CN104831130A - Cylinder head aluminum alloy material added with vanadium, and preparation method thereof - Google Patents
Cylinder head aluminum alloy material added with vanadium, and preparation method thereof Download PDFInfo
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- CN104831130A CN104831130A CN201510175094.0A CN201510175094A CN104831130A CN 104831130 A CN104831130 A CN 104831130A CN 201510175094 A CN201510175094 A CN 201510175094A CN 104831130 A CN104831130 A CN 104831130A
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Abstract
The present invention discloses a cylinder head aluminum alloy material added with vanadium, wherein the material is characterized by comprising, by mass, 7-8% of silicon, 0.2-0.24% of magnesium, 0.35-0.4% of zinc, 0.2-0.3% of tin, 45-50% of waste aluminum interalloy powder, 0.6-1% of silicon carbide, 0.05-0.8% of vanadium, 0.3-0.5% of vanadium pentoxide, and the balance of aluminum. According to the present invention, the alloy component ratio is optimized, the elementary vanadium and the vanadium pentoxide are added in the formula, and the addition of the self-made refining agent is matched during the smelting process, such that the good deterioration effect is provided, the grain is refined, and the stability of the strengthening phase is increased so as to improve the aluminum alloy quality; the waste aluminum interalloy powder is adopted, such that the production cost is reduced, and the energy consumption is saved; and the product of the present invention has characteristics of no pore on the cast surface, fine grain, high light, and high strength, and meets the cylinder head manufacturing standard.
Description
Technical field
The present invention relates to field of aluminum alloys, particularly a kind of cylinder cap aluminum alloy materials adding v element and preparation method thereof.
Background technology
Cast aluminium alloy has that specific volume is little, intensity is high, cast form is good and processing characteristics is excellent, the coefficient of expansion is little and the series of advantages such as good fluidity, is widely used in the industries such as automobile, Aeronautics and Astronautics and household electrical appliances.Current domestic and international most of Cylinder-Block, cylinder cap adopt aldural to produce substantially, the material of all aluminium alloy, alleviate tare simultaneously, also enhance the radiating effect of engine, improve engine operating efficiency, and the life-span are also longer.From the angle of fuel-economizing, the advantage of cast aluminium engine in fuel-economizing is quite paid close attention to by people.Because the weight of automobile often reduces, its oil consumption can reduce 0.6%-1%.In order to reduce fuel consumption, simultaneously also in order to reduce the pollution of motor vehicle exhaust to atmospheric environment, alleviating automotive dead weight is an important measure.Therefore, automobile casting is constantly replaced by lightweight aluminium foundry goods becomes development trend.The material being used as Cylinder-Block cylinder cap mainly contains 328.0 of domestic ZL101, ZL104, ZL702A alloy and the U.S., the A-S5U3 of France, the A4CB aluminium alloy etc. of Japan.Although the aluminum silicon alloy of traditional trade mark can meet service requirements in common use properties, when part is in complicated stressed condition, often there is many weak points.Such as, the most easily there is casting crack in macro crystallization coarse grains, causes it can not give full play to the advantage of mechanical property; Resistance to elevated temperatures difference etc.Therefore to the research and development of cast aluminium alloy, there is important application value.
Summary of the invention
The object of the present invention is to provide a kind of cylinder cap aluminum alloy materials adding v element and preparation method thereof.By optimized alloy composition proportion, in formula, add vanadium metal simple substance and Vanadium Pentoxide in FLAKES, in fusion process, coordinate the interpolation of self-control refining agent, good modification effect can be played, crystal grain thinning, improves the stability of strengthening phase, thus the quality of the aluminium alloy improved.
In order to realize object of the present invention, the present invention is by following scheme implementation:
Add a cylinder cap aluminum alloy materials for v element, be made up of by mass percentage following each composition: silicon 7-8, magnesium 0.2-0.24, zinc 0.35-0.4, tin 0.2-0.3, aluminium scrap master alloyed powder 45-50, silicon carbide 0.6-1, vanadium 0.05-0.8, Vanadium Pentoxide in FLAKES 0.3-0.5, surplus are aluminium;
Described aluminium scrap master alloyed powder is made up of the raw material of following weight part: aluminium scrap bits 60-65, manganese 15-18, copper 10-12, chromium 6-8, zirconium 7-9, Graphite Powder 99 2-3, sodium-chlor 1.5-2, cryolite powder 1-1.5; Preparation method is: aluminium scrap bits are first used permanent magnet sucking-off ferrous products wherein by (1), then screens out dust wherein and sand with iron mesh screen, then with the surperficial oil stain of sanitising agent removing, finally puts into oven for drying moisture stand-by; (2) aluminium scrap after surface treatment is added in crucible electrical resistance furnace, be warming up to 850 DEG C until all melt, copper, manganese is pressed into bell jar when being then cooled to 760 DEG C-770 DEG C, be incubated 30 minutes, continue adjusting furnace temperature to 740 DEG C-750 DEG C, press-in chromium, zirconium, after stirring, insulation leaves standstill 20 minutes; (3) when furnace temperature reaches 730 DEG C, join in molten metal by Graphite Powder 99, sodium-chlor, cryolite powder, leave standstill after stirring, insulation leaves standstill 40 minutes; (4) after taking off removing dross, molten metal is poured in powder by gas-atomization equipment, be prepared into the powder of particle diameter below 100 μm and get final product.
A kind of cylinder cap aluminum alloy materials adding v element of the present invention, is prepared from by following concrete steps:
(1) all the components except aluminium scrap master alloyed powder is made fine powder separately for subsequent use, all instruments and mould are carried out and thermal treatment under 250 DEG C of conditions, for subsequent use;
(2) aluminium powder is added in crucible electrical resistance furnace, be warming up to aluminium powder and melt rear rapid temperature increases to 820 DEG C completely, then with bell jar silica flour be pressed into aluminium liquid at twice and stir gently, until reduce furnace temperature rapidly after all melting, 760 DEG C-780 DEG C time, be pressed into aluminium scrap master alloyed powder, insulation 40-60 minute, continue adjusting furnace temperature to 730 DEG C-740 DEG C, be pressed into all the other remaining components, after stirring, insulation leaves standstill 30 minutes;
(3) the refining agent bell jar press-in molten metal intermediate altitude place of quality of molten metal 2-3% will be accounted for, slowly make circumference and become banking motion, molten metal is evenly rolled, action time is about 7-9 minute, after static 5 minutes, then carry out refining 6-8 minute by argon gas, leave standstill 20 minutes, skim again, sampling analysis after skimming;
(4) after aluminium alloy qualified for composition being left standstill 10-20 minute, aluminium alloy is poured in the mould of preheating, take out after cooling, (processing condition are: solution treatment is 500 DEG C to adopt T6 thermal treatment process, 5.5 hour, ageing treatment is 180 DEG C, 5 hours) heat-treat, finally obtain product of the present invention.
A kind of preparation method adding the cylinder cap aluminum alloy materials of v element of the present invention, described refining agent is made up of the raw material of following weight part: Sodium Fluoride 13-16, SODIUMNITRATE 18-22, carbon dust 9-11, boron trioxide 9-10, potassium fluotitanate 15-18, sodium bicarbonate 10-13, hexafluoro sodium aluminate 2-4, sodium-chlor 8-10, light fire brick 6-8; Preparation method is: (1) is put into high-temperature electric resistance furnace after Sodium Fluoride, SODIUMNITRATE, sodium-chlor, potassium fluotitanate being mixed and melted, then cooled and solidified, then is broken into 200 order mixed powder A; (2) by jointly putting into pulverizer after light fire brick fragmentation with all the other remaining components except sodium bicarbonate, to be ground into 200 order mixed powder B stand-by; (3) mixed powder A is mixed with mixed powder B, after adding sodium bicarbonate, put into extruding granulator granulation; (4) by particle dry 120-150 minute in an oven, temperature controls at 230-240 DEG C, cools rear taking-up and get final product.
The invention has the beneficial effects as follows: the present invention is optimized alloy composition proportion first, vanadium metal simple substance and Vanadium Pentoxide in FLAKES is added in formula, the interpolation of self-control refining agent is coordinated in fusion process, good modification effect can be played, crystal grain thinning, improve the stability of strengthening phase, thus the quality of the aluminium alloy improved; Simultaneously refining agent is porous material, is beneficial to formation negative pressure, can react by gas fully and in molten metal, thus reach degassed effect, and safety non-toxic; Secondly the present invention adopts aluminium scrap master alloyed powder as main raw material, can put forward heavy alloyed intensity and wear resistance, and uses aluminium scrap bits composition, reduces production cost; Product cast(ing) surface pore-free of the present invention, crystal grain is fine and closely woven, and light weight intensity is high, reaches cylinder cap manufacturer's standard.
Embodiment
Below by specific examples, the present invention is described in detail.
Add a cylinder cap aluminum alloy materials for v element, be made up of by mass percentage following each composition: silicon 7, magnesium 0.2, zinc 0.35, tin 0.2, aluminium scrap master alloyed powder 45, silicon carbide 0.6, vanadium 0.05, Vanadium Pentoxide in FLAKES 0.3, surplus are aluminium;
Described aluminium scrap master alloyed powder is made up of the raw material of following weight part (kilogram): aluminium scrap bits 60, manganese 15, copper 10, chromium 6, zirconium 7, Graphite Powder 99 2, sodium-chlor 1.5, cryolite powder 1; Preparation method is: aluminium scrap bits are first used permanent magnet sucking-off ferrous products wherein by (1), then screens out dust wherein and sand with iron mesh screen, then with the surperficial oil stain of sanitising agent removing, finally puts into oven for drying moisture stand-by; (2) aluminium scrap after surface treatment is added in crucible electrical resistance furnace, be warming up to 850 DEG C until all melt, copper, manganese is pressed into bell jar when being then cooled to 760 DEG C-770 DEG C, be incubated 30 minutes, continue adjusting furnace temperature to 740 DEG C-750 DEG C, press-in chromium, zirconium, after stirring, insulation leaves standstill 20 minutes; (3) when furnace temperature reaches 730 DEG C, join in molten metal by Graphite Powder 99, sodium-chlor, cryolite powder, leave standstill after stirring, insulation leaves standstill 40 minutes; (4) after taking off removing dross, molten metal is poured in powder by gas-atomization equipment, be prepared into the powder of particle diameter below 100 μm and get final product.
A kind of cylinder cap aluminum alloy materials adding v element of the present invention, is prepared from by following concrete steps:
(1) all the components except aluminium scrap master alloyed powder is made fine powder separately for subsequent use, all instruments and mould are carried out and thermal treatment under 250 DEG C of conditions, for subsequent use;
(2) aluminium powder is added in crucible electrical resistance furnace, be warming up to aluminium powder and melt rear rapid temperature increases to 820 DEG C completely, then with bell jar silica flour be pressed into aluminium liquid at twice and stir gently, until reduce furnace temperature rapidly after all melting, 760 DEG C-780 DEG C time, be pressed into aluminium scrap master alloyed powder, be incubated 40 minutes, continuation adjusting furnace temperature to 730 DEG C-740 DEG C, be pressed into all the other remaining components, after stirring, insulation leaves standstill 30 minutes;
(3) the refining agent bell jar press-in molten metal intermediate altitude place of quality of molten metal 3% will be accounted for, slowly make circumference and become banking motion, molten metal is evenly rolled, about 7 minutes action time, after static 5 minutes, then carry out refining 6 minutes by argon gas, leave standstill 20 minutes, skim again, sampling analysis after skimming;
(4) after aluminium alloy qualified for composition being left standstill 10 minutes, aluminium alloy is poured in the mould of preheating, take out after cooling, (processing condition are: solution treatment is 500 DEG C to adopt T6 thermal treatment process, 5.5 hour, ageing treatment is 180 DEG C, 5 hours) heat-treat, finally obtain product of the present invention.
A kind of preparation method adding the cylinder cap aluminum alloy materials of v element of the present invention, described refining agent is made up of the raw material of following weight part (kilogram): Sodium Fluoride 13, SODIUMNITRATE 18, carbon dust 9, boron trioxide 9, potassium fluotitanate 15, sodium bicarbonate 10, hexafluoro sodium aluminate 2, sodium-chlor 8, light fire brick 6; Preparation method is: (1) is put into high-temperature electric resistance furnace after Sodium Fluoride, SODIUMNITRATE, sodium-chlor, potassium fluotitanate being mixed and melted, then cooled and solidified, then is broken into 200 order mixed powder A; (2) by jointly putting into pulverizer after light fire brick fragmentation with all the other remaining components except sodium bicarbonate, to be ground into 200 order mixed powder B stand-by; (3) mixed powder A is mixed with mixed powder B, after adding sodium bicarbonate, put into extruding granulator granulation; (4) by particle dry 120 minutes in an oven, temperature controls at 230-240 DEG C, taking-up and get final product after cooling.
Diameter is become by Product processing of the present invention to be the standard tensile specimen of 6mm, compare with ZL702A type aluminium alloy, the high-temperature behavior at room-temperature property and 250 DEG C is tested according to GB/T228-2002 " metallic substance tensile testing at ambient temperature " and GB/T4338-2006 " Metal Materials At High Temperature stretching test method ", high-temperature behavior tests 20 minutes, and result is as following table:
Claims (3)
1. one kind is added the cylinder cap aluminum alloy materials of v element, it is characterized in that, be made up of by mass percentage following each composition: silicon 7-8, magnesium 0.2-0.24, zinc 0.35-0.4, tin 0.2-0.3, aluminium scrap master alloyed powder 45-50, silicon carbide 0.6-1, vanadium 0.05-0.8, Vanadium Pentoxide in FLAKES 0.3-0.5, surplus are aluminium;
Described aluminium scrap master alloyed powder is made up of the raw material of following weight part: aluminium scrap bits 60-65, manganese 15-18, copper 10-12, chromium 6-8, zirconium 7-9, Graphite Powder 99 2-3, sodium-chlor 1.5-2, cryolite powder 1-1.5; Preparation method is: aluminium scrap bits are first used permanent magnet sucking-off ferrous products wherein by (1), then screens out dust wherein and sand with iron mesh screen, then with the surperficial oil stain of sanitising agent removing, finally puts into oven for drying moisture stand-by; (2) aluminium scrap after surface treatment is added in crucible electrical resistance furnace, be warming up to 850 DEG C until all melt, copper, manganese is pressed into bell jar when being then cooled to 760 DEG C-770 DEG C, be incubated 30 minutes, continue adjusting furnace temperature to 740 DEG C-750 DEG C, press-in chromium, zirconium, after stirring, insulation leaves standstill 20 minutes; (3) when furnace temperature reaches 730 DEG C, join in molten metal by Graphite Powder 99, sodium-chlor, cryolite powder, leave standstill after stirring, insulation leaves standstill 40 minutes; (4) after taking off removing dross, molten metal is poured in powder by gas-atomization equipment, be prepared into the powder of particle diameter below 100 μm and get final product.
2. a kind of cylinder cap aluminum alloy materials adding v element according to claim 1, is characterized in that, be prepared from by following concrete steps:
(1) all the components except aluminium scrap master alloyed powder is made fine powder separately for subsequent use, all instruments and mould are carried out and thermal treatment under 250 DEG C of conditions, for subsequent use;
(2) aluminium powder is added in crucible electrical resistance furnace, be warming up to aluminium powder and melt rear rapid temperature increases to 820 DEG C completely, then with bell jar silica flour be pressed into aluminium liquid at twice and stir gently, until reduce furnace temperature rapidly after all melting, 760 DEG C-780 DEG C time, be pressed into aluminium scrap master alloyed powder, insulation 40-60 minute, continue adjusting furnace temperature to 730 DEG C-740 DEG C, be pressed into all the other remaining components, after stirring, insulation leaves standstill 30 minutes;
(3) the refining agent bell jar press-in molten metal intermediate altitude place of quality of molten metal 2-3% will be accounted for, slowly make circumference and become banking motion, molten metal is evenly rolled, action time is about 7-9 minute, after static 5 minutes, then carry out refining 6-8 minute by argon gas, leave standstill 20 minutes, skim again, sampling analysis after skimming;
(4) after aluminium alloy qualified for composition being left standstill 10-20 minute, aluminium alloy is poured in the mould of preheating, take out after cooling, (processing condition are: solution treatment is 500 DEG C to adopt T6 thermal treatment process, 5.5 hour, ageing treatment is 180 DEG C, 5 hours) heat-treat, finally obtain product of the present invention.
3. a kind of preparation method adding the cylinder cap aluminum alloy materials of v element according to claim 2, it is characterized in that, described refining agent is made up of the raw material of following weight part: Sodium Fluoride 13-16, SODIUMNITRATE 18-22, carbon dust 9-11, boron trioxide 9-10, potassium fluotitanate 15-18, sodium bicarbonate 10-13, hexafluoro sodium aluminate 2-4, sodium-chlor 8-10, light fire brick 6-8; Preparation method is: (1) is put into high-temperature electric resistance furnace after Sodium Fluoride, SODIUMNITRATE, sodium-chlor, potassium fluotitanate being mixed and melted, then cooled and solidified, then is broken into 200 order mixed powder A; (2) by jointly putting into pulverizer after light fire brick fragmentation with all the other remaining components except sodium bicarbonate, to be ground into 200 order mixed powder B stand-by; (3) mixed powder A is mixed with mixed powder B, after adding sodium bicarbonate, put into extruding granulator granulation; (4) by particle dry 120-150 minute in an oven, temperature controls at 230-240 DEG C, cools rear taking-up and get final product.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103421991A (en) * | 2013-09-04 | 2013-12-04 | 安徽江淮汽车股份有限公司 | Composite metamorphic cast aluminum alloy and preparation method and application thereof |
| CN103924132A (en) * | 2014-03-13 | 2014-07-16 | 淮北银丰铝业有限公司 | Preparation method of high corrosion resistant and high wear resistant aluminium alloy profile for engine cylinder cover |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103421991A (en) * | 2013-09-04 | 2013-12-04 | 安徽江淮汽车股份有限公司 | Composite metamorphic cast aluminum alloy and preparation method and application thereof |
| CN103924132A (en) * | 2014-03-13 | 2014-07-16 | 淮北银丰铝业有限公司 | Preparation method of high corrosion resistant and high wear resistant aluminium alloy profile for engine cylinder cover |
Non-Patent Citations (1)
| Title |
|---|
| 李元元: "《新型材料与科学技术-金属材料卷》", 30 September 2012, 华南理工大学出版社 * |
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Application publication date: 20150812 |