CN103131917B - A kind of carbonyl compound W (CO) 6rotten high performance aluminium materials and preparation method thereof - Google Patents
A kind of carbonyl compound W (CO) 6rotten high performance aluminium materials and preparation method thereof Download PDFInfo
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- CN103131917B CN103131917B CN201110398121.2A CN201110398121A CN103131917B CN 103131917 B CN103131917 B CN 103131917B CN 201110398121 A CN201110398121 A CN 201110398121A CN 103131917 B CN103131917 B CN 103131917B
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Abstract
The invention discloses a kind of carbonyl compound W (CO)
6rotten high performance aluminium materials and preparation method thereof, by weight percentage, this alloying constituent is Cu:1.5 ~ 2.0%, Mn:0.5 ~ 0.7%, Mg:0.8 ~ 1.0%, Ni:0.3 ~ 0.5%, Si :≤1.0%, Fe :≤1.0%, carbonyl compound W (CO)
6alterant is 0.01 ~ 0.03% of total amount, and all the other are Al and inevitable trace impurity, and impurity content is: single≤0.05%, and add up to≤0.15%, aluminum alloy materials of the present invention has higher performance and the purity of Geng Gao, and preparation method is simple.
Description
Technical field
The present invention relates to a kind of aluminum alloy materials and preparation method thereof, particularly a kind of carbonyl compound W (CO)
6rotten high performance aluminium materials and preparation method thereof.
Background technology
Metamorphism greatly can improve comprehensive mechanical performance and the chemical stability index of aluminium alloy, sometimes or even subversive.Metamorphic material can be produced and be called alterant.
Alterant nearly all at present all concentrates in a kind of technique means: take aluminium as the master alloy that matrix produces containing alterant element, then when aluminium alloy smelting, master alloy is added in melt.
This process creates two in energy-conservation disadvantageous link: the founding link of the master alloy 1. containing high density alterant element, often need very high temperature (> 1000 DEG C, as Al-Ti-B, Al-RE, Al-Si, Al-Sc, Al-V, Al-Cr, Al-Mn, Al-Co, Al-Ni, Al-W, Al-Zr etc.); 2. add master alloy during aluminium alloy smelting, " dissolving " " dilution " alterant element, then cast.
Concerning aluminium alloy is produced, how said process has been equivalent to " melting-casting " link, and aluminium a large amount of in master alloy only plays the effect storing alterant element, and its energy consumed is invalid completely.
In various aluminium intermediate alloy alterant, most is representational is Al-Ti-B wire rod and aluminium-rare-earth (RE) master alloy.Along with going deep into of research, increasing element is found to have metamorphism, also just creates increasing master alloy.For aluminum alloy smelting factory, in order to be absorbed in the production of terminal alloy product, there is no need special investment and building master alloy production line, and would rather from market purchasing master alloy.So just had the factory of special production aluminium intermediate alloy, and defined industrial scale, current whole world aluminium intermediate alloy industry has reached billions of unit.
Although the matrix of master alloy is also aluminium, when producing master alloy, the process of high-melting-point element, indissoluble solution element and aluminium generation alloying is very rambunctious: the segregation of effective element, the scaling loss amount of aluminium increase and a large amount of being mixed into of impurity, all unavoidable.Require that very strict high performance alloys is produced for Light absorbing impurty, the impurity that often alterant is brought into is just enough to make Chemical Composition exceed limited field; Simultaneously, under microstate, a large amount of effective alterant element assembled still is in homojunction colony bulk state, at the temperature of molten aluminum, (< 800 DEG C) cannot dissolve completely and melt at all, the very thin rete in surface is only had to play part metamorphism due to may alloying reaction be produced with aluminium, all the other a large amount of state of aggregations are all how to add just how to exist, and thus metamorphism has a greatly reduced quality.
In actual production, frequent produced problem is that the rotten ability of alterant is unstable, the rate fluctuations scope that alterant adds is large, be not easy accurate perception addition, simultaneously as easy as rolling off a logly in the aluminium intermediate alloy process manufacturing high temperature element be mixed into harmful element, end product quality is had a significant impact.
Summary of the invention
Technical problem to be solved by this invention is, for the defect that aluminum current alloy inoculant and metamorphic mechanism exist, with carbonyl compound W (CO)
6molecular crystal fine powder is as efficient alterant, join in alloy melt with fluidized regime with protective gas, by discharging the alterant element W of atom or ionic condition with aluminium alloy melt generation chemical reaction or pyrolytic decomposition, produce CO-free radical simultaneously, Absorbable rod and to remove in melt the detrimental impurity elements such as H and O, reach efficient, the even object going bad and purify melt, realize the grain refining of matrix and metallic compound phase; And the replacement master alloy in aluminium alloy is produced, cut down the number of intermediate links, energy-saving and cost-reducing.
Technical scheme of the present invention is, a kind of carbonyl compound W (CO)
6rotten high performance aluminium materials, by weight percentage, this alloying constituent is Cu:1.5 ~ 2.0%, Mn:0.5 ~ 0.7%, Mg:0.8 ~ 1.0%, Ni:0.3 ~ 0.5%, Si :≤1.0%, Fe :≤1.0%, carbonyl compound W (CO)
6alterant is 0.01 ~ 0.03% of total amount, and all the other are Al and inevitable trace impurity, and impurity content is: single≤0.05%, adds up to≤0.15%.
Carbonyl compound W (CO)
6rotten high performance aluminium materials, carbonyl compound W (CO)
6the molecular crystal state of aggregation granularity of alterant is 30 ~ 150 orders.
3 carbonyl compound W (CO)
6the preparation method of rotten high performance aluminium materials, comprises the steps:
Step one: within the scope of above-mentioned element ratio, a selected group element and carbonyl compound W (CO)
6alterant ratio, then the alloy total amount prepared as required, extrapolate the quality of often kind of required elemental metals, establishment alloy production allocation sheet, and get the raw materials ready by allocation sheet choosing foot;
Step 2: add aluminium ingot or molten aluminum liquid in smelting furnace, heating makes it to melt completely and is incubated at 700 ~ 800 DEG C; Melting process completes in enclosed environment;
Step 3: first add the selected alloying element of step one by formula rate again, make it to dissolve completely and melt, blend melt is stirred;
Step 4: then furnace refining is carried out to above-mentioned alloy melt; In alloy melt, add refining agent, and stir, melt refining operates in enclosed environment;
Step 5: after refining slagging-off, with protective gas nitrogen, degasification operation is carried out to melt, make carbonyl compound W (CO) simultaneously
6alterant joins in alloy melt with fluidized regime with protective gas nitrogen; Stir simultaneously, alterant and alloy melt are fully reacted; Alterant adds complete, continues to pass into protective gas nitrogen complete to alterant reaction;
Step 6: to leave standstill, temperature adjustment to 700 ~ 800 DEG C, aluminium alloy is toppled over and is come out of the stove, and enters subsequent processing.
compared with prior art, the present invention has following major advantage:
(1) carbonyl compound W (CO)
6it is good that alterant has modification effect, carbonyl compound W (CO)
6inherently add with protective gas with fine powder, in high temperature aluminum, decomposite W element, the particulate making W thinner evenly, substantially increase the effect of W at aluminium alloy.
(2) dehydrogenation, purification melt effect, produces CO-free radical simultaneously, Absorbable rod and to remove in melt the detrimental impurity elements such as H and O, reaches efficient, the object of even rotten and purification melt.
(3) the replacement master alloy and in aluminium alloy is produced, avoid meaningless waste, decrease smelting link, the fusing point of energy-saving and cost-reducing W is high, and the cost preparing the master alloy of Al-W is under normal conditions very high.
Rotten reaction equation is as follows:
W (CO)
6+ e (high temperature) → W (atomic state)+C (atomic state)+O (atomic state)+CO (free radical)
W+Al (liquid) → α (Al) solution altogether → saturated solution → cooling → supersaturated solid solution altogether
W+Al (saturated solution altogether) → Al
12w+Al
5w+Al
4w+Al
3w+Al
7w
3+ Al
2w
C (atomic state)+Al (liquid) → Al
4c
3(compound)
O (atomic state)+H (molten aluminium) → H
2o (gas)
CO (free radical)+2H (molten aluminium) → H
2o (gas)+C (atomic state)
C (atomic state)+H (molten aluminium) → CH
4(gas).
Embodiment
Step one: by the selected group element of formula, by weight: this alloying constituent is Cu:1.5%, Mn:0.5%, Mg:0.8%, Ni:0.3%, carbonyl compound W (CO)
6alterant is 0.03% of total amount, and all the other are Al and inevitable trace impurity, and wherein inevitably trace impurity, Si and Fe are by the impurity brought in raw material, and impurity content is: single≤0.05%, add up to≤0.15%, Si :≤1.0%, Fe :≤1.0%; The alloy total amount of preparation is 1000kg, then the weight extrapolating often kind of required material is: Cu:15kg, Mn:5kg, Mg:8kg, Ni:3kg, W (CO)
6: 0.3kg, Al:968.7kg;
Step 2: first add aluminium ingot or molten aluminum liquid in smelting furnace, heating makes it to melt completely and is incubated at 700 ~ 800 DEG C; Melting process completes in enclosed environment;
Step 3: first add the selected alloying element of step one by formula rate again, make it to dissolve completely and melt, blend melt is stirred;
Step 4: then furnace refining is carried out to above-mentioned alloy melt; In alloy melt, add refining agent, and stir, melt refining operates in enclosed environment;
Step 5: after refining slagging-off, with protective gas nitrogen, degasification operation is carried out to melt, make carbonyl compound W (CO) simultaneously
6molecular crystal alterant (30 order) joins in alloy melt with fluidized regime with protective gas nitrogen; Stir simultaneously, alterant and alloy melt are fully reacted; Alterant adds complete, continues to pass into protective gas complete to alterant reaction.
Step 6: to leave standstill, temperature adjustment to 700 ~ 800 DEG C, aluminium alloy is toppled over and is come out of the stove, and enters subsequent processing.
embodiment 2
Step one: by the selected group element of formula, by weight: this alloying constituent is Cu:1.75%, Mn:0.6%, Mg:0.9%, Ni:0.4%, carbonyl compound W (CO)
6alterant is 0.02% of total amount, and wherein inevitably trace impurity, Si and Fe are by the impurity brought in raw material, and impurity content is: single≤0.05%, adds up to≤0.15%, Si :≤1.0%, Fe :≤1.0%; The alloy total amount of preparation is 1000kg, then the weight extrapolating often kind of required material is: Cu:17.5kg, Mn:6kg, Mg:9kg, Ni:4kg, W (CO)
6: 0.2kg, Al:963.3kg;
All the other steps with embodiment 1, wherein carbonyl compound W (CO)
6molecular crystal alterant is 90 orders.
embodiment 3
Step one: by the selected group element of formula, by weight: this alloying constituent is Cu:2.0%, Mn:0.7%, Mg:1.0%, Ni:0.5%, carbonyl compound W (CO)
6alterant is 0.01% of total amount, and all the other are Al and inevitable trace impurity, and wherein inevitably trace impurity, Si and Fe are by the impurity brought in raw material, and impurity content is: single≤0.05%, add up to≤0.15%, Si :≤1.0%, Fe :≤1.0%; The alloy total amount of preparation is 1000kg, then the weight extrapolating often kind of required material is: Cu:20kg, Mn:7kg, Mg:10kg, Ni:5kg, W (CO)
6: 0.1kg, Al:957.9kg;
All the other steps with embodiment 1, wherein carbonyl compound W (CO)
6molecular crystal alterant is 150 orders.
Claims (3)
1. a carbonyl compound W (CO)
6rotten high performance aluminium materials, it is characterized in that: by weight percentage, this alloying constituent is Cu:1.5 ~ 2.0%, Mn:0.5 ~ 0.7%, Mg:0.8 ~ 1.0%, Ni:0.3 ~ 0.5%, Si :≤1.0%, Fe :≤1.0%, carbonyl compound W (CO)
6alterant is 0.01 ~ 0.03% of total amount, and all the other are Al and inevitable trace impurity, and impurity content is: single≤0.05%, adds up to≤0.15%.
2. carbonyl compound W (CO) according to claim 1
6rotten high performance aluminium materials, is characterized in that: carbonyl compound W (CO)
6the molecular crystal state of aggregation granularity of alterant is 30 ~ 150 orders.
3. a carbonyl compound W (CO) as claimed in claim 2
6the preparation method of rotten high performance aluminium materials, is characterized in that: comprise the steps:
Step one: within the scope of above-mentioned element ratio, a selected group element and carbonyl compound W (CO)
6the ratio of alterant, then the alloy total amount prepared as required, extrapolate the quality of often kind of required elemental metals, establishment alloy production allocation sheet, and get the raw materials ready by allocation sheet choosing foot;
Step 2: add aluminium ingot or molten aluminum liquid in smelting furnace, when adding aluminium ingot, heating makes it to melt completely and is incubated at 700 ~ 800 DEG C; Be incubated at 700 ~ 800 DEG C when adding molten aluminum liquid; Melting process completes in enclosed environment;
Step 3: first add the selected alloying element of step one by formula rate again, make it to melt completely and melt, blend melt is stirred;
Step 4: then furnace refining is carried out to above-mentioned alloy melt; In alloy melt, add refining agent, and stir, melt refining operates in enclosed environment;
Step 5: after refining slagging-off, with protective gas nitrogen, degasification operation is carried out to melt, make carbonyl compound W (CO) simultaneously
6alterant joins in alloy melt with fluidized regime with protective gas nitrogen; Stir simultaneously, alterant and alloy melt are fully reacted; Alterant adds complete, continues to pass into protective gas nitrogen complete to alterant reaction;
Step 6: to leave standstill, temperature adjustment to 700 ~ 800 DEG C, aluminium alloy is toppled over and is come out of the stove, and enters subsequent processing.
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|---|---|---|---|
| CN201110398121.2A CN103131917B (en) | 2011-12-05 | 2011-12-05 | A kind of carbonyl compound W (CO) 6rotten high performance aluminium materials and preparation method thereof |
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| CN201110398121.2A CN103131917B (en) | 2011-12-05 | 2011-12-05 | A kind of carbonyl compound W (CO) 6rotten high performance aluminium materials and preparation method thereof |
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| CN103131917B true CN103131917B (en) | 2016-03-09 |
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| CN105970052B (en) * | 2016-06-29 | 2018-06-29 | 贵州华科铝材料工程技术研究有限公司 | A kind of aluminum alloy materials and its sand mould casting method for substituting QT500 heavy type car steering gears |
| CN105970010B (en) * | 2016-06-29 | 2018-09-21 | 贵州华科铝材料工程技术研究有限公司 | A kind of aluminum alloy materials and its gravity casting method substituting QT400 light-duty vehicle steering gears |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1120598A (en) * | 1994-10-12 | 1996-04-17 | 东北轻合金加工厂 | Modification method of High silicon-aluminum alloy |
| CN101532861A (en) * | 2009-04-17 | 2009-09-16 | 周岳建 | A method for manufacturing water meter housing by high strength cast aluminum alloy and a product thereof |
| CN102127667A (en) * | 2010-11-29 | 2011-07-20 | 长沙朗圣实验室设备有限公司 | Aluminium alloy section and manufacture method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010159488A (en) * | 2008-12-09 | 2010-07-22 | Sumitomo Light Metal Ind Ltd | Method for molding 2,000 series aluminum alloy material, and formed product molded by the same |
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2011
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1120598A (en) * | 1994-10-12 | 1996-04-17 | 东北轻合金加工厂 | Modification method of High silicon-aluminum alloy |
| CN101532861A (en) * | 2009-04-17 | 2009-09-16 | 周岳建 | A method for manufacturing water meter housing by high strength cast aluminum alloy and a product thereof |
| CN102127667A (en) * | 2010-11-29 | 2011-07-20 | 长沙朗圣实验室设备有限公司 | Aluminium alloy section and manufacture method thereof |
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