CN107034394A - A kind of production method of lifting AlSi12Cu aluminium alloy ingots combination properties - Google Patents
A kind of production method of lifting AlSi12Cu aluminium alloy ingots combination properties Download PDFInfo
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- CN107034394A CN107034394A CN201510407116.1A CN201510407116A CN107034394A CN 107034394 A CN107034394 A CN 107034394A CN 201510407116 A CN201510407116 A CN 201510407116A CN 107034394 A CN107034394 A CN 107034394A
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Abstract
The present invention relates to technical field of aluminum alloy technology, more particularly to a kind of production method of lifting AlSi12Cu aluminium alloy ingots combination properties.Step is as follows：Melting；Skim；Molten silicon；Check fractograph；Cooling；Slagging-off；Refining；Add alterant；Degasification；Stand；Ingot casting.The AlSi12Cu aluminium alloy ingots combination property of the inventive method production is through test of many times, and 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 production method of lifting AlSi12Cu aluminium alloy ingots combination properties.
Background technology
AlSi12Cu is aluminium-Si system alloy in cast aluminium alloy gold, and the trade mark alloy has excellent casting character, had many uses general, such as, vehicle wiper joint etc..Excessively simple to the production technology of AlSi12Cu aluminium ingots in currently available technology, production process becomes a mere formality, so product quality situation is accidentally preferable.
In the prior art during the trade mark Product Process, the characteristics of consumer products could not being taken into full account, so that the defective products that many intensity do not reach requirement occurs in later stage die casting, the product qualified rate lifting of user is restricted, and the application extension of such aluminium ingot manufacturer is also restrained.
The operation of production AlSi12Cu aluminium alloy ingots is carried out according to existing production method, product not easy mold release, coarse grains, die casting product combination property are unable to reach and met the further quality requirement of die casting user.
The content of the invention
The purpose of the present invention is the combination property for lifting AlSi12Cu aluminium alloy ingots, to solve drawbacks described above of the prior art.
To realize object above, the invention provides a kind of production method of lifting AlSi12Cu aluminium alloy ingots combination properties, the production method includes throwing the whole process that stove is melted to casting ingot from aluminium material.
The present invention concrete technical scheme be：
A kind of production method of lifting AlSi12Cu aluminium alloy ingots combination properties, step is as follows：
（1）Will be in the wrought aluminium of mass percent 80% and ladle refining smelting furnace, progress is fluxing, a length of 5-7 hours during total fusing, and melting temperature control is 630-740 DEG C；
（2）Skim：15-20KG slag-cleaning agents are sprinkled in aluminum alloy melt surface with spade, liquid level is gently beaten with trivet and is skimmed after 5-10 minutes, and aluminium slag is cleared out into fire door, it is impossible to aluminium liquid are stirred with trivet；
（3）Molten silicon：Metallic silicon is added when aluminium liquid surface is without scum silica frost, aluminium liquid is sufficiently stirred for trivet after addition 3-5 minutes, heating of then opening fire is stirred for 3-5 minutes for 10-15 minute, repeatedly 4-6 times；
（4）Molten silicon terminates, and final temperature reaches 760-780 DEG C manually after the cooling of casting aluminium ingot one, saws a small otch, interrupts inspection fractograph, during when fracture is fine and close, without substantially siliceous, otherwise should continue to stir, aluminium ingot of cast, check, up to reaching requirement.
（5）Cooling：Plus the temperature of molten silicon is dropped to 710-730 DEG C of the temperature that refining is required by the adjustment material that QC is issued, if the low heating that should open fire of temperature；Plus it can also be once multiple that cooling material, which can be, be determined according to aluminium liquid composition in stove, but to ensure that aluminium material is clean, definite ingredients；Later stage need to such as be added silicon, manganese on a small quantity and should be added in the form of intermediate alloy；
（6）Slagging-off：Add after adjustment material according to aluminium liquid surface scum number determine the input amount of slag-cleaning agent, scope is in 10-15 ㎏；Skimmed after beaing liquid level 5-10 minutes with trivet, and aluminium slag is cleared out into fire door, it is impossible to stir aluminium liquid 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 was controlled at 20 minutes；Skim Shi Jian≤15 minute；The control of refining agent quantity is 1.4-1.7KG/ tons.Second of refining：Temperature of aluminum liquid control is 720 ± 10 DEG C；Refining time was controlled at 20 minutes；Skim Shi Jian≤15 minute；The control of refining agent quantity is 1.1-1.3KG/ tons；
（8）Add alterant：After refining terminates, add alterant and gone bad, silicon is mutually refined, alterant scope control is 1-1.5KG/ tons.
（9）Degasification：Degasification time control is 20-30 minutes, and temperature control is 700-710 DEG C, and degasification terminates casting aluminium ingot and carries out detection grain size, and aluminium ingot fracture grain size, which is better than being equal to after 2 grades, enters next process；Degassing procedure, which has, should focus on fire door by degasification scum silica frost before degasification terminates during scum silica frost and taken off totally with trivet；
（10）The refining of melting workshop section, degasification method：Refining pipe bend is extended downwardly into aluminium water, nitrogen valve is opened simultaneously, 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, secondly 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, is persistently stopped not in some position；
（11）Stand：Time of repose 15-20 minutes, 700-720 DEG C of dwell temperature；Aluminium liquid can not be stirred during standing to protect the oxide-film that aluminium liquid surface is formed；
（12）Ingot casting.
Further, above-mentioned steps（3）Molten silicon step, is to add metallic silicon when without scum silica frost；Wen Du≤720 DEG C during addition；Aluminium liquid 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；Generally entirely molten silicon time control is 60-90 minutes, it may be necessary to increased to 120 minutes；Silicon, the addition of manganese want abundance to prevent the later stage from adding on a small quantity.
Further, above-mentioned steps（10）Refining, degassing procedure all the time will maintain a certain distance refining pipe bent-up end mouthful with furnace bottom, 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；Gao Du≤the 15CM that control aluminium liquid to splash during degasification.
The beneficial effects of the invention are as follows：
1st, the AlSi12Cu aluminium alloy ingots combination property of the inventive method production is through test of many times, and testing result is superior to existing production method.
2nd, the AlSi12Cu aluminium alloy ingots produced using the inventive method is caused, after die casting is carried out, the not easy mold release phenomenon of product is reduced, and product recrystallized structure becomes big phenomenon and well improved.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention, rather than limit protection scope of the present invention.The modifications and adaptations that technical staff makes according to the present invention in actual applications, still fall within protection scope of the present invention.
Embodiment is listed below, to illustrate the present invention.
A kind of AlSi12Cu aluminium alloy ingots, its composition is expressed as with mass fraction：
Si:12.49%、Fe:0.62%、Cu:0.03%、Mn:0.21%、Mg:0.18%、Cr:0.04%、Ni:0.02%、Zn:0.32%、Ti:0.03%、Pb:0.01%、Sn:0.0006%。
4th, the manufacturing process of the lifting AlSi12Cu aluminium alloy ingots combination properties is as follows：
The alloying component in addition to aluminum, mainly contains the composition of following percentage by weight：
（1）Will be in the wrought aluminium of mass percent 80% and ladle refining smelting furnace, progress is fluxing, a length of 7 hours during total fusing, and melting temperature control is 725 DEG C；
（2）Skim：20KG slag-cleaning agents are sprinkled in aluminum alloy melt surface with spade, liquid level is gently beaten with trivet and is skimmed after 10 minutes, and aluminium slag is cleared out into fire door；
（3）Molten silicon：Metallic silicon is added when aluminium liquid surface is without scum silica frost, aluminium liquid is sufficiently stirred for trivet after addition 5 minutes, heating of then opening fire is stirred for 5 minutes for 15 minutes, is repeated 6 times；
（4）Molten silicon terminates, and final temperature is reached after 773 DEG C of one coolings of aluminium ingot of casting manually, saws a small otch, interrupts inspection fractograph, and fracture is fine and close, met the requirements without substantially siliceous point.
（5）Cooling：Plus the temperature of molten silicon is dropped to 721 DEG C of the temperature that refining is required by the adjustment material that QC is issued；
（6）Slagging-off：The ㎏ of slag-cleaning agent 15 is put into according to aluminium liquid surface scum after adding adjustment material（Slag-cleaning agent is produced by upper marine rainbow light metal solvent factory, model HGJ-3）；Skimmed after beaing liquid level 10 minutes with trivet, 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 is 15 minutes；Refining agent quantity is 30KG.Second of refining：Temperature of aluminum liquid is 718 DEG C；Refining time is 20 minutes；Slag-removing time is 15 minutes；Refining agent quantity is 24KG；（Refining agent is produced by upper marine rainbow light metal solvent factory, model HGK5-1A）
（8）Add alterant：After refining terminates, add alterant and gone bad, alterant quantity is 17KG.（Alterant 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 carries out detection grain size, and aluminium ingot fracture grain size is 2 grades；
（10）Stand：Time of repose 20 minutes, 710 DEG C of dwell temperature；
（11）Ingot casting.
1 、Clear up chute, mould：1. cleaned out first with the aluminium material on hook holder chute；Secondly the exotic material and other debris of loosening are cleaned out with hairbrush.Gently purged totally, touched with hand with tracheae after cleaning, confirm free from dust on hand；2. mold cleaning：The aluminium material of adhesion is cleaned out with small crooked chisel, then mould, brush mould wash, abundant baking dies before casting are purged with tracheae.2 、Brush talcum powder：Talcum powder presses 1 with pure water：After 4 ratio reconciles uniformly, it is evenly coated on chute, is waited 18 minutes with hairbrush, silicic acid paper cap above chute, the lower section sectional baking of small fire, until each section of moisture content drying.3 、Polishing, cleaning（For chute）：After drying, chute injustice, place that is raised or loosening gently are ground off with sand paper, are allowed to smooth；After the completion of polishing everywhere, then with hairbrush gently the talcum powder polished off is cleaned out, finally gently purged with tracheae clean.4 、Distribution drum is cleared up, purged；5 、Ingot mould is cleared up, purged, swabbing, baking；6 、Rolling inspection to ingot casting line and folded ingot machine（Drum containing distribution, mould, operation is once）；7 、Cooling water is checked；8 、The preparation of the operation instruments such as mine lamp, chock plug, plug sleeve, silicic acid paper, spades is checked before casting.9 、Casting process：Cast temperature is 704 DEG C in stove, distributes 681 DEG C of drum, places screen pack, ingot casting speed is 12m/min.10th, 1. casting workshop section personnel start preparation before ingot casting when refining for second；2. grain size detection is made before, during and after ingot casting respectively, grain size testing result is respectively two grades, one-level, one-level.
Shown in following table：
By controlling the content of ferro element, product is set to be easier to the demoulding in die casting；By rotten using strontium to eutectic Si system alloy, silicon is mutually refined, improve the mechanical property of product.
Claims (4)
1. a kind of production method of lifting AlSi12Cu aluminium alloy ingots combination properties, step is as follows：
（1）Will be in the wrought aluminium of mass percent 80% and ladle refining smelting furnace, progress is fluxing, a length of 5-7 hours during total fusing, and melting temperature control is 630-740 DEG C；
（2）Skim：15-20KG slag-cleaning agents are sprinkled in aluminum alloy melt surface with spade, are skimmed after beaing liquid level 5-10 minutes with trivet, and aluminium slag is cleared out into fire door, it is impossible to aluminium liquid are stirred with trivet；
（3）Molten silicon：Metallic silicon is added when aluminium liquid surface is without scum silica frost, aluminium liquid is sufficiently stirred for trivet after addition 3-5 minutes, heating of then opening fire is stirred for 3-5 minutes for 10-15 minute, repeatedly 4-6 times；
（4）Molten silicon terminates, and final temperature reaches 760-780 DEG C manually after the cooling of casting aluminium ingot one, saws a small otch, interrupts inspection fractograph, during when fracture is fine and close, without substantially siliceous, otherwise should continue to stir, aluminium ingot of cast, check, up to reaching requirement；
（5）Cooling：Plus the temperature of molten silicon is dropped to 710-730 DEG C of the temperature that refining is required by the adjustment material that QC is issued；
（6）Slagging-off：Add after adjustment material according to aluminium liquid surface scum number determine the input amount of slag-cleaning agent, scope is in 10-15 ㎏；Skimmed after beaing liquid level 5-10 minutes with trivet, and aluminium slag is cleared out into fire door, it is impossible to stir aluminium liquid 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 was controlled at 20 minutes；Skim Shi Jian≤15 minute；The control of refining agent quantity is 1.4-1.7KG/ tons；
Second of refining：Temperature of aluminum liquid control is 720 ± 10 DEG C；Refining time was controlled at 20 minutes；Skim Shi Jian≤15 minute；The control of refining agent quantity is 1.1-1.3KG/ tons；
（8）Add alterant：After refining terminates, add alterant and gone bad, silicon is mutually refined, alterant scope control is 1-1.5KG/ tons；
（9）Degasification：Degasification time control is 20-30 minutes, and temperature control is 700-710 DEG C, and degasification terminates casting aluminium ingot and carries out detection grain size, and aluminium ingot fracture grain size, which is better than being equal to after 2 grades, enters next process；Degassing procedure, which has, should focus on fire door by degasification scum silica frost before degasification terminates during scum silica frost and taken off totally with trivet；
（10）The refining of melting workshop section, degasification method：Refining pipe bend is extended downwardly into aluminium water, nitrogen valve is opened simultaneously, 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, secondly 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, is persistently stopped not in some position；
（11）Stand：Time of repose 15-20 minutes, 700-720 DEG C of dwell temperature；Aluminium liquid can not be stirred during standing to protect the oxide-film that aluminium liquid surface is formed；
（12）Ingot casting.
2. a kind of production method of lifting AlSi12Cu aluminium alloy ingots combination properties according to claim 1, it is characterised in that the step（3）Molten silicon step, is to add metallic silicon when without scum silica frost；Wen Du≤720 DEG C during addition；Aluminium liquid 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；Entirely molten silicon time control is 60-120 minutes；Silicon, the addition of manganese want abundance to prevent the later stage from adding on a small quantity.
3. the production method of a kind of lifting AlSi12Cu aluminium alloy ingots combination properties according to claim 2, it is characterised in that the entirely molten silicon time control is 60-90 minutes.
4. a kind of production method of lifting AlSi12Cu aluminium alloy ingots combination properties according to claim 1, it is characterised in that the step（10）Refining, degassing procedure all the time will maintain a certain distance refining pipe bent-up end mouthful with furnace bottom, 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；Gao Du≤the 15CM that control aluminium liquid to splash during degasification.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107937767A (en) * | 2017-12-28 | 2018-04-20 | 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 |
| CN108277371A (en) * | 2018-03-07 | 2018-07-13 | 戴爱娟 | A kind of preparation method for the Al-Si-Cu alloy material having coating |
| CN108342622A (en) * | 2018-03-07 | 2018-07-31 | 瞿凌飞 | A kind of preparation method of the compound Al-Si-Cu alloy of rare earth coating |
| 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 |
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| CN101712116A (en) * | 2008-10-06 | 2010-05-26 | 程拥军 | Process for manufacturing high-strength large-scale aluminum alloy plate |
| CN102912192A (en) * | 2012-09-03 | 2013-02-06 | 浙江中金铝业有限公司 | 1050 alloy CTO (computer-to-plate) substrate and preparation method thereof |
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| JPH05311272A (en) * | 1992-05-01 | 1993-11-22 | Sumitomo Light Metal Ind Ltd | Method for refining primary crystal si in hyper-eutectic al-si alloy and refining agent |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107937767A (en) * | 2017-12-28 | 2018-04-20 | 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 |
| 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 |
| CN108277371A (en) * | 2018-03-07 | 2018-07-13 | 戴爱娟 | A kind of preparation method for the Al-Si-Cu alloy material having coating |
| CN108342622A (en) * | 2018-03-07 | 2018-07-31 | 瞿凌飞 | A kind of preparation method of the compound Al-Si-Cu alloy of rare earth coating |
| 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 |
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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. |