CN105331855B - A kind of cocrystallized Al-Si alloy production technology - Google Patents
A kind of cocrystallized Al-Si alloy production technology Download PDFInfo
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- CN105331855B CN105331855B CN201510650406.9A CN201510650406A CN105331855B CN 105331855 B CN105331855 B CN 105331855B CN 201510650406 A CN201510650406 A CN 201510650406A CN 105331855 B CN105331855 B CN 105331855B
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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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- 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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—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
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of cocrystallized Al-Si alloy production technologies, include the following steps：Required material is divided into two groups by dispensing, and first group is silicon and fine aluminium, and second group is iron and alumal, and the content of silicon accounts for the 11.7%~11.9% of all material；It puts into first group of material and is heated to 730 DEG C~750 DEG C；Second group of material is put into, stirring makes it be mixed and heated to 800 DEG C~830 DEG C with first group of material；Stop heating simultaneously inflated with nitrogen 8~12 minutes, and 0.2%~0.3% refining agent that content accounts for all material is added；It is stirred after skimming：Heating makes melt be warming up to 680 DEG C~700 DEG C；Casting, and the temperature of holding melt is 680 DEG C~720 DEG C in casting process.Present invention solves the technical problem that the shortcomings that being that the cocrystallized Al-Si alloy of existing European Union's die casting aluminium trade mark 47100 is overcome to easy to produce shrinkage cavity, provides a kind of cocrystallized Al-Si alloy production technology for reducing shrinkage cavity or eliminating shrinkage cavity.
Description
Technical field
The present invention relates to metal smelt fields.Specially a kind of cocrystallized Al-Si alloy production technology.
Background technology
Alusil alloy density is small, and coefficient of thermal expansion is low, and casting character and abrasion resistance are good, has with the alloy-steel casting that it casts
There are very high resistance impact capacity and good high pressure compactness, be greatly improved service life, commonly uses it and produce space travel
Device and auto parts and components.
European Union's die casting aluminium trade mark 47100 is a kind of cocrystallized Al-Si alloy, and the silicon content of the cocrystallized Al-Si alloy exists
Between 10.5%~13.5%.In current production process, in order to improve product qualification rate, when dispensing, silicon contains with 12%
It measures to match.And in silicone content 12% or so, casting process is easy to generate shrinkage cavity or shrinkage porosite, under the quality for leading to product
Drop.
Invention content
Present invention solves the technical problem that being to overcome the cocrystallized Al-Si alloy of existing European Union's die casting aluminium trade mark 47100 to hold
The shortcomings that being also easy to produce shrinkage cavity provides a kind of cocrystallized Al-Si alloy production technology for reducing shrinkage cavity or eliminating shrinkage cavity.
The cocrystallized Al-Si alloy production technology of the present invention, includes the following steps：
(1) required material is divided into two groups by dispensing, and first group is silicon and fine aluminium, and second group is iron and alumal, and silicon
Content account for the 11.7%~11.9% of all material；
(2) it puts into first group of material and is heated to 730 DEG C~750 DEG C；
(3) second group of material is put into, stirring makes it be mixed and heated to 800 DEG C~830 DEG C with first group of material；
(4) stop heating simultaneously inflated with nitrogen 8~12 minutes, and 0.2%~0.3% refining that content accounts for all material is added
Agent；
(5) it is stirred after skimming：
(6) heating makes melt be warming up to 680 DEG C~700 DEG C；
(7) it casts, and the temperature of holding melt is 680 DEG C~720 DEG C in casting process.
Preferably, in the dispensing of step (1), the content of silicon accounts for the 11.8% of all material.
Preferably, the time of inflated with nitrogen is 10 minutes in step (4).
Preferably, the refining agent content being added in step (4) is 0.3%.
Preferably, further including the steps that sample examination between step (5) and step (6).
Preferably, being qualified when the content of silicon is 10.5%-13.5%, when the content of silicon is less than 10.5% or high
It is unqualified when 13.5%.
Preferably, when the content of silicon is less than 10.5%, the amount for the silicon for also needing to addition is calculated, and by silicon to be added
Input carries out melting.
Compared to the prior art the cocrystallized Al-Si alloy production technology of the present invention, has the advantages that：
The content of silicon is reduced to 11.7%~11.9% by the cocrystallized Al-Si alloy production technology of the present invention by 12%, can be increased
The liquidus curve temperature difference is reinforced, the speed of aluminium alloy solution solidification is reduced, liquid can get and timely supplement in process of setting, to
Decrease or even eliminate shrinkage cavity and shrinkage porosite phenomenon.It is 8~12 minutes time of inflated with nitrogen, longer than common 5 minutes, it can thoroughly drive away
The air contained inside aluminium alloy solution, is further reduced shrinkage cavity and shrinkage porosite.Content is added and accounts for all material 0.2%~0.3%
Refining agent improves the content of refining agent, can more thoroughly remove impurity elimination compared with 0.1% refining agent is added in the prior art
Matter, to further reduce shrinkage cavity and shrinkage porosite.
Specific implementation mode
The cocrystallized Al-Si alloy production technology of the present invention, includes the following steps：
(1) required material is divided into two groups by dispensing, and first group is silicon and fine aluminium, and second group is iron and alumal, and silicon
Content account for the 11.7%~11.9% of all material.The content of silicon is reduced to 11.7%~11.9% by the present invention by 12%, can
Increasing the solid-liquid phase line temperature difference, reduces the speed of aluminium alloy solution solidification, liquid can get and timely supplement in process of setting, from
And decrease or even eliminate shrinkage cavity and shrinkage porosite phenomenon.In the present invention, " content " refers both to content by weight.Meanwhile pure manganese
Fusing point it is relatively high, if directly by pure manganese be added smelting furnace, need 900 DEG C could realize that thawing, the fusing point of alumal are then low
Much, 700 DEG C it is i.e. fusible, the present invention in use alumal production cocrystallized Al-Si alloy, can reduce production needed for most
High-temperature.
(2) it puts into first group of material and is heated to 730 DEG C~750 DEG C.
(3) second group of material is put into, stirring makes it be mixed and heated to 800 DEG C~830 DEG C with first group of material.
(4) stop heating simultaneously inflated with nitrogen 8~12 minutes, the time of inflated with nitrogen is longer than common 5 minutes, can thoroughly drive away
The air contained inside aluminium alloy solution reduces cocrystallized Al-Si alloy and generates shrinkage cavity and shrinkage porosite.Content is added and accounts for all material 0.2%
~0.3% refining agent improves the content of refining agent compared with 0.1% refining agent is added in the prior art, can more thoroughly
Ground removes impurity, to further reduce shrinkage cavity and shrinkage porosite.
(5) it is stirred after skimming.In step (4) and step (5), the temperature of melt declines.
(6) heating makes melt be warming up to 680 DEG C~700 DEG C.
(7) it casts, and the temperature of holding melt is 680 DEG C~720 DEG C in casting process.
The content of silicon is reduced to 11.7%~11.9% by the present invention by 12%, can increase the solid-liquid phase line temperature difference, reduces aluminium
The speed of alloy solution solidification, liquid can get and timely supplement in process of setting, to decrease or even eliminate shrinkage cavity and contracting
Loose phenomenon.It is 8~12 minutes time of inflated with nitrogen, longer than common 5 minutes, it can thoroughly drive what aluminium alloy solution the inside was contained away
Air is further reduced shrinkage cavity and shrinkage porosite.Content is added and accounts for the refining agents of all material 0.2%~0.3%, in the prior art plus
The refining agent for entering 0.1% is compared, and the content of refining agent is improved, and can more thoroughly remove impurity, to further reduce
Shrinkage cavity and shrinkage porosite.
As a preferred option, the time of inflated with nitrogen is 10 minutes in step (4).The refining agent being added in step (4)
Content is 0.3%.
As a preferred option, further include the steps that sample examination between step (5) and step (6).When the content of silicon
It is unqualified when the content of silicon is less than 10.5% or higher than 13.5% to be qualified when 10.5%-13.5%.When containing for silicon
When amount is less than 10.5%, the amount for the silicon for also needing to addition is calculated, and silicon to be added is put into and carries out melting.
Above example is only exemplary embodiment of the present invention, is not used in the limitation present invention, protection scope of the present invention
It is defined by the claims.Those skilled in the art within the spirit and scope of the present invention, make the present invention various
Modification or equivalent replacement are also fallen within the protection scope of the present invention.
Claims (7)
1. a kind of cocrystallized Al-Si alloy production technology, which is characterized in that include the following steps：
(1) required material is divided into two groups by dispensing, and first group is silicon and fine aluminium, second group is iron and alumal, and silicon contains
Amount accounts for the 11.7%~11.9% of all material, and the content of each ingredient refers both to content by weight；
(2) it puts into first group of material and is heated to 730 DEG C~750 DEG C；
(3) second group of material is put into, stirring makes it be mixed and heated to 800 DEG C~830 DEG C with first group of material；
(4) stop heating simultaneously inflated with nitrogen 8~12 minutes, and 0.2%~0.3% refining agent that content accounts for all material is added；
(5) it is stirred after skimming：
(6) heating makes melt be warming up to 680 DEG C~700 DEG C；
(7) it casts, and the temperature of holding melt is 680 DEG C~720 DEG C in casting process.
2. cocrystallized Al-Si alloy production technology according to claim 1, which is characterized in that in the dispensing of step (1), silicon
Content account for the 11.8% of all material.
3. cocrystallized Al-Si alloy production technology according to claim 2, which is characterized in that the inflated with nitrogen in step (4)
Time is 10 minutes.
4. cocrystallized Al-Si alloy production technology according to claim 2, which is characterized in that the refining being added in step (4)
Agent content is 0.3%.
5. the cocrystallized Al-Si alloy production technology according to any one of claim 1-4, which is characterized in that in step (5)
Further include the steps that sample examination between step (6).
6. cocrystallized Al-Si alloy production technology according to claim 5, which is characterized in that when the content of silicon is 10.5%-
It is qualification when 13.5%, is unqualified when the content of silicon is less than 10.5% or higher than 13.5%.
7. cocrystallized Al-Si alloy production technology according to claim 6, which is characterized in that when the content of silicon is less than 10.5%
When, the amount for the silicon for also needing to addition is calculated, and silicon to be added is put into and carries out melting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510650406.9A CN105331855B (en) | 2015-10-09 | 2015-10-09 | A kind of cocrystallized Al-Si alloy production technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510650406.9A CN105331855B (en) | 2015-10-09 | 2015-10-09 | A kind of cocrystallized Al-Si alloy production technology |
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| Publication Number | Publication Date |
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| CN105331855A CN105331855A (en) | 2016-02-17 |
| CN105331855B true CN105331855B (en) | 2018-08-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730698A (en) * | 2005-08-03 | 2006-02-08 | 山东大学 | Aluminium-silicon-copper-magnesium pack alloy and its preparing process |
| CN100557046C (en) * | 2008-09-19 | 2009-11-04 | 清华大学 | A kind of die casting production method of refined aluminum liquid |
| CN103276261B (en) * | 2013-05-28 | 2015-04-22 | 江苏大学 | Preparation method of high-conductivity aluminum alloy |
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