CN108315576A - A kind of efficient alterant of A356 aluminium alloys and preparation method - Google Patents
A kind of efficient alterant of A356 aluminium alloys and preparation method Download PDFInfo
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- CN108315576A CN108315576A CN201810031576.2A CN201810031576A CN108315576A CN 108315576 A CN108315576 A CN 108315576A CN 201810031576 A CN201810031576 A CN 201810031576A CN 108315576 A CN108315576 A CN 108315576A
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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
- C22C1/02—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
- C22C1/06—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
- 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
- C22C21/00—Alloys based on aluminium
- C22C21/003—Alloys based on aluminium containing at least 2.6% of one or more of the elements: tin, lead, antimony, bismuth, cadmium, and titanium
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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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Abstract
The present invention relates to a kind of efficient alterants of A356 aluminium alloys and preparation method, the alterant is organized by mass percentage as Nd：2 ~ 10%, Mg：1 ~ 5%, Sb：1 ~ 5%, remaining is Al.The method for preparing alterant includes：（1）Al Nd intermediate alloys, Al Sb intermediate alloys, aluminium ingot and pure magnesium ingot are provided；（2）Intermediate alloy and magnesium ingot are pre-processed, including polishing, polishing and removal surface scale, dries and weigh after cleaning；（3）The load weighted dry intermediate alloy and magnesium ingot are heated to 730 750 DEG C of meltings in graphite crucible, and keep the temperature 5 minutes or more；（4）After intermediate alloy all fusing, stirred 10 minutes with graphite stirring rod；（5）When furnace temperature is down to 710 720 DEG C, slag-cleaning agent is put into aluminium alloy, leading to argon gas degasification to melt is refined；（6）Heat preservation stands 15 20min, removes surface scum, alloy is poured into metal die and cools down to obtain alloy.
Description
Technical field
It is smelted the invention belongs to aluminum alloy materials and manufacture field, is related to a kind of efficient alterant of A356 aluminium alloys and preparation
Method.
Background technology
Currently, it is environmentally friendly and it is energy saving be emphasis considers in automobile manufacturing field factor, automotive light weight technology has become the world
The trend of automobile industry development.Currently, automobile lightweight can be from shape, material, manufacture, design, function etc.
Lightweight is designed optimization.Have in lightweighting materials, aluminium alloy is with its low-density, excellent corrosion resistance and plasticity, in life
Producing cost, part quality, material use, manufacturing technology, mechanical performance, sustainable development etc. has other lightweighting materials
Unrivaled superiority becomes the preferred lightweighting materials in auto industry.
A356 cast aluminium alloy golds are common materials in auto industry, belong to hypoeutectic Al-Si-Mg systems alloy, casting stream
Dynamic property is preferable, and no hot cracking tendency, linear shrinkage is small, and specific strength is higher.A356 alloys before Metamorphism treatment, Si phases are in coarse sheet
Distribution, α-Al matrixes is isolated, and stress concentration caused by the tip of Si phases and corner angle, can weaken the mechanical property of matrix,
Reduce the strength of materials and service life.Therefore in production practice, need to carry out Metamorphism treatment to A356 alloys, by changing Si
The form of phase improves the mechanical property of alloy, process industrial art performance and the strength of materials etc..
Al-10Sr and Al-5Ti-1B is current most productions company for the alterant to Aluminum alloy modification, refinement, tool
There is preferable application effect.But the easy scaling loss of Sr in Al-10Sr, and be easy to increase the air-breathing tendency of aluminium alloy, cause stomata etc.
Defect.TiB in Al-5Ti-1B2Particle is easily assembled blocking, and formation is mingled with.If there are elements such as Zr, Cr, Mn in aluminium alloy, with
Ti, B element, which react " poisoning " phenomenon to be formed, can weaken rotten and thinning effect.
Rare earth element has been a hot spot of research in the effect of aluminium alloy mesometamorphism process and mechanism, by the study found that
Rare earth element nd to the metamorphisms of A356 alloys it is obvious that and the good modification effects of Nd be embodied in long-term effect and remelting
On, there is good application prospect；Sb elements are rotten to be unlikely to be burnt, and metamorphism also has long-term effect and remelting, and provides
Source is abundant, cheap.
Invention content
In order to make A356 aluminium alloys reach preferable modification effect, the present invention designs a kind of Al-Si-Mg hypoeutectics system aluminium and closes
The Al-Nd-Mg-Sb alterants of gold, after the processing of correct modification process, modification effect is better than Al-10Sr, alloy structure
Improvement but also the mechanical property of aluminium alloy increases.
The technical scheme is that：A kind of Al-Nd-Mg-Sb alterants, the alterant are organized by mass percentage as Nd
2 ~ 10%, Mg 1 ~ 5%, Sb 1 ~ 5%, remaining is Al.
Preferably, Nd contents are 3-4%, and Mg contents are 1-3%, and Sb contents are 3-5%.
One aspect of the present invention provides the preparation method of Al-Nd-Mg-Sb alterants, includes the following steps：（1）It carries
For Al-Nd intermediate alloys, Al-Sb intermediate alloys, aluminium ingot and pure magnesium ingot；（2）Intermediate alloy and magnesium ingot are pre-processed, including
Polishing, polishing and removal surface scale, dry after cleaning and weigh；（3）By the load weighted dry intermediate alloy and magnesium
Ingot is heated to 730-750 DEG C of melting in graphite crucible, and keep the temperature 5 minutes or more；（4）After intermediate alloy all fusing, use
Graphite rod stirring rod stirs 10 minutes；（5）When furnace temperature is down to 710-720 DEG C, slag-cleaning agent is put into aluminium alloy, leads to argon to melt
Gas degasification is refined；（6）Heat preservation stands 15-20min, and alloy is poured into metal die and cooled down and closed by surface scum of going out
Gold.
Preferably, in step（1）In, Al-Nd alloys are Al-30wt%Nd intermediate alloys, and Al-Sb alloys are Al-10wt%
Sb intermediate alloys.
Preferentially, in step（3）In, for melt temperature at 740 DEG C, soaking time is 15 minutes.
Preferably, in step（5）In, argon gas degasification is no less than 10min, gas flow 1-1.5m3/h。
Preferably, in step（5）The slag-cleaning agent of alloy gross mass 0.25% is added in alloy melt.
Preferably, in step（6）In, holding temperature is at 730 DEG C.
Preferably, in step（6）Before alloy molten, metal die will keep the temperature 2 hours at 350-400 DEG C.
Preferably, heating furnace is put into casting process is completed from intermediate alloy, to continue to be passed through high-purity argon guarantor to heating furnace
Shield gas prevents material oxidation scaling loss.
Specific implementation mode
Embodiment one
The mass percent of each component element in 1.Al-Nd-Mg-Sb alterant alloys：Nd 3%, Mg 2%, Sb 5%, remaining is
Al.The quality of corresponding Al-30wt%Nd, Al-10wt%Sb, magnesium ingot and aluminium ingot is calculated and weighs, polishing polishes to remove surface
Oxide layer, then ultrasonic cleaning 10 minutes in acetone soln, are dried for standby；
2. resistance furnace is heated to 750 DEG C, after temperature is stablized, aluminium ingot is put into clean graphite crucible, waits for that aluminium ingot melts completely
Afterwards, surface scum is removed, by the load weighted Al-Nd alloys of step 1；
3. after heat preservation 15 minutes, the load weighted Al-Sb alloys of step 1 are added in melt；
After 4.Al-Sb alloy meltings, 15 minutes are kept the temperature, the magnesium ingot that aluminium foil in step 1 is wrapped up is added in melt；
5. after intermediate alloy is completely melt, alloy melt is stirred 10 minutes with graphite rod；
6. when furnace temperature is down to 710 DEG C, the slag-cleaning agent of alloy gross mass 0.25% is added into melt, removes surface scum, and be passed through
High-purity argon gas refinery by de-gassing, refining time are 20 minutes；
7. heat preservation stands 15min, alloy is poured into metal die and cools down to obtain alloy by surface scum of going out；
This embodiment finally obtains Al-3Nd-2Mg-5Sb alterants, meanwhile, it is put into heating furnace from intermediate alloy and is poured into a mould to completion
Process, to continue to heating furnace be passed through high-purity argon protection gas prevent material oxidation scaling loss.
Embodiment two
The mass percent of each component element in 1.Al-Nd-Mg-Sb alterant alloys：Nd 6%, Mg 5%, Sb 1%, remaining is
Al.The quality of corresponding Al-30wt%Nd, Al-10wt%Sb, magnesium ingot and aluminium ingot is calculated and weighs, polishing polishes to remove surface
Oxide layer, then ultrasonic cleaning 10 minutes in acetone soln, are dried for standby；
2. resistance furnace is heated to 730 DEG C, after temperature is stablized, aluminium ingot is put into clean graphite crucible, waits for that aluminium ingot melts completely
Afterwards, surface scum is removed, by the load weighted Al-Nd alloys of step 1；
3. after heat preservation 15 minutes, the load weighted Al-Sb alloys of step 1 are added in melt；
After 4.Al-Sb alloy meltings, 15 minutes are kept the temperature, the magnesium ingot that aluminium foil in step 1 is wrapped up is added in melt；
5. after intermediate alloy is completely melt, alloy melt is stirred 10 minutes with graphite rod；
6. when furnace temperature is down to 700 DEG C, the slag-cleaning agent of alloy gross mass 0.25% is added into melt, removes surface scum, and be passed through
High-purity argon gas refinery by de-gassing, refining time are 10 minutes；
7. heat preservation stands 20min, alloy is poured into metal die and cools down to obtain alloy by surface scum of going out；
This embodiment finally obtains Al-6Nd-5Mg-1Sb alterants, meanwhile, it is put into heating furnace from intermediate alloy and is poured into a mould to completion
Process, to continue to heating furnace be passed through high-purity argon protection gas prevent material oxidation scaling loss.
Claims (10)
1. a kind of efficient alterant of A356 aluminium alloys and preparation method, which is characterized in that the alterant forms by mass percentage
For Nd：2 ~ 10%, Mg：1 ~ 5%, Sb：1 ~ 5%, remaining is Al.
2. alterant according to claim 1, which is characterized in that the alterant is that the form of Al-Nd-Mg-Sb alloys is deposited
.
3. alterant according to claim 1, which is characterized in that the alterant is by Al-30wt%Nd intermediate alloys, Al-
10wt%Sb intermediate alloys and pure magnesium ingot composition.
4. according to the preparation method of alterant described in claim 1-3, which is characterized in that include the following steps：
（1）Al-Nd intermediate alloys, Al-Sb intermediate alloys and pure magnesium ingot are provided；（2）Intermediate alloy and magnesium ingot are pre-processed,
Including polishing, polishing and removal surface scale, dries and weigh after cleaning；（3）By the load weighted dry intermediate alloy
And magnesium ingot is heated to 700-750 DEG C of melting in graphite crucible, and keep the temperature 5 minutes or more；（4）Wait for that intermediate alloy all melts
Afterwards, it is stirred 10 minutes with graphite rod stirring rod；（5）When furnace temperature is down to 710-720 DEG C, slag-cleaning agent, Xiang Rong are put into aluminium alloy
Body leads to argon gas degasification and is refined；（6）Time of repose 15-20min is kept the temperature, surface scum is removed, alloy is poured into metal die
Cooling obtains alloy；Preferably, in step（1）In, Al-Nd alloys are Al-30wt%Nd intermediate alloys, and Al-Sb alloys are Al-
10wt%Sb intermediate alloys.
5. the preparation method of alterant according to claim 4, which is characterized in that in step（3）In, melt temperature exists
740 DEG C, soaking time is 15 minutes.
6. the preparation method of alterant according to claim 4, which is characterized in that in step（5）In, argon gas degasification is many
In 10min, gas flow 1-1.5m3/h。
7. the preparation method of alterant according to claim 4, which is characterized in that in step（5）It is added in alloy melt
The slag-cleaning agent of alloy gross mass 0.25%.
8. the preparation method of alterant according to claim 4, which is characterized in that in step（6）In, holding temperature exists
730℃。
9. the preparation method of alterant according to claim 4, which is characterized in that in step（6）Before alloy molten, gold
2 hours will be kept the temperature at 350-400 DEG C by belonging to mold.
10. the preparation method of alterant according to claim 4, which is characterized in that from intermediate alloy be put into heating furnace to
Complete casting process, to continue to heating furnace be passed through high-purity argon protection gas prevent material oxidation scaling loss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810031576.2A CN108315576A (en) | 2018-01-12 | 2018-01-12 | A kind of efficient alterant of A356 aluminium alloys and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810031576.2A CN108315576A (en) | 2018-01-12 | 2018-01-12 | A kind of efficient alterant of A356 aluminium alloys and preparation method |
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| CN108315576A true CN108315576A (en) | 2018-07-24 |
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| CN201810031576.2A Pending CN108315576A (en) | 2018-01-12 | 2018-01-12 | A kind of efficient alterant of A356 aluminium alloys and preparation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113122739A (en) * | 2021-03-18 | 2021-07-16 | 江苏锐美汽车零部件有限公司 | Process method for improving mechanical property of A356 aluminum alloy |
| CN114752793A (en) * | 2022-04-24 | 2022-07-15 | 广东工业大学 | Aluminum alloy and preparation method and application thereof |
| DE112021000494T5 (en) | 2020-11-17 | 2022-11-03 | D.Mag (Kunshan) New Material Technology Co., Ltd | Process for producing a high-strength and high-toughness aluminum-based A356.2 composite material for the wheel hubs |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1584085A (en) * | 2004-06-11 | 2005-02-23 | 吉林大学 | Alterant for overeutectic Al-Si alloy and its treatment |
| CN101538666A (en) * | 2009-05-05 | 2009-09-23 | 中信戴卡轮毂制造股份有限公司 | Al-Sb-Y-Mg modifier for hypoeutectic Al-Si alloy and preparation process thereof |
-
2018
- 2018-01-12 CN CN201810031576.2A patent/CN108315576A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1584085A (en) * | 2004-06-11 | 2005-02-23 | 吉林大学 | Alterant for overeutectic Al-Si alloy and its treatment |
| CN101538666A (en) * | 2009-05-05 | 2009-09-23 | 中信戴卡轮毂制造股份有限公司 | Al-Sb-Y-Mg modifier for hypoeutectic Al-Si alloy and preparation process thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112021000494T5 (en) | 2020-11-17 | 2022-11-03 | D.Mag (Kunshan) New Material Technology Co., Ltd | Process for producing a high-strength and high-toughness aluminum-based A356.2 composite material for the wheel hubs |
| US11685967B2 (en) | 2020-11-17 | 2023-06-27 | D. Mag (Kunshan) New Material Technology Co., Ltd | Preparation method of high-strength and high-toughness A356.2 metal matrix composites for hub |
| DE112021000494B4 (en) | 2020-11-17 | 2024-02-29 | D.Mag (Kunshan) New Material Technology Co., Ltd | Process for producing a high-strength and high-toughness aluminum-based A356.2 composite material for the wheel hubs |
| CN113122739A (en) * | 2021-03-18 | 2021-07-16 | 江苏锐美汽车零部件有限公司 | Process method for improving mechanical property of A356 aluminum alloy |
| CN114752793A (en) * | 2022-04-24 | 2022-07-15 | 广东工业大学 | Aluminum alloy and preparation method and application thereof |
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