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 PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
casting
foil
aluminium
rolling
thickness
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201710283145.0A
Other languages
Chinese (zh)
Other versions
CN107099701A (en
Inventor
韩成艺
张安乐
程远鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LUOYANG LONGDING ALUMINUM CO Ltd
Original Assignee
LUOYANG LONGDING ALUMINUM CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LUOYANG LONGDING ALUMINUM CO Ltd filed Critical LUOYANG LONGDING ALUMINUM CO Ltd
Priority to CN201710283145.0A priority Critical patent/CN107099701B/en
Publication of CN107099701A publication Critical patent/CN107099701A/en
Application granted granted Critical
Publication of CN107099701B publication Critical patent/CN107099701B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-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
    • B21B1/40Metal-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
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making non-ferrous alloys
    • C22C1/02Making non-ferrous alloys by melting
    • C22C1/026Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)

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

A kind of preparation method of lithium ion battery high intensity aluminium foil
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.
CN201710283145.0A 2017-04-26 2017-04-26 A kind of preparation method of lithium ion battery high intensity aluminium foil Active CN107099701B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710283145.0A CN107099701B (en) 2017-04-26 2017-04-26 A kind of preparation method of lithium ion battery high intensity aluminium foil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710283145.0A CN107099701B (en) 2017-04-26 2017-04-26 A kind of preparation method of lithium ion battery high intensity aluminium foil

Publications (2)

Publication Number Publication Date
CN107099701A CN107099701A (en) 2017-08-29
CN107099701B true CN107099701B (en) 2018-08-31

Family

ID=59658134

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710283145.0A Active CN107099701B (en) 2017-04-26 2017-04-26 A kind of preparation method of lithium ion battery high intensity aluminium foil

Country Status (1)

Country Link
CN (1) CN107099701B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7042920B2 (en) 2017-11-21 2022-03-28 スペイラ ゲゼルシャフト ミット ベシュレンクテル ハフツング High-strength battery electrode foil for the manufacture of lithium-ion storage batteries
CN108330375A (en) * 2018-01-24 2018-07-27 云南浩鑫铝箔有限公司 A kind of method that electrolytic aluminium liquid casting prepares new energy resource power battery aluminium foil
CN109266913B (en) * 2018-12-03 2021-01-08 江苏大亚铝业有限公司 Preparation method of 1100D alloy 9-micrometer double-sided light aluminum foil for lithium battery
CN110038900B (en) * 2019-04-02 2020-11-27 界首市天鸿新材料股份有限公司 Processing method of aluminum foil layer for lithium ion battery flexible package aluminum-plastic composite film
CN110681695A (en) * 2019-10-18 2020-01-14 华北铝业有限公司 3003 aluminum foil production process for alloy capacitor
CN110938768B (en) * 2019-11-30 2021-01-22 河南科源电子铝箔有限公司 High-voltage electronic aluminum foil without generation of coarse grains and preparation method thereof
CN111793759B (en) * 2020-08-11 2021-11-23 华北铝业有限公司 1070 high-performance aluminum foil for lithium ion battery and preparation method thereof
CN113714287A (en) * 2020-12-31 2021-11-30 杭州五星铝业有限公司 Production process of aluminum foil for Dada double-sided photocell
CN112893464A (en) * 2021-01-13 2021-06-04 安徽力幕新材料科技有限公司 Processing method of aluminum foil for power battery
CN114525432A (en) * 2022-01-08 2022-05-24 浙江佑丰新材料股份有限公司 High-strength and high-extension aluminum foil for new energy battery and manufacturing method thereof
CN114635097A (en) * 2022-03-14 2022-06-17 上海兰钧新能源科技有限公司 Aluminum foil for lithium battery and preparation method thereof
CN115537609A (en) * 2022-10-18 2022-12-30 杭州五星铝业有限公司 Preparation method of aluminum foil for lithium ion battery and aluminum foil for lithium ion battery
CN115710651B (en) * 2022-10-18 2024-05-14 杭州五星铝业有限公司 Preparation method of lithium battery aluminum foil and lithium battery aluminum foil
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

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
KR101902763B1 (en) * 2010-12-20 2018-10-01 가부시키가이샤 유에이씨제이 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

Also Published As

Publication number Publication date
CN107099701A (en) 2017-08-29

Similar Documents

Publication Publication Date Title
CN107099701B (en) A kind of preparation method of lithium ion battery high intensity aluminium foil
CN106929714B (en) A kind of preparation method of high intensity tableware aluminium foil
CN106929719B (en) A kind of preparation method of aluminium foil used for automobile air conditioning
CN106191544B (en) A kind of lithium battery 8021 Soft Roll aluminium foils and its production method
CN102899531B (en) Double zero aluminum foil with thickness of 0.004-0.0048 mm, and preparation method thereof
CN103084805B (en) A kind of 1235 double zero foil production process
CN102230120B (en) High-performance elastic alloy material for aerial hyperbaric cabin and production method thereof
CN107012370B (en) High-performance 1230A alloy lithium ion battery aluminium foils and preparation method thereof
CN102383008B (en) Aluminum strip material for capacitor shell and manufacturing method for aluminum strip material
CN107012371B (en) A kind of preparation method of architectural decoration aluminium strip
CN106350714B (en) A kind of 3C industries high-end anodic oxidation aluminium strip and its production method
CN101481765A (en) Aluminum alloy strip assembly and machining technique thereof
CN103100675B (en) A kind of 8011-O banded cable production technology
CN104611616B (en) Aluminium foil produced by utilization of cast-rolled slabs and used for dynamic functional materials and preparing method thereof
CN111549261A (en) Preparation method for producing deep-drawing cold-forming medicinal aluminum foil by short-process casting and rolling blank
CN101956101A (en) Aluminum foil and production method thereof
CN109402456B (en) Double-sided dark battery foil and preparation method thereof
CN111270109B (en) Method for producing 8021 aluminum alloy soft packaging foil for lithium battery by cast rolling method
CN110484780A (en) A kind of micro preparation method for changing 8011 alloy production aluminum foil for household use
CN101948972A (en) Aluminum alloy strip for refrigerator and manufacturing method thereof
CN112893464A (en) Processing method of aluminum foil for power battery
CN105239003A (en) Thick gauge steel plate for offshore platform and production method of thick gauge steel plate
CN109759474A (en) A kind of preparation method of double-face optical aluminum foil
CN110484755A (en) A kind of preparation method of high intensity aluminum foil for household use
CN107952944A (en) CSP sheet blank continuous casting high-carbon steel crystallizer protecting residues

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant