CN107099701B - A kind of preparation method of lithium ion battery high intensity aluminium foil - Google Patents
A kind of preparation method of lithium ion battery high intensity aluminium foil Download PDFInfo
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- CN107099701B CN107099701B CN201710283145.0A CN201710283145A CN107099701B CN 107099701 B CN107099701 B CN 107099701B CN 201710283145 A CN201710283145 A CN 201710283145A CN 107099701 B CN107099701 B CN 107099701B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/40—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling foils which present special problems, e.g. because of thinness
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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Abstract
A kind of preparation method of lithium ion battery high intensity aluminium foil, electrolytic aluminium liquid and aluminium ingot are first smelted into aluminum melt and directly casting is rolled up at 6.95mm thickness castings, → finished product is cut → is rolled by cold rolling → slitting trimming → low temperature intermediate annealing → foil again and checks that technology of the package prepares lithium ion battery high intensity aluminium foil, aluminum melt is directly prepared to casting volume, substantially reduce technological process, low temperature intermediate annealing reduces the power consumption of annealing furnace, the lithium ion battery prepared its tensile strength >=175Mpa of high intensity aluminium foil, moistened surface tension >=32 dyne value.
Description
Technical field
The invention belongs to aluminium foil processing technique field, especially a kind of preparation side of lithium ion battery high intensity aluminium foil
Method.
Background technology
Aluminum strip of the thickness less than or equal to 0.2mm that aluminum or aluminum alloy band volume is formed after rolling is claimed on ordinary meaning
Be aluminium foil.The features such as aluminium foil is because of its light weight, good leak tightness, good, environmentally friendly covering property, is widely used in packaging, electric appliance, heat dissipation
The all fields of national economy such as device and building.
Lithium ion battery aluminium foil at present using it is more be the alloys such as 1060,1070, usual thickness at 12~25 μm simultaneously
It is delivered goods with H18 states, preparing lithium ion battery its conventional flowsheet for aluminium foil by 1070 alloys is：Melting → casting →
Cold rolling → slitting trimming → high temperature intermediate annealing → foil rolls → finished product cutting → inspection packaging, the aluminium foil which prepares its
Tensile strength can only achieve 160Mpa or so, since its material is softer and its aluminium foil surface band oil mass when finished product roll-force is smaller
Larger, moistened surface tension can only be generally maintained in 31 dynes of values.And requirement of the client to lithium ion battery aluminium foil is not only
It is that there is high conductivity, also requires have very high mechanical performance, especially very high to the requirement of tensile strength, usual tension is strong
Degree requirement >=175Mpa and be best with >=200Mpa, moistened surface tension >=32 dyne are worth, therefore in 1070 alloys of change
Certain components simultaneously change the important subject that common process is raising lithium ion battery aluminium foil.
Each process is summarized as follows in the common process of 1070 alloy production lithium ion battery aluminium foils：
One, melting：
The aluminium ingot of 99.7% or more content is put into smelting furnace and carries out melting, melting Control for Kiln Temperature is in 750 ± 5 DEG C of ranges
Interior, hydrogen content control is in 0.13ml/100gAl hereinafter, rotation air blast use to carry out online degasification and overanxious with guarantor through three-level
Melt quality is demonstrate,proved, the chemical composition of melt should meet the requirement of 1070 alloys in national standard GB/T3190-2008 after testing.
The chemical composition composition of 1070 alloys see the table below：
Two, casting：
Online degasification is carried out using rotation air blast when casting, filtering uses 30PPi+50PPi double-stage filterings, alterant to adopt
Control with Al-5Ti-0.2B and strictly alterant addition.Casting thickness control is follow-up rolling process in 7.0 ± 0.1mm
It distributes rational rolling pass and anneal gauge appropriate is arranged to prepare.
Three, cold rolling：
Between 7.0 ± 0.1mm is rolled down to 1.0~2.0mm thickness through multi-pass cold rolling, then high annealing, after cooling
Continue to turn slitting trimming when being cold rolled to trimming thickness.
Four, slitting trimming：
Each deflector roll in guide passage must be wiped when slitting trimming clearly, each deflector roll is wiped clearly with alcohol or acetone, it is ensured that aluminium is rolled up
Surface cannot have mark, viscous aluminium, scratch, scuffing, and end face is not allow for small broken sea of burr, turriform, scollop, scallop, edge etc., intermediate
Trimming staggered floor is necessarily less than 2mm, and turriform is less than 5mm.
Five, high temperature intermediate annealing：
The technique of high temperature intermediate annealing is：20~25 hours are kept the temperature under the conditions of 560~580 DEG C.
Six, foil rolls：
By several passes to finishing pass, aluminium foil surface is not allow for residual greasy dirt；Surface is not allow for elongated
Or the surface defect that any influence such as discontinuity scratch, scuffing, Periodic Traveling mark, bright wisp and bright band, hidden item, informal voucher use.
Seven, finished product is cut：
Each deflector roll in guide passage must be wiped when cutting clearly, each deflector roll is wiped clearly with alcohol or acetone；Ensure that aluminium rolls up surface
Cannot there are mark, viscous aluminium, scratch, scuffing.The aluminium volume of cutting, which is placed on floor, must pad the big cardboard of lastblock, not allow directly to fall
Ground.Small broken sea of burr, turriform, scollop, scallop, edge etc. is not allow for when cutting, cutting staggered floor is necessarily less than 0.5mm.After cutting
Rouleau end face must be clean, clean and tidy；The rouleau lot number and specification cut must write on the surface of aluminium volume with marking pen.
Eight, it checks and packs；
Mainly check that aluminum foil thickness, width must not exceed the margin of tolerance when finished product inspection, end face must not jagged, flange,
It wounds, staggered floor must not exceed 0.5mm.Compliant sleeve, material have to comply with customer requirement, and sleeve both sides stretch out aluminium foil end face and are respectively
5mm.It is required that accomplishing that tensile strength reaches 160Mpa or so, moistened surface tension, which reaches, to be maintained at as possible in 31 dynes of values, after qualified
It is packed according to the packing instructions of lithium ion battery aluminium foil.
1070 alloys prepare lithium ion battery aluminium foil because it is to the chemical composition of material, surface and template quality, and
The internal grain tissue of material suffers from more strict requirements, therefore its production difficulty is larger, and yield rate is extremely low.Along with the country
The breakthrough of the more emphasis amount of traditional aluminium foil processing enterprise, the product produced is also most to be used with home-use aluminium foil, cable cladding
The low value-added product ladies and gentlemen such as aluminium foil, and the research and development of part high-end technology product are lacked and are put into, therefore, since nearly 2 years, have
The R＆D work for closing aluminum foil for lithium battery is nearly at dead state, and the production capacity of aluminum foil for lithium battery, which also has no, to rise appreciably.
To sum up, the preparation R＆D process in relation to lithium ion battery aluminium foil is nearly at dead state, also has not seen correlation
Report.
Invention content
To solve the above problems, the present invention provides a kind of lithium ion battery preparation method of high intensity aluminium foil, first will
Electrolytic aluminium liquid and aluminium ingot are smelted into aluminum melt and directly casting is rolled up at 6.95mm thickness castings, then pass through cold rolling, low temperature intermediate annealing
And foil rolls the reasonable setting of equal technical parameters, to realize that aluminum melt directly prepares casting volume, substantially reduces technique stream
Journey reduces the power consumption of annealing furnace, the lithium ion battery prepared its tensile strength >=175Mpa of high intensity aluminium foil, surface profit
Wet tension >=32 dyne value.
In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme that：
A kind of preparation method of lithium ion battery high intensity aluminium foil, the preparation method is first by electrolytic aluminium liquid and aluminium ingot melting
It rolls up at 6.95mm thickness castings at aluminum melt and directly casting, is then rolled by cold rolling → slitting trimming → low temperature intermediate annealing → foil
→ finished product is cut → checks that technology of the package prepares lithium ion battery high intensity aluminium foil, wherein slitting trimming, finished product cutting and
Check that routinely technique carries out packaging, it is characterized in that：
1) electrolytic aluminium liquid and aluminium ingot are smelted into aluminum melt and directly casting is rolled up at 6.95mm thickness castings：
The electrolytic aluminium liquid of 50% parts by weight and the aluminium ingot of 50% parts by weight and aluminium content >=99.7% are put into melting together
Melting is carried out in stove and prepares aluminum melt, and melting Control for Kiln Temperature is within the scope of 750 ± 5 DEG C, the chemical composition of aluminum melt when melting
Following table requirement should be met after testing, and require to carry out degasification, slagging-off totally and stir to ensure the quality of aluminum melt.
The aluminum melt that smelting furnace is melted out directly carries out casting, and the casting temperature of aluminum melt is controlled at 680~710 DEG C,
Aluminum melt casting is rolled up at 6.95mm thickness castings by casting and rolling machine, roll casting speed control is wanted in 690~710mm/min, casting
Ask casting volume end face that there must not be staggered floor, lack aluminium, cold side phenomenon, the deflector roll in casting and rolling machine guide passage there cannot be wound and cause casting volume table
Face scratches, abrades, and the casting volume after casting must necessarily be placed in above pallet, not allow to be placed directly on ground；
2) cold rolling：
6.95mm thickness castings volume is cold rolled to 0.38~0.45mm thickness cold rolling coils, 0.38~0.45mm thickness cold rolling coils it is each cold
The mill train time operation of rolling is：6.95mm → 3.5~4.0mm → 1.9~2.2mm → 1.2~1.5mm → cooling for 24 hours → 0.6~
0.9mm → 0.38~0.45mm, it is desirable that working roll must be replaced when cold rolling cogging and wipe each roller in guide passage, each road clearly
Aluminium volume surface is not allow for bright wisp, bright band and aberration when secondary cold rolling, and surface purging has to totally, be not allow for residual greasy dirt,
Routinely technology requires to execute cold rolling speed；
3) low temperature intermediate annealing：
0.38~0.45mm thickness cold rolling coils are subjected to low temperature intermediate annealing, low temperature intermediate annealing is under the conditions of 240~280 DEG C
Heat preservation 4~6 hours, when annealing requirement sealed with high temperature resistant aluminum foil and adhesive tape pair 0.38~0.45mm thickness cold rolling coils, to ensure it not
Can after loose layer can stock shelf shove charge annealing, annealing be unable to after coming out of the stove blanking rack and it is completely cold after could carry out foil and roll；
4) foil rolls：
0.38~0.45mm thickness cold rolling roll-leaves Jing Guo low temperature intermediate annealing are rolled into 0.012~0.016mm thick aluminum foils volume,
Each foil mill train time operation of rolling of 0.012~0.016mm thick aluminum foils volume is：0.38~0.45mm → 0.18~0.21mm → 0.09
~0.12mm → 0.048~0.062mm → 0.022~0.031mm → 0.012~0.016mm, it is desirable that work must be replaced when foil rolls
Make roller and wipe each roller in guide passage clearly, ROLLING OIL must be clean, until 0.015mm thick aluminum foils must purge its surface when rolling up
Totally and it is not allow for residual greasy dirt, foil rolls speed, and routinely technology requires to execute；
0.012~0.016mm thick aluminum foils after foil rolls, after testing its tensile strength >=175Mpa, moistened surface tension
>=32 dynes of values.
Due to using technical solution as described above, the present invention to generate following good effect：
1, using the electrolytic aluminium liquid of 50% parts by weight and 50% parts by weight and aluminium content >=99.7% when melting of the present invention
Aluminium ingot, which is put into together in smelting furnace, carries out melting, is provided for the chemical composition of aluminum melt using the composition characteristic of high-temperature electrolysis molten aluminum
Adjustment space, while by the refinery practice in the tire packet refining techniques of high-temperature electrolysis molten aluminum and improvement smelting furnace, such as increasing
The techniques such as time of repose, short time multiple refining, ensure that aluminum melt quality, to realize the direct casting of aluminum melt at casting
Volume, shortens the technological process of production.
2, traditional lithium-ion battery is between the cast-rolling stock of 7.0mm thickness is rolled down to 1.0~2.0mm thickness, so with aluminium foil
Afterwards high annealing and when being rolled down to base material thickness trimming turn foil rolling.And the lithium ion battery of present invention high intensity aluminium foil electricity
Pond foil production technology is：Cast-rolling stock 6.95mm thickness is rolled down to 1.2~1.5mm thickness, it is cooling for 24 hours after be rolled down to 0.38 again~
0.45mm thickness trimmings, then low temperature intermediate annealing turn foil rolling, and lower low temperature intermediate anneal temperature greatly reduced
The power consumption of annealing furnace.
Specific implementation mode
The present invention is a kind of preparation method of lithium ion battery high intensity aluminium foil, and the present invention is first by electrolytic aluminium liquid and aluminium ingot
It is smelted into aluminum melt and directly casting is rolled up at 6.95mm thickness castings, then cold rolling, low temperature intermediate annealing and foil through the invention
The reasonable setting for rolling equal technical parameters substantially reduces technological process, reduces to realize that aluminum melt directly prepares casting volume
The power consumption of annealing furnace.
Electrolytic aluminium liquid and aluminium ingot are first smelted into aluminum melt for the preparation method of the present invention and directly casting is cast at 6.95mm thickness
Volume is rolled, then rolling → finished product is cut → by cold rolling → slitting trimming → low temperature intermediate annealing → foil checks that technology of the package is prepared
Routinely technique carries out for lithium ion battery high intensity aluminium foil, wherein slitting trimming, finished product cutting and inspection packaging.
The present invention can be explained in more detail by the following examples, not described part refers to background technology related content.
The invention is not limited in the following examples, the open purpose of the present invention be intended to all variations in the protection scope of the invention and
It improves.
One, electrolytic aluminium liquid and aluminium ingot are smelted into aluminum melt and directly casting is rolled up at 6.95mm thickness castings：
The aluminium ingot of 10 tons of electrolytic aluminium liquid and 10 tons and aluminium content >=99.7% is put into together in smelting furnace and carries out melting
Aluminum melt is prepared, melting Control for Kiln Temperature is within the scope of 750 ± 5 DEG C, and the chemical composition of aluminum melt should meet after testing when melting
Following table requirement, and require to carry out degasification, slagging-off totally and stir to ensure that the quality of aluminum melt, hydrogen content control exist
0.13ml/100gAl is hereinafter, use rotation air blast to carry out online degasification and overanxious to ensure aluminum melt quality through three-level.
The present invention is a kind of improvement formula on the basis of 1070 alloy, by upper table this it appears that aluminium of the present invention is molten
The chemical composition of body is constituted in place of the micro change with 1070 alloy compositions.
The aluminum melt that smelting furnace is melted out directly carries out casting, and the casting temperature of aluminum melt is controlled at 680~710 DEG C,
Aluminum melt casting is rolled up at 6.95mm thickness castings by casting and rolling machine, in 700mm/min, which can be with for roll casting speed control
The metallurgical imperfections such as hydrogen content, slag inclusion, the tissue looseness in cast-rolling stock are effectively eliminated and controlled, pay attention to suitable roll casting zone and mouth
Roller gap can ensure it with good casting surface quality and internal grain tissue.Require casting volume end face must not when casting
There is staggered floor, lack aluminium, cold side phenomenon, the deflector roll in casting and rolling machine guide passage there cannot be wound and cause casting volume surface tear, scratch, casting
Casting volume afterwards must necessarily be placed in above pallet, not allow to be placed directly on ground.
The micro adjustment of Cu contents is conducive to improve the tensile strength index of high intensity aluminium foil, and Fe and Si contents is micro
Adjustment advantageously reduces brittleness, the hot cracking tendency of high intensity aluminium foil, and Mn, Mg, Cr, Zn can enhance the conductivity of high intensity aluminium foil
And improve its processing performance.
Melting is carried out with electrolytic aluminium liquid+aluminium ingot and directly carries out casting compared with common process, eliminates the casting of aluminium ingot
With secondary remelting process, through measuring and calculating：Can reduce molten aluminum cast during aluminium ingot 0.4~0.5% aluminium damage and aluminium ingot it is secondary heavy
The scaling loss of 2~4% aluminium, has saved the energy, has improved production efficiency and yield rate during molten.
Two, cold rolling：
6.95mm thickness castings volume is cold rolled to 0.4mm thickness cold rolling coils, each cold rolling pass operation of rolling of 0.4mm thickness cold rolling coils
It is：6.95mm → 3.8mm → 2.1mm → 1.35mm → cooling for 24 hours → 0.7mm → 0.4mm, it is desirable that must be replaced when cold rolling cogging
Working roll simultaneously wipes clearly each roller in guide passage, and aluminium volume surface is not allow for bright wisp, bright band and aberration, table when each passage cold rolling
Face purging has to totally, be not allow for residual greasy dirt, routinely technology requires to execute cold rolling speed.
Three, the reference common process process of slitting trimming：
Each deflector roll in guide passage must be wiped when slitting trimming clearly, each deflector roll is wiped clearly with alcohol or acetone, it is ensured that aluminium is rolled up
Surface cannot have mark, viscous aluminium, scratch, scuffing, and end face is not allow for small broken sea of burr, turriform, scollop, scallop, edge etc., intermediate
Trimming staggered floor is necessarily less than 2mm, and turriform is less than 5mm.
Four, low temperature intermediate annealing：
0.4mm thickness cold rolling coils are subjected to low temperature intermediate annealing, 4~6 hours keep the temperatures at 260 DEG C, requirement is with resistance to when annealing
High temperature foil adhesive tape seals 0.4mm thickness cold rolling coils, with ensure its cannot after loose layer can stock shelf shove charge anneal, annealing is come out of the stove
After be unable to blanking rack and it is completely cold after could carry out foil and roll.
Low temperature intermediate annealing can ensure with slower mill speed and smaller tension when foil rolls, and when preventing foil from rolling
Aluminium foil surface generates the defects of mark, viscous wound, big thick difference fluctuation, and lower low temperature intermediate anneal temperature, which can greatly reduce, to move back
The power consumption of stove.
Five, foil rolls：
0.4mm thickness cold rolling roll-leaves Jing Guo low temperature intermediate annealing are rolled into 0.015mm thick aluminum foils volume, 0.015mm thick aluminum foils
Each foil mill train time operation of rolling of volume is：0.4mm → 0.2mm → 0.1mm → 0.055mm → 0.028mm → 0.015mm, it is desirable that
Foil must replace working roll and wipe each roller in guide passage clearly when rolling, ROLLING OIL must be clean, until 0.015mm thick aluminum foils are rolled up
When its surface must be purged clean and be not allow for residual greasy dirt, foil rolls speed, and routinely technology requires to execute.
Foil roll after 0.015mm thick aluminum foils, after testing its tensile strength reach >=175Mpa, optimum tensile strength even can
To reach 203~207Mpa, moistened surface tension reaches >=32 dynes of values, and best surface wetting tension even can reach 34 and reach
Because of value, detection reference method is as follows：
GB/T228.1-2010 according to national standards《Metal material stretching test》5 times of standard tensile specimens are processed into, electricity
Son is stretching on Japanese Shimadzu AGS-X 1KN precision tension testers and carries out, and tensile speed reference value is 1mm/min.Dyne value
Detection uses standard dyne liquid contrasting detection.
Six, the reference common process process of finished product cutting：
Each deflector roll in guide passage must be wiped when cutting clearly, each deflector roll is wiped clearly with alcohol or acetone；Ensure that aluminium rolls up surface
Cannot there are mark, viscous aluminium, scratch, scuffing.The aluminium volume of cutting, which is placed on floor, must pad the big cardboard of lastblock, not allow directly to fall
Ground.Pay attention to checking aluminium foil surface when cutting whether there is or not greasy dirt, surface must not be sent to lower process with greasy dirt.It is not allow for when cutting
Small broken sea of burr, turriform, scollop, scallop, edge etc., cutting staggered floor are necessarily less than 0.5mm.Rouleau end face after cutting must it is clean,
Neatly；The rouleau lot number and specification cut must write on the surface of aluminium volume with marking pen.
Seven, the reference common process process of packaging is checked：
Mainly check that aluminum foil thickness, width must not exceed the margin of tolerance when finished product inspection, end face must not jagged, flange,
It wounds, staggered floor must not exceed 0.5mm.Compliant sleeve, material have to comply with customer requirement, and sleeve both sides stretch out aluminium foil end face and are respectively
5mm is packed after qualified according to the packing instructions of lithium ion battery aluminium foil.
The technical solution or embodiment selected herein for the open purpose of the present invention, are presently considered to be suitable
, it should be appreciated that：Belong to all changes of the embodiment in this design and the scope of the invention the present invention is intended to include all
Change and improves.
Claims (1)
1. electrolytic aluminium liquid and aluminium ingot are first smelted by a kind of lithium ion battery preparation method of high intensity aluminium foil, the preparation method
Aluminum melt and directly casting are rolled up at 6.95mm thickness castings, then roll by cold rolling → slitting trimming → low temperature intermediate annealing → foil →
Finished product is cut → is checked technology of the package and prepares lithium ion battery high intensity aluminium foil, wherein slitting trimming, finished product cutting and inspection
Looking into packaging, routinely technique carries out, it is characterized in that：
1) electrolytic aluminium liquid and aluminium ingot are smelted into aluminum melt and directly casting is rolled up at 6.95mm thickness castings：
The electrolytic aluminium liquid of 50% parts by weight and the aluminium ingot of 50% parts by weight and aluminium content >=99.7% are put into smelting furnace together
It carries out melting and prepares aluminum melt, melting Control for Kiln Temperature is within the scope of 750 ± 5 DEG C, and the chemical composition of aluminum melt is through inspection when melting
Survey should meet following table requirement, and require to carry out degasification, slagging-off totally and stir to ensure the quality of aluminum melt；
The aluminum melt that smelting furnace is melted out directly carries out casting, and the casting temperature of aluminum melt controls at 680~710 DEG C, passes through
Casting and rolling machine rolls up aluminum melt casting at 6.95mm thickness castings, and roll casting speed control requires casting in 690~710mm/min, casting
Staggered floor must not be had, lack aluminium, cold side phenomenon by rolling volume end face, and the deflector roll in casting and rolling machine guide passage cannot have wound and casting volume surface is caused to draw
Wound, scratch, the casting volume after casting must necessarily be placed in above pallet, do not allow to be placed directly on ground；
2) cold rolling：
6.95mm thickness castings volume is cold rolled to 0.38~0.45mm thickness cold rolling coils, each cold rolling road of 0.38~0.45mm thickness cold rolling coils
The secondary operation of rolling is：6.95mm → 3.5~4.0mm → 1.9~2.2mm → 1.2~1.5mm → cooling for 24 hours → 0.6~0.9mm
→ 0.38~0.45mm, it is desirable that working roll must be replaced when cold rolling cogging and wipe each roller in guide passage clearly, each passage is cold
Aluminium volume surface is not allow for bright wisp, bright band and aberration when rolling, and surface purging has to totally, be not allow for residual greasy dirt, cold rolling
Routinely technology requires to execute speed；
3) low temperature intermediate annealing：
0.38~0.45mm thickness cold rolling coils are subjected to low temperature intermediate annealing, low temperature intermediate annealing is kept the temperature under the conditions of 240~280 DEG C
4~6 hours, when annealing requirement sealed with high temperature resistant aluminum foil and adhesive tape pair 0.38~0.45mm thickness cold rolling coils, to ensure that it cannot pine
After layer can stock shelf shove charge annealing, annealing be unable to after coming out of the stove blanking rack and it is completely cold after could carry out foil and roll；
4) foil rolls：
0.38~0.45mm thickness cold rolling roll-leaves Jing Guo low temperature intermediate annealing are rolled into 0.012~0.016mm thick aluminum foils volume,
Each foil mill train time operation of rolling of 0.012~0.016mm thick aluminum foils volume is：0.38~0.45mm → 0.18~0.21mm → 0.09
~0.12mm → 0.048~0.062mm → 0.022~0.031mm → 0.012~0.016mm, it is desirable that work must be replaced when foil rolls
Make roller and wipe each roller in guide passage clearly, ROLLING OIL must be clean, until 0.012~0.016mm thick aluminum foils must be to it when rolling up
Surface purging is clean and is not allow for residual greasy dirt, and foil rolls speed, and routinely technology requires to execute；
0.012~0.016mm thick aluminum foils after foil rolls, after testing its tensile strength >=175MPa, moistened surface tension >=32
Dyne value.
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| CN116043071B (en) * | 2023-02-08 | 2024-06-07 | 芜湖众源铝箔有限公司 | Aluminum foil for 0.008-0.016mmH18 specification lithium battery current collector and production process thereof |
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| FR2813316B1 (en) * | 2000-08-29 | 2002-10-18 | Pechiney Rhenalu | PROCESS FOR PRODUCING VERY THIN STRIPS OF ALUMINUM-IRON ALLOY |
| CN101628644B (en) * | 2009-08-14 | 2011-03-16 | 江阴新仁科技有限公司 | Air-permeability aluminum foil and preparation method thereof |
| CN101812616A (en) * | 2010-04-22 | 2010-08-25 | 镇江鼎胜铝业股份有限公司 | Aluminium foil material for tableware and manufacturing method of aluminium foil for tableware |
| WO2012086448A1 (en) * | 2010-12-20 | 2012-06-28 | 古河スカイ株式会社 | Aluminum alloy foil for electrode current collectors and manufacturing method thereof |
| CN102392156A (en) * | 2011-10-31 | 2012-03-28 | 河南神火铝材有限公司 | Aluminum alloy material and production method of cast-rolling stock of decorative strip of same |
| CN103084805B (en) * | 2013-01-15 | 2016-09-07 | 洛阳龙鼎铝业有限公司 | A kind of 1235 double zero foil production process |
| CN104294112B (en) * | 2013-07-16 | 2016-08-10 | 大力神铝业股份有限公司 | A kind of manufacture method of Airline meal box alloy foil |
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