CN106702188B - A kind of production method for promoting AlSi12Fe aluminium alloy ingots comprehensive performances - Google Patents
A kind of production method for promoting AlSi12Fe aluminium alloy ingots comprehensive performances Download PDFInfo
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Abstract
The present invention relates to technical field of aluminum alloy technology, more particularly to a kind of production method for promoting AlSi12Fe aluminium alloy ingots comprehensive performances.Step is as follows：Melting；It skims；Molten silicon；Check fractograph；Cooling；Slagging-off；Refining；Add in alterant；Degasification；It stands；Ingot casting.For the AlSi12Fe aluminium alloy ingots comprehensive performance of the method for the present invention production through test of many times, testing result is superior to existing production method.
Description
Technical field
The present invention relates to technical field of aluminum alloy technology, more particularly to a kind of life for promoting AlSi12Fe aluminium alloy ingots comprehensive performances
Production method.
Background technology
AlSi12Fe is aluminium-Si system alloy in cast aluminium alloy gold, which has excellent casting character, and purposes is very
Extensively, for example, vehicle wiper connector etc..It is too simple to the production technology of AlSi12Fe aluminium ingots in currently available technology, it is raw
Production process becomes a mere formality, so product quality situation is accidentally preferable.
In the prior art, during the trade mark Product Process, the requirement that user uses could not be taken into full account so that later stage die casting
There are many problems in part, wherein particularly importantly the performance of the trade mark alloy can not meet the high request of different user, limitation
Application extension.
The operation of production AlSi12Fe aluminium alloy ingots, product not easy mold release, needle-shaped silicon group are carried out according to existing production method
Knit coarse, die casting product comprehensive performance is unable to reach and meets the further quality requirement of die casting user.
The content of the invention
It is of the prior art above-mentioned scarce to solve the purpose of the present invention is promoting the comprehensive performance of AlSi12Fe aluminium alloy ingots
It falls into.
In order to achieve the above object, the present invention provides a kind of producers for promoting AlSi12Fe aluminium alloy ingots comprehensive performances
Method, the production method include the whole process thrown stove from aluminium material and be melted to casting ingot.
The specific technical solution of the present invention is：
A kind of production method for promoting AlSi12Fe aluminium alloy ingots comprehensive performances, step are as follows：
（1）The wrought aluminium of mass percent 40%, alloy and 40% A00 aluminium ingots are put into smelting furnace, progress is fluxing, total molten
When a length of 5-7 is small during change, melting temperature control is 630-740 DEG C；
（2）It skims：15-20KG slag-cleaning agents are sprinkled in aluminum alloy melt surface with spade, liquid level 5-10 is gently beaten with trivet
It skims after minute, and aluminium slag is cleared out into fire door, it is impossible to stir molten aluminum with trivet；
（3）Molten silicon：Metallic silicon is added in when molten aluminum surface is without scum silica frost, is sufficiently stirred molten aluminum 3-5 minutes with trivet after addition, so
After heating of opening fire be stirred for 3-5 minutes within 10-15 minute, repeatedly 4-6 times；
（4）Molten silicon terminates, and after final temperature reaches 760-780 DEG C of one cooling of aluminium ingot of casting manually, saws a small notch,
Interrupt inspection fractograph, when fracture is fine and close, without it is siliceous apparent when, otherwise should continue to stir, aluminium ingot of cast, inspection,
Until reaching requirement.
（5）Cooling：The adjustment material that quality control is issued is added the temperature of molten silicon to be dropped to 710-730 DEG C of the temperature of refining requirement, such as
The low heating that should open fire of fruit temperature；It can also be once multiple to add cooling material that can be, to be determined according to molten aluminum ingredient in stove, but
Ensure that aluminium material is clean, definite ingredients；Later stage should be added in if you need to add silicon, iron on a small quantity in the form of intermediate alloy；
（6）Slagging-off：Add in after adjustment material according to molten aluminum surface scum number determine the input amount of slag-cleaning agent, scope exists
10-15㎏；It skims after beaing liquid level 5-10 minutes with trivet, and aluminium slag is cleared out into fire door, it is impossible to stir molten aluminum with trivet；
（7）Refining：It is divided into twice, refines for the first time：Temperature of aluminum liquid control is 720 ± 10 DEG C；Refining time is controlled 20
Minute；It skims Shi Jian≤15 minute；The control of refining agent quantity is 1.4-1.7KG/ tons.Second of refining：Temperature of aluminum liquid controls
720±10℃；Refining time was controlled at 20 minutes；It skims Shi Jian≤15 minute；The control of refining agent quantity is 1.1-1.3KG/ tons；
（8）Add in alterant：After refining, add in alterant and go bad, silicon is made mutually to refine, alterant scope control
For 1-1.5KG/ tons.
（9）Degasification：Degasification time control is 20-30 minutes, and temperature control is 700-710 DEG C, and degasification terminates aluminium ingot of casting
Grain size is detected, aluminium ingot fracture grain size is better than entering next process after being equal to 2 grades；Degassing procedure should be when having a scum silica frost
Scum silica frost is focused on fire door by degasification before terminating and is taken off totally with trivet by degasification；
（10）The refining of melting workshop section, degasification method：Refining pipe bend is extended downwardly into aluminium water, opens simultaneously nitrogen valve
Door, nitrogen output pressure is adjusted to 0.2Mpa, first by it is left-to-right or by the right side to it is left longitudinal direction refine, degasification, next from the inside to the outside
Or by outside to inside laterally refining, degasification, " well " font is formed to reach to stir in furnace inner space, does not allow to continue at some position
It stops；
（11）It stands：Time of repose 15-20 minutes, 700-720 DEG C of dwell temperature；Molten aluminum can not be stirred during standing to protect
Protect the oxide-film that molten aluminum surface is formed；
（12）Ingot casting.
Further, above-mentioned steps（3）Molten silicon step, is to add in metallic silicon in no scum silica frost；Wen Du≤720 during addition
℃；Molten aluminum was stirred at interval of 10-15 minutes 3-5 minutes；Cease fire during stirring；It is heated up to stop heating at 760-780 DEG C；It is usually whole
A molten silicon time control is 60-90 minutes, it may be necessary to be increased to 120 minutes；Silicon, the addition of iron want abundance to prevent the later stage
It adds on a small quantity.
Further, above-mentioned steps（10）Refining pipe bent-up end mouth and furnace bottom will be kept certain by refining, degassing procedure always
Distance, generally remain in apart from the height of furnace bottom 1/4；Translational speed will be at the uniform velocity when each refining, degasification in length and breadth；It to be controlled during degasification
Gao Du≤15CM that molten aluminum processed is splash.
The beneficial effects of the invention are as follows：
1st, through test of many times, testing result is superior to existing the AlSi12Fe aluminium alloy ingots comprehensive performance of the method for the present invention production
There is production method.
2nd, so that the AlSi12Fe aluminium alloy ingots produced using the method for the present invention, after die casting is carried out, product is not easy to take off
Mould phenomenon is reduced, and the product recrystallized structure phenomenon that becomes larger well is improved.
Specific embodiment
With reference to specific embodiment, the present invention is further explained.It should be understood that these embodiments are merely to illustrate this hair
Bright rather than restriction protection scope of the present invention.The improvement and tune that technical staff makes according to the present invention in practical applications
It is whole, still fall within protection scope of the present invention.
Embodiment is listed below, to illustrate the present invention.
A kind of AlSi12Fe aluminium alloy ingots, composition are expressed as with mass fraction：
Si:11.9%、Fe:0.66%、Cu:0.03%、Mn:0.21%、Mg:0.03%、Cr:0.003%、Ni:0.005%、Zn:
0.01%、Ti:0.02%、Pb:0.002%。
4th, the manufacturing process of the promotion AlSi12Fe aluminium alloy ingots comprehensive performances is as follows：
The alloying component in addition to aluminum, mainly contains the ingredient of following weight percent：
（1）The wrought aluminium of mass percent 40%, alloy and 40% A00 aluminium ingots are put into smelting furnace, progress is fluxing, total molten
During change it is a length of 7 it is small when, melting temperature control is 725 DEG C；
（2）It skims：20KG slag-cleaning agents are sprinkled in aluminum alloy melt surface with spade, liquid level is gently beaten after ten minutes with trivet
It skims, and aluminium slag is cleared out into fire door；
（3）Molten silicon：Metallic silicon is added in when molten aluminum surface is without scum silica frost, is sufficiently stirred molten aluminum 5 minutes with trivet after addition, then
Heating of opening fire is stirred for 5 minutes for 15 minutes, is repeated 6 times；
（4）Molten silicon terminates, and after final temperature reaches 773 DEG C of one coolings of aluminium ingot of casting manually, saws a small notch, interrupts
Check fractograph, fracture is fine and close, meets the requirements without apparent siliceous point.
（5）Cooling：The adjustment material that quality control is issued is added the temperature of molten silicon to be dropped to 721 DEG C of the temperature of refining requirement；
（6）Slagging-off：It adds in after adjustment material and 15 ㎏ of slag-cleaning agent is put into according to molten aluminum surface scum（Slag-cleaning agent is by upper marine rainbow light gold
Belong to the production of solvent factory, model HGJ-3）；Liquid level is beaten with trivet to skim after ten minutes, and aluminium slag is cleared out into fire door；
（7）Refining：It is divided into twice, refines for the first time：Temperature of aluminum liquid is 721 DEG C；Refining time is 20 minutes；Slag-removing time
For 15 minutes；Refining agent quantity is 30KG.Second of refining：Temperature of aluminum liquid is 718 DEG C；Refining time is 20 minutes；When skimming
Between be 15 minutes；Refining agent quantity is 24KG；（Refining agent is produced by upper marine rainbow light metal solvent factory, model HGK5-1A）
（8）Add in alterant：It after refining, adds in alterant and goes bad, alterant quantity is 17KG.（Alterant
It is produced by Jie Ya metallurgical applications Technology Co., Ltd. of Zhangjagang City, entitled al-sr alloy）
（9）Degasification：The degasification time is 30 minutes, and temperature control is 715 DEG C, and degasification terminates casting aluminium ingot and is detected crystal grain
Degree, aluminium ingot fracture grain size are 1 grade；
（10）It stands：Time of repose 20 minutes, 710 DEG C of dwell temperature；
（11）Ingot casting.
1st, chute, mold are cleared up：1. it is cleaned out first with the aluminium material on hook holder chute；Secondly with hairbrush loosening
Heat-resisting material and other sundries clean up.It is gently purged totally with tracheae after cleaning, is touched with hand, confirm free from dust on hand；
2. mold cleaning：The aluminium material of adherency is cleaned up with small crooked chisel, then purges mold with tracheae, brush mould wash fills before casting
Divide baking dies.2nd, mountain flour is swiped：Talcum powder presses 1 with pure water：After 4 ratio reconciles uniformly, chute is evenly coated in hairbrush
On, it waits 18 minutes, silicic acid paper cap above chute, the sectional baking of lower section small fire, until each section of moisture content is dried.
3rd, polish, clear up（For chute）：After drying, chute injustice, protrusion or the place of loosening are gently ground off with sand paper, are allowed to flat
It is whole；After the completion of polishing everywhere, then with hairbrush gently the talcum powder polished off is cleaned out, finally gently purged with tracheae dry
Only.4th, distribution drum cleared up, purged；5th, ingot mould cleared up, purged, swabbing, baking；6th, to ingot casting line and folded ingot
The rolling inspection of machine（Drum containing distribution, mold, operation is once）；7th, cooling water is checked；8th, mine lamp, plug are checked before casting
The preparation of the operation instruments such as head, plug sleeve, silicic acid paper, spades.9th, casting process：Cast temperature is 704 DEG C in stove, distributes drum
681 DEG C, place filter screen, ingot casting speed 12m/min.10th, before the workshop section personnel that 1. cast start ingot casting when refining for second
Preparation；2. making grain size detection before, during and after ingot casting respectively, grain size testing result is respectively level-one, level-one, two level.
Shown in following table：
By controlling the content of ferro element, product is made to be easier to demould in die casting；By being used to eutectic Si system alloy
Strontium goes bad, and silicon is made mutually to refine, and improves the mechanical property of product.
Claims (4)
1. a kind of production method for promoting AlSi12Fe aluminium alloy ingots comprehensive performances, step are as follows：（1）By mass percent 40%
Wrought aluminium, in alloy and 40% A00 aluminium ingots input smelting furnace, carry out it is fluxing, when total fusing a length of 5-7 it is small when, melting temperature control
It is made as 630-740 °C；（2）It skims：15-20kg slag-cleaning agents are sprinkled in aluminum alloy melt surface with spade, liquid level 5- is beaten with trivet
It skims after ten minutes, and aluminium slag is cleared out into fire door, it is impossible to stir molten aluminum with trivet；（3）Molten silicon：It is added in when molten aluminum surface is without scum silica frost
Metallic silicon, molten aluminum is sufficiently stirred 3-5 minutes after addition with trivet, and heating of then opening fire is stirred for 3-5 minutes for 10-15 minutes, weight
It is 4-6 times multiple；（4）Molten silicon terminates, and after final temperature reaches 760-780 °C of one cooling of aluminium ingot of casting manually, saw is one small to be cut
Mouthful, interrupt inspection fractograph, when fracture is fine and close, without it is siliceous apparent when, otherwise should continue to stir, aluminium ingot of cast, examine
It looks into, until reaching requirement；（5）Cooling：The adjustment material that quality control is issued is added the temperature of molten silicon to be dropped to the temperature 710- of refining requirement
730°C；（6）Slagging-off：Add in after adjustment material according to molten aluminum surface scum number determine the input amount of slag-cleaning agent, scope exists
10-15㎏；It skims after beaing liquid level 5-10 minutes with trivet, and aluminium slag is cleared out into fire door, it is impossible to stir molten aluminum with trivet；（7）
Refining：It is divided into twice, refines for the first time：Temperature of aluminum liquid control is 720 ± 10 °C；Refining time was controlled at 20 minutes；When skimming
Jian≤15 minute；The control of refining agent quantity is 1.4-1.7kg/ton；Second of refining：Temperature of aluminum liquid control is 720 ± 10 °C；
Refining time was controlled at 20 minutes；It skims Shi Jian≤15 minute；The control of refining agent quantity is 1.1-1.3Kg/ tons；（8）It adds in and becomes
Matter agent：It after refining, adds in alterant and goes bad, silicon is made mutually to refine, alterant scope control is 1-1.5kg/ton；（9）
Degasification：Degasification time control is 20-30 minutes, and temperature control is 700-710 °C, and degasification terminates casting aluminium ingot and is detected crystal grain
Degree, aluminium ingot fracture grain size are better than entering next process after being equal to 2 grades；Degassing procedure have during scum silica frost should before degasification terminates handle
Scum silica frost focuses on fire door by degasification and is taken off totally with trivet；（10）The refining of melting workshop section, degasification method：It is downward pipe bend will to be refined
It puts in aluminium water, opens simultaneously nitrogen valve, nitrogen output pressure is adjusted to 0.2MPa, first by left-to-right or vertical to a left side by the right side
To refining, degasification, secondly from the inside to the outside or by outside to inside laterally refining, degasification, to be formed " well " with reaching to stir in furnace inner space
Font does not allow persistently to stop at some position；（11）It stands：Time of repose 15-20 minutes, 700-720 °C of dwell temperature；It is quiet
Molten aluminum can not be stirred during putting to protect the oxide-film that molten aluminum surface is formed；（12）Ingot casting.
2. a kind of production method for promoting AlSi12Fe aluminium alloy ingots comprehensive performances according to claim 1, feature exist
In the step（3）Molten silicon step, is to add in metallic silicon in no scum silica frost；Wen Du≤720 °C during addition；At interval of 10-15 points
Clock stirring molten aluminum 3-5 minutes；Cease fire during stirring；It is heated up to stop heating at 760-780 °C；Entirely molten silicon time control is 60-
120 minutes；Silicon, the addition of iron want abundance to prevent the later stage from adding on a small quantity.
3. a kind of production method for promoting AlSi12Fe aluminium alloy ingots comprehensive performances according to claim 2, feature exist
In the entirely molten silicon time control is 60-90 minutes.
4. a kind of production method for promoting AlSi12Fe aluminium alloy ingots comprehensive performances according to claim 1, feature exist
In the step（10）Refining, degassing procedure will always will refining pipe bent-up end mouth and furnace bottom maintain a certain distance, be maintained at away from
From 1/4 height of furnace bottom；Translational speed will be at the uniform velocity when each refining, degasification in length and breadth；To be controlled during degasification Gao Du that molten aluminum splashes≤
15cm。
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| CN107937767B (en) * | 2017-12-28 | 2019-07-26 | 苏州仓松金属制品有限公司 | A kind of novel high-performance aluminum alloy materials and preparation method thereof |
| CN109097611A (en) * | 2018-08-24 | 2018-12-28 | 海门市沪海有色铸造有限公司 | A kind of aluminum melting process |
| CN110016578A (en) * | 2019-03-01 | 2019-07-16 | 江苏美多汽车配件有限公司 | A kind of aluminum melting technique for thermostat cover |
| CN115595475A (en) * | 2022-10-21 | 2023-01-13 | 无锡贺邦金属制品有限公司（Cn） | Preparation method of die-casting aluminum alloy with improved yield strength |
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| US3854934A (en) * | 1973-06-18 | 1974-12-17 | Alusuisse | Purification of molten aluminum and alloys |
| JPS52153817A (en) * | 1976-06-18 | 1977-12-21 | Masatoshi Tsuda | Flux for modification of proeutectic silicon in the high silicon aluminium alloy |
| CN101886184B (en) * | 2010-06-23 | 2012-07-25 | 中北大学 | Aluminum alloy super-purification refining method |
| CN104233020B (en) * | 2014-09-08 | 2016-04-06 | 南南铝业股份有限公司 | The purifying method of high-power radiator aluminium alloy and melt thereof |
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Address after: 201514 699 Zhen Yan Road, Zhang Yan Town, Jinshan District, Shanghai Patentee after: Shuai wing Chi New Material Group Co., Ltd. Address before: 201514 699 Zhen Yan Road, Zhang Yan Town, Jinshan District, Shanghai Patentee before: Shanghai Shuaiyichi Aluminum Alloy New Material Co., Ltd. |