CN108707790A - A kind of High Strength Cast Aluminum Alloy - Google Patents
A kind of High Strength Cast Aluminum Alloy Download PDFInfo
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- CN108707790A CN108707790A CN201810567760.9A CN201810567760A CN108707790A CN 108707790 A CN108707790 A CN 108707790A CN 201810567760 A CN201810567760 A CN 201810567760A CN 108707790 A CN108707790 A CN 108707790A
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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
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
- C22C21/04—Modified aluminium-silicon alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
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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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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
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Abstract
The invention belongs to aluminium alloy casting technology fields, especially a kind of High Strength Cast Aluminum Alloy, solves in the prior art that aluminium alloy castings dense structure's property is low, and casting is also easy to produce the problem of segregation and casting strength, toughness and the comprehensive difference of plasticity, the preparation method, includes the following steps：Si, Mg, Zn, Cu, Mn, Ti, RE, Sn are added in metal smelting-furnace, high temperature melting obtains alloy melt A, and keeps the temperature spare；After Al high temperature meltings, refining agent refining is added, obtains fine aluminium liquid B；Alloy melt A is added in fine aluminium liquid B, SiC is added and alterant is uniformly mixed, obtains aluminium alloy C；Aluminium alloy C is completed into casting at high temperature and obtains casting.The present invention effectively raises the dense structure's property of casting, avoids casting segregation problems, and gained aluminium alloy has higher intensity and hardness, wearability and good corrosion resistance, processing and good casting property, has a extensive future.
Description
Present patent application is divisional application, and parent application number is 2017101608408, and parent application day is 03 month 2017 17
Day.
Technical field
The present invention relates to aluminium alloy casting technology field more particularly to a kind of High Strength Cast Aluminum Alloys.
Background technology
Aluminium alloy is most widely used one kind non-ferrous metal structural material in industry, usually using copper, zinc, manganese, silicon, magnesium
Equal alloying elements, have been widely applied in Aeronautics and Astronautics, automobile, machine-building, ship and chemical industry.The density of fine aluminium is small
(ρ=2.7g/cm3), about the 1/3 of iron, fusing point is low (660 DEG C), and aluminium is face-centred cubic structure, therefore has very high plasticity
(δ:32~40%, ψ:70~90%), easy to process, various proximate matters, plank are can be made into, corrosion resistance is good；But fine aluminium
Intensity is very low, and annealed condition σ b values are about 8kgf/mm2, therefore should not make structural material.It is real by long-term production practices and science
It tests, for people gradually alloying element is added and carrys out reinforced aluminum with the methods of heat treatment, this has just obtained a series of aluminium alloy.
Can also have higher intensity, σ b values respectively can while the alloy of certain element formation is added the advantages that keeping fine aluminium light
Up to 24~60kgf/mm2.In this way so that its " specific strength " (the ratio σ b/ ρ of intensity and proportion) surpasses many steel alloys, become reason
The structural material thought, is widely used in machine-building, Transport Machinery, dynamic power machine and aircraft industry etc., and the fuselage of aircraft covers
Skin, compressor etc. are often manufactured with aluminium alloy, to mitigate dead weight, the welding of steel plate materials are replaced using aluminium alloy, construction weight can
Mitigate 50% or more.Therefore the aluminium alloy of high intensity has a extensive future.Number of patent application 201010248240.5 discloses one
The high tough preparation method for building aluminium alloy of kind passes through optimized alloy chemical composition, control alloy melting process and heat treatment work
Skill, obtains that impact flexibility is good, can bear the aluminium alloy of big shock loading；Number of patent application 201510274018.5 discloses one
Kind High Strength Cast Aluminum Alloy is prepared with uniform microstructure, well using Zn, Ni, Mg, Cu, Mn, Cr, Sc and Al as raw material
The matched aluminium alloy of obdurability.However as the rapid development of modern industry and science and technology, people are to cast aluminium alloy gold
Performance requirement is higher and higher, existing aluminum alloy casting technique cast the aluminium alloy castings to be formed there are still dense structure's properties it is low,
The problems such as casting is also easy to produce segregation and casting strength, toughness and plasticity are comprehensive poor, is based on above statement, the present invention proposes one
Kind High Strength Cast Aluminum Alloy.
Invention content
The purpose of the present invention is to solve disadvantages existing in the prior art, and the high-strength casting aluminium of one kind proposed closes
Gold, which solve aluminium alloy castings dense structure's property in the prior art is low, casting is also easy to produce segregation and casting strength, toughness and modeling
The problem of the comprehensive difference of property.
A kind of High Strength Cast Aluminum Alloy, includes the following steps：S1, prepare following weight percent to prepare aluminium alloy former
Material：Si2~6.5%, Mg1.6~2.8%, Zn2.5~3%, Cu2.2~2.8%, Mn0.1~0.5%, Ti0.2~0.6%,
RE0.1~0.4%, Sn0.2~0.6%, SiC0.5~1%, refining agent 0.08~0.15%, alterant 0.03~0.08%,
Surplus is Al, Si, Mg, Zn, Cu, Mn, Ti, RE, Sn of the weight percent is added in metal smelting-furnace, in high temperature 1200
It is melted at~1450 DEG C, after Melt molten, is stirred evenly with the rotating speed of 300~400r/min, obtain alloy melt A, and keep the temperature
It is spare；
S2, the Al of the weight percent is melted at 680~760 DEG C of high temperature, after melting 3~5h, is added described heavy
The refining agent of percentage is measured, 20~40min is refined, obtains fine aluminium liquid B；
S3, the alloy melt A of gained in step S1 is added in step S2 in the fine aluminium liquid B of gained, the weight hundred is added
The SiC and alterant for dividing ratio are uniformly mixed with the rotating speed high-speed stirred of 580~720r/min, obtain aluminium alloy C；
S4, at 760~800 DEG C of high temperature, the aluminium alloy C obtained in step S3 is added in centrifugal casting machine, in centrifugal force
Under the action of fill casting mold, complete casting and obtain casting, quenching and ageing treatment are carried out to casting, completion is handled up to required
High Strength Cast Aluminum Alloy.
Preferably, aluminium alloy raw material, including following components in percentage by weight are prepared in the step S1：Si3~
5.5%, Mg1.8~2.5%, Zn2.6~2.9%, Cu2.3~2.7%, Mn0.2~0.4%, Ti0.3~0.5%, RE0.2
~0.3%, Sn0.3~0.5%, SiC0.6~0.8%, refining agent 0.1~0.14%, alterant 0.04~0.07%, surplus
For Al.
Preferably, aluminium alloy raw material, including following components in percentage by weight are prepared in the step S1：Si4%,
Mg2%, Zn2.8%, Cu2.5%, Mn0.3%, Ti0.4%, RE0.3%, Sn0.4%, SiC0.7%, refining agent 0.12%,
Alterant 0.05%, surplus Al.
Preferably, the SiC refers to the nanometer materials that grain size is 1~100nm.
Preferably, the refining agent be C, NaF, NaHCO3 and Na2SiF6 compounding agent, wherein C, NaF, NaHCO3 and
The mass ratio of Na2SiF6 is 1:3~5:1~3:0.4~1.
Preferably, the alterant is one kind in sodium, sodium salt and antimony.
Preferably, the feed postition of refining agent is that refining agent is packed into injection refining tank in the step S2, and utilization is lazy
Refining agent is sprayed into molten aluminum by property gas.
Preferably, the inert gas is one kind in pure helium, pure neon and pure argon, the purity of the inert gas
More than 99.99%.
Preferably, the quenching treatment in the step S4 refers to the casting parts thermal insulation that will be cast at 760~800 DEG C of high temperature
Then 1.8~2.5h rapidly quenches in 55~85 DEG C of water, makes casting chilling, be finally cooled to room temperature.
Preferably, the ageing treatment in the step S4 includes incomplete timeliness and complete timeliness two parts, refer specifically to by
Aluminium alloy castings by quenching treatment are heated to 145~158 DEG C, keep the temperature 3~5h, then proceed to be warming up to 165~178 DEG C,
Keep the temperature 6~9h.
A kind of High Strength Cast Aluminum Alloy proposed by the present invention adds alloy member using Al as primary raw material by scientific matching
Element is kneaded, and is included micro Mn, Ti and RE in alloy raw material, can be formed infusible compound, the conduct when alloy crystallizes
Non-spontaneous nucleation plays Grain refinement, improves the intensity and plasticity of alloy, refined to Al by refining agent, effectively
The oxide slag inclusion removed the hydrogen inside molten aluminum and swum, the addition of alterant can play refining alloy tissue, further increase conjunction
The effect of the intensity and plasticity of gold, the nano SiC being added in formula have high rigidity, high-wearing feature and good self lubricity,
Elevated temperature strength is big, and alloy material is made to be uniformly dispersed, and intensity greatly improves, and is completed to casting using centrifugal casting technique in the present invention
The casting of part effectively raises the dense structure's property of casting, avoids casting segregation problems, and quenching treatment is carried out to casting,
Make casting obtain the hardening constituent dissolved to the limit to fix, ageing treatment makes oversaturated Solid solution decomposition, makes cast structure steady
Fixed, to obtain preferable tensile strength, good plasticity and toughness, preparation method proposed by the present invention is easy to operate, gained aluminium
Alloy has higher intensity and hardness, wearability and good corrosion resistance, processing and good casting property, has a extensive future.
Specific implementation mode
The present invention is made further to explain with reference to specific embodiment.
Embodiment one
A kind of High Strength Cast Aluminum Alloy proposed by the present invention, includes the following steps：S1, prepare following weight percent prepare aluminium
Alloy raw material：Si5%, Mg2%, Zn2.8%, Cu2.4%, Mn0.4%, Ti0.3%, RE0.1%, Sn0.3%,
SiC0.8%, refining agent 0.12%, sodium 0.05%, surplus Al；It is 1 that wherein refining agent, which is mass ratio,:4:2.5:0.8 C,
The compounding agent of NaF, NaHCO3 and Na2SiF6；Metal is added in Si, Mg, Zn, Cu, Mn, Ti, RE, Sn of the weight percent
In smelting furnace, is melted at 1250 DEG C of high temperature, after Melt molten, stirred evenly with the rotating speed of 380r/min, obtain alloy melt
A, and keep the temperature spare；
S2, the Al of the weight percent is melted at 720 DEG C of high temperature, after melting 4h, by the weight percent
Refining agent is packed into injection refining tank, and refining agent is sprayed into molten aluminum using helium of the purity more than 99.99%, 35min is refined, obtains
Fine aluminium liquid B；
S3, the alloy melt A of gained in step S1 is added in step S2 in the fine aluminium liquid B of gained, the weight hundred is added
The SiC and sodium for dividing the grain size of ratio to be 10nm, are uniformly mixed with the rotating speed high-speed stirred of 650r/min, obtain aluminium alloy C；
S4, at 780 DEG C of high temperature, the aluminium alloy C obtained in step S3 is added in centrifugal casting machine, in the effect of centrifugal force
Retrofilling casting mold completes casting and obtains casting, the casting parts thermal insulation 2.2h that casting is obtained, in 60 DEG C of water of then rapidly quenching,
Make casting chilling, be finally cooled to room temperature, that is, complete quenching treatment, the aluminium alloy castings Jing Guo quenching treatment are heated to 150
DEG C, 4h is kept the temperature, then proceedes to be warming up to 170 DEG C, 8h is to get required High Strength Cast Aluminum Alloy for heat preservation.
Embodiment two
A kind of High Strength Cast Aluminum Alloy proposed by the present invention, includes the following steps：S1, prepare following weight percent prepare aluminium
Alloy raw material：Si3.5%, Mg1.8%, Zn3%, Cu2.8%, Mn0.1%, Ti0.5%, RE0.3%, Sn0.2%,
SiC1%, refining agent 0.08%, antimony 0.08%, surplus Al；It is 1 that wherein refining agent, which is mass ratio,:3.5:1.5:0.6 C,
The compounding agent of NaF, NaHCO3 and Na2SiF6；Metal is added in Si, Mg, Zn, Cu, Mn, Ti, RE, Sn of the weight percent
In smelting furnace, is melted at 1400 DEG C of high temperature, after Melt molten, stirred evenly with the rotating speed of 350r/min, obtain alloy melt
A, and keep the temperature spare；
S2, the Al of the weight percent is melted at 680 DEG C of high temperature, after melting 5h, by the weight percent
Refining agent is packed into injection refining tank, and refining agent is sprayed into molten aluminum using argon gas of the purity more than 99.99%, 20min is refined, obtains
Fine aluminium liquid B；
S3, the alloy melt A of gained in step S1 is added in step S2 in the fine aluminium liquid B of gained, the weight hundred is added
The SiC and antimony for dividing the grain size of ratio to be 35nm, are uniformly mixed with the rotating speed high-speed stirred of 580r/min, obtain aluminium alloy C；
S4, at 760 DEG C of high temperature, the aluminium alloy C obtained in step S3 is added in centrifugal casting machine, in the effect of centrifugal force
Retrofilling casting mold completes casting and obtains casting, the casting parts thermal insulation 1.8h that casting is obtained, in 85 DEG C of water of then rapidly quenching,
Make casting chilling, be finally cooled to room temperature, that is, complete quenching treatment, the aluminium alloy castings Jing Guo quenching treatment are heated to 155
DEG C, 3.5h is kept the temperature, then proceedes to be warming up to 165 DEG C, 9h is to get required High Strength Cast Aluminum Alloy for heat preservation.
A kind of High Strength Cast Aluminum Alloy proposed by the present invention of embodiment three, includes the following steps：
S1, prepare following weight percent prepare aluminium alloy raw material：Si4%, Mg2.5%, Zn2.5%, Cu2.2%,
Mn0.5%, Ti0.2%, RE0.4%, Sn0.4%, SiC0.6%, refining agent 0.15%, sodium 0.03%, surplus Al；Wherein
Refining agent is that mass ratio is 1:3:1:The compounding agent of 0.5 C, NaF, NaHCO3 and Na2SiF6；By the weight percent
Si, Mg, Zn, Cu, Mn, Ti, RE, Sn are added in metal smelting-furnace, are melted at 1300 DEG C of high temperature, after Melt molten, with
The rotating speed of 400r/min stirs evenly, and obtains alloy melt A, and keeps the temperature spare；
S2, the Al of the weight percent is melted at 750 DEG C of high temperature, after melting 3.5h, by the weight percent
Refining agent be packed into injection refining tank, refining agent is sprayed into molten aluminum using helium of the purity more than 99.99%, refines 40min,
Obtain fine aluminium liquid B；
S3, the alloy melt A of gained in step S1 is added in step S2 in the fine aluminium liquid B of gained, the weight hundred is added
The SiC and sodium for dividing the grain size of ratio to be 1nm, are uniformly mixed with the rotating speed high-speed stirred of 720r/min, obtain aluminium alloy C；
S4, at 800 DEG C of high temperature, the aluminium alloy C obtained in step S3 is added in centrifugal casting machine, in the effect of centrifugal force
Retrofilling casting mold completes casting and obtains casting, the casting parts thermal insulation 2.5h that casting is obtained, in 75 DEG C of water of then rapidly quenching,
Make casting chilling, be finally cooled to room temperature, that is, complete quenching treatment, the aluminium alloy castings Jing Guo quenching treatment are heated to 145
DEG C, 5h is kept the temperature, then proceedes to be warming up to 172 DEG C, 7h is to get required High Strength Cast Aluminum Alloy for heat preservation.
A kind of example IV High Strength Cast Aluminum Alloy proposed by the present invention, includes the following steps：S1, prepare following weight hundred
That divides ratio prepares aluminium alloy raw material：Si6.5%, Mg1.6, Zn2.6%, Cu2.6%, Mn0.3%, Ti0.6%, RE0.2%,
Sn0.5%, SiC0.9%, refining agent 0.1%, sodium salt 0.06%, surplus Al；It is 1 that wherein refining agent, which is mass ratio,:4.5:3:
The compounding agent of 0.7 C, NaF, NaHCO3 and Na2SiF6；By Si, Mg, Zn, Cu, Mn, Ti, RE, Sn of the weight percent
It is added in metal smelting-furnace, is melted at 1450 DEG C of high temperature, after Melt molten, stirred evenly, obtained with the rotating speed of 320r/min
Alloy melt A, and keep the temperature spare；
S2, the Al of the weight percent is melted at 700 DEG C of high temperature, after melting 4.5h, by the weight percent
Refining agent be packed into injection refining tank, refining agent is sprayed into molten aluminum using neon of the purity more than 99.99%, refines 25min,
Obtain fine aluminium liquid B；
S3, the alloy melt A of gained in step S1 is added in step S2 in the fine aluminium liquid B of gained, the weight hundred is added
The SiC and sodium salt for dividing the grain size of ratio to be 100nm, are uniformly mixed with the rotating speed high-speed stirred of 690r/min, obtain aluminium alloy C；
S4, at 790 DEG C of high temperature, the aluminium alloy C obtained in step S3 is added in centrifugal casting machine, in the effect of centrifugal force
Retrofilling casting mold, completes casting and obtains casting, then the casting parts thermal insulation 2h that casting is obtained rapidly quenches in 55 DEG C of water, makes
Casting chilling is finally cooled to room temperature, that is, completes quenching treatment, and the aluminium alloy castings Jing Guo quenching treatment are heated to 158 DEG C,
3h is kept the temperature, then proceedes to be warming up to 165 DEG C, 7.5h is to get required High Strength Cast Aluminum Alloy for heat preservation.
A kind of High Strength Cast Aluminum Alloy proposed by the present invention of embodiment five, includes the following steps：S1, prepare following weight hundred
That divides ratio prepares aluminium alloy raw material：Si6%, Mg2.8%, Zn2.9%, Cu2.5%, Mn0.2%, Ti0.4%, RE0.3%,
Sn0.6%, SiC0.5%, refining agent 0.14%, antimony 0.04%, surplus Al；It is 1 that wherein refining agent, which is mass ratio,:5:2:1
C, the compounding agent of NaF, NaHCO3 and Na2SiF6；Gold is added in Si, Mg, Zn, Cu, Mn, Ti, RE, Sn of the weight percent
Belong in smelting furnace, melt at 1350 DEG C of high temperature, after Melt molten, stirred evenly with the rotating speed of 300r/min, it is molten to obtain alloy
Body A, and keep the temperature spare；
S2, the Al of the weight percent is melted at 760 DEG C of high temperature, after melting 3h, by the weight percent
Refining agent is packed into injection refining tank, and refining agent is sprayed into molten aluminum using argon gas of the purity more than 99.99%, 30min is refined, obtains
Fine aluminium liquid B；
S3, the alloy melt A of gained in step S1 is added in step S2 in the fine aluminium liquid B of gained, the weight hundred is added
The SiC and antimony for dividing the grain size of ratio to be 80nm, are uniformly mixed with the rotating speed high-speed stirred of 620r/min, obtain aluminium alloy C；
S4, at 770 DEG C of high temperature, the aluminium alloy C obtained in step S3 is added in centrifugal casting machine, in the effect of centrifugal force
Retrofilling casting mold completes casting and obtains casting, the casting parts thermal insulation 2.4h that casting is obtained, in 70 DEG C of water of then rapidly quenching,
Make casting chilling, be finally cooled to room temperature, that is, complete quenching treatment, the aluminium alloy castings Jing Guo quenching treatment are heated to 148
DEG C, 4.5h is kept the temperature, then proceedes to be warming up to 178 DEG C, 6h is to get required High Strength Cast Aluminum Alloy for heat preservation.
The mechanical property for testing the High Strength Cast Aluminum Alloy prepared in the embodiment of the present invention one~five respectively, obtains following knot
Fruit：
| Embodiment | One | Two | Three | Four | Five |
| Tensile strength (MPa) | 384 | 422 | 449 | 407 | 390 |
| Elongation at break (%) | 10.7 | 13.2 | 14.1 | 12.6 | 12.2 |
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, and it is any
Those familiar with the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its invents
Design is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of High Strength Cast Aluminum Alloy, which is characterized in that be made of following steps：
S1, prepare following weight percent prepare aluminium alloy raw material：Si2~6.5%, Mg1.6~2.8%, Zn2.5~
3%, Cu2.2~2.8%, Mn0.1~0.5%, Ti0.2~0.6%, RE0.1~0.4%, Sn0.2~0.6%, SiC0.5~
1%, refining agent 0.08~0.15%, alterant 0.03~0.08%, surplus Al, by Si, Mg of the weight percent,
Zn, Cu, Mn, Ti, RE, Sn are added in metal smelting-furnace, are melted at 1200~1450 DEG C of high temperature, after Melt molten, with 300
The rotating speed of~400r/min stirs evenly, and obtains alloy melt A, and keeps the temperature spare；
S2, the Al of the weight percent is melted at 680~760 DEG C of high temperature, after melting 3~5h, is added described heavy
The refining agent of percentage is measured, 20~40min is refined, obtains fine aluminium liquid B；
S3, the alloy melt A of gained in step S1 is added in step S2 in the fine aluminium liquid B of gained, the weight hundred is added
The SiC and alterant for dividing ratio are uniformly mixed with the rotating speed high-speed stirred of 580~720r/min, obtain aluminium alloy C；
S4, at 760~800 DEG C of high temperature, the aluminium alloy C obtained in step S3 is added in centrifugal casting machine, in centrifugal force
Under the action of fill casting mold, complete casting and obtain casting, quenching and ageing treatment are carried out to casting, completion is handled up to required
High Strength Cast Aluminum Alloy.
2. a kind of High Strength Cast Aluminum Alloy according to claim 1, which is characterized in that prepare aluminium alloy in the step S1
With raw material, including following components in percentage by weight：Si3~5.5%, Mg1.8~2.5%, Zn2.6~2.9%, Cu2.3~
2.7%, Mn0.2~0.4%, Ti0.3~0.5%, RE0.2~0.3%, Sn0.3~0.5%, SiC0.6~0.8%, refining
Agent 0.1~0.14%, alterant 0.04~0.07%, surplus Al.
3. a kind of High Strength Cast Aluminum Alloy according to claim 1, which is characterized in that prepare aluminium alloy in the step S1
With raw material, including following components in percentage by weight：Si4%, Mg2%, Zn2.8%, Cu2.5%, Mn0.3%, Ti0.4%,
RE0.3%, Sn0.4%, SiC0.7%, refining agent 0.12%, alterant 0.05%, surplus Al.
4. a kind of High Strength Cast Aluminum Alloy according to claim 1, which is characterized in that the SiC refer to grain size be 1~
The nanometer materials of 100nm.
5. a kind of High Strength Cast Aluminum Alloy according to claim 1, which is characterized in that the refining agent be C, NaF,
The compounding agent of NaHCO3 and Na2SiF6, the wherein mass ratio of C, NaF, NaHCO3 and Na2SiF6 are 1:3~5:1~3:0.4~
1。
6. a kind of High Strength Cast Aluminum Alloy according to claim 1, which is characterized in that the alterant be sodium, sodium salt and
One kind in antimony.
7. a kind of High Strength Cast Aluminum Alloy according to claim 1, which is characterized in that refining agent adds in the step S2
It is that refining agent is packed into injection refining tank to enter mode, and refining agent is sprayed into molten aluminum using inert gas.
8. a kind of High Strength Cast Aluminum Alloy according to any one of claim 7, which is characterized in that the inert gas
Purity for one kind in pure helium, pure neon and pure argon, the inert gas is more than 99.99%.
9. a kind of High Strength Cast Aluminum Alloy according to claim 1, which is characterized in that the quenching treatment in the step S4
Refer to the 1.8~2.5h of casting parts thermal insulation that will be cast at 760~800 DEG C of high temperature, in 55~85 DEG C of water of then rapidly quenching,
Make casting chilling, is finally cooled to room temperature.
10. a kind of High Strength Cast Aluminum Alloy according to claim 1, which is characterized in that at the timeliness in the step S4
Reason includes incomplete timeliness and complete timeliness two parts, refer specifically to the aluminium alloy castings Jing Guo quenching treatment being heated to 145~
158 DEG C, 3~5h is kept the temperature, then proceedes to be warming up to 165~178 DEG C, keeps the temperature 6~9h.
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| CN113957429A (en) * | 2021-09-09 | 2022-01-21 | 成都银河动力有限公司 | Preparation and strengthening method of aluminum alloy for piston |
| CN114941089B (en) * | 2022-04-19 | 2023-06-27 | 金源(山东)新能源科技发展有限公司 | High-strength high-conductivity Al-Zr-Si type aluminum alloy |
| CN115976372B (en) * | 2022-12-26 | 2024-03-29 | 四会市辉煌金属制品有限公司 | High-heat-conductivity high-strength die-casting aluminum alloy material and preparation method thereof |
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| CN108707790B (en) | 2020-03-10 |
| CN107034372B (en) | 2018-07-24 |
| CN107034372A (en) | 2017-08-11 |
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