CN105986136A - High-performance aluminum alloy added with rare earth element and preparation method of high-performance aluminum alloy - Google Patents
High-performance aluminum alloy added with rare earth element and preparation method of high-performance aluminum alloy Download PDFInfo
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- CN105986136A CN105986136A CN201610077443.XA CN201610077443A CN105986136A CN 105986136 A CN105986136 A CN 105986136A CN 201610077443 A CN201610077443 A CN 201610077443A CN 105986136 A CN105986136 A CN 105986136A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 33
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 43
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000000843 powder Substances 0.000 claims abstract description 35
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 6
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000005516 engineering process Methods 0.000 claims abstract description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052796 boron Inorganic materials 0.000 claims abstract description 4
- 239000011777 magnesium Substances 0.000 claims abstract description 4
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 239000010703 silicon Substances 0.000 claims abstract description 4
- 239000011701 zinc Substances 0.000 claims abstract description 4
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 4
- 239000004411 aluminium Substances 0.000 claims description 31
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 22
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 17
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 12
- 239000011812 mixed powder Substances 0.000 claims description 12
- 239000011780 sodium chloride Substances 0.000 claims description 12
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims description 12
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 239000011651 chromium Substances 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 238000007670 refining Methods 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 6
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 6
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 6
- 239000011449 brick Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 229910001610 cryolite Inorganic materials 0.000 claims description 6
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 6
- 239000012467 final product Substances 0.000 claims description 6
- 229910052748 manganese Inorganic materials 0.000 claims description 6
- 239000011572 manganese Substances 0.000 claims description 6
- 229910052700 potassium Inorganic materials 0.000 claims description 6
- 239000011591 potassium Substances 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 6
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 6
- 235000013024 sodium fluoride Nutrition 0.000 claims description 6
- 239000011775 sodium fluoride Substances 0.000 claims description 6
- 235000010344 sodium nitrate Nutrition 0.000 claims description 6
- 239000004317 sodium nitrate Substances 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 6
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 239000012459 cleaning agent Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 235000013312 flour Nutrition 0.000 claims description 3
- 238000009689 gas atomisation Methods 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- -1 hexafluoro sodium aluminate Chemical compound 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 235000007686 potassium Nutrition 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 229910001388 sodium aluminate Inorganic materials 0.000 claims description 3
- 235000002639 sodium chloride Nutrition 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 2
- 230000032683 aging Effects 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- 239000000956 alloy Substances 0.000 abstract description 8
- 229910045601 alloy Inorganic materials 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract description 2
- 238000005728 strengthening Methods 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 241000722270 Regulus Species 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000632 Alusil Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000001550 time effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a high-performance aluminum alloy added with a rare earth element. The high-performance aluminum alloy is characterized by being prepared from, by mass percent, 6.5%-7% of silicon, 0.2%-0.25% of magnesium, 0.25%-0.3% of iron, 0.01%-0.012% of boron, 0.3%-0.4% of cerium, 0.1%-0.2% of zinc, 45%-50% of waste aluminum intermediate alloy powder and the balance aluminum. Alloy compositions are optimized, the rare earth element cerium is added, and therefore the tensile strength of the alloy can be improved; and a scientific and reasonable heat treatment technology is adopted, and therefore the mechanical property, especially the high-temperature mechanical property, of the alloy can be improved. The stability of a strengthening phase can be improved, precipitation and growth of the strengthening phase can be stopped, grains can be refined, cracks can be avoided, no air hole exists inside, and the product formability and the rate of finished products are improved. The prepared aluminum alloy has the beneficial effects of being high in performance, good in weldability and formability and the like, and can be used for manufacturing an engine air cylinder cover.
Description
Technical field
The present invention relates to field of aluminum alloys, a kind of high-performance aluminium alloy adding rare earth element and preparation thereof
Method.
Background technology
Cast aluminium alloy gold utensil has that specific volume is little, intensity is high, cast form is good and processing characteristics is excellent, the coefficient of expansion
The series of advantages such as little and good fluidity, are widely used in the industries such as automobile, Aeronautics and Astronautics and household electrical appliances.
Major part Cylinder-Block, cylinder cap uses high-strength aluminum alloy to produce the most substantially the most both at home and abroad, and full aluminum closes
The material of gold, alleviates tare simultaneously, also enhances the radiating effect of electromotor, improve electromotor work
Make efficiency, and the life-span is the most longer.From the point of view of fuel-economizing, cast aluminium electromotor advantage in terms of fuel-economizing is quite subject to
People pay close attention to.Because the weight of automobile often reduces, its fuel consumption can reduce 0.6%-1%.In order to reduce fuel
Consuming, and also to reduce the motor vehicle exhaust emission pollution to atmospheric environment, alleviating automotive dead weight is a weight
The measure wanted.Therefore, automobile casting is constantly replaced by lightweight aluminium foundry goods has become development trend.It is used as car
The material of engine cylinder-body cylinder cap mainly has domestic ZL101, ZL104, ZL702A alloy and the 328.0 of the U.S.,
The A-S5U3 of France, the A4CB aluminium alloy etc. of Japan.Although the alusil alloy of the tradition trade mark is in commonly used property
Can go up and can meet use requirement, but when part is in the stress state of complexity, the most at high temperature,
The grain structure of material is thick, component segregation so that aluminium alloy cylinder lid unstable properties, easily produces heat tired
Labor, the problem such as cracking, it is unsatisfactory for the needs of engine with supercharger.As although ZL101 alloying component is simple,
But its mechanical property is the highest, it is only used for the part that requirement of strength is the highest；The thermostability of ZL104 is poor etc.,
Therefore the research and development to Cast aluminium alloy gold has important application value.
Summary of the invention
It is an object of the invention to provide a kind of high-performance aluminium alloy adding rare earth element and preparation method thereof.Logical
Cross research and prepare the aluminium alloy formula that a kind of composition proportion is scientific and reasonable, make full use of aluminium scrap bits, manufacturing cost
Low, properties of product are high, the aluminum alloy materials of light weight.
In order to realize the purpose of the present invention, the present invention is implemented by below scheme:
A kind of high-performance aluminium alloy adding rare earth element, is made up of by mass percentage following each composition: silicon
6.5-7, magnesium 0.2-0.25, ferrum 0.25-0.3, boron 0.01-0.012, cerium 0.3-0.4, zinc 0.1-0.2,
Aluminium scrap master alloyed powder 45-50, surplus are aluminum；
Described aluminium scrap master alloyed powder is prepared by the raw materials in: aluminium scrap bits 60-65, manganese 15-18,
Copper 10-12, chromium 6-8, zirconium 7-9, graphite powder 2-3, sodium chloride 1.5-2, cryolite powder 1-1.5；Preparation
Method is: aluminium scrap bits first with permanent magnet sucking-off ironwork therein, are then screened out wherein by (1) with ferrum mesh screen
Dust and sand, then with cleaning agent remove surface oil stain, be finally putting into oven for drying moisture stand-by；(2)
Aluminium scrap after being processed on surface adds in crucible electrical resistance furnace, be warming up to 850 DEG C until all melting, then lower the temperature
It is pressed into copper, manganese to when 760 DEG C-770 DEG C with bell jar, is incubated 30 minutes, continue adjusting furnace temperature to 740 DEG C
-750 DEG C, being pressed into chromium, zirconium, after stirring, insulation stands 20 minutes；(3) when furnace temperature reaches 730 DEG C,
Graphite powder, sodium chloride, cryolite powder are joined in molten metal, stands after stirring, be incubated standing 40
Minute；(4) after taking off removing dross, molten metal is poured in powder by gas-atomization equipment, be prepared as particle diameter 100
Powder below μm and get final product.
A kind of high-performance aluminium alloy adding rare earth element of the present invention, is prepared from by step in detail below:
(1) all the components in addition to aluminium scrap master alloyed powder is each made fine powder standby, by all instruments and mould
Tool is carried out and heat treatment under the conditions of 250 DEG C, standby；
(2) aluminium powder is added in crucible electrical resistance furnace, be warming up to after aluminium powder is completely melt be brought rapidly up to 820 DEG C, so
With bell jar, silica flour it is pressed at twice aluminum liquid afterwards and is gently mixed, until all reducing rapidly furnace temperature after fusing,
It is pressed into aluminium scrap master alloyed powder when 760 DEG C-780 DEG C, is incubated 40-60 minute, continue adjusting furnace temperature to 730 DEG C
-740 DEG C, being pressed into remaining residual components, after stirring, insulation stands 30 minutes；
(3) the refining agent bell jar accounting for quality of molten metal 2-3% is pressed at molten metal intermediate altitude, slowly makees circumference
And become banking motion, make molten metal uniformly roll, about 8-9 minute action time, after static 4 minutes, then lead to
Cross argon and carry out refine 6-8 minute, stand 20 minutes, then skim, sample analysis after skimming；
(4), after aluminium alloy qualified for composition being stood 10-20 minute, aluminium alloy is poured in warmed-up mould,
Take out after cooling, employing T6 Technology for Heating Processing (process conditions are: solution treatment is 500 DEG C, 5.5 hours,
Ageing Treatment is 180 DEG C, 5 hours) carry out heat treatment, finally obtain product of the present invention.
The preparation method of a kind of high-performance aluminium alloy adding rare earth element of the present invention, described refining agent by
The raw material of following weight portion is made: sodium fluoride 13-16, sodium nitrate 18-22, carbon dust 9-11, diboron trioxide
9-10, potassium fluotitanate 15-18, sodium bicarbonate 10-13, hexafluoro sodium aluminate 2-4, sodium chloride 8-10, lightweight
Refractory brick 6-8；Preparation method is: (1) is by sodium fluoride, sodium nitrate, sodium chloride, potassium fluotitanate mix homogeneously
After put in high-temperature electric resistance furnace and melt, then cooled and solidified, then be broken into 200 mesh mixed-powder A；(2) will be light
Jointly put in pulverizer with remaining residual components in addition to sodium bicarbonate after refractory brick is broken and be ground into
200 mesh mixed powder B are stand-by；(3) mixed-powder A is mixed with mixed powder B, after adding sodium bicarbonate
Put into pelletize in extruding granulator；(4) being dried in an oven 120-150 minute by granule, temperature controls
230-240 DEG C, take out after cooling and get final product.
The invention has the beneficial effects as follows: the present invention uses the element meltings such as aluminium scrap bits and manganese, copper, chromium to make aluminium scrap
Master alloyed powder, the new aluminum of Substitute For Partial, as essential element, can put forward heavy alloyed intensity and wearability, and
And use aluminium scrap bits composition, reduce production cost；The homemade refining agent of the present invention is added in heat treatment process,
Porous material is beneficial to form negative pressure, it is possible to sufficiently react with gas in molten metal, thus reaches degassing
Effect, simultaneously can separate material in regulus, and decompose impurity in slag, makes regulus dryness and loose, easily
Take off slagging-off, prevent molten metal secondary suction and oxidation.
The present invention passes through optimized alloy composition, adds rare-earth element cerium, can put forward heavy alloyed tensile strength, adopt
By scientific and reasonable Technology for Heating Processing, heavy alloyed mechanical property, especially mechanical behavior under high temperature can not only be put forward；
And the stability of hardening constituent can be improved, and stop the precipitation of hardening constituent and grow up, crystal grain thinning, prevent crackle
Occurring, inside occurs without pore, improves formed product and yield rate；The aluminium alloy that the present invention prepares has
The features such as high-performance, weldability and formability are good, can be used for making engine cylinder cap.
Detailed description of the invention
Below by instantiation, the present invention is described in detail.
A kind of high-performance aluminium alloy adding rare earth element, is made up of by mass percentage following each composition: silicon
6.5, magnesium 0.2, ferrum 0.25, boron 0.01, cerium 0.3, zinc 0.1, aluminium scrap master alloyed powder 45, surplus are
Aluminum；
Described aluminium scrap master alloyed powder is made up of the raw material of following weight portion (kilogram): aluminium scrap bits 60, manganese 15,
Copper 10, chromium 6, zirconium 7, graphite powder 2, sodium chloride 1.5, cryolite powder 1；Preparation method is: (1) will be useless
Aluminum bits, first with permanent magnet sucking-off ironwork therein, then screen out dust therein and sand with ferrum mesh screen, then
Remove the oil stain on surface with cleaning agent, be finally putting into oven for drying moisture stand-by；(2) giving up after surface being processed
Aluminum adds in crucible electrical resistance furnace, be warming up to 850 DEG C until all melting, when being then cooled to 760 DEG C-770 DEG C
Being pressed into copper, manganese with bell jar, be incubated 30 minutes, continuation adjusting furnace temperature, to 740 DEG C-750 DEG C, is pressed into chromium, zirconium,
After stirring, insulation stands 20 minutes；(3) when furnace temperature reaches 730 DEG C, by graphite powder, sodium chloride,
Cryolite powder joins in molten metal, stands after stirring, and insulation stands 40 minutes；(4) removing dross is taken off
After molten metal is poured in powder by gas-atomization equipment, be prepared as particle diameter powder below 100 μm and get final product.
A kind of high-performance aluminium alloy adding rare earth element of the present invention, is prepared from by step in detail below:
(1) all the components in addition to aluminium scrap master alloyed powder is each made fine powder standby, by all instruments and mould
Tool is carried out and heat treatment under the conditions of 250 DEG C, standby；
(2) aluminium powder is added in crucible electrical resistance furnace, be warming up to after aluminium powder is completely melt be brought rapidly up to 820 DEG C, so
With bell jar, silica flour it is pressed at twice aluminum liquid afterwards and is gently mixed, until all reducing rapidly furnace temperature after fusing,
It is pressed into aluminium scrap master alloyed powder when 760 DEG C-780 DEG C, is incubated 40 minutes, continue adjusting furnace temperature to 730 DEG C
-740 DEG C, being pressed into remaining residual components, after stirring, insulation stands 30 minutes；
(3) the refining agent bell jar accounting for quality of molten metal 3% is pressed at molten metal intermediate altitude, slowly makees circumference also
Become banking motion, make molten metal uniformly roll, about 8 minutes action time, after static 4 minutes, then pass through argon
Gas carries out refine 6 minutes, stands 20 minutes, then skims, sample analysis after skimming；
(4) after aluminium alloy qualified for composition being stood 10 minutes, aluminium alloy is poured in warmed-up mould, cooling
Rear taking-up, employing T6 Technology for Heating Processing (process conditions are: solution treatment is 500 DEG C, 5.5 hours, time
Effect is processed as 180 DEG C, 5 hours) carry out heat treatment, finally obtain product of the present invention.
The preparation method of a kind of high-performance aluminium alloy adding rare earth element of the present invention, described refining agent by
The raw material of following weight portion (kilogram) is made: sodium fluoride 13, sodium nitrate 18, carbon dust 9, diboron trioxide 9,
Potassium fluotitanate 15, sodium bicarbonate 10, hexafluoro sodium aluminate 2, sodium chloride 8, light fire brick 6；Preparation method
For: (1) melts putting into after sodium fluoride, sodium nitrate, sodium chloride, potassium fluotitanate mix homogeneously in high-temperature electric resistance furnace,
Then cooled and solidified, then it is broken into 200 mesh mixed-powder A；(2) by broken for light fire brick rear and de-carbon acid
Remaining residual components outside hydrogen sodium puts in pulverizer that to be ground into 200 mesh mixed powder B stand-by jointly；(3)
Mixed-powder A is mixed with mixed powder B, after adding sodium bicarbonate, puts into pelletize in extruding granulator；(4)
Being dried in an oven by granule 120 minutes, temperature controls, at 230-240 DEG C, take out and get final product after cooling.
Product processing of the present invention is become the standard tensile specimen of a diameter of 6mm, carries out with ZL702A type aluminium alloy
Relatively, according to GB/T228-2002 " metal material tensile testing at ambient temperature " and GB/T4338-2006 " gold
Belong to material at high temperature stretching test method " test room-temperature property and 250 DEG C at high-temperature behavior, high-temperature behavior test
20 minutes, result such as following table:
Claims (3)
1. the high-performance aluminium alloy adding rare earth element, it is characterized in that, be made up of by mass percentage following each composition: silicon 6.5-7, magnesium 0.2-0.25, ferrum 0.25-0.3, boron 0.01-0.012, cerium 0.3-0.4, zinc 0.1-0.2, aluminium scrap master alloyed powder 45-50, surplus are aluminum；
Described aluminium scrap master alloyed powder is prepared by the raw materials in: aluminium scrap bits 60-65, manganese 15-18, copper 10-12, chromium 6-8, zirconium 7-9, graphite powder 2-3, sodium chloride 1.5-2, cryolite powder 1-1.5；Preparation method is: aluminium scrap bits first with permanent magnet sucking-off ironwork therein, are then screened out dust therein and sand, then the oil stain with cleaning agent removing surface with ferrum mesh screen, are finally putting into oven for drying moisture stand-by by (1)；(2) aluminium scrap after being processed on surface adds in crucible electrical resistance furnace, be warming up to 850 DEG C until all melting, be then cooled to 760 DEG C-770 DEG C
Time be pressed into copper, manganese with bell jar, be incubated 30 minutes, continue adjusting furnace temperature to 740 DEG C-750 DEG C, be pressed into chromium, zirconium, after stirring insulation stand 20 minutes；(3) when furnace temperature reaches 730 DEG C, joining in molten metal by graphite powder, sodium chloride, cryolite powder, stand after stirring, insulation stands 40 minutes；(4) after taking off removing dross, molten metal is poured in powder by gas-atomization equipment, be prepared as particle diameter powder below 100 μm and get final product.
A kind of high-performance aluminium alloy adding rare earth element, it is characterised in that be prepared from by step in detail below:
(1) all the components in addition to aluminium scrap master alloyed powder is each made fine powder standby, all instruments and mould are carried out and heat treatment under the conditions of 250 DEG C, standby；
(2) aluminium powder is added in crucible electrical resistance furnace, it is warming up to after aluminium powder is completely melt be brought rapidly up to 820 DEG C, then with bell jar, silica flour it is pressed at twice aluminum liquid and is gently mixed, until reducing rapidly furnace temperature after all melting, it is pressed into aluminium scrap master alloyed powder when 760 DEG C-780 DEG C, is incubated 40-60 minute, continue adjusting furnace temperature to 730 DEG C-740 DEG C, being pressed into remaining residual components, after stirring, insulation stands 30 minutes；
(3) the refining agent bell jar accounting for quality of molten metal 2-3% is pressed at molten metal intermediate altitude, slowly make circumference and become banking motion, molten metal is made uniformly to roll, about 8-9 minute action time, after static 4 minutes, then carry out refine 6-8 minute by argon, stand 20 minutes, skim again, sample analysis after skimming；
(4) after aluminium alloy qualified for composition being stood 10-20 minute, aluminium alloy is poured in warmed-up mould, take out after cooling, (process conditions are: solution treatment is 500 DEG C to use T6 Technology for Heating Processing, 5.5 hour, Ageing Treatment is 180 DEG C, 5 hours) carry out heat treatment, finally obtain product of the present invention.
The preparation method of a kind of high-performance aluminium alloy adding rare earth element the most according to claim 2, it is characterized in that, described refining agent is prepared by the raw materials in: sodium fluoride 13-16, sodium nitrate 18-22, carbon dust 9-11, diboron trioxide 9-10, potassium fluotitanate 15-18, sodium bicarbonate 10-13, hexafluoro sodium aluminate 2-4, sodium chloride 8-10, light fire brick 6-8；Preparation method is: (1) melts putting into after sodium fluoride, sodium nitrate, sodium chloride, potassium fluotitanate mix homogeneously in high-temperature electric resistance furnace, then cooled and solidified, then is broken into 200 mesh mixed-powder A；(2) by jointly putting in pulverizer with remaining residual components in addition to sodium bicarbonate after broken for light fire brick, to be ground into 200 mesh mixed powder B stand-by；(3) mixed-powder A is mixed with mixed powder B, after adding sodium bicarbonate, put into pelletize in extruding granulator；(4) being dried in an oven 120-150 minute by granule, temperature controls, at 230-240 DEG C, take out and get final product after cooling.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107130129A (en) * | 2017-07-18 | 2017-09-05 | 合肥万之景门窗有限公司 | A kind of composite refiner of aluminium alloy and preparation method thereof |
| CN111519053A (en) * | 2020-05-08 | 2020-08-11 | 汪晓难 | High-performance wide-width aluminum alloy plate shape forming method |
| CN114075635A (en) * | 2020-08-10 | 2022-02-22 | 北京理工大学 | A kind of high-quality calorific value aluminum-silicon alloy powder material and preparation method thereof |
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| CN104789824A (en) * | 2014-01-16 | 2015-07-22 | 苏州昊卓新材料有限公司 | Die-casting rare earth aluminum alloy with characteristics of high fluidity and oxidability |
| CN105088026A (en) * | 2015-08-28 | 2015-11-25 | 阜阳安固锅炉压力容器制造有限公司 | Castable aluminum alloy material for cylinder cover and preparation method thereof |
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| CN104789824A (en) * | 2014-01-16 | 2015-07-22 | 苏州昊卓新材料有限公司 | Die-casting rare earth aluminum alloy with characteristics of high fluidity and oxidability |
| CN105088026A (en) * | 2015-08-28 | 2015-11-25 | 阜阳安固锅炉压力容器制造有限公司 | Castable aluminum alloy material for cylinder cover and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107130129A (en) * | 2017-07-18 | 2017-09-05 | 合肥万之景门窗有限公司 | A kind of composite refiner of aluminium alloy and preparation method thereof |
| CN111519053A (en) * | 2020-05-08 | 2020-08-11 | 汪晓难 | High-performance wide-width aluminum alloy plate shape forming method |
| CN114075635A (en) * | 2020-08-10 | 2022-02-22 | 北京理工大学 | A kind of high-quality calorific value aluminum-silicon alloy powder material and preparation method thereof |
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