CN110038900A - The processing method of lithium ion battery flexible package aluminum-plastic composite membrane aluminium foil layer - Google Patents
The processing method of lithium ion battery flexible package aluminum-plastic composite membrane aluminium foil layer Download PDFInfo
- Publication number
- CN110038900A CN110038900A CN201910262356.5A CN201910262356A CN110038900A CN 110038900 A CN110038900 A CN 110038900A CN 201910262356 A CN201910262356 A CN 201910262356A CN 110038900 A CN110038900 A CN 110038900A
- Authority
- CN
- China
- Prior art keywords
- casting
- temperature
- furnace
- aluminium foil
- cold rolling
- 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.)
- Granted
Links
Classifications
-
- 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
-
- 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
- B21B1/46—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 metal immediately subsequent to continuous casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0239—Lubricating
- B21B45/0242—Lubricants
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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)
Abstract
The invention discloses a kind of processing methods of lithium ion battery flexible package aluminum-plastic composite membrane aluminium foil layer, it is related to aluminum-plastic composite membrane processing technique field, the following steps are included: (1) melting, (2) it refines, (3) casting, (4) cold rolling, (5) recrystallization annealing temperature, (6) foil roll；The good corrosion resistance and good mechanical performance of the made aluminium foil of the present invention; lithium ion battery flexible package aluminum-plastic composite membrane be can satisfy to the performance requirement of aluminium foil layer, without preventing aluminium foil layer by the corrosion of electrolyte by separately setting protective layer when aluminum-plastic composite membrane is processed.
Description
Technical field:
The present invention relates to aluminum-plastic composite membrane processing technique fields, and in particular to a kind of lithium ion battery flexible package is plastic-aluminum combined
The processing method of film aluminium foil layer.
Background technique:
Lithium ion battery has many advantages, such as that energy height, long service life, light-weight, thermal adaptability is strong, environmentally protective, quilt
It is widely used in the fields such as mobile phone, laptop, electric car.Lithium ion battery aluminium foil is required than normal aluminium foil requirement
High: firstly, lithium ion battery is harsher with aluminium foil working environment, in lithium ion battery charge and discharge process, positive electrode holds
Easily fever, maximum positive electrode contact area is aluminium foil, and aluminium foil requires still to be able to maintain preferable tensile strength after thermal cycling
With other mechanical properties.Secondly, the working environment of lithium ion battery aluminium foil is inside battery, there is lithium hexafluorophosphate electrolyte solution
Corrosiveness, it requires the corrosion of aluminium foil electrolyte resistance.Furthermore lithium ion battery has outer power-up when charge and discharge
, so electrochemical corrosion is exceedingly fast.
Currently, people be dedicated to improve aluminium foil corrosion resistance, but while improving corrosion resistance aluminium foil mechanical property
It can rapid drawdown.The present invention is exactly directed to this problem, develops a kind of lithium ion battery flexible package aluminum-plastic composite membrane aluminium foil layer
Processing method, processing gained aluminium foil not only there are excellent corrosion resistance, but also good mechanical properties, be suitable as lithium from
The aluminum foil material of sub- battery flexible package aluminum-plastic composite membrane.
Summary of the invention:
Technical problem to be solved by the present invention lies in provide a kind of lithium ion battery flexible package aluminum-plastic composite membrane aluminium foil
The processing method of layer, good process repeatability, made aluminium foil not only have excellent corrosion resistance, but also good mechanical properties.
The following technical solution is employed for the technical problems to be solved by the invention to realize:
The processing method of lithium ion battery flexible package aluminum-plastic composite membrane aluminium foil layer, comprising the following steps:
(1) melting: aluminium ingot and chromium powder are proportionally added into smelting furnace, and 700-750 DEG C of smelting temperature, smelting time 3-
6h；
(2) refine: melt obtained by melting being sent into standing furnace and carries out down furnace, the when of falling furnace temperature must not exceed smelting temperature
The upper limit, stand 700-750 DEG C of furnace temperature, repeatedly refined after the completion of furnace, when refining, which adjusts nitrogen pressure, blows nitrogen
The height for playing molten aluminum is no more than 15cm, each refining time 15-30min, interval time 2-3h, takes off after the completion of refining every time floating
Slag；
(3) casting: by refining gained melt through casting and rolling machine casting, by Casting Roller by melt casting at thickness 5-7mm's
Blank, 680-730 DEG C of melt temperature, roll casting speed 900-1000mm/min；
(4) blank obtained by casting cold rolling: is cold-rolled to thickness 0.15-0.3mm through multiple tracks；
(5) blank obtained by cold rolling recrystallization annealing temperature: is subjected to recrystallization annealing temperature, 350-400 DEG C of recrystallization annealing temperature temperature, annealing time
3-5h；
(6) foil rolls: by the blank finish rolling after annealing at the aluminum foil coil of thickness 0.01-0.02mm, can be used to after cutting
The processing of aluminium foil layer.
The processing method of lithium ion battery flexible package aluminum-plastic composite membrane aluminium foil layer, comprising the following steps:
(1) melting: aluminium ingot and chromium powder are proportionally added into smelting furnace, and 700-750 DEG C of smelting temperature, smelting time 3-
6h；
(2) refine: melt obtained by melting being sent into standing furnace and carries out down furnace, the when of falling furnace temperature must not exceed smelting temperature
The upper limit, stand 700-750 DEG C of furnace temperature, repeatedly refined after the completion of furnace, when refining, which adjusts nitrogen pressure, blows nitrogen
The height for playing molten aluminum is no more than 15cm, each refining time 15-30min, interval time 2-3h, takes off after the completion of refining every time floating
Slag；
(3) casting: graphene oxide powder is added into refining gained melt, through casting and rolling machine casting after stirring evenly, leads to
Cross blank of the Casting Roller by melt casting at thickness 5-7mm, 680-730 DEG C of melt temperature, roll casting speed 900-1000mm/min,
(4) blank obtained by casting cold rolling: is cold-rolled to thickness 0.15-0.3mm through multiple tracks；
(5) blank obtained by cold rolling recrystallization annealing temperature: is subjected to recrystallization annealing temperature, 350-400 DEG C of recrystallization annealing temperature temperature, annealing time
3-5h；
(6) foil rolls: by the blank finish rolling after annealing at the aluminum foil coil of thickness 0.01-0.02mm, can be used to after cutting
The processing of aluminium foil layer.
Purity >=99.5% of aluminium ingot in the step (1).
The mass ratio of aluminium ingot and chromium powder is 100:0.5-1 in the step (1).
Melt and the mass ratio of graphene oxide powder are 100:0.5-1 in the step (3).
Multiple tracks cold rolling uses the road 6-8 cold rolling number in the step (4), and sotck thinkness is reduced 0.05- by each cold rolling
3mm。
ROLLING OIL is added when step (4) cold rolling, i.e. the operation of step (4) replaces with " by blank obtained by casting through more
Road is cold-rolled to thickness 0.15-0.3mm, and when cold rolling adds ROLLING OIL ".
The ROLLING OIL by following weight percent material composition: sulfurized lard 60%, myristic acid-polyethyleneglycol
Methyl ether 20%, lauric acid 10%, octyl phosphate 10%.
Myristic acid-the poly glycol monomethyl ether is made by myristic acid and poly glycol monomethyl ether through esterification,
It is specific the preparation method comprises the following steps: myristic acid and poly glycol monomethyl ether are dissolved in ethyl alcohol, and the concentrated sulfuric acid is added, and is again heated to back
Recycling ethyl alcohol is concentrated under reduced pressure in stream mode insulation reaction after reaction, and condensate residue adds water washing, and obtained solid is after drying
Micro mist is made in crushing.
The molar ratio of the myristic acid, poly glycol monomethyl ether and the concentrated sulfuric acid is 1.1:1:0.05.
The beneficial effects of the present invention are:
(1) addition of chromium powder enhances the corrosion resistance of made aluminium foil when the present invention passes through melting, while improving made aluminium
The mechanical property of foil；
(2) present invention further enhances the corrosion resistance of made aluminium foil by the addition of graphene oxide before casting, and
Further improve the mechanical property of made aluminium foil；
(3) present invention meets blank rolling lubrication requirement by the use of ROLLING OIL when cold rolling, shows under few additive
It writes and improves film strength, guarantee surface smoothness；
(4) good corrosion resistance and good mechanical performance of the made aluminium foil of the present invention, can satisfy lithium ion battery flexible package
Aluminum-plastic composite membrane is to the performance requirement of aluminium foil layer, without preventing aluminium by separately setting protective layer when aluminum-plastic composite membrane is processed
Corrosion of the layers of foil by electrolyte.
Specific embodiment:
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment is closed, the present invention is further explained.
Embodiment 1
(1) melting: aluminium ingot and chromium powder are proportionally added into smelting furnace, and 740 DEG C of smelting temperature, smelting time 4.5h；
(2) refine: melt obtained by melting being sent into standing furnace and carries out down furnace, the when of falling furnace temperature must not exceed smelting temperature
The upper limit, stand 740 DEG C of furnace temperature, repeatedly refined after the completion of furnace, when refining, which adjusts nitrogen pressure, makes nitrogen blow afloat aluminium
The height of liquid is no more than 15cm, each refining time 20min, interval time 2.5h, takes off removing dross after the completion of refining every time；
(3) casting: by refining gained melt through casting and rolling machine casting, by Casting Roller by melt casting at the base of thickness 7mm
Material, 710 DEG C of melt temperature, roll casting speed 950mm/min,
(4) blank obtained by casting cold rolling: is cold-rolled to thickness 0.15mm through multiple tracks；
(5) recrystallization annealing temperature: carrying out recrystallization annealing temperature for blank obtained by cold rolling, and 380 DEG C of recrystallization annealing temperature temperature, annealing time
4.5h；
(6) foil rolls: by the blank finish rolling after annealing at the aluminum foil coil of thickness 0.015mm, can be used to aluminium foil after cutting
The processing of layer.
The mass ratio of purity >=99.5% of aluminium ingot in step (1), aluminium ingot and chromium powder is 100:0.8.
Multiple tracks cold rolling uses 6 cold rollings in step (4), and first of cold rolling is rolled to 4mm by 7mm, and second cold rolling is rolled by 4mm
To 2mm, the cold rolling of third road is rolled to 0.8mm by 2mm, and the 4th cold rolling is rolled to 0.5mm by 0.8mm, and the 5th cold rolling is rolled by 0.5mm
To 0.3mm, the 6th cold rolling is rolled to 0.15mm by 0.3mm.
Embodiment 2
It is control with embodiment 1, the embodiment 2 that ROLLING OIL is added when cold rolling is set, ROLLING OIL additive amount is 1.5%,
Remaining operation is identical.
(1) melting: aluminium ingot and chromium powder are proportionally added into smelting furnace, and 740 DEG C of smelting temperature, smelting time 4.5h；
(2) refine: melt obtained by melting being sent into standing furnace and carries out down furnace, the when of falling furnace temperature must not exceed smelting temperature
The upper limit, stand 740 DEG C of furnace temperature, repeatedly refined after the completion of furnace, when refining, which adjusts nitrogen pressure, makes nitrogen blow afloat aluminium
The height of liquid is no more than 15cm, each refining time 20min, interval time 2.5h, takes off removing dross after the completion of refining every time；
(3) casting: by refining gained melt through casting and rolling machine casting, by Casting Roller by melt casting at the base of thickness 7mm
Material, 710 DEG C of melt temperature, roll casting speed 950mm/min,
(4) cold rolling: being cold-rolled to thickness 0.15mm through multiple tracks for blank obtained by casting, and when cold rolling adds ROLLING OIL, additive amount
It is 2%；
(5) recrystallization annealing temperature: carrying out recrystallization annealing temperature for blank obtained by cold rolling, and 380 DEG C of recrystallization annealing temperature temperature, annealing time
4.5h；
(6) foil rolls: by the blank finish rolling after annealing at the aluminum foil coil of thickness 0.015mm, can be used to aluminium foil after cutting
The processing of layer.
The mass ratio of purity >=99.5% of aluminium ingot in step (1), aluminium ingot and chromium powder is 100:0.8.
Multiple tracks cold rolling uses 6 cold rollings in step (4), and first of cold rolling is rolled to 4mm by 7mm, and second cold rolling is rolled by 4mm
To 2mm, the cold rolling of third road is rolled to 0.8mm by 2mm, and the 4th cold rolling is rolled to 0.5mm by 0.8mm, and the 5th cold rolling is rolled by 0.5mm
To 0.3mm, the 6th cold rolling is rolled to 0.15mm by 0.3mm.
ROLLING OIL by following weight percent material composition: sulfurized lard 60%, myristic acid-poly glycol monomethyl ether
20%, lauric acid 10%, octyl phosphate 10%.
Myristic acid-poly glycol monomethyl ether preparation: 1.1mol myristic acid and 1mol poly glycol monomethyl ether is molten
In ethyl alcohol, and the 0.05mol concentrated sulfuric acid is added, is again heated to reflux state insulation reaction, recycling is concentrated under reduced pressure after reaction
Ethyl alcohol, condensate residue add water washing, and obtained solid crushes micro mist is made after drying.
Embodiment 3
It is control with embodiment 1, the implementation that graphene oxide powder is added before casting into melt obtained by refining is set
Example 3, remaining operation are identical.
(1) melting: aluminium ingot and chromium powder are proportionally added into smelting furnace, and 740 DEG C of smelting temperature, smelting time 4.5h；
(2) refine: melt obtained by melting being sent into standing furnace and carries out down furnace, the when of falling furnace temperature must not exceed smelting temperature
The upper limit, stand 740 DEG C of furnace temperature, repeatedly refined after the completion of furnace, when refining, which adjusts nitrogen pressure, makes nitrogen blow afloat aluminium
The height of liquid is no more than 15cm, each refining time 20min, interval time 2.5h, takes off removing dross after the completion of refining every time；
(3) casting: graphene oxide powder is added into refining gained melt, through casting and rolling machine casting after stirring evenly, leads to
Cross blank of the Casting Roller by melt casting at thickness 7mm, 710 DEG C of melt temperature, roll casting speed 950mm/min,
(4) blank obtained by casting cold rolling: is cold-rolled to thickness 0.15mm through multiple tracks；
(5) recrystallization annealing temperature: carrying out recrystallization annealing temperature for blank obtained by cold rolling, and 380 DEG C of recrystallization annealing temperature temperature, annealing time
4.5h；
(6) foil rolls: by the blank finish rolling after annealing at the aluminum foil coil of thickness 0.015mm, can be used to aluminium foil after cutting
The processing of layer.
The mass ratio of purity >=99.5% of aluminium ingot in step (1), aluminium ingot and chromium powder is 100:0.8.
Melt and the mass ratio of graphene oxide powder are 100:0.5 in step (3).
Multiple tracks cold rolling uses 6 cold rollings in step (4), and first of cold rolling is rolled to 4mm by 7mm, and second cold rolling is rolled by 4mm
To 2mm, the cold rolling of third road is rolled to 0.8mm by 2mm, and the 4th cold rolling is rolled to 0.5mm by 0.8mm, and the 5th cold rolling is rolled by 0.5mm
To 0.3mm, the 6th cold rolling is rolled to 0.15mm by 0.3mm.
Embodiment 4
It is control with embodiment 3, the embodiment 4 that ROLLING OIL is added when cold rolling is set, ROLLING OIL additive amount is 1.5%,
Remaining operation is identical.
(1) melting: aluminium ingot and chromium powder are proportionally added into smelting furnace, and 740 DEG C of smelting temperature, smelting time 4.5h；
(2) refine: melt obtained by melting being sent into standing furnace and carries out down furnace, the when of falling furnace temperature must not exceed smelting temperature
The upper limit, stand 740 DEG C of furnace temperature, repeatedly refined after the completion of furnace, when refining, which adjusts nitrogen pressure, makes nitrogen blow afloat aluminium
The height of liquid is no more than 15cm, each refining time 20min, interval time 2.5h, takes off removing dross after the completion of refining every time；
(3) casting: graphene oxide powder is added into refining gained melt, through casting and rolling machine casting after stirring evenly, leads to
Cross blank of the Casting Roller by melt casting at thickness 7mm, 710 DEG C of melt temperature, roll casting speed 950mm/min,
(4) cold rolling: being cold-rolled to thickness 0.15mm through multiple tracks for blank obtained by casting, and when cold rolling adds ROLLING OIL, additive amount
It is 2%；
(5) recrystallization annealing temperature: carrying out recrystallization annealing temperature for blank obtained by cold rolling, and 380 DEG C of recrystallization annealing temperature temperature, annealing time
4.5h；
(6) foil rolls: by the blank finish rolling after annealing at the aluminum foil coil of thickness 0.015mm, can be used to aluminium foil after cutting
The processing of layer.
The mass ratio of purity >=99.5% of aluminium ingot in step (1), aluminium ingot and chromium powder is 100:0.8.
Melt and the mass ratio of graphene oxide powder are 100:0.5 in step (3).
Multiple tracks cold rolling uses 6 cold rollings in step (4), and first of cold rolling is rolled to 4mm by 7mm, and second cold rolling is rolled by 4mm
To 2mm, the cold rolling of third road is rolled to 0.8mm by 2mm, and the 4th cold rolling is rolled to 0.5mm by 0.8mm, and the 5th cold rolling is rolled by 0.5mm
To 0.3mm, the 6th cold rolling is rolled to 0.15mm by 0.3mm.
ROLLING OIL by following weight percent material composition: sulfurized lard 60%, myristic acid-poly glycol monomethyl ether
20%, lauric acid 10%, octyl phosphate 10%.
Myristic acid-poly glycol monomethyl ether preparation: 1.1mol myristic acid and 1mol poly glycol monomethyl ether is molten
In ethyl alcohol, and the 0.05mol concentrated sulfuric acid is added, is again heated to reflux state insulation reaction, recycling is concentrated under reduced pressure after reaction
Ethyl alcohol, condensate residue add water washing, and obtained solid crushes micro mist is made after drying.
Reference examples 1
It is control with embodiment 2, it is mixed with equivalent myristic acid and poly glycol monomethyl ether when ROLLING OIL preparation is set
It closes object and substitutes myristic acid-poly glycol monomethyl ether reference examples 1, remaining operation is identical.
(1) melting: aluminium ingot and chromium powder are proportionally added into smelting furnace, and 740 DEG C of smelting temperature, smelting time 4.5h；
(2) refine: melt obtained by melting being sent into standing furnace and carries out down furnace, the when of falling furnace temperature must not exceed smelting temperature
The upper limit, stand 740 DEG C of furnace temperature, repeatedly refined after the completion of furnace, when refining, which adjusts nitrogen pressure, makes nitrogen blow afloat aluminium
The height of liquid is no more than 15cm, each refining time 20min, interval time 2.5h, takes off removing dross after the completion of refining every time；
(3) casting: by refining gained melt through casting and rolling machine casting, by Casting Roller by melt casting at the base of thickness 7mm
Material, 710 DEG C of melt temperature, roll casting speed 950mm/min,
(4) cold rolling: being cold-rolled to thickness 0.15mm through multiple tracks for blank obtained by casting, and when cold rolling adds ROLLING OIL, additive amount
It is 2%；
(5) recrystallization annealing temperature: carrying out recrystallization annealing temperature for blank obtained by cold rolling, and 380 DEG C of recrystallization annealing temperature temperature, annealing time
4.5h；
(6) foil rolls: by the blank finish rolling after annealing at the aluminum foil coil of thickness 0.015mm, can be used to aluminium foil after cutting
The processing of layer.
The mass ratio of purity >=99.5% of aluminium ingot in step (1), aluminium ingot and chromium powder is 100:0.8.
Multiple tracks cold rolling uses 6 cold rollings in step (4), and first of cold rolling is rolled to 4mm by 7mm, and second cold rolling is rolled by 4mm
To 2mm, the cold rolling of third road is rolled to 0.8mm by 2mm, and the 4th cold rolling is rolled to 0.5mm by 0.8mm, and the 5th cold rolling is rolled by 0.5mm
To 0.3mm, the 6th cold rolling is rolled to 0.15mm by 0.3mm.
ROLLING OIL by following weight percent material composition: sulfurized lard 60%, myristic acid and polyethyleneglycol first
Mixture 20%, lauric acid 10%, the octyl phosphate 10% of ether.
The mixture of myristic acid and poly glycol monomethyl ether: by 1.1mol myristic acid and 1mol poly glycol monomethyl ether
Mix.
Reference examples 2
It is control with embodiment 1, does not add the reference examples 2 of chromium powder when melting is set, remaining operation is identical.
(1) melting: aluminium ingot and chromium powder are proportionally added into smelting furnace, and 740 DEG C of smelting temperature, smelting time 4.5h；
(2) refine: melt obtained by melting being sent into standing furnace and carries out down furnace, the when of falling furnace temperature must not exceed smelting temperature
The upper limit, stand 740 DEG C of furnace temperature, repeatedly refined after the completion of furnace, when refining, which adjusts nitrogen pressure, makes nitrogen blow afloat aluminium
The height of liquid is no more than 15cm, each refining time 20min, interval time 2.5h, takes off removing dross after the completion of refining every time；
(3) casting: by refining gained melt through casting and rolling machine casting, by Casting Roller by melt casting at the base of thickness 7mm
Material, 710 DEG C of melt temperature, roll casting speed 950mm/min,
(4) blank obtained by casting cold rolling: is cold-rolled to thickness 0.15mm through multiple tracks；
(5) recrystallization annealing temperature: carrying out recrystallization annealing temperature for blank obtained by cold rolling, and 380 DEG C of recrystallization annealing temperature temperature, annealing time
4.5h；
(6) foil rolls: by the blank finish rolling after annealing at the aluminum foil coil of thickness 0.015mm, can be used to aluminium foil after cutting
The processing of layer.
The mass ratio of purity >=99.5% of aluminium ingot in step (1), aluminium ingot and chromium powder is 100:0.8.
Multiple tracks cold rolling uses 6 cold rollings in step (4), and first of cold rolling is rolled to 4mm by 7mm, and second cold rolling is rolled by 4mm
To 2mm, the cold rolling of third road is rolled to 0.8mm by 2mm, and the 4th cold rolling is rolled to 0.5mm by 0.8mm, and the 5th cold rolling is rolled by 0.5mm
To 0.3mm, the 6th cold rolling is rolled to 0.15mm by 0.3mm.
Embodiment 5
It is utilized respectively embodiment 1-4, reference examples 1-2 and aluminium foil is made with batch aluminium ingot, chromium powder and graphene oxide in equivalent.
The mechanical property of made aluminium foil is measured according to GB/T16865-2013.
Measure the salt spray corrosion resistance of made aluminium foil according to GB/T6458-1986,35 DEG C, NSS neutral salt spray test.
The mechanical property and salt spray corrosion resistance of the made aluminium foil of table 1
As shown in Table 1, the addition of chromium powder and graphene oxide, which can obtain, when aluminium foil is processed improves made aluminium foil tension
The technical effect of intensity, elongation percentage and salt fog resistance.
The film strength of embodiment 2 and the made ROLLING OIL of reference examples 1 is measured respectively, as shown in table 2.
The film strength of 2 ROLLING OIL of table
| Project | Embodiment 2 | Reference examples 1 |
| Film strength/N | 358 | 301 |
As shown in Table 2, the addition of myristic acid-poly glycol monomethyl ether can when aluminium foil is processed prepared by the ROLLING OIL
Raising forms oily film strength, and then guarantees effect of rolling.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (6)
1. the processing method of lithium ion battery flexible package aluminum-plastic composite membrane aluminium foil layer, it is characterised in that: the following steps are included:
(1) melting: aluminium ingot and chromium powder are proportionally added into smelting furnace, and 700-750 DEG C of smelting temperature, smelting time 3-6h；
(2) refine: melt obtained by melting being sent into standing furnace and carries out down furnace, the when of falling furnace temperature must not exceed the upper of smelting temperature
Limit stands 700-750 DEG C of furnace temperature, is repeatedly refined after the completion of furnace, and when refining, which adjusts nitrogen pressure, makes nitrogen blow afloat aluminium
The height of liquid is no more than 15cm, each refining time 15-30min, interval time 2-3h, takes off removing dross after the completion of refining every time；
(3) casting: will refining gained melt through casting and rolling machine casting, by Casting Roller by melt casting at the blank of thickness 5-7mm,
680-730 DEG C of melt temperature, roll casting speed 900-1000mm/min；
(4) blank obtained by casting cold rolling: is cold-rolled to thickness 0.15-0.3mm through multiple tracks；
(5) blank obtained by cold rolling recrystallization annealing temperature: is subjected to recrystallization annealing temperature, 350-400 DEG C of recrystallization annealing temperature temperature, annealing time 3-
5h；
(6) foil rolls: by the blank finish rolling after annealing at the aluminum foil coil of thickness 0.01-0.02mm, can be used to aluminium foil after cutting
The processing of layer.
2. the processing method of lithium ion battery flexible package aluminum-plastic composite membrane aluminium foil layer, it is characterised in that: the following steps are included:
(1) melting: aluminium ingot and chromium powder are proportionally added into smelting furnace, and 700-750 DEG C of smelting temperature, smelting time 3-6h；
(2) refine: melt obtained by melting being sent into standing furnace and carries out down furnace, the when of falling furnace temperature must not exceed the upper of smelting temperature
Limit stands 700-750 DEG C of furnace temperature, is repeatedly refined after the completion of furnace, and when refining, which adjusts nitrogen pressure, makes nitrogen blow afloat aluminium
The height of liquid is no more than 15cm, each refining time 15-30min, interval time 2-3h, takes off removing dross after the completion of refining every time；
(3) casting: graphene oxide powder is added into refining gained melt, through casting and rolling machine casting after stirring evenly, passes through casting
Roll by melt casting at the blank of thickness 5-7mm, 680-730 DEG C of melt temperature, roll casting speed 900-1000mm/min；
(4) blank obtained by casting cold rolling: is cold-rolled to thickness 0.15-0.3mm through multiple tracks；
(5) blank obtained by cold rolling recrystallization annealing temperature: is subjected to recrystallization annealing temperature, 350-400 DEG C of recrystallization annealing temperature temperature, annealing time 3-
5h；
(6) foil rolls: by the blank finish rolling after annealing at the aluminum foil coil of thickness 0.01-0.02mm, can be used to aluminium foil after cutting
The processing of layer.
3. the processing method of lithium ion battery flexible package aluminum-plastic composite membrane aluminium foil layer according to claim 1 or 2, special
Sign is: purity >=99.5% of aluminium ingot in the step (1).
4. the processing method of lithium ion battery flexible package aluminum-plastic composite membrane aluminium foil layer according to claim 1 or 2, special
Sign is: the mass ratio of aluminium ingot and chromium powder is 100:0.5-1 in the step (1).
5. the processing method of lithium ion battery flexible package aluminum-plastic composite membrane aluminium foil layer according to claim 2, feature
Be: melt and the mass ratio of graphene oxide powder are 100:0.5-1 in the step (3).
6. the processing method of lithium ion battery flexible package aluminum-plastic composite membrane aluminium foil layer according to claim 1 or 2, special
Sign is: multiple tracks cold rolling uses the road 6-8 cold rolling number in the step (4), and sotck thinkness is reduced 0.05-3mm by each cold rolling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910262356.5A CN110038900B (en) | 2019-04-02 | 2019-04-02 | Processing method of aluminum foil layer for lithium ion battery flexible package aluminum-plastic composite film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910262356.5A CN110038900B (en) | 2019-04-02 | 2019-04-02 | Processing method of aluminum foil layer for lithium ion battery flexible package aluminum-plastic composite film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110038900A true CN110038900A (en) | 2019-07-23 |
| CN110038900B CN110038900B (en) | 2020-11-27 |
Family
ID=67275933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910262356.5A Active CN110038900B (en) | 2019-04-02 | 2019-04-02 | Processing method of aluminum foil layer for lithium ion battery flexible package aluminum-plastic composite film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110038900B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270109A (en) * | 2020-03-31 | 2020-06-12 | 江苏鼎胜新能源材料股份有限公司 | Method for producing 8021 aluminum alloy soft packaging foil for lithium battery by cast rolling method |
| CN112126821A (en) * | 2020-08-28 | 2020-12-25 | 广东安德力新材料有限公司 | Processing method for aluminum plastic film aluminum foil of power battery |
| CN113369304A (en) * | 2021-05-28 | 2021-09-10 | 内蒙古联晟新能源材料有限公司 | Control method for reducing aluminum powder on surface of battery foil |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55100537A (en) * | 1979-01-25 | 1980-07-31 | Nippon Seihaku Kk | Aluminum foil for light reflecting screen |
| CN86101976A (en) * | 1985-02-27 | 1986-08-27 | 日清制油株式会社 | Cold rolling mill lubricant |
| CN1500854A (en) * | 2002-11-08 | 2004-06-02 | 花王株式会社 | Cold-rolled lubricating oil for steel plate |
| CN101016498A (en) * | 2007-03-05 | 2007-08-15 | 中国石油化工集团公司 | Composition of cold rolling sheet rolling oil |
| CN102234750A (en) * | 2011-06-16 | 2011-11-09 | 东南铝业（中国）有限公司 | Production method of aluminum foil for lithium battery |
| CN104395364A (en) * | 2012-08-03 | 2015-03-04 | 日油株式会社 | Surface property improving agent composition for molded bodies formed of polyolefin resins, resin composition containing same, and resin molded body of said resin composition |
| CN104450094A (en) * | 2014-12-09 | 2015-03-25 | 芜湖市鸿坤汽车零部件有限公司 | Hard film anti-rusting oil for railway wheel hub |
| CN105063429A (en) * | 2015-07-15 | 2015-11-18 | 浙江中金铝业有限公司 | Method for preparing aluminum foil for lithium battery |
| CN107099701A (en) * | 2017-04-26 | 2017-08-29 | 洛阳龙鼎铝业有限公司 | A kind of preparation method of lithium ion battery high intensity aluminium foil |
| CN107723497A (en) * | 2017-10-04 | 2018-02-23 | 长沙仲善新能源科技有限公司 | Aluminum alloy strip for mobile phone battery shell and its manufacture method |
| CN108672249A (en) * | 2018-04-04 | 2018-10-19 | 北京石墨烯技术研究院有限公司 | A kind of anisotropic graphite alkene composite material and preparation method thereof |
| US20190077967A1 (en) * | 2017-03-02 | 2019-03-14 | LiquiGlide Inc. | Systems and methods for creating durable lubricious surfaces via interfacial modification |
-
2019
- 2019-04-02 CN CN201910262356.5A patent/CN110038900B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55100537A (en) * | 1979-01-25 | 1980-07-31 | Nippon Seihaku Kk | Aluminum foil for light reflecting screen |
| CN86101976A (en) * | 1985-02-27 | 1986-08-27 | 日清制油株式会社 | Cold rolling mill lubricant |
| CN1500854A (en) * | 2002-11-08 | 2004-06-02 | 花王株式会社 | Cold-rolled lubricating oil for steel plate |
| CN101016498A (en) * | 2007-03-05 | 2007-08-15 | 中国石油化工集团公司 | Composition of cold rolling sheet rolling oil |
| CN102234750A (en) * | 2011-06-16 | 2011-11-09 | 东南铝业（中国）有限公司 | Production method of aluminum foil for lithium battery |
| CN104395364A (en) * | 2012-08-03 | 2015-03-04 | 日油株式会社 | Surface property improving agent composition for molded bodies formed of polyolefin resins, resin composition containing same, and resin molded body of said resin composition |
| CN104450094A (en) * | 2014-12-09 | 2015-03-25 | 芜湖市鸿坤汽车零部件有限公司 | Hard film anti-rusting oil for railway wheel hub |
| CN105063429A (en) * | 2015-07-15 | 2015-11-18 | 浙江中金铝业有限公司 | Method for preparing aluminum foil for lithium battery |
| US20190077967A1 (en) * | 2017-03-02 | 2019-03-14 | LiquiGlide Inc. | Systems and methods for creating durable lubricious surfaces via interfacial modification |
| CN107099701A (en) * | 2017-04-26 | 2017-08-29 | 洛阳龙鼎铝业有限公司 | A kind of preparation method of lithium ion battery high intensity aluminium foil |
| CN107723497A (en) * | 2017-10-04 | 2018-02-23 | 长沙仲善新能源科技有限公司 | Aluminum alloy strip for mobile phone battery shell and its manufacture method |
| CN108672249A (en) * | 2018-04-04 | 2018-10-19 | 北京石墨烯技术研究院有限公司 | A kind of anisotropic graphite alkene composite material and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270109A (en) * | 2020-03-31 | 2020-06-12 | 江苏鼎胜新能源材料股份有限公司 | Method for producing 8021 aluminum alloy soft packaging foil for lithium battery by cast rolling method |
| CN112126821A (en) * | 2020-08-28 | 2020-12-25 | 广东安德力新材料有限公司 | Processing method for aluminum plastic film aluminum foil of power battery |
| CN113369304A (en) * | 2021-05-28 | 2021-09-10 | 内蒙古联晟新能源材料有限公司 | Control method for reducing aluminum powder on surface of battery foil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110038900B (en) | 2020-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110038900A (en) | The processing method of lithium ion battery flexible package aluminum-plastic composite membrane aluminium foil layer | |
| CN102029366B (en) | Continuous casting crystallizer covering slag special for extra-thick slab peritectic steel and preparation method thereof | |
| CN102234750B (en) | Production method of aluminum foil for lithium battery | |
| CN107099701A (en) | A kind of preparation method of lithium ion battery high intensity aluminium foil | |
| WO2020140442A1 (en) | S355g10 super-thick steel plate for ocean engineering and manufacturing method | |
| CN107012370A (en) | High-performance 1230A alloy lithium ion battery aluminium foils and preparation method thereof | |
| CN103103405A (en) | Multi-element micro-alloyed high-strength aluminum-manganese alloy and preparation method thereof | |
| CN102744571B (en) | Large copper end-ring manufacturing process | |
| CN104212977B (en) | A kind of containing Ti non-corrosive metal stripping electroslag remelting plate blank Ti element control method | |
| CN106834920B (en) | A kind of hot rolling enamelled pressed steel and preparation method thereof | |
| CN102796922A (en) | Alloy cathode foil which is special for capacitor and produced by continuous roll casting method and preparation method | |
| CN103589951A (en) | Large section H shaped steel and its production method | |
| CN111270109B (en) | Method for producing 8021 aluminum alloy soft packaging foil for lithium battery by cast rolling method | |
| CN105018847B (en) | Extremely-thin oriented silicon steel plate based on two-roll thin-strip continuous casting and manufacturing method of extremely-thin oriented silicon steel plate | |
| CN106435273B (en) | A kind of high-plasticity corrosion-resistance Zn-Cu-Ti alloys and preparation method thereof | |
| CN108856666B (en) | Continuous casting covering slag for stainless steel and preparation method thereof | |
| CN102994768A (en) | Electro-slag re-melting slag and preparation method thereof | |
| CN109881085A (en) | Easy welding hot-rolled strip Q345 and its manufacturing method based on double-roller rolling | |
| CN104928533B (en) | Zinc-copper-titanium intermediate alloy for non-vacuum casting, and preparation method of zinc-copper-titanium intermediate alloy | |
| CN102978484A (en) | Al-Fe alloy plate for shell of power battery and preparation method thereof | |
| CN104611616A (en) | Aluminium foil produced by utilization of cast-rolled slabs and used for dynamic functional materials and preparing method thereof | |
| CN107785532B (en) | Aluminum foil for improving safety performance of battery and preparation method and application thereof | |
| CN113881874A (en) | Foil blank for new energy battery and preparation method thereof | |
| CN111349812B (en) | Energy-saving environment-friendly lead-based alloy | |
| CN107502788A (en) | Electrolytic capacitor shell aluminium alloy and preparation method thereof |
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 |