0.5 |
| A380 | Surplus | 3.0-4 | ≤24 | 7.5-9.5 | < 0.1 | < 0.8 | < 0.5 |
| A356 | Surplus | 0.2 | < 0.2 | 6.5-7.5 | 0.2-0.4 | < 0.5 | < 0.5 |
Comparative analysis:
| Al | Cu | Fe | Si | Mg | Zn | Mn | Ti | Ni | |
| Original Si9Cu3 | Surplus | 2-4 | 0.6-1.1 | 8-11 | 0.15-0.5 | ≤1.2 | 0.15-0.55 | ≤0.2 | 0.2 |
| Si9Cu3 now | Surplus | 1.8-3.0 | 0.6-0.8 | 8.5-10.5 | 0.25-0.45 | 0.6-1.0 | 0.25-0.4 | < 0.15 | 0.12 |
Claims (5)
1. a kind of preparation method for casting secondary aluminium alloy melt, it is characterized in that:
Preparation method:
Referring to AlSi9Cu3 standard, A00 aluminium mother liquor is manufactured using electrolytic aluminium, 50% secondary aluminium is added in aluminium mother liquor, stirs jointly
It mixes to form secondary aluminium mother liquor；
Operating procedure:
Aluminium slag in furnace is clawed before aluminum melting, preheats furnace body, ensure furnace body temperature at 800-850 DEG C, keep the temperature 48 hours with
On；
Low-melting aluminium ingot and metal material is first added；
When the upper dross of appearance about 30mm thickness in molten aluminum surface in furnace body, remove in time；
In fusion process, is blown with nitrogen and boil dross above liquid, it, be at 720 DEG C -740 DEG C of temperature of aluminum liquid when adding industrial silicon
It is added, dissolves it rapidly by stirring, if disposable unfused, to close fire door in time, then the 15-20min that heat up, make it
It is completely melt；
Addition metallic copper will ensure temperature addition at 710-730 DEG C after industrial silicon, in various assistant metal adding procedures all
Metal surface is wrapped with molten aluminum in furnace, then is stirred promotion fusing；
Add manganese metal at 700 DEG C -720 DEG C of temperature of aluminum liquid；
After various raw metal additions, by detecting sample with spectrometer in time after stirring, slagging-off, degasification, sampling people is wanted
Sample spoon is placed in furnace body liquid middle and lower part, after survey report data are up to standard after being analyzed, melted aluminium alloy is stood
Ingot casting is carried out after 15min, if sampling is unqualified to be adjusted in time, until complying with standard data parameters for ingot casting.
2. a kind of preparation method for casting secondary aluminium alloy melt according to claim 1, it is characterized in that: the electrolytic aluminium
For A00 aluminium ingot, secondary aluminium.
3. a kind of preparation method for casting secondary aluminium alloy melt according to claim 1, it is characterized in that: the silicon is pounded into
The fritter of 20-40mm.
4. a kind of preparation method for casting secondary aluminium alloy melt according to claim 1, it is characterized in that: the manganese content
Reach 95%, blocky-shaped particle of the size between 20-30mm.
5. a kind of preparation method for casting secondary aluminium alloy melt according to claim 1, it is characterized in that: the copper is naked
Copper, red copper, red metal.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114107717A (en) * | 2021-11-25 | 2022-03-01 | 博克精密部件(广东)有限公司 | Metal smelting process for improving strength of die-casting aluminum alloy |
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| CN101381814A (en) * | 2008-09-28 | 2009-03-11 | 姚仁祥 | Method for preparing rare-earth aluminum silicon alloy by waste aluminum recovery and rare-earth aluminum silicon alloy thereof |
| CN101921933A (en) * | 2010-06-03 | 2010-12-22 | 怡球金属资源再生（中国）股份有限公司 | High-purity stabilized aluminum alloy ingot and production method thereof |
| WO2015130237A1 (en) * | 2014-02-28 | 2015-09-03 | Rc Simit, D.O.O. | Process for preparation of aluminium-based alloys, especially for casting of motor vehicle parts |
| CN109355518A (en) * | 2018-12-14 | 2019-02-19 | 隆达铝业（顺平）有限公司 | A kind of high intensity hypoeutectic Al-Si-Cu alloy production technique |
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2019
- 2019-03-20 CN CN201910211261.0A patent/CN109825730A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182610A (en) * | 2007-12-07 | 2008-05-21 | 乳源东阳光精箔有限公司 | Aluminium alloy material for louvre window and manufacturing method therefor |
| CN101381814A (en) * | 2008-09-28 | 2009-03-11 | 姚仁祥 | Method for preparing rare-earth aluminum silicon alloy by waste aluminum recovery and rare-earth aluminum silicon alloy thereof |
| CN101921933A (en) * | 2010-06-03 | 2010-12-22 | 怡球金属资源再生（中国）股份有限公司 | High-purity stabilized aluminum alloy ingot and production method thereof |
| WO2015130237A1 (en) * | 2014-02-28 | 2015-09-03 | Rc Simit, D.O.O. | Process for preparation of aluminium-based alloys, especially for casting of motor vehicle parts |
| CN109355518A (en) * | 2018-12-14 | 2019-02-19 | 隆达铝业（顺平）有限公司 | A kind of high intensity hypoeutectic Al-Si-Cu alloy production technique |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114107717A (en) * | 2021-11-25 | 2022-03-01 | 博克精密部件(广东)有限公司 | Metal smelting process for improving strength of die-casting aluminum alloy |
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