CN106311747A - Aluminum foil for lithium ion battery flexible package aluminum plastic film and production process for aluminum foil - Google Patents
Aluminum foil for lithium ion battery flexible package aluminum plastic film and production process for aluminum foil Download PDFInfo
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- CN106311747A CN106311747A CN201610702990.2A CN201610702990A CN106311747A CN 106311747 A CN106311747 A CN 106311747A CN 201610702990 A CN201610702990 A CN 201610702990A CN 106311747 A CN106311747 A CN 106311747A
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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
- 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
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/04—Thickness, gauge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/02—Tension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/12—Rolling load or rolling pressure; roll force
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/10—Roughness of roll surface
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Abstract
The invention relates to an aluminum foil for a lithium ion battery flexible package aluminum plastic film. The aluminum foil consists of the following alloy components in percentage by mass: 0.06-0.15% of Si, 1.2-1.7% of Fe, 0.01-0.15% of micro elements and the balance Al, wherein a single component of the micro elements accounts for 0.01-0.05%. A production process for the aluminum foil comprises the following steps of: step I, rough rolling; step II, intermediate rolling; step III, compounding; step IV, finish rolling; step V, slitting; step VI, annealing; and step VII, packaging and warehousing. In the rough rolling process and the intermediate rolling process, a metal temperature of a deformation zone can be increased to be about 200 DEG C or higher, i.e., intermediate recovery annealing is carried out; and a high-temperature short-time annealing process is adopted. The aluminum foil is applied to a lithium ion battery flexible package aluminum plastic film product, and heat sealing strength, swelling-breaking strength, interlayer strength, electrolyte tolerance and cold depth-scouring of the aluminum foil completely meet performance requirements of the lithium ion batteries.
Description
Technical field
The present invention relates to a kind of lithium ion battery flexible package aluminum plastic film aluminium foil and production technology thereof.
Background technology
Along with the resource exhaustion such as oil, natural gas, environmental requirement constantly improves, lithium-ion-power cell, large-scale place energy
Equipment, replaces traditional energy and replaces the disagreeableness Ni-H cell of environment, lead-acid battery simultaneously.
Lithium ion battery flexible packing material is made up of aluminium foil, multiple plastic foil and binding agent (including adhesive resin)
Composite soft packaging material, owing to it has higher stablizing to liquid chemical such as corrosive acid, alkali, salt or organic solvents
Property, its design, manufacture and application technology thereof are one of three big technical barriers that poly-lithium battery industry is to be solved, lithium from
Sub-battery flexible package aluminum plastic film usage amount increases rapidly, drives the consumption of lithium ion battery flexible package aluminum plastic film aluminium foil simultaneously
Amount, proposes requirements at the higher level to lithium ion battery flexible package aluminum plastic film aluminium foil quality.
Aluminium foil is by the material of metallic aluminium calendering, and aluminium foil quality is soft, and ductility is good, has compared with high moisture, resistance to
Corrosivity, oxygen flow, the bonding strength that wet rate is low, good, stable can processing forming, excellent two-sided plyability.By extensively
Packaging material as food, medicated cigarette, medicine, industry and household supplies etc..
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency, it is provided that a kind of fully meet lithium ion battery serviceability require
Lithium ion battery flexible package aluminum plastic film aluminium foil and production technology thereof.
The object of the present invention is achieved like this:
A kind of lithium ion battery flexible package aluminum plastic film aluminium foil, its alloy compositions is as follows: Si0.06 ~ 0.15, Fe1.2 ~ 1.7,
Trace element total 0.01 ~ 0.15, surplus are Al, and wherein the single composition of trace element is 0.01 ~ 0.05, and blank uses 8021
Alloy, tensile strength is 150 ~ 190MPa, and yield strength is 130 ~ 170MPa, and elongation percentage is more than 2.
The production technology of a kind of lithium ion battery flexible package aluminum plastic film aluminium foil, it is characterised in that it comprises the following steps:
Step one, roughing
Roughing is divided into two passages,
First passage aluminium foil inlet thickness of roughing is 300 μm, and aluminium foil exit thickness is 200 μm, and rolling mill speed is 700 ~ 800m/
Min, roll-force is 1200 ~ 1500 KN, and uncoiling tension is 35 ± 5N/mm2, coiling tension is 45 ± 5N/mm2, actual curve 16
± 2, roller 58% ± 6%, VC81% ± 8%, oil temperature 46 ± 4 DEG C, oil pressure 5 ± 1bar, oil mass 50% ± 10%, working roll roughness
0.2 ± 0.1 μm, work roll crown 20 ‰ ± 5 ‰；First passage aluminium foil temperature of roughing is maintained at 120 ~ 150 DEG C；
Second passage aluminium foil inlet thickness of roughing is 200 μm, and aluminium foil exit thickness is 120 μm, and rolling mill speed is 700 ~ 800m/
Min, roll-force is 1150 ~ 1450 KN, and uncoiling tension is 40 ± 5N/mm2, coiling tension is 40 ± 5N/mm2, actual curve 14
± 2, roller 14% ± 6%, VC81% ± 8%, oil temperature 45 ± 4 DEG C, oil pressure 5 ± 1bar, oil mass 50% ± 10%, working roll roughness
0.2 ± 0.1 μm, work roll crown 20 ‰ ± 5 ‰；Second passage aluminium foil temperature of roughing is maintained at 180 ~ 220 DEG C；
Step 2, in roll
Middle rolling aluminum foil inlet thickness is 120 μm, and aluminium foil exit thickness is 72 μm, and rolling mill speed is 450 ~ 550m/min, roll-force
Being 1200 ~ 1400 KN, uncoiling tension is 50 ± 5N/mm2, coiling tension is 42 ± 5N/mm2, actual curve 12 ± 2, roller 65%
± 6%, VC68% ± 8%, oil temperature 48 ± 4 DEG C, oil pressure 5 ± 1bar, oil mass 50% ± 10%, working roll roughness 0.15 ± 0.1 μm,
Work roll crown 20 ‰ ± 5 ‰；Middle rolling aluminum foil temperature is maintained at 280 ~ 300 DEG C；
Step 3, pairing
Volume two thickness is that the aluminium foil of 72 μm carries out pairing；
Step 4, finish rolling
Finish rolling aluminium foil inlet thickness is 72*2 μm, and aluminium foil exit thickness is 40*2 μm, and rolling mill speed is 300 ~ 400m/min, rolling
Power is 1450 ~ 1550 KN, and uncoiling tension is 50 ± 5N/mm2, coiling tension is 50 ± 5N/mm2, actual curve 10 ± 2, roller
68% ± 6%, VC82% ± 8%, oil temperature 38 ± 4 DEG C, oil pressure 5 ± 1bar, oil mass 45% ± 10%, working roll roughness 0.12 ± 0.1 μ
M, work roll crown 20 ‰ ± 5 ‰；Finish rolling aluminium foil temperature is maintained at 100 ~ 150 DEG C；
Step 5, cut
Step 6, annealing
Step 7, packaging warehouse-in.
Preferred as one, specifically comprising the following steps that of step 6 annealing
Temperature rise period, from room temperature to 400 DEG C, heating-up time 2 ~ 5 h；
Soaking period, it is incubated at 400 DEG C, temperature retention time 5 ~ 25h；
High temperature temperature-fall period, is cooled to 200 DEG C from 400 DEG C, temperature fall time 2 ~ 5 h；
In the low-temperature insulation stage, it is incubated at 200 DEG C, temperature retention time 10 ~ 45h
Low temperature temperature-fall period, is cooled to room temperature, temperature fall time 2 ~ 15 h from 200 DEG C.
Preferred as one, the production technology of a kind of lithium ion battery flexible package aluminum plastic film aluminium foil comprises the following steps:
Step one, roughing
First passage aluminium foil inlet thickness of roughing is 300 μm, and aluminium foil exit thickness is 200 μm, and rolling mill speed is 800m/min,
Roll-force is 1266KN, and uncoiling tension is 30.8N/mm2, coiling tension is 41.5N/mm2, actual curve 16, roller 58%,
VC81%, oil temperature 46.2 DEG C, oil pressure 5bar, oil mass 40%, working roll roughness 0.2 μm, work roll crown 20 ‰；Roughing first
Passage aluminium foil temperature is maintained at 140 DEG C；
Second passage aluminium foil inlet thickness of roughing is 200 μm, and aluminium foil exit thickness is 120 μm, and rolling mill speed is 750m/min,
Roll-force is 1205 KN, and uncoiling tension is 37.5N/mm2, coiling tension is 42N/mm2, actual curve 14, roller 14%,
VC81%, oil temperature 45.7 DEG C, oil pressure 5bar, oil mass 40%, working roll roughness 0.2 μm, work roll crown 20 ‰；Roughing second
Passage aluminium foil temperature is maintained at 200 DEG C；
Step 2, in roll
Middle rolling aluminum foil inlet thickness is 120 μm, and aluminium foil exit thickness is 72 μm, and rolling mill speed is 550m/min, and roll-force is
1227KN, uncoiling tension is 46.6N/mm2, coiling tension is 40.9N/mm2, actual curve 12, roller 65%, VC68%, oil temperature
48.5 DEG C, oil pressure 5bar, oil mass 40%, working roll roughness 0.15 μm, work roll crown 20 ‰；Middle rolling aluminum foil temperature is maintained at
290℃；
Step 3, pairing
Volume two thickness is that the aluminium foil of 72 μm carries out pairing；
Step 4, finish rolling
Finish rolling aluminium foil inlet thickness is 72*2 μm, and aluminium foil exit thickness is 40*2 μm, and rolling mill speed is 350m/min, and roll-force is
1516 KN, uncoiling tension is 47.6N/mm2, coiling tension is 51.4N/mm2, actual curve 10, roller 68%, VC82%, oil temperature
37.9 DEG C, oil pressure 5bar, oil mass 45%, working roll roughness 0.12 μm, work roll crown 20 ‰；Finish rolling aluminium foil temperature is maintained at
130℃；
Step 5, cut
Step 6, annealing
Step 7, packaging warehouse-in.
Preferred as one, the production technology of a kind of lithium ion battery flexible package aluminum plastic film aluminium foil comprises the following steps:
Step one, roughing
First passage aluminium foil inlet thickness of roughing is 300 μm, and aluminium foil exit thickness is 200 μm, and rolling mill speed is 798m/min,
Roll-force is 1468KN, and uncoiling tension is 36.2N/mm2, coiling tension is 49.5N/mm2, actual curve 14, roller 52%,
VC79%, oil temperature 49.4 DEG C, oil pressure 5bar, oil mass 60%, working roll roughness 0.2 μm, work roll crown 20 ‰；Roughing first
Passage aluminium foil temperature is maintained at 140 DEG C；
Second passage aluminium foil inlet thickness of roughing is 200 μm, and aluminium foil exit thickness is 120 μm, and rolling mill speed is 742m/min,
Roll-force is 1325 KN, and uncoiling tension is 40.7N/mm2, coiling tension is 43.6N/mm2, actual curve 13, roller 13%,
VC73%, oil temperature 47.9 DEG C, oil pressure 5bar, oil mass 60%, working roll roughness 0.2 μm, work roll crown 20 ‰；Roughing second
Passage aluminium foil temperature is maintained at 220 DEG C；
Step 2, in roll
Middle rolling aluminum foil inlet thickness is 120 μm, and aluminium foil exit thickness is 72 μm, and rolling mill speed is 498m/min, and roll-force is
1329KN, uncoiling tension is 53.4N/mm2, coiling tension is 47.9N/mm2, actual curve 11, roller 59%, VC60%, oil temperature
50.3 DEG C, oil pressure 5bar, oil mass 60%, working roll roughness 0.15 μm, work roll crown 20 ‰；Middle rolling aluminum foil temperature is maintained at
295℃；
Step 3, pairing
Volume two thickness is that the aluminium foil of 72 μm carries out pairing；
Step 4, finish rolling
Finish rolling aluminium foil inlet thickness is 72*2 μm, and aluminium foil exit thickness is 40*2 μm, and rolling mill speed is 348m/min, and roll-force is
1516 KN, uncoiling tension is 53.5N/mm2, coiling tension is 53.7N/mm2, actual curve 10, roller 64%, VC72%, oil temperature
41.9 DEG C, oil pressure 5bar, oil mass 55%, working roll roughness 0.12 μm, work roll crown 20 ‰；Finish rolling aluminium foil temperature is maintained at
135℃；
Step 5, cut
Step 6, annealing
Step 7, packaging warehouse-in.
Preferred as one, the production technology of a kind of lithium ion battery flexible package aluminum plastic film aluminium foil comprises the following steps:
Step one, roughing
First passage aluminium foil inlet thickness of roughing is 300 μm, and aluminium foil exit thickness is 200 μm, and rolling mill speed is 768m/min,
Roll-force is 1266KN, and uncoiling tension is 33.6N/mm2, coiling tension is 40.6N/mm2, actual curve 17, roller 55%,
VC81%, oil temperature 46.4 DEG C, oil pressure 5bar, oil mass 40%, working roll roughness 0.2 μm, work roll crown 20 ‰；Roughing first
Passage aluminium foil temperature is maintained at 118 DEG C；
Second passage aluminium foil inlet thickness of roughing is 200 μm, and aluminium foil exit thickness is 120 μm, and rolling mill speed is 712m/min,
Roll-force is 1205 KN, and uncoiling tension is 39.3N/mm2, coiling tension is 40N/mm2, actual curve 15, roller 13%,
VC81%, oil temperature 45.7 DEG C, oil pressure 5bar, oil mass 40%, working roll roughness 0.2 μm, work roll crown 20 ‰；Roughing second
Passage aluminium foil temperature is maintained at 195 DEG C；
Step 2, in roll
Middle rolling aluminum foil inlet thickness is 120 μm, and aluminium foil exit thickness is 72 μm, and rolling mill speed is 488m/min, and roll-force is
1227KN, uncoiling tension is 47.7N/mm2, coiling tension is 39..9N/mm2, actual curve 12, roller 65%, VC68%, oil temperature
48.5 DEG C, oil pressure 5bar, oil mass 40%, working roll roughness 0.15 μm, work roll crown 20 ‰；Middle rolling aluminum foil temperature is maintained at
285℃；
Step 3, pairing
Volume two thickness is that the aluminium foil of 72 μm carries out pairing；
Step 4, finish rolling
Finish rolling aluminium foil inlet thickness is 72*2 μm, and aluminium foil exit thickness is 40*2 μm, and rolling mill speed is 318m/min, and roll-force is
1516 KN, uncoiling tension is 47.1N/mm2, coiling tension is 49.5N/mm2, actual curve 10, roller 68%, VC82%, oil temperature
37.9 DEG C, oil pressure 5bar, oil mass 45%, working roll roughness 0.12 μm, work roll crown 20 ‰；Finish rolling aluminium foil temperature is maintained at
126℃；
Step 5, cut
Step 6, annealing
Step 7, packaging warehouse-in.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention uses 8021 alloys, DC aluminum foil stock, optimizes aluminum foil stock production technology and becomes alloy in the range of GB
Divide and adjust；Small lot middle temperature rolling technique is used during aluminum foil rolling；Using high annealing, there is recrystallization grain, simultaneously aluminum in aluminium foil
Paper tinsel swabbing reaches A level.Final aluminium foil products performance ductility is good, has relatively high moisture, corrosion resistance, and oxygen flow, wet rate are low, good
Good bonding strength is unaffected to ensure heat sealability, stable can processing forming, excellent two-sided plyability.
Use the aluminium foil that the present invention produces: thickness deviation controls in the range of ± 2%, aluminum foil thickness CPK value more than 1.3,
Within line template 10I, tensile strength is in the range of GB, and elongation percentage is better than GB；Pin hole is zero；Swabbing reaches A level；Aluminium foil produces
Quality is higher than similar aluminium foil products, fully meets the requirement that aluminium foil is used by lithium ion battery flexible package aluminum plastic film.
The aluminium foil produced by the present invention, for aluminum plastic film, structure PET25/DL3/AL40/DL3/PP40, lithium ion battery
Flexible package aluminum plastic film properties of product: heat seal strength, the intensity that rises brokenly, interlaminar strength, electrolyte toleration, cold punching fully meet lithium deeply
Ion battery serviceability requirement.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of annealing.
Fig. 2 is aluminum foil thickness and the variation diagram of tensile strength in the operation of rolling.
Detailed description of the invention
See Fig. 1 and Fig. 2, a kind of lithium ion battery flexible package aluminum plastic film aluminium foil that the present invention relates to, its alloy group
Divide (mass percent) as follows: Si0.06 ~ 0.15, Fe1.2 ~ 1.7, trace element total 0.01 ~ 0.15, surplus are Al, wherein
The single composition of trace element is 0.01 ~ 0.05, and trace element includes Cu, Zn, Mn, Mg, Ti, Ag, Bi, Co, Li, Sr, Zr etc..
Blank uses 8021 alloys, and sotck thinkness is 0.3mm, and tensile strength is 150 ~ 190MPa, and yield strength is 130 ~
170MPa, elongation percentage is more than 2.The final products tensile strength of a kind of lithium ion battery flexible package aluminum plastic film aluminium foil is 60 ~
110MPa, yield strength is 35 ~ 80MPa, and elongation percentage is more than 10, swabbing grade A level.
8021 alloy eutectics or close to eutectic composition, high solid solution and the constituent granule Han Fe, broken leads to containing Fe granule
Crossing rolling and form tiny diffusing particle, these granules can be stablized crystal grain and help formation thin brilliant, and the Si of low content forces to be formed
Optimum structure, this with 8011,1xxx type alloy significantly different.
The odds ratio conventional alloys such as 1145 and 1235 of 8021 alloy foils has higher intensity and percentage elongation, permits
Permitted when higher machine acceleration and conversion operation more flexible.Thinner product is likely obtained in the case of not losing performance.Carefully
Brilliant allow by reducing slide surface pin hole and dark face is wrinkling substantially reduces pinhole number.Owing to refinement distressed structure improves appearance
Be uniformly distributed.
A kind of production technology of lithium ion battery flexible package aluminum plastic film aluminium foil, it comprises the following steps:
Step one, roughing
Roughing is divided into two passages,
Passage 1 ~ passage 2 in Fig. 2, first passage aluminium foil inlet thickness of roughing is 300 μm, and aluminium foil exit thickness is 200 μm, rolls
Motor speed is 700 ~ 800m/min, and roll-force is 1200 ~ 1500 KN, and uncoiling tension is 35 ± 5N/mm2, coiling tension is 45 ±
5N/mm2, actual curve 16 ± 2, roller 58% ± 6%, VC81% ± 8%, oil temperature 46 ± 4 DEG C, oil pressure 5 ± 1bar, oil mass 50% ±
10%, working roll roughness 0.2 ± 0.1 μm, work roll crown 20 ‰ ± 5 ‰；First passage aluminium foil temperature of roughing is maintained at
120~150℃。
Above-mentioned actual curve 16 ± 2 refers to the plate sigmoid curves changing value of reality, and roller 58% ± 6% refers to the flexure of roller
Deformation values, VC81% ± 8% refers to the deformation values of variable-crown roll (VC roller).
Passage 2 ~ passage 3 in Fig. 2, second passage aluminium foil inlet thickness of roughing is 200 μm, and aluminium foil exit thickness is 120 μ
M, rolling mill speed is 700 ~ 800m/min, and roll-force is 1150 ~ 1450 KN, and uncoiling tension is 40 ± 5N/mm2, coiling tension is
40±5N/mm2, actual curve 14 ± 2, roller 14% ± 6%, VC81% ± 8%, oil temperature 45 ± 4 DEG C, oil pressure 5 ± 1bar, oil mass
50% ± 10%, working roll roughness 0.2 ± 0.1 μm, work roll crown 20 ‰ ± 5 ‰；Second passage aluminium foil temperature of roughing is protected
Hold at 180 ~ 220 DEG C.
Step 2, in roll
Passage 3 ~ passage 4 in Fig. 2, middle rolling aluminum foil inlet thickness is 120 μm, and aluminium foil exit thickness is 72 μm, and rolling mill speed is 450
~ 550m/min, roll-force is 1200 ~ 1400 KN, and uncoiling tension is 50 ± 5N/mm2, coiling tension is 42 ± 5N/mm2, actual
Curve 12 ± 2, roller 65% ± 6%, VC68% ± 8%, oil temperature 48 ± 4 DEG C, oil pressure 5 ± 1bar, oil mass 50% ± 10%, working roll is thick
Rugosity 0.15 ± 0.1 μm, work roll crown 20 ‰ ± 5 ‰；Middle rolling aluminum foil temperature is maintained at 280 ~ 300 DEG C.
Step 3, pairing
Volume two thickness is that the aluminium foil of 72 μm carries out pairing；
Step 4, finish rolling
Finish rolling aluminium foil inlet thickness is 72*2 μm, and aluminium foil exit thickness is 40*2 μm, and rolling mill speed is 300 ~ 400m/min, rolling
Power is 1450 ~ 1550 KN, and uncoiling tension is 50 ± 5N/mm2, coiling tension is 50 ± 5N/mm2, actual curve 10 ± 2, roller
68% ± 6%, VC82% ± 8%, oil temperature 38 ± 4 DEG C, oil pressure 5 ± 1bar, oil mass 45% ± 10%, working roll roughness 0.12 ± 0.1 μ
M, work roll crown 20 ‰ ± 5 ‰；Finish rolling aluminium foil temperature is maintained at 100 ~ 150 DEG C.
Step 5, cut
Step 6, annealing
Aluminum foil coil is put into drying room make annealing treatment, see Fig. 1, specifically comprising the following steps that of annealing
AB section in figure: temperature rise period, from room temperature to 400 DEG C, heating-up time 2 ~ 5 h；
BC section in figure: soaking period, is incubated at 400 DEG C, temperature retention time 5 ~ 25h；
CD section in figure: high temperature temperature-fall period, is cooled to 200 DEG C from 400 DEG C, temperature fall time 2 ~ 5 h；
DE section in figure: low-temperature insulation stage, is incubated at 200 DEG C, temperature retention time 10 ~ 45h
EF section in figure: low temperature temperature-fall period, is cooled to room temperature, temperature fall time 2 ~ 15 h from 200 DEG C.
Step 7, packaging warehouse-in.
The feature of above-mentioned processing step is as follows:
The control of roughing thickness relies primarily on roll-force and backward pull.Aluminum Strip Rolling, thinning the relying primarily on of Aluminum sheets to be made is rolled
Power processed, the control mode that therefore thickness of slab automatic control mode is is AGC main body with permanent roll gap, even if roll-force change, adjust at any time
Whole roll gap makes roll gap keep certain value also can obtain the Strip of consistency of thickness, Automatic Flatness Control system AFC, has three part groups
Become, mainly include flatness detection device, flatness detection signal feedback and control system, profile regulation device, jointly make with VC roller
With, it is thus achieved that the band guarantee that template is smooth.
In roll, its rolling feature of finish rolling has been totally different from the rolling of Aluminum Plate and Strip, has the particularity of aluminum foil rolling, aluminum
Paper tinsel is rolling to middle finish rolling, due to the very thin thickness of aluminium foil, during rolling, increases roll-force, makes roll produce elastic deformation ratio and is rolled
Prepared material produces plastic deformation and is easier to, and the elastic flattening of roll can not be ignored, and the bullet roll compacting of roll is flat determines aluminum
In paper tinsel rolling, roll-force has not had as rolling sheets effect, aluminum foil rolling usually under the conditions of constant pressure without roller
Seam rolling, adjusts aluminum foil thickness and relies primarily on adjustment backward pull and roll speed.Ply rolling is big less than 0.012mm(thickness for thickness
The little diameter with working roll about) ultra thin Aluminum foil, due to the elastic flattening of roll, be extremely difficult by the method for uni-tension rolling
, therefore use the method that pairing rolls, i.e. add lubricating oil, the method carrying out the most altogether rolling in the middle of two aluminium foils
(also referred to as ply rolling).Ply rolling is possible not only to roll out the most fertile ultra thin Aluminum foil of uni-tension rolling, it is also possible to reduces broken belt number of times, carries
High labor productivity, uses this kind of technique to can manufacture out the machine glazing aluminium foil of 0.0045mm～0.050mm.Equipment is all simultaneously
Be furnished with AGC, AFC system ensures to obtain the aluminium foil that consistency of thickness template is smooth.
The present invention uses small tension receiving coil, heavy reduction, at a high speed, and process route, on the other hand by hot rolling technology " continuous rolling "
It is applied to aluminum foil rolling technique, is formed " small lot, continuous rolling, band warm-rolling system ", at high speed rolling, along with carrying of mill speed
Height, the temperature of contact in rolling opens height, can rise to about 200 DEG C or above (thick according to the metal temperature calculating deformed area
Roll second passage aluminium foil temperature and middle rolling aluminum foil temperature), be equivalent to carry out recovering in the middle of once annealing, thus cause rolling
The work softening phenomenon of material, small lot, continuous rolling, band warm-rolling system, reduce intermediate annealing, reduce aluminum foil coil strength stress and become
Change value, finally improves the mechanical performance of aluminium foil, hence it is evident that improve the pinhole number of aluminium foil.
The purpose of aluminum foil annealing: being usually present residual stress in the semi-finished product or product of metal material, composition is uneven,
Tissue is unstable and surface quality is the best, such as defects such as foil surface and oil contaminants.These defects have a strong impact on the processing performance of material
And serviceability, as plasticity is low, corrosion-resistant, mechanical performance are bad, poor surface smoothness and do not meet user's requirement etc..
Eliminate or reduce these defects to improve processing performance and the serviceability of material, it is necessary to annealing.Annealing main purpose,
Reduce tensile strength, improve elongation percentage, oil removing annealing, it is simply that be to be heated to suitable temperature with certain firing rate, keep
Certain time (referred to as insulation), with a kind of technical process of the cooling of speed slowly.
Annealing theory: aluminium foil by cold roller and deformed and create processing hardening, by annealing reduce tensile strength so that move back
During fire different according to the height of heating-up temperature, the change procedure of its tissue and performance can be divided into recovery and recrystallization, crystal grain to grow up three
The individual stage.
Aluminium alloy is after plastic deformation, and dislocation density significantly raises, and intensity and hardness are greatly improved.Further, since sliding
Rotating, crystal orientation changes, and crystal grain also elongates along machine direction, is deformed texture or processing texture.
Recovery stage: when heating-up temperature is the highest, say, that heating-up temperature starts recrystallization less than deformable metal
Temperature time, owing to atom action ability is little, short-range diffusion motion can only be made, now can only eliminate the twisted of lattice and
Distortion, but new recrystal grain can not be formed.Metal inside tissue is unchanged.Now, intensity and the hardness of metal slightly drops
Low, plasticity slightly improves, but, in Recovery Process, some physical property of metal but changes significantly, such as metal
Resistance and internal stress there occurs significantly decline.This stage substantially also maintains the main spy of flow harden state metal
Levy.
The recrystallization stage: every on the matrix of deformable metal or alloy, annealed heating and define by new crystalline substance
The microscopic structure that grain is constituted is called recrystallization, is also called primary recrystallization or processing recrystallization.The recrystallization of cold deformation metal
Being a nucleation and growth process, the distortion of lattice of new crystal grain nucleus is less than the metal of surrounding, is the rock-steady structure that free energy is low.Institute
Can gradually annex the high matrix of free energy with it and grow up that (power that crystal grain is grown up is the fall of the strain energy that machining deformation causes
Low).Therefore also known as processing recrystallization, the process that some recrystal grain is annexed the most adjacent crystal grain and grown up is called gathering again
Crystallization, its power is different from processing recrystallization, is not strain, but the surface of crystal grain can reduce.It must be noted that recrystallization mistake
The equi-axed crystal that Cheng Bingwei is formed is identical in lattice types and original crystal grain, only eliminates various plastic deformation and makes
Some crystal defects become.
Crystal grain is grown up after recrystallization, typically can obtain thin and uniform equi-axed crystal, if heating-up temperature is the highest, or
Heat time heating time is long, and the crystal grain after recrystallization starts to assemble.It annexes, by the big crystal grain that surface can be little, the little crystalline substance that surface can be big
Grain, the process that this crystal grain is grown up, referred to as collective recrystallization.From the point of view of thermodynamic condition, the roughening of crystal grain can reduce surface
Energy.Metal or alloy is made to be in the state more stable, free energy is relatively low.In the later stage of collective recrystallization, crystal grain is uniformly grown
After poised state, the most no longer growing up, each crystal grain ratio is more uniform.
Performance change during Annealing Property change metal annealing is just the opposite with the change that cold deformation causes, and intensity index drops
Low, plasticity index increases, and process based prediction model state before deformation changes.When annealing temperature is less than recrystallization temperature, by force
The reduction of degree and the raising of plasticity are little, because distortion of lattice and the microstress of metal can only eliminate one in Recovery Process
Point.The distortion of lattice part playing a major role processing hardening, starts to vary less in the past in recrystallization, or occurs hardly
Change.Therefore, mechanical performance is little in the reply degree of recovery stage, and in the recrystallization stage, deformed grains is entirely nothing
The new crystal grain of distortion replaces, and the fibrous tissue that the crystal grain making metal structure be elongated is formed is transformed into by the recrystallization of isometry
The recrystallized structure that crystal grain is formed, intermetallic composite coating hardening phenomenon eliminates, and intensity and the hardness of metal drastically decline, and plasticity is obvious
Rise.
Annealing temperature sets: annealing purpose is fall performance and oil removing.Other aluminium foils manufacturer both at home and abroad, when using low temperature long
Between annealing process, i.e. ensureing on the premise of deoiling effect, temperature is the lowest more good, does not consider further that aluminium foil is tied the most again
Crystalline substance, carries out incomplete recrystallized annealing, and final aluminium foil products elongation percentage is low, do not reach customer requirement.
The present invention uses annealing process between high temperature, short time, annealing to reach 8021 alloys, the recrystallization temperature of 40um aluminium foil, produces
Product mechanical performance fully meets customer requirement, and the particularly elongation percentage of aluminium foil now writes raising, and last swabbing uses GB absorbent cotton
Viscous A level water, oil removing is clean, and swabbing is spread completely, A level water constituent: distilled water.
Embodiment 1,
A kind of lithium ion battery flexible package aluminum plastic film aluminium foil, its alloy compositions (mass percent) is as follows: Si0.06,
Fe1.2, Cu0.008, surplus are Al.Blank specification is 0.3mm*1280mm, and tensile strength is 181MPa, and yield strength is
160MPa, elongation percentage 2.75.
The final products tensile strength of a kind of lithium ion battery flexible package aluminum plastic film aluminium foil is 90MPa, and yield strength is
41MPa, elongation percentage is 12.6, swabbing grade A level, final products specification 40um*300mm.
A kind of production technology of lithium ion battery flexible package aluminum plastic film aluminium foil, it comprises the following steps:
Step one, roughing
First passage aluminium foil inlet thickness of roughing is 300 μm, and aluminium foil exit thickness is 200 μm, and rolling mill speed is 800m/min,
Roll-force is 1266KN, and uncoiling tension is 30.8N/mm2, coiling tension is 41.5N/mm2, actual curve 16, roller 58%,
VC81%, oil temperature 46.2 DEG C, oil pressure 5bar, oil mass 40%, working roll roughness 0.2 μm, work roll crown 20 ‰；Roughing first
Passage aluminium foil temperature is maintained at 140 DEG C.
Second passage aluminium foil inlet thickness of roughing is 200 μm, and aluminium foil exit thickness is 120 μm, and rolling mill speed is 750m/
Min, roll-force is 1205 KN, and uncoiling tension is 37.5N/mm2, coiling tension is 42N/mm2, actual curve 14, roller 14%,
VC81%, oil temperature 45.7 DEG C, oil pressure 5bar, oil mass 40%, working roll roughness 0.2 μm, work roll crown 20 ‰；Roughing second
Passage aluminium foil temperature is maintained at 200 DEG C.
Step 2, in roll
Middle rolling aluminum foil inlet thickness is 120 μm, and aluminium foil exit thickness is 72 μm, and rolling mill speed is 550m/min, and roll-force is
1227KN, uncoiling tension is 46.6N/mm2, coiling tension is 40.9N/mm2, actual curve 12, roller 65%, VC68%, oil temperature
48.5 DEG C, oil pressure 5bar, oil mass 40%, working roll roughness 0.15 μm, work roll crown 20 ‰；Middle rolling aluminum foil temperature is maintained at
290℃。
Step 3, pairing
Volume two thickness is that the aluminium foil of 72 μm carries out pairing；
Step 4, finish rolling
Finish rolling aluminium foil inlet thickness is 72*2 μm, and aluminium foil exit thickness is 40*2 μm, and rolling mill speed is 350m/min, and roll-force is
1516 KN, uncoiling tension is 47.6N/mm2, coiling tension is 51.4N/mm2, actual curve 10, roller 68%, VC82%, oil temperature
37.9 DEG C, oil pressure 5bar, oil mass 45%, working roll roughness 0.12 μm, work roll crown 20 ‰；Finish rolling aluminium foil temperature is maintained at
130℃。
Step 5, cut
Step 6, annealing
Temperature rise period, from room temperature to 400 DEG C, heating-up time 2 h；
Soaking period, it is incubated at 400 DEG C, temperature retention time 13h；
High temperature temperature-fall period, is cooled to 200 DEG C from 400 DEG C, temperature fall time 2 h；
In the low-temperature insulation stage, it is incubated at 200 DEG C, temperature retention time 10h
Low temperature temperature-fall period, is cooled to room temperature, temperature fall time 2 h from 200 DEG C.
Step 7, packaging warehouse-in.
Embodiment 2,
A kind of lithium ion battery flexible package aluminum plastic film aluminium foil, its alloy compositions (mass percent) is as follows: Si0.07,
Fe1.25, Cu0.009, Zn0.01, surplus are Al.Blank specification is 0.3mm*1650mm, and tensile strength is 187MPa, and surrender is strong
Degree is 153MPa, elongation percentage 2.5.
The final products tensile strength of a kind of lithium ion battery flexible package aluminum plastic film aluminium foil is 87MPa, and yield strength is
43MPa, elongation percentage is 11.3, swabbing grade A level, final products specification 40um*800mm.
A kind of production technology of lithium ion battery flexible package aluminum plastic film aluminium foil, it comprises the following steps:
Step one, roughing
First passage aluminium foil inlet thickness of roughing is 300 μm, and aluminium foil exit thickness is 200 μm, and rolling mill speed is 798m/min,
Roll-force is 1468KN, and uncoiling tension is 36.2N/mm2, coiling tension is 49.5N/mm2, actual curve 14, roller 52%,
VC79%, oil temperature 49.4 DEG C, oil pressure 5bar, oil mass 60%, working roll roughness 0.2 μm, work roll crown 20 ‰；Roughing first
Passage aluminium foil temperature is maintained at 140 DEG C.
Second passage aluminium foil inlet thickness of roughing is 200 μm, and aluminium foil exit thickness is 120 μm, and rolling mill speed is 742m/
Min, roll-force is 1325 KN, and uncoiling tension is 40.7N/mm2, coiling tension is 43.6N/mm2, actual curve 13, roller
13%, VC73%, oil temperature 47.9 DEG C, oil pressure 5bar, oil mass 60%, working roll roughness 0.2 μm, work roll crown 20 ‰；Roughing
Two passage aluminium foil temperature are maintained at 220 DEG C.
Step 2, in roll
Middle rolling aluminum foil inlet thickness is 120 μm, and aluminium foil exit thickness is 72 μm, and rolling mill speed is 498m/min, and roll-force is
1329KN, uncoiling tension is 53.4N/mm2, coiling tension is 47.9N/mm2, actual curve 11, roller 59%, VC60%, oil temperature
50.3 DEG C, oil pressure 5bar, oil mass 60%, working roll roughness 0.15 μm, work roll crown 20 ‰；Middle rolling aluminum foil temperature is maintained at
295℃。
Step 3, pairing
Volume two thickness is that the aluminium foil of 72 μm carries out pairing；
Step 4, finish rolling
Finish rolling aluminium foil inlet thickness is 72*2 μm, and aluminium foil exit thickness is 40*2 μm, and rolling mill speed is 348m/min, and roll-force is
1516 KN, uncoiling tension is 53.5N/mm2, coiling tension is 53.7N/mm2, actual curve 10, roller 64%, VC72%, oil temperature
41.9 DEG C, oil pressure 5bar, oil mass 55%, working roll roughness 0.12 μm, work roll crown 20 ‰；Finish rolling aluminium foil temperature is maintained at
135℃。
Step 5, cut
Step 6, annealing
Temperature rise period, from room temperature to 400 DEG C, heating-up time 3 h；
Soaking period, it is incubated at 400 DEG C, temperature retention time 21h；
High temperature temperature-fall period, is cooled to 200 DEG C from 400 DEG C, temperature fall time 4h；
In the low-temperature insulation stage, it is incubated at 200 DEG C, temperature retention time 20h
Low temperature temperature-fall period, is cooled to room temperature, temperature fall time 7 h from 200 DEG C.
Step 7, packaging warehouse-in.
Embodiment 3,
A kind of lithium ion battery flexible package aluminum plastic film aluminium foil, its alloy compositions (mass percent) is as follows: Si0.15,
Fe1.7, Cu0.012, Zn0.01, surplus are Al.Blank specification is 0.3mm*1200mm, and tensile strength is 176MPa, and surrender is strong
Degree is 164MPa, elongation percentage 2.95.
The final products tensile strength of a kind of lithium ion battery flexible package aluminum plastic film aluminium foil is 81MPa, and yield strength is
39MPa, elongation percentage is 13.6, swabbing grade A level, final products specification 40um*570mm.
A kind of production technology of lithium ion battery flexible package aluminum plastic film aluminium foil, it comprises the following steps:
Step one, roughing
First passage aluminium foil inlet thickness of roughing is 300 μm, and aluminium foil exit thickness is 200 μm, and rolling mill speed is 768m/min,
Roll-force is 1266KN, and uncoiling tension is 33.6N/mm2, coiling tension is 40.6N/mm2, actual curve 17, roller 55%,
VC81%, oil temperature 46.4 DEG C, oil pressure 5bar, oil mass 40%, working roll roughness 0.2 μm, work roll crown 20 ‰；Roughing first
Passage aluminium foil temperature is maintained at 118 DEG C.
Second passage aluminium foil inlet thickness of roughing is 200 μm, and aluminium foil exit thickness is 120 μm, and rolling mill speed is 712m/
Min, roll-force is 1205 KN, and uncoiling tension is 39.3N/mm2, coiling tension is 40N/mm2, actual curve 15, roller 13%,
VC81%, oil temperature 45.7 DEG C, oil pressure 5bar, oil mass 40%, working roll roughness 0.2 μm, work roll crown 20 ‰；Roughing second
Passage aluminium foil temperature is maintained at 195 DEG C.
Step 2, in roll
Middle rolling aluminum foil inlet thickness is 120 μm, and aluminium foil exit thickness is 72 μm, and rolling mill speed is 488m/min, and roll-force is
1227KN, uncoiling tension is 47.7N/mm2, coiling tension is 39..9N/mm2, actual curve 12, roller 65%, VC68%, oil temperature
48.5 DEG C, oil pressure 5bar, oil mass 40%, working roll roughness 0.15 μm, work roll crown 20 ‰；Middle rolling aluminum foil temperature is maintained at
285℃。
Step 3, pairing
Volume two thickness is that the aluminium foil of 72 μm carries out pairing；
Step 4, finish rolling
Finish rolling aluminium foil inlet thickness is 72*2 μm, and aluminium foil exit thickness is 40*2 μm, and rolling mill speed is 318m/min, and roll-force is
1516 KN, uncoiling tension is 47.1N/mm2, coiling tension is 49.5N/mm2, actual curve 10, roller 68%, VC82%, oil temperature
37.9 DEG C, oil pressure 5bar, oil mass 45%, working roll roughness 0.12 μm, work roll crown 20 ‰；Finish rolling aluminium foil temperature is maintained at
126℃。
Step 5, cut
Step 6, annealing
Temperature rise period, from room temperature to 400 DEG C, heating-up time 5h；
Soaking period, it is incubated at 400 DEG C, temperature retention time 25h；
High temperature temperature-fall period, is cooled to 200 DEG C from 400 DEG C, temperature fall time 5h；
In the low-temperature insulation stage, it is incubated at 200 DEG C, temperature retention time 45h
Low temperature temperature-fall period, is cooled to room temperature, temperature fall time 15 h from 200 DEG C.
Step 7, packaging warehouse-in.
Claims (6)
1. a lithium ion battery flexible package aluminum plastic film aluminium foil, it is characterised in that its alloy compositions is as follows: Si0.06 ~
0.15, Fe1.2 ~ 1.7, trace element add up to 0.01 ~ 0.15, surplus is Al, wherein the single composition of trace element be 0.01 ~
0.05, blank uses 8021 alloys, and tensile strength is 150 ~ 190MPa, and yield strength is 130 ~ 170MPa, and elongation percentage is more than 2.
2. the production technology of a lithium ion battery flexible package aluminum plastic film aluminium foil, it is characterised in that it comprises the following steps:
Step one, roughing
Roughing is divided into two passages,
First passage aluminium foil inlet thickness of roughing is 300 μm, and aluminium foil exit thickness is 200 μm, and rolling mill speed is 700 ~ 800m/
Min, roll-force is 1200 ~ 1500 KN, and uncoiling tension is 35 ± 5N/mm2, coiling tension is 45 ± 5N/mm2, actual curve 16
± 2, roller 58% ± 6%, VC81% ± 8%, oil temperature 46 ± 4 DEG C, oil pressure 5 ± 1bar, oil mass 50% ± 10%, working roll roughness
0.2 ± 0.1 μm, work roll crown 20 ‰ ± 5 ‰；First passage aluminium foil temperature of roughing is maintained at 120 ~ 150 DEG C；
Second passage aluminium foil inlet thickness of roughing is 200 μm, and aluminium foil exit thickness is 120 μm, and rolling mill speed is 700 ~ 800m/
Min, roll-force is 1150 ~ 1450 KN, and uncoiling tension is 40 ± 5N/mm2, coiling tension is 40 ± 5N/mm2, actual curve 14
± 2, roller 14% ± 6%, VC81% ± 8%, oil temperature 45 ± 4 DEG C, oil pressure 5 ± 1bar, oil mass 50% ± 10%, working roll roughness
0.2 ± 0.1 μm, work roll crown 20 ‰ ± 5 ‰；Second passage aluminium foil temperature of roughing is maintained at 180 ~ 220 DEG C；
Step 2, in roll
Middle rolling aluminum foil inlet thickness is 120 μm, and aluminium foil exit thickness is 72 μm, and rolling mill speed is 450 ~ 550m/min, roll-force
Being 1200 ~ 1400 KN, uncoiling tension is 50 ± 5N/mm2, coiling tension is 42 ± 5N/mm2, actual curve 12 ± 2, roller 65%
± 6%, VC68% ± 8%, oil temperature 48 ± 4 DEG C, oil pressure 5 ± 1bar, oil mass 50% ± 10%, working roll roughness 0.15 ± 0.1 μm,
Work roll crown 20 ‰ ± 5 ‰；Middle rolling aluminum foil temperature is maintained at 280 ~ 300 DEG C；
Step 3, pairing
Volume two thickness is that the aluminium foil of 72 μm carries out pairing；
Step 4, finish rolling
Finish rolling aluminium foil inlet thickness is 72*2 μm, and aluminium foil exit thickness is 40*2 μm, and rolling mill speed is 300 ~ 400m/min, rolling
Power is 1450 ~ 1550 KN, and uncoiling tension is 50 ± 5N/mm2, coiling tension is 50 ± 5N/mm2, actual curve 10 ± 2, roller
68% ± 6%, VC82% ± 8%, oil temperature 38 ± 4 DEG C, oil pressure 5 ± 1bar, oil mass 45% ± 10%, working roll roughness 0.12 ± 0.1 μ
M, work roll crown 20 ‰ ± 5 ‰；Finish rolling aluminium foil temperature is maintained at 100 ~ 150 DEG C；
Step 5, cut
Step 6, annealing
Step 7, packaging warehouse-in.
The production technology of a kind of lithium ion battery flexible package aluminum plastic film aluminium foil the most according to claim 2, its feature exists
In specifically comprising the following steps that of step 6 annealing
Temperature rise period, from room temperature to 400 DEG C, heating-up time 2 ~ 5 h；
Soaking period, it is incubated at 400 DEG C, temperature retention time 5 ~ 25h；
High temperature temperature-fall period, is cooled to 200 DEG C from 400 DEG C, temperature fall time 2 ~ 5 h；
In the low-temperature insulation stage, it is incubated at 200 DEG C, temperature retention time 10 ~ 45h
Low temperature temperature-fall period, is cooled to room temperature, temperature fall time 2 ~ 15 h from 200 DEG C.
The production technology of a kind of lithium ion battery flexible package aluminum plastic film aluminium foil the most according to claim 2, its feature exists
Comprise the following steps in it:
Step one, roughing
First passage aluminium foil inlet thickness of roughing is 300 μm, and aluminium foil exit thickness is 200 μm, and rolling mill speed is 800m/min,
Roll-force is 1266KN, and uncoiling tension is 30.8N/mm2, coiling tension is 41.5N/mm2, actual curve 16, roller 58%,
VC81%, oil temperature 46.2 DEG C, oil pressure 5bar, oil mass 40%, working roll roughness 0.2 μm, work roll crown 20 ‰；Roughing first
Passage aluminium foil temperature is maintained at 140 DEG C；
Second passage aluminium foil inlet thickness of roughing is 200 μm, and aluminium foil exit thickness is 120 μm, and rolling mill speed is 750m/min,
Roll-force is 1205 KN, and uncoiling tension is 37.5N/mm2, coiling tension is 42N/mm2, actual curve 14, roller 14%,
VC81%, oil temperature 45.7 DEG C, oil pressure 5bar, oil mass 40%, working roll roughness 0.2 μm, work roll crown 20 ‰；Roughing second
Passage aluminium foil temperature is maintained at 200 DEG C；
Step 2, in roll
Middle rolling aluminum foil inlet thickness is 120 μm, and aluminium foil exit thickness is 72 μm, and rolling mill speed is 550m/min, and roll-force is
1227KN, uncoiling tension is 46.6N/mm2, coiling tension is 40.9N/mm2, actual curve 12, roller 65%, VC68%, oil temperature
48.5 DEG C, oil pressure 5bar, oil mass 40%, working roll roughness 0.15 μm, work roll crown 20 ‰；Middle rolling aluminum foil temperature is maintained at
290℃；
Step 3, pairing
Volume two thickness is that the aluminium foil of 72 μm carries out pairing；
Step 4, finish rolling
Finish rolling aluminium foil inlet thickness is 72*2 μm, and aluminium foil exit thickness is 40*2 μm, and rolling mill speed is 350m/min, and roll-force is
1516 KN, uncoiling tension is 47.6N/mm2, coiling tension is 51.4N/mm2, actual curve 10, roller 68%, VC82%, oil temperature
37.9 DEG C, oil pressure 5bar, oil mass 45%, working roll roughness 0.12 μm, work roll crown 20 ‰；Finish rolling aluminium foil temperature is maintained at
130℃；
Step 5, cut
Step 6, annealing
Step 7, packaging warehouse-in.
The production technology of a kind of lithium ion battery flexible package aluminum plastic film aluminium foil the most according to claim 2, its feature exists
Comprise the following steps in it:
Step one, roughing
First passage aluminium foil inlet thickness of roughing is 300 μm, and aluminium foil exit thickness is 200 μm, and rolling mill speed is 798m/min,
Roll-force is 1468KN, and uncoiling tension is 36.2N/mm2, coiling tension is 49.5N/mm2, actual curve 14, roller 52%,
VC79%, oil temperature 49.4 DEG C, oil pressure 5bar, oil mass 60%, working roll roughness 0.2 μm, work roll crown 20 ‰；Roughing first
Passage aluminium foil temperature is maintained at 140 DEG C；
Second passage aluminium foil inlet thickness of roughing is 200 μm, and aluminium foil exit thickness is 120 μm, and rolling mill speed is 742m/min,
Roll-force is 1325 KN, and uncoiling tension is 40.7N/mm2, coiling tension is 43.6N/mm2, actual curve 13, roller 13%,
VC73%, oil temperature 47.9 DEG C, oil pressure 5bar, oil mass 60%, working roll roughness 0.2 μm, work roll crown 20 ‰；Roughing second
Passage aluminium foil temperature is maintained at 220 DEG C；
Step 2, in roll
Middle rolling aluminum foil inlet thickness is 120 μm, and aluminium foil exit thickness is 72 μm, and rolling mill speed is 498m/min, and roll-force is
1329KN, uncoiling tension is 53.4N/mm2, coiling tension is 47.9N/mm2, actual curve 11, roller 59%, VC60%, oil temperature
50.3 DEG C, oil pressure 5bar, oil mass 60%, working roll roughness 0.15 μm, work roll crown 20 ‰；Middle rolling aluminum foil temperature is maintained at
295℃；
Step 3, pairing
Volume two thickness is that the aluminium foil of 72 μm carries out pairing；
Step 4, finish rolling
Finish rolling aluminium foil inlet thickness is 72*2 μm, and aluminium foil exit thickness is 40*2 μm, and rolling mill speed is 348m/min, and roll-force is
1516 KN, uncoiling tension is 53.5N/mm2, coiling tension is 53.7N/mm2, actual curve 10, roller 64%, VC72%, oil temperature
41.9 DEG C, oil pressure 5bar, oil mass 55%, working roll roughness 0.12 μm, work roll crown 20 ‰；Finish rolling aluminium foil temperature is maintained at
135℃；
Step 5, cut
Step 6, annealing
Step 7, packaging warehouse-in.
The production technology of a kind of lithium ion battery flexible package aluminum plastic film aluminium foil the most according to claim 2, its feature exists
Comprise the following steps in it:
Step one, roughing
First passage aluminium foil inlet thickness of roughing is 300 μm, and aluminium foil exit thickness is 200 μm, and rolling mill speed is 768m/min,
Roll-force is 1266KN, and uncoiling tension is 33.6N/mm2, coiling tension is 40.6N/mm2, actual curve 17, roller 55%,
VC81%, oil temperature 46.4 DEG C, oil pressure 5bar, oil mass 40%, working roll roughness 0.2 μm, work roll crown 20 ‰；Roughing first
Passage aluminium foil temperature is maintained at 118 DEG C；
Second passage aluminium foil inlet thickness of roughing is 200 μm, and aluminium foil exit thickness is 120 μm, and rolling mill speed is 712m/min,
Roll-force is 1205 KN, and uncoiling tension is 39.3N/mm2, coiling tension is 40N/mm2, actual curve 15, roller 13%,
VC81%, oil temperature 45.7 DEG C, oil pressure 5bar, oil mass 40%, working roll roughness 0.2 μm, work roll crown 20 ‰；Roughing second
Passage aluminium foil temperature is maintained at 195 DEG C；
Step 2, in roll
Middle rolling aluminum foil inlet thickness is 120 μm, and aluminium foil exit thickness is 72 μm, and rolling mill speed is 488m/min, and roll-force is
1227KN, uncoiling tension is 47.7N/mm2, coiling tension is 39..9N/mm2, actual curve 12, roller 65%, VC68%, oil temperature
48.5 DEG C, oil pressure 5bar, oil mass 40%, working roll roughness 0.15 μm, work roll crown 20 ‰；Middle rolling aluminum foil temperature is maintained at
285℃；
Step 3, pairing
Volume two thickness is that the aluminium foil of 72 μm carries out pairing；
Step 4, finish rolling
Finish rolling aluminium foil inlet thickness is 72*2 μm, and aluminium foil exit thickness is 40*2 μm, and rolling mill speed is 318m/min, and roll-force is
1516 KN, uncoiling tension is 47.1N/mm2, coiling tension is 49.5N/mm2, actual curve 10, roller 68%, VC82%, oil temperature
37.9 DEG C, oil pressure 5bar, oil mass 45%, working roll roughness 0.12 μm, work roll crown 20 ‰；Finish rolling aluminium foil temperature is maintained at
126℃；
Step 5, cut
Step 6, annealing
Step 7, packaging warehouse-in.
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