CN103785800A - Production method for double-zero aluminum foil - Google Patents
Production method for double-zero aluminum foil Download PDFInfo
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- CN103785800A CN103785800A CN201410015311.5A CN201410015311A CN103785800A CN 103785800 A CN103785800 A CN 103785800A CN 201410015311 A CN201410015311 A CN 201410015311A CN 103785800 A CN103785800 A CN 103785800A
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Abstract
The invention discloses a production method for a double-zero aluminum foil. The production method includes subjecting an aluminum-alloy molten mass to cast rolling to produce a cast rolling coil with the thickness of 6.5-8.0mm after degassing and deslagging, subjecting the cast rolling coil to first cold rolling to produce an aluminum coil with the thickness of 2.0-3.0mm, performing first heat treatment on the aluminum coil subjected to the first cold rolling at the temperature of 450-550 DEG C for 15-20 hours, subjecting the aluminum coil subjected to the first heat treatment to second cold rolling to produce an aluminum coil with the thickness of 0.6-0.8mm, and performing second heat treatment on the aluminum coil subjected to the second cold rolling at the temperature of 300-380 DEG C for 6-12 hours; subjecting the aluminum coil subjected to the second heat treatment to third cold rolling to produce an aluminum coil with the thickness of 0.05-0.1mm, heating the aluminum coil to the aluminum-foil recrystallization critical temperature of 250-310 DEG C, keeping the aluminum coil at the temperature for 5-10 hours, and subjecting an aluminum foil to fourth cold rolling to produce the double-zero aluminum foil with the thickness of 0.006-0.009mm. The double-zero aluminum foil produced by the production method has tensile strength of more than 95Mpa, ductility of more than 3.1%, small blank grain size, few surface stripes, few needle holes and stable quality.
Description
Technical field
The present invention relates to aluminium foil process technology, specifically a kind of production method of double-zero aluminum foil.
Background technology
At present, double-zero aluminum foil is mainly used in packaging field, as aluminium foil, paperboard aluminium foil for aluminum foil for flexible package, cigarette.But, except Soft Roll need to be aluminium foil surface printing with aluminium foil, cigarette cardboard aluminium foil and gold card paper all need to print with aluminium foil after aluminium foil surface is coated with mill base, now, the surface quality exquisiteness of aluminium foil, striated surface is little and few, and the mill base of required painting is just few, effect after printing is all right, and vice versa.If the striated surface of aluminium foil is often and larger, just need to be coated with the printing effect that thicker mill base could obtain, increase the production cost of enterprise.
The existing blank of double-zero aluminum foil in the industry generally has two kinds of blank forms, and one is cast-rolling stock, and one is hot rolling blank.Cast-rolling stock production process is: aluminium liquid is rolled into casting volume through casting and rolling machine, and casting volume is rolled into aluminum foil stock through cold-rolling mill, and cold-rolling process interts heat-treats.The production process of hot rolling blank is: aluminium liquid is cast as large slab ingot through pig moulding machine, and large slab ingot carries out hot rolling after milling face and heat treatment, and then is rolled into aluminum foil stock through cold-rolling mill, and cold-rolled process interts heat-treats.These two kinds of aluminum foil stocks, because their work flow technique is different, cause the grain size of paper tinsel base different, make the fine and smooth degree varies sample in surface of final double-zero aluminum foil product.Generally acknowledged viewpoint and actual conditions are extremely exquisitenesses of surface that hot rolling cogging is produced double-zero aluminum foil product, and there is obvious striated surface on the surface that double-zero aluminum foil is produced in casting cogging.Therefore, develop a kind of with cast-rolling stock produce surperficial fine and smooth double-zero aluminum foil be the problem that aluminium foil manufacturing enterprise needs solution badly always.
Along with the development of casting production technology, by intert the high temperature anneal of 350-480 ℃ in cold-rolled process, the K cryogenic treatment of carrying out again 120-200 ℃ after rolling finishes makes aluminium foil softening.This technique is improved the surface of double-zero aluminum foil, but still has obvious striped and stain, and follow-up colouring and printing cost are higher, and the quality of product is unstable.
Summary of the invention
The present invention seeks to the deficiency for solving the problems of the technologies described above, a kind of production method of double-zero aluminum foil is provided, improve the grainiess of aluminium foil, and improve the problem of cast-rolling stock production double-zero aluminum foil striated surface, make aluminium foil there is higher-strength simultaneously.
The present invention for solving the problems of the technologies described above adopted technical scheme is: a kind of production method of double-zero aluminum foil, and its concrete operation step is as follows:
A kind of production method of double-zero aluminum foil, aluminium alloy molten mass is carried out after degasification slagging-off to casting, and to become thickness be the casting volume of 6.5-8.0mm, again casting volume being become to thickness through cold rolling is for the first time the aluminium volume of 2.0-3.0mm, then the aluminium after cold rolling is for the first time twisted at the temperature of 450-550 ℃ and carry out the heat treatment for the first time of 15-20 hour, then the aluminium volume after heat treatment for the first time being become to thickness through cold rolling is for the second time the aluminium volume of 0.6-0.8mm, and the aluminium after cold rolling is for the second time twisted at the temperature of 300-380 ℃ and carry out the heat treatment for the second time of 6-12 hour; Then the aluminium volume after heat treatment is for the second time become to the aluminium volume of 0.05-0.1mm thickness through cold rolling for the third time, then aluminium volume is placed in Equipment for Heating Processing, and be heated to the critical-temperature of aluminium foil recrystallization, keep 5-10 hour, to the grainiess of aluminium foil is changed, afterwards aluminium foil is carried out to the 4th cold rolling and becomes the double-zero aluminum foil of 0.006-0.009mm;
The critical-temperature of described aluminium foil recrystallization is 250-310 ℃.
Described aluminium alloy is AA1235 aluminium alloy.
Beneficial effect is:
The production method of double-zero aluminum foil of the present invention is selected when aluminum foil rolling is thick to 0.05-0.1mm, under the critical-temperature of aluminium foil recrystallization, process, both guaranteed to harden and make aluminium twist in finish to gauge to regain higher intensity by following process, thereby obtain higher mill speed, enhance productivity, guarantee again aluminium foil in this processing and last time between heat treatment, had enough cold deformations, guaranteeing working modulus, and make aluminium foil obtain tiny grain structure.If aluminum foil thickness is less than 0.05mm when heat treatment, the rolling pass after heat treatment can be because aluminium volume intensity, compared with low and make production efficiency low, be also easy to produce new aluminium foil defect.If aluminum foil thickness is greater than 0.1mm when heat treatment, and for the second time, between heat treatment, lack enough cold deformations, working modulus is less, and grainiess cannot be improved, and makes this time to process and lose meaning.
The production method of double-zero aluminum foil of the present invention is in the time being rolled down to 0.05-0.1mm, be chosen under the critical-temperature of aluminium foil recrystallization and process, compared with the softening processing of carrying out 120-200 ℃ with existing technique, can improve the grainiess of aluminium foil, make surface quality finer and smoother.Compared with high annealing, can make aluminium foil there is higher intensity, to guarantee processing efficiency.And after final rolling, do not need to soften processing, properties of product are improved again.
The production method of double-zero aluminum foil of the present invention, carry out repeatedly cold rolling, and interspersed three heat treatments in process of production, the casting volume thickness of rolling combines with Technology for Heating Processing, and three heat treatment perfect adaptations of four rollings, have reduced obtaining aluminum foil stock crystallite dimension, make the striated surface that makes double-zero aluminum foil further reduce and reduce, approach and make the surface quality of double-zero aluminum foil with hot rolling blank, surface is substantially without striped, and has higher intensity.This technique is prepared the double-zero aluminum foil that thickness is 0.006-0.009mm, can reach 15 myriametres without broken belt, and hot strength is greater than 95Mpa, and percentage elongation is greater than 3.1%, and blank crystallite dimension is little, and striated surface is few, pin hole quantity is few, and steady quality.
the specific embodiment
A production method for double-zero aluminum foil, prepared double-zero aluminum foil be reach 15 myriametres without broken belt, thickness is 0.006-0.009mm, its concrete operation step is as follows:
A kind of production method of double-zero aluminum foil, aluminium alloy molten mass is carried out after degasification slagging-off to casting, and to become thickness be the casting volume of 6.5-8.0mm, again casting volume being become to thickness through cold rolling is for the first time the aluminium volume of 2.0-3.0mm, then the aluminium after cold rolling is for the first time twisted at the temperature of 450-550 ℃ and carry out the heat treatment for the first time of 15-20 hour, then the aluminium volume after heat treatment for the first time being become to thickness through cold rolling is for the second time the aluminium volume of 0.6-0.8mm, and the aluminium after cold rolling is for the second time twisted at the temperature of 300-380 ℃ and carry out the heat treatment for the second time of 6-12 hour; Then the aluminium volume after heat treatment is for the second time become to the aluminium volume of 0.05-0.1mm thickness through cold rolling for the third time, then aluminium volume is placed in Equipment for Heating Processing, and be heated to the critical-temperature of aluminium foil recrystallization, keep 5-10 hour, to the grainiess of aluminium foil is changed, afterwards aluminium foil is carried out to the 4th cold rolling and becomes the double-zero aluminum foil of 0.006-0.009mm;
The critical-temperature of described aluminium foil recrystallization is 250-310 ℃.
Described aluminium alloy is AA1235 aluminium alloy.
embodiment 1
A production method for double-zero aluminum foil, thickness is 0.006mm, its concrete operation step is as follows:
A kind of production method of double-zero aluminum foil, AA1235 aluminium alloy molten mass is carried out after degasification slagging-off to casting, and to become thickness be the casting volume of 6.5-8.0mm, again casting volume being become to thickness through cold rolling is for the first time the aluminium volume of 2.0-3.0mm, then the aluminium after cold rolling is for the first time twisted at the temperature of 450-550 ℃ and carry out the heat treatment for the first time of 15-20 hour, then the aluminium volume after heat treatment for the first time being become to thickness through cold rolling is for the second time the aluminium volume of 0.6-0.8mm, and the aluminium after cold rolling is for the second time twisted at the temperature of 300-380 ℃ and carry out the heat treatment for the second time of 6-12 hour, then the aluminium volume after heat treatment is for the second time become to the aluminium volume of 0.05-0.1mm thickness through cold rolling for the third time, then aluminium volume is placed in Equipment for Heating Processing, and be heated to the critical-temperature of aluminium foil recrystallization, keep 5-10 hour, to the grainiess of aluminium foil is changed, afterwards aluminium foil is carried out to the 4th cold rolling and becomes the double-zero aluminum foil of 0.009mm, its final aluminum foil finished product tensile strength reaches 97Mpa, and percentage elongation reaches 3.1%.
embodiment 2
A production method for double-zero aluminum foil, thickness is 0.007mm, its concrete operation step is as follows:
A kind of production method of double-zero aluminum foil, aluminium alloy molten mass is carried out after degasification slagging-off to casting, and to become thickness be the casting volume of 6.5-8.0mm, again casting volume being become to thickness through cold rolling is for the first time the aluminium volume of 2.0mm, then the aluminium after cold rolling is for the first time twisted at the temperature of 450 ℃ and carry out the heat treatment for the first time of 15 hours, then the aluminium volume after heat treatment for the first time being become to thickness through cold rolling is for the second time the aluminium volume of 0.6mm, and the aluminium after cold rolling is for the second time twisted at the temperature of 300 ℃ and carry out the heat treatment for the second time of 6 hours; Then the aluminium volume after heat treatment is for the second time become to the aluminium volume of 0.05mm thickness through cold rolling for the third time, then aluminium volume is placed in Equipment for Heating Processing, and be heated to the critical-temperature of aluminium foil recrystallization, keep 5 hours, to the grainiess of aluminium foil is changed, afterwards aluminium foil is carried out to the 4th cold rolling and becomes the double-zero aluminum foil of 0.006mm; Its final aluminum foil finished product tensile strength reaches 96Mpa, and percentage elongation reaches 3.3%.
embodiment 3
A production method for double-zero aluminum foil, thickness is 0.009mm, its concrete operation step is as follows:
A kind of production method of double-zero aluminum foil, aluminium alloy molten mass is carried out after degasification slagging-off to casting, and to become thickness be the casting volume of 6.5-8.0mm, again casting volume being become to thickness through cold rolling is for the first time the aluminium volume of 2.5mm, then the aluminium after cold rolling is for the first time twisted at the temperature of 500 ℃ and carry out the heat treatment for the first time of 18 hours, then the aluminium volume after heat treatment for the first time being become to thickness through cold rolling is for the second time the aluminium volume of 0.7mm, and the aluminium after cold rolling is for the second time twisted at the temperature of 360 ℃ and carry out the heat treatment for the second time of 10 hours; Then the aluminium volume after heat treatment is for the second time become to the aluminium volume of 0.08mm thickness through cold rolling for the third time, then aluminium volume is placed in Equipment for Heating Processing, and be heated to the critical-temperature of aluminium foil recrystallization, keep 8 hours, to the grainiess of aluminium foil is changed, afterwards aluminium foil is carried out to the 4th cold rolling and becomes the double-zero aluminum foil of 0.008mm; Its final aluminum foil finished product tensile strength reaches 97Mpa, percentage elongation 3.1%.
Claims (2)
1. the production method of a double-zero aluminum foil, comprise and aluminium alloy molten mass is carried out after degasification slagging-off to casting to become thickness be the step of the casting volume of 6.5-8.0mm, it is the step of the aluminium volume of 2.0-3.0mm that casting volume is become to thickness through cold rolling for the first time, aluminium after cold rolling is for the first time twisted in to the heat treated step for the first time of carrying out at the temperature of 450-550 ℃ 15-20 hour, it is the step of the aluminium volume of 0.6-0.8mm that aluminium volume after heat treatment is for the first time become to thickness through cold rolling for the second time, and the aluminium after cold rolling is for the second time twisted in to the heat treated step for the second time of carrying out at the temperature of 300-380 ℃ 6-12 hour, it is characterized in that: by the aluminium volume after heat treatment for the second time through being rolled into for the third time the aluminium volume of 0.05-0.1mm thickness, then aluminium volume is placed in Equipment for Heating Processing, and be heated to the critical-temperature of aluminium foil recrystallization, keep 5-10 hour, to the grainiess of aluminium foil is changed, afterwards aluminium foil is carried out to the 4th cold rolling and become the double-zero aluminum foil of 0.006-0.009mm, the critical-temperature of described aluminium foil recrystallization is 250-310 ℃.
2. the production method of double-zero aluminum foil as claimed in claim 1, is characterized in that: described aluminium alloy is AA1235 aluminium alloy.
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| CN201410015311.5A CN103785800B (en) | 2014-01-14 | 2014-01-14 | A kind of production method of double-zero aluminum foil |
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| CN201410015311.5A CN103785800B (en) | 2014-01-14 | 2014-01-14 | A kind of production method of double-zero aluminum foil |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104624647A (en) * | 2014-12-31 | 2015-05-20 | 中铝西南铝冷连轧板带有限公司 | Production method for cast rolling 1100 alloy aluminum foil for mobile-phone battery shell |
| CN105880286A (en) * | 2014-12-31 | 2016-08-24 | 杨长国 | Manufacturing method for coaxial cable foil |
| CN106825040A (en) * | 2017-03-27 | 2017-06-13 | 江苏大亚铝业有限公司 | The method of 1850mm breadth mill milling double-zero aluminum foils |
| CN111999464A (en) * | 2020-08-26 | 2020-11-27 | 上海大屯能源股份有限公司江苏分公司 | Pre-control detection method for solving double-material dark surface stripe |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104624647A (en) * | 2014-12-31 | 2015-05-20 | 中铝西南铝冷连轧板带有限公司 | Production method for cast rolling 1100 alloy aluminum foil for mobile-phone battery shell |
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| CN106825040A (en) * | 2017-03-27 | 2017-06-13 | 江苏大亚铝业有限公司 | The method of 1850mm breadth mill milling double-zero aluminum foils |
| CN106825040B (en) * | 2017-03-27 | 2019-02-22 | 江苏大亚铝业有限公司 | The method of 1850mm breadth mill milling double-zero aluminum foil |
| CN111999464A (en) * | 2020-08-26 | 2020-11-27 | 上海大屯能源股份有限公司江苏分公司 | Pre-control detection method for solving double-material dark surface stripe |
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| CN103785800B (en) | 2016-03-30 |
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