CN105063520B - A kind of annealing of aluminum foil for lithium battery - Google Patents
A kind of annealing of aluminum foil for lithium battery Download PDFInfo
- Publication number
- CN105063520B CN105063520B CN201510417167.2A CN201510417167A CN105063520B CN 105063520 B CN105063520 B CN 105063520B CN 201510417167 A CN201510417167 A CN 201510417167A CN 105063520 B CN105063520 B CN 105063520B
- Authority
- CN
- China
- Prior art keywords
- annealing
- aluminum foil
- lithium battery
- temperature
- 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.)
- Active
Links
Abstract
The present invention relates to a kind of annealing of aluminum foil for lithium battery, belong to aluminum alloy materials processing technique field.The annealing of the aluminum foil for lithium battery is：The annealing includes the following steps：Aluminum foil for lithium battery blank is first cold-rolled to 4.0 5.0mm, then carries out first time annealing；Blank coarse rolling after first time is made annealing treatment then carries out double annealing processing to 0.25 0.3mm；Wherein, in-furnace temperature of annealing when making annealing treatment for the first time is 585 590 DEG C, heats 15 20h, when Preform surface temperature reaches 460 475 DEG C, annealing in-furnace temperature is down to 460 480 DEG C, keeps the temperature 3 6h；In-furnace temperature of annealing when double annealing is handled is 190 220 DEG C, heats 8 10h, when Preform surface temperature reaches 165 170 DEG C, the temperature in annealing furnace is down to 195 205 DEG C, keeps the temperature 6 8h.The present invention handled by reasonable arrangement double annealing, improve alloy casting prick during component segregation, improve original Microstructure of roll casting with obtain component uniformly, even tissue, performance stablize product, and then improve aluminum foil for lithium battery performance.
Description
Technical field
The present invention relates to a kind of annealing of aluminum foil for lithium battery, belong to the processing technique field of aluminum alloy materials.
Background technology
As the improvement of people's living standards, the lifting of environmental consciousness, the energy means of transport social demand of clean environmental protection
Huge, for electric vehicle into middle main means of transport for people's lives, the power battery as electrical vehicular power source is lithium battery.
The positive electrode electronic collector of lithium battery is aluminium foil.This aluminium foil desired size precision is high.Aluminium foil surface uniform color, Gan Jing ﹑ without
Corrode Hen ﹑ Wu the defects of Se Cha ﹑ are without Hua Shang ﹑ unstriateds are wiped, template is smooth, and the alloy for being generally used for manufacture aluminium foil is 1235, aluminium
Paper tinsel performance is general so that lithium battery performance is general.And in the prior art, the production procedure for producing aluminium foil is：Melting-semicontinuous casting
- sawing (end to end)-milling face-homogenizing annealing-hot rolling-cold rolling-paper tinsel rolls-is made to shear.Although this preparation method can be certain
Compound crushing effect and dislocation distribution are improved in degree degree, crystal grain thinning is thin, and then improves organization mechanics performance, but still
It can not meet the lithium battery aluminium foil performance requirement being increasingly continuously improved, still need to material and the preparation side of research aluminum foil for lithium battery
Method.
The content of the invention
The defects of present invention is for present in the prior art, there is provided a kind of production cost is low, increases substantially lithium battery use
The annealing of aluminium foil performance, obtained aluminium foil performance are high.
The above-mentioned purpose of the present invention can be realized by following technical proposal：A kind of annealing of aluminum foil for lithium battery,
The annealing includes the following steps：
Aluminum foil for lithium battery blank is first cold-rolled to 4.0-5.0mm, then carries out first time annealing；First time is annealed
Blank coarse rolling after processing then carries out double annealing processing to 0.25-0.3mm；
Wherein, in-furnace temperature of annealing when making annealing treatment for the first time is 585-590 DEG C, 15-20h is heated, when blank surface temperature
When degree reaches 460-475 DEG C, annealing in-furnace temperature is down to 460-480 DEG C, keeps the temperature 3-6h；
In-furnace temperature of annealing when double annealing is handled is 190-220 DEG C, 8-10h is heated, when Preform surface temperature reaches
165-170 DEG C, the temperature in annealing furnace is down to 195-205 DEG C, keeps the temperature 6-8h.
The present invention improves original casting by the component segregation during increasing homogenizing annealing processing improvement alloy casting bundle
Tissue with obtain component uniformly, even tissue, performance stablize product, and then improve aluminum foil for lithium battery performance.
In the annealing of above-mentioned aluminum foil for lithium battery, aluminum foil for lithium battery blank is before cold rolling by aluminum foil for lithium battery
Heating is smelted into aluminium alloy melt；Then carry out successively refining skim, crystal grain refinement, degasification slagging-off, filtration treatment；Again will filtering
Aluminum foil for lithium battery blank of the aluminium alloy melt continuous casting and rolling afterwards into 6.0-8.0mm.
Wherein, the refining is skimmed specially：After aluminium alloy melt is stood 12-18min, then carry out at multiple refining
Reason, time of first time refining treatment be 18-22min, after first time refining treatment (i.e. since second of refining treatment) essence
The refining time is 20-25min, at intervals of 2h-3h.
The crystal grain refinement need to add Al-5Ti-B grain refiners when handling, addition is closed for 1.5-2kg/ tons of aluminium
Gold.
The degasification slagging-off is to be passed through high pure nitrogen into degasification tank to carry out aluminium alloy melt degasification, and adjustment graphite turns
Rotor speed, ensures hydrogen content≤0.12ml/100gAl of molten aluminum, hydrogen content≤0.12ml/100gAl, wherein, nitrogen gas purity will
To ask more than 99.995%, nitrogen pressure 0.4-0.5Mpa, the temperature of degasification tank melt is 720-730 DEG C, and when 1 is small
The scum silica frost for floating up to bath surface in degasification tank with nitrogen bubble is taken off.
The filtering is removed the gred with the bipolar filter plate of binary channels, and filtering accuracy is 50 mesh and 60 mesh.
The continuous casting and rolling supplies stream specifically by case bast mouth before casting and rolling machine, by casting and rolling machine Casting Roller, in roll casting zone
It is interior by the casting of liquid aluminium alloy melt into blank.Wherein, 690-700 DEG C of case melt temperature before when continuous casting and rolling is handled, roll gap
4.6-4.8mm, roll 55-60mm, bast mouth opening degree 11-12mm, preload force 180-260T, coiling tension：40-
60kn.Roll casting speed 950-980mm/min, 32-38 DEG C of cooler-water temperature.
It can be reached by the quality of cast-rolling stock after the continuous casting and rolling processing of the present invention：With plate difference≤0.05mm, convexity
0.01-0.05mm, 1 grade of grain size, longitudinal tolerance≤0.1mm.Technique raw edges≤2mm, Casting Rolled Sheet coarse micro-grain sample surface are not present
Influence striped and the segregation used.Roller system must be wiped clearly before the rolling, and with oil flushing is rolled, ROLLING OIL is up-to-standard, roll
Grinding quality is qualified, while ensures that cold burden rolls.Mill speed, tension force are correctly selected by AGC, AFC templates automatically control skill
Art control template is so as to obtain excellent template.
Casting and rolling machine gloss level of roll is Ra0.5 μm during blank cold rolling.
In the annealing of above-mentioned aluminum foil for lithium battery, aluminum foil for lithium battery blank is handled double annealing after cold rolling
Aluminum foil coil cutting can be obtained finished product aluminum foil for lithium battery by aluminium foil finish rolling afterwards into the aluminum foil coil that thickness is 0.01-0.05mm.
Tension force/speed rolling mode, ACG control models, forward pull 35-50N/mm are selected during the aluminum foil coil finish rolling2,
Backward pull is 35-40N/mm2, mill speed 500-700m/min, roll-force 250-350T, oil temperature is 50-55 DEG C, oil pressure
For 3.0-4.0bar, flow 50-65%, roll crown 0.06mm, Ra0.12-0.2 μm of gloss level of roll, ROLLING OIL addition
Agent is 6-8%.
It by the big volume cutting of double sheet (or individual) aluminium foil is individual aluminum foil coil for being required with production that the cutting, which is,.
In the annealing of above-mentioned aluminum foil for lithium battery, the component and its quality percentage of the aluminum foil for lithium battery blank
Than for：Fe：0.38-0.45%；Si：0.1-0.15%；Cu：0.03-0.06%；Ti：0.015-0.02%；Mn：≤ 0.03%；
Mg：≤ 0.03%；Zn：≤ 0.03%；Surplus is Al and inevitable impurity.
Preferably, the component and its mass percent of the aluminum foil for lithium battery are：Fe：0.38-0.42%；Si：
0.12-0.15%；Cu：0.04-0.06%；Ti：0.018-0.02%；Mn：≤ 0.03%；Mg：≤ 0.03%；Zn：≤
0.03%；Surplus is Al and inevitable impurity.
Further preferably, the component of the aluminum foil for lithium battery and its mass percent are：Fe：0.39%；Si：
0.12%；Cu：0.04%；Ti：0.016%；Mn：≤ 0.03%；Mg：≤ 0.03%；Zn：≤ 0.03%；Surplus is for Al and not
Evitable impurity, wherein, Mn+Mg+Zn≤0.03%.
Further preferably, the component of the aluminum foil for lithium battery and its mass percent are：Fe：0.40%；Si：
0.13%；Cu：0.05%；Ti：0.018%；Mn：≤ 0.03%；Mg：≤ 0.03%；Zn：≤ 0.03%；Surplus is for Al and not
Evitable impurity.
Further preferably, the component of the aluminum foil for lithium battery and its mass percent are：Fe：0.38%；Si：
0.15%；Cu：0.04%；Ti：0.02%；Mn：≤ 0.03%；Mg：≤ 0.03%；Zn：≤ 0.03%；Surplus is Al and can not
The impurity avoided.
Further preferably, the component of the aluminum foil for lithium battery and its mass percent are：Fe：0.42%；Si：
0.12%；Cu：0.06%；Ti：0.019%；Mn：≤ 0.03%；Mg：≤ 0.03%；Zn：≤ 0.03%；Surplus is for Al and not
Evitable impurity.
Compared with prior art, the invention has the advantages that：
1st, compared with hot rolling technology of the prior art, the present invention is handled by double annealing during improvement alloy casting bundle
Component segregation, improve original Microstructure of roll casting with obtain component uniformly, even tissue, performance stablize product, be conducive at the same time
The processing hardening in cold-rolled process is eliminated, and then improves the performance of aluminum foil for lithium battery.
2nd, the continuous casting and rolling technological process that the present invention uses is few, and equipment investment is small, and floor space is small, and energy conservation and environmental protection is good, raw
It is low to produce cost, and aluminum foil for lithium battery clean surface is without Residual oil.
3rd, the present invention adds Cu elements, by varying the synergistic effect between element, carries by adjusting the component of aluminium alloy
The performance of high aluminium foil, makes its satisfaction prepare the requirement of lithium battery aluminium foil.
4th, aluminum foil for lithium battery mechanical property produced by the present invention is preferable：a：Thickness poor ± 3%；b：Tensile strength 160-
190MPa；c：Elongation percentage >=1.5%；d：Pinhole number：0/m2；e：Moistened surface tension force：>=32 dynes；f：Aluminium foil uncoiling performance
Good, adhesiveness is excellent.
Embodiment
It is the specific embodiment of the present invention below, technical scheme is further described, but the present invention is simultaneously
It is not limited to these embodiments.
Embodiment 1
Dispensing：Adjust the component and its mass percent of aluminum foil for lithium battery：Fe：0.39%；Si：0.12%；Cu：
0.04%；Ti：0.016%；Surplus is Al and inevitable impurity, wherein, Mn+Mg+Zn≤0.03%.
Melting, casting-rolling technology：The heating of above-mentioned aluminum foil for lithium battery is smelted into aluminium alloy melt；Then refined successively
Skim, crystal grain refinement, degasification slagging-off, filtration treatment, then the blank by the aluminium alloy melt continuous casting and rolling after filtering into 7.0mm.
Wherein, refining skim, crystal grain refinement, degasification slagging-off, filtration treatment, continuous casting and rolling it is specific as follows：
A, refining is skimmed：Aluminium alloy melt is gone to 15min is stood in standing furnace, the temperature of standing furnace is 745 DEG C, then
Multiple refining treatment is carried out, the time of first time nitrogen refining treatment is 20min, takes surface scum after having refined off, for the first time
Refining time is 22min (i.e. since second of refining treatment) after refining treatment, at intervals of 2.5h；
B, crystal grain refinement：Aluminium Ti, B grain graining agent is fed into machine by titanium silk and is added to degasification tank molten aluminum inlet, it is brilliant
The addition of grain fining agent is 2.5kg/ tons of aluminium alloy melts, and modifying-refining is carried out to melt；
C, degasification removes the gred：High pure nitrogen is passed through into degasification tank degasification is carried out to aluminium alloy melt, adjustment graphite rotator turns
Speed, ensures hydrogen content≤0.12ml/100gAl of molten aluminum；Hydrogen content≤0.12ml/100gAl in order to control, nitrogen gas purity requirement reach
To more than 99.995%, for nitrogen pressure in 0.45Mpa, the temperature of degasification tank melt is 725 DEG C, and by degasification tank when 1 is small
In the scum silica frost of bath surface floated up to nitrogen bubble take off；
D, filtration treatment：Removed the gred with the bipolar filter plate of binary channels, filtering accuracy is 50 mesh；
E, continuous casting and rolling：By case bast mouth before casting and rolling machine for stream, by casting and rolling machine Casting Roller, by liquid aluminium in roll casting zone
Blank of the alloy melt casting into thickness for 7.0mm；Wherein, preceding 695 DEG C of case melt temperature, host speed 1100m/min, roll gap
4.7mm, roll 58mm, bast mouth opening degree 11mm, preload force 220T, coiling tension：50kn, roll casting speed 960mm/
Min, 35 DEG C of cooler-water temperature.
Cold-rolling process：Blank is first cold-rolled to 4.8mm, then carries out first time annealing：Moved back when making annealing treatment for the first time
Fiery in-furnace temperature is 585 DEG C, heats 18h, and when Preform surface temperature reaches 465 DEG C, annealing in-furnace temperature is down to 470 DEG C,
Keep the temperature 4h；Blank coarse rolling after first time is made annealing treatment then carries out double annealing processing to 0.28mm：Double annealing is handled
When in-furnace temperature of annealing be 200 DEG C, heat 9h, when Preform surface temperature reaches 168 DEG C, the temperature in annealing furnace be down to 200
DEG C, keep the temperature 6-8h；The aluminum foil coil that thickness is 0.032mm is rolled into blank after double annealing is handled.
The processing of paper tinsel pressure：The pairing aluminium foil for being 0.064mm into double sheet thickness by the aluminum foil coil pairing that single thickness is 0.032mm
Volume, additive level is 0.69% in pairing oil, then by pairing aluminum foil coil finish rolling that two gross thickness are 0.064mm into thickness
For the pairing aluminum foil coil of 0.03mm, aluminum foil coil finally is cut into single thickness can obtain finished product lithium battery aluminium for 0.015mm
Paper tinsel；Wherein, tension force/speed rolling mode, ACG control models, forward pull 45N/mm are selected during finish rolling2, backward pull 38N/mm2, roll
Speed 600m/min processed, roll-force 300T, 52 DEG C, oil pressure 3.5bar of oil temperature, flow 60%, roll crown 0.06mm, roll are thick
Ra0.16 μm of rugosity, rolling oil additives 7%；Forward pull 45N/mm after cutting2, backward pull 35N/mm2, speed 400m/min.
Obtained aluminum foil for lithium battery in the present embodiment is tested for the property, as a result actual (real) thickness is 0.0148mm, is resisted
Tensile strength is 175N/mm2, elongation percentage 2%, 0/m of pinhole number2, opening a book property naturally droops ＜ 1.0m, dyne value 33.
Embodiment 2
Dispensing：Adjust the component and its mass percent of aluminum foil for lithium battery：Fe：0.40%；Si：0.13%；Cu：
0.05%；Ti：0.018%；Mn：≤ 0.03%；Mg：≤ 0.03%；Zn：≤ 0.03%；Surplus for Al and inevitably it is miscellaneous
Matter.
Melting, casting-rolling technology：The heating of above-mentioned aluminum foil for lithium battery is smelted into aluminium alloy melt；Then refined successively
Skim, crystal grain refinement, degasification slagging-off, filtration treatment, then the blank by the aluminium alloy melt continuous casting and rolling after filtering into 7.0mm.
Wherein, refining skim, crystal grain refinement, degasification slagging-off, filtration treatment, continuous casting and rolling it is specific as follows：
A, refining is skimmed：Aluminium alloy melt is gone to 12min is stood in standing furnace, the temperature of standing furnace is 750 DEG C, then
Multiple refining treatment is carried out, the time of first time nitrogen refining treatment is 18min, takes surface scum after having refined off, for the first time
Refining time is 25min (i.e. since second of refining treatment) after refining treatment, at intervals of 2h；
B, crystal grain refinement：Aluminium Ti, B grain graining agent is fed into machine by titanium silk and is added to degasification tank molten aluminum inlet, it is brilliant
The addition of grain fining agent is 3kg/ tons of aluminium alloy melts, and modifying-refining is carried out to melt；
C, degasification removes the gred：High pure nitrogen is passed through into degasification tank degasification is carried out to aluminium alloy melt, adjustment graphite rotator turns
Speed, ensures hydrogen content≤0.12ml/100gAl of molten aluminum；Hydrogen content≤0.12ml/100gAl in order to control, nitrogen gas purity requirement reach
To more than 99.995%, for nitrogen pressure in 0.4Mpa, the temperature of degasification tank melt is 730 DEG C, and by degasification tank when 1 is small
The scum silica frost that bath surface is floated up to nitrogen bubble is taken off；
D, filtration treatment：Removed the gred with the bipolar filter plate of binary channels, filtering accuracy is 60 mesh；
E, continuous casting and rolling：By case bast mouth before casting and rolling machine for stream, by casting and rolling machine Casting Roller, by liquid aluminium in roll casting zone
Blank of the alloy melt casting into thickness for 7.0mm；Wherein, preceding 690 DEG C of case melt temperature, host speed 1200m/min, roll gap
4.6mm, roll 60mm, bast mouth opening degree 11mm, preload force 260T, coiling tension：40kn, roll casting speed 980mm/
Min, 32 DEG C of cooler-water temperature.
Cold-rolling process：Blank is first cold-rolled to 4.8mm, then carries out first time annealing：Moved back when making annealing treatment for the first time
Fiery in-furnace temperature is 590 DEG C, heats 15h, and when Preform surface temperature reaches 475 DEG C, annealing in-furnace temperature is down to 460 DEG C,
Keep the temperature 6h；Blank coarse rolling after first time is made annealing treatment then carries out double annealing processing to 0.25mm：Double annealing is handled
When in-furnace temperature of annealing be 220 DEG C, heat 8h, when Preform surface temperature reaches 170 DEG C, the temperature in annealing furnace be down to 195
DEG C, keep the temperature 8h；The aluminum foil coil that thickness is 0.03mm is rolled into blank after double annealing is handled.
The processing of paper tinsel pressure：The pairing aluminium foil for being 0.06mm into double sheet thickness by the aluminum foil coil pairing that single thickness is 0.03mm
Volume, additive level is 0.69% in pairing oil, then by pairing aluminum foil coil finish rolling that two gross thickness are 0.06mm into thickness
For the pairing aluminum foil coil of 0.03mm, aluminum foil coil finally is cut into single thickness can obtain finished product lithium battery aluminium for 0.015mm
Paper tinsel；Wherein, tension force/speed rolling mode, ACG control models, forward pull 35N/mm are selected during finish rolling2, backward pull 40N/mm2, roll
Speed 500m/min processed, roll-force 350T, 50 DEG C, oil pressure 4.0bar of oil temperature, flow 50%, roll crown 0.06mm, roll are thick
Ra0.2 μm of rugosity, rolling oil additives 6-8%；Forward pull 35N/mm after cutting2, backward pull 40N/mm2, speed 300m/min.
Obtained aluminum foil for lithium battery in the present embodiment is tested for the property, as a result actual (real) thickness is 0.0151mm, is resisted
Tensile strength is 176N/mm2, elongation percentage 2%, 0/m of pinhole number2, opening a book property naturally droops ＜ 1.0m, dyne value 34.
Embodiment 3
Dispensing：Adjust the component and its mass percent of aluminum foil for lithium battery：Fe：0.38%；Si：0.15%；Cu：
0.04%；Ti：0.02%；Mn：≤ 0.03%；Mg：≤ 0.03%；Zn：≤ 0.03%；Surplus for Al and inevitably it is miscellaneous
Matter.
Melting, casting-rolling technology：The heating of above-mentioned aluminum foil for lithium battery is smelted into aluminium alloy melt；Then refined successively
Skim, crystal grain refinement, degasification slagging-off, filtration treatment, then the blank by the aluminium alloy melt continuous casting and rolling after filtering into 7.0mm.
Wherein, refining skim, crystal grain refinement, degasification slagging-off, filtration treatment, continuous casting and rolling it is specific as follows：
A, refining is skimmed：Aluminium alloy melt is gone to 18min is stood in standing furnace, the temperature of standing furnace is 740 DEG C, then
Multiple refining treatment is carried out, the time of first time nitrogen refining treatment is 22min, takes surface scum after having refined off, for the first time
Refining time is 20min (i.e. since second of refining treatment) after refining treatment, at intervals of 3h；
B, crystal grain refinement：Aluminium Ti, B grain graining agent is fed into machine by titanium silk and is added to degasification tank molten aluminum inlet, it is brilliant
The addition of grain fining agent is 2kg/ tons of aluminium alloy melts, and modifying-refining is carried out to melt；
C, degasification removes the gred：High pure nitrogen is passed through into degasification tank degasification is carried out to aluminium alloy melt, adjustment graphite rotator turns
Speed, ensures hydrogen content≤0.12ml/100gAl of molten aluminum；Hydrogen content≤0.12ml/100gAl in order to control, nitrogen gas purity requirement reach
To more than 99.995%, for nitrogen pressure in 0.5Mpa, the temperature of degasification tank melt is 720 DEG C, and by degasification tank when 1 is small
The scum silica frost that bath surface is floated up to nitrogen bubble is taken off；
D, filtration treatment：Removed the gred with the bipolar filter plate of binary channels, filtering accuracy is 60 mesh；
E, continuous casting and rolling：By case bast mouth before casting and rolling machine for stream, by casting and rolling machine Casting Roller, by liquid aluminium in roll casting zone
Blank of the alloy melt casting into thickness for 7.0mm；Wherein, preceding 700 DEG C of case melt temperature, host speed 1000m/min, roll gap
4.8mm, roll 55mm, bast mouth opening degree 12mm, preload force 180T, coiling tension：60kn, roll casting speed 950mm/
Min, 38 DEG C of cooler-water temperature.
Cold-rolling process：Blank is first cold-rolled to 4.8mm, then carries out first time annealing：Moved back when making annealing treatment for the first time
Fiery in-furnace temperature is 585 DEG C, heats 20h, and when Preform surface temperature reaches 460 DEG C, annealing in-furnace temperature is down to 480 DEG C,
Keep the temperature 3h；Blank coarse rolling after first time is made annealing treatment then carries out double annealing processing to 0.3mm：Double annealing is handled
When in-furnace temperature of annealing be 190 DEG C, heat 10h, when Preform surface temperature reaches 165 DEG C, the temperature in annealing furnace be down to 205
DEG C, keep the temperature 6h；The aluminum foil coil that thickness is 0.035mm is rolled into blank after double annealing is handled.
The processing of paper tinsel pressure：The pairing aluminium foil for being 0.064mm into double sheet thickness by the aluminum foil coil pairing that single thickness is 0.032mm
Volume, additive level is 0.69% in pairing oil, then by pairing aluminum foil coil finish rolling that two gross thickness are 0.064mm into thickness
For the pairing aluminum foil coil of 0.031mm, aluminum foil coil finally is cut into single thickness can obtain finished product lithium battery use for 0.0155mm
Aluminium foil；Wherein, tension force/speed rolling mode, ACG control models, forward pull 50N/mm are selected during finish rolling2, backward pull 35N/mm2,
Mill speed 700m/min, roll-force 250T, 55 DEG C, oil pressure 3.0bar of oil temperature, flow 65%, roll crown 0.06mm, roll
0.12 μm of roughness Ra, rolling oil additives 8%；Forward pull 35N/mm after cutting2, backward pull 40N/mm2, speed 300m/min.
Obtained aluminum foil for lithium battery in the present embodiment is tested for the property, as a result actual (real) thickness is 0.0152mm, is resisted
Tensile strength is 173N/mm2, elongation percentage 2.2%, 0/m of pinhole number2, opening a book property naturally droops ＜ 1.0m, dyne value 34.
Embodiment 4
Dispensing：Adjust the component and its mass percent of aluminum foil for lithium battery：Fe：0.4%；Si：0.13%；Cu：
0.05%；Ti：0.017%；Surplus is Al and inevitable impurity, wherein, Mn+Mg+Zn≤0.03%.
Melting, casting-rolling technology：The heating of above-mentioned aluminum foil for lithium battery is smelted into aluminium alloy melt；Then refined successively
Skim, crystal grain refinement, degasification slagging-off, filtration treatment, then the blank by the aluminium alloy melt continuous casting and rolling after filtering into 7.0mm.
Wherein, refining skim, crystal grain refinement, degasification slagging-off, filtration treatment, continuous casting and rolling it is specific as follows：
A, refining is skimmed：Aluminium alloy melt is gone to 15min is stood in standing furnace, the temperature of standing furnace is 746 DEG C, then
Multiple refining treatment is carried out, the time of first time nitrogen refining treatment is 20min, takes surface scum after having refined off, for the first time
Refining time is 23min (i.e. since second of refining treatment) after refining treatment, at intervals of 2.5h；
B, crystal grain refinement：Aluminium Ti, B grain graining agent is fed into machine by titanium silk and is added to degasification tank molten aluminum inlet, it is brilliant
The addition of grain fining agent is 2.6kg/ tons of aluminium alloy melts, and modifying-refining is carried out to melt；
C, degasification removes the gred：High pure nitrogen is passed through into degasification tank degasification is carried out to aluminium alloy melt, adjustment graphite rotator turns
Speed, ensures hydrogen content≤0.12ml/100gAl of molten aluminum；Hydrogen content≤0.12ml/100gAl in order to control, nitrogen gas purity requirement reach
To more than 99.995%, for nitrogen pressure in 0.43Mpa, the temperature of degasification tank melt is 722 DEG C, and by degasification tank when 1 is small
In the scum silica frost of bath surface floated up to nitrogen bubble take off；
D, filtration treatment：Removed the gred with the bipolar filter plate of binary channels, filtering accuracy is 50 mesh；
E, continuous casting and rolling：By case bast mouth before casting and rolling machine for stream, by casting and rolling machine Casting Roller, by liquid aluminium in roll casting zone
Blank of the alloy melt casting into thickness for 7.0mm；Wherein, preceding 698 DEG C of case melt temperature, host speed 1080m/min, roll gap
4.7mm, roll 52mm, bast mouth opening degree 12mm, preload force 200T, coiling tension：52kn, roll casting speed 970mm/
Min, 36 DEG C of cooler-water temperature.
Cold-rolling process：Blank is first cold-rolled to 4.8mm, then carries out first time annealing：Moved back when making annealing treatment for the first time
Fiery in-furnace temperature is 590 DEG C, heats 16h, and when Preform surface temperature reaches 468 DEG C, annealing in-furnace temperature is down to 465 DEG C,
Keep the temperature 5h；Blank coarse rolling after first time is made annealing treatment then carries out double annealing processing to 0.28mm：Double annealing is handled
When in-furnace temperature of annealing be 210 DEG C, heat 9h, when Preform surface temperature reaches 168 DEG C, the temperature in annealing furnace be down to 200
DEG C, keep the temperature 7h.
The processing of paper tinsel pressure：Blank finish rolling after double annealing is handled is into the aluminum foil coil that thickness is 0.03mm, by aluminum foil coil point
Finished product aluminum foil for lithium battery can be obtained by cutting.Tension force/speed rolling mode, AGC control models, forward pull 42N/ are selected during finish rolling
mm2, backward pull 38N/mm2, mill speed 600m/min, roll-force 300T, 52 DEG C of oil temperature, oil pressure 3.6bar, flow 58%, rolls
Roll crown 0.06mm, Ra0.18 μm of gloss level of roll, rolling oil additives 6.5%；Forward pull 45N/mm after cutting2, backward pull
38N/mm2, speed 460m/min.
Obtained aluminum foil for lithium battery in the present embodiment is tested for the property, as a result actual (real) thickness is 0.031mm, tension
Intensity is 180N/mm2, elongation percentage 2.5%, 0/m of pinhole number2, opening a book property naturally droops ＜ 1.0m, dyne value 34.
Embodiment 5
Dispensing：Adjust the component and its mass percent of aluminum foil for lithium battery：Fe：0.42%；Si：0.12%；Cu：
0.06%；Ti：0.019%；Mn：≤ 0.03%；Mg：≤ 0.03%；Zn：≤ 0.03%；Surplus for Al and inevitably it is miscellaneous
Matter.
Melting, casting-rolling technology：The heating of above-mentioned aluminum foil for lithium battery is smelted into aluminium alloy melt；Then refined successively
Skim, crystal grain refinement, degasification slagging-off, filtration treatment, then the blank by the aluminium alloy melt continuous casting and rolling after filtering into 7.0mm.
Wherein, refining skim, crystal grain refinement, degasification slagging-off, filtration treatment, continuous casting and rolling it is specific as follows：
A, refining is skimmed：Aluminium alloy melt is gone to 12min is stood in standing furnace, the temperature of standing furnace is 750 DEG C, then
Multiple refining treatment is carried out, the time of first time nitrogen refining treatment is 18min, takes surface scum after having refined off, for the first time
Refining time is 25min (i.e. since second of refining treatment) after refining treatment, at intervals of 2h；
B, crystal grain refinement：Aluminium Ti, B grain graining agent is fed into machine by titanium silk and is added to degasification tank molten aluminum inlet, it is brilliant
The addition of grain fining agent is 3kg/ tons of aluminium alloy melts, and modifying-refining is carried out to melt；
C, degasification removes the gred：High pure nitrogen is passed through into degasification tank degasification is carried out to aluminium alloy melt, adjustment graphite rotator turns
Speed, ensures hydrogen content≤0.12ml/100gAl of molten aluminum；Hydrogen content≤0.12ml/100gAl in order to control, nitrogen gas purity requirement reach
To more than 99.995%, for nitrogen pressure in 0.4Mpa, the temperature of degasification tank melt is 730 DEG C, and by degasification tank when 1 is small
The scum silica frost that bath surface is floated up to nitrogen bubble is taken off；
D, filtration treatment：Removed the gred with the bipolar filter plate of binary channels, filtering accuracy is 50 mesh；
E, continuous casting and rolling：By case bast mouth before casting and rolling machine for stream, by casting and rolling machine Casting Roller, by liquid aluminium in roll casting zone
Blank of the alloy melt casting into thickness for 7.0mm；Wherein, preceding 690 DEG C of case melt temperature, host speed 1200m/min, roll gap
4.6mm, roll 60mm, bast mouth opening degree 11mm, preload force 260T, coiling tension：40kn, roll casting speed 980mm/
Min, 32 DEG C of cooler-water temperature.
Cold-rolling process：Blank is first cold-rolled to 4.8mm, then carries out first time annealing：Moved back when making annealing treatment for the first time
Fiery in-furnace temperature is 590 DEG C, heats 15h, and when Preform surface temperature reaches 475 DEG C, annealing in-furnace temperature is down to 460 DEG C,
Keep the temperature 6h；Blank coarse rolling after first time is made annealing treatment then carries out double annealing processing to 0.25mm：Double annealing is handled
When in-furnace temperature of annealing be 220 DEG C, heat 8h, when Preform surface temperature reaches 170 DEG C, the temperature in annealing furnace be down to 195
DEG C, keep the temperature 8h.
The processing of paper tinsel pressure：Blank finish rolling after double annealing is handled is into the aluminum foil coil that thickness is 0.03mm, by aluminum foil coil point
Finished product aluminum foil for lithium battery can be obtained by cutting.Tension force/speed rolling mode, AGC control models, forward pull 35N/ are selected during finish rolling
mm2, backward pull 40N/mm2, mill speed 500m/min, roll-force 350T, 50 DEG C of oil temperature, oil pressure 3.0bar, flow 65%, rolls
Roll crown 0.06mm, Ra0.2 μm of gloss level of roll, rolling oil additives 6.5%；Forward pull 50N/mm after cutting2, backward pull
40N/mm2, speed 400m/min.
Obtained aluminum foil for lithium battery in the present embodiment is tested for the property, as a result actual (real) thickness is 0.03mm, tension
Intensity is 173N/mm2, elongation percentage 2.2%, 0/m of pinhole number2, opening a book property naturally droops ＜ 1.0m, dyne value 33.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or supplement to described specific embodiment or substitute in a similar way, but simultaneously
The spirit or beyond the scope of the appended claims of the present invention is not deviated by.
It is skilled to this area although having been made a detailed description to the present invention and being cited some specific embodiments
For technical staff, as long as it is obvious that can make various changes or correct without departing from the spirit and scope of the present invention.
Claims (4)
1. a kind of annealing of aluminum foil for lithium battery, it is characterised in that the annealing includes the following steps：
Aluminum foil for lithium battery blank is first cold-rolled to 4.0-5.0mm, then carries out first time annealing；First time is made annealing treatment
Blank coarse rolling afterwards then carries out double annealing processing to 0.25-0.3mm；The component of the aluminum foil for lithium battery blank and its
Mass percent is：Fe：0.38-0.45%；Si：0.1-0.15%；Cu：0.03-0.06%；Ti：0.015-0.02%；Mn：
≤ 0.03%；Mg：≤ 0.03%；Zn：≤ 0.03%；Surplus is Al and inevitable impurity；
Wherein, in-furnace temperature of annealing when making annealing treatment for the first time is 585-590 DEG C, 15-20h is heated, when Preform surface temperature reaches
During to 460-475 DEG C, annealing in-furnace temperature is down to 460-480 DEG C, keeps the temperature 3-6h；
In-furnace temperature of annealing when double annealing is handled is 210-220 DEG C, 8-10h is heated, when Preform surface temperature reaches 165-170
DEG C, the temperature in annealing furnace is down to 195-205 DEG C, keeps the temperature 6-8h；
Aluminum foil for lithium battery heating is smelted into aluminium alloy melt by aluminum foil for lithium battery blank before cold rolling；Then essence is carried out successively
Refining skim, crystal grain refinement, degasification slagging-off, filtration treatment；Again by the aluminium alloy melt continuous casting and rolling after filtering into 6.0-8.0mm's
Aluminum foil for lithium battery blank；Wherein, 690-700 DEG C of case melt temperature before when continuous casting and rolling is handled, roll gap 4.6-4.8mm, casting
Section length 55-60mm, bast mouth opening degree 11-12mm, preload force 180-260t, coiling tension：40-60kN, roll casting speed 950-
980mm/min, 32-38 DEG C of cooler-water temperature；
Aluminum foil for lithium battery blank double annealing is handled after cold rolling after aluminium foil finish rolling into thickness be 0.01-0.05mm aluminium
Paper tinsel is rolled up, and aluminum foil coil cutting can be obtained finished product aluminum foil for lithium battery；Forward pull is 35-50N/mm when aluminum foil coil finish rolling is handled2, after
Tension force is 35-40N/mm2, mill speed 500-700m/min, roll-force 250-350t, oil temperature is 50-55 DEG C, and oil pressure is
3.0-4.0bar, flow 50-65%, roll crown 0.06mm, Ra0.12-0.2 μm of gloss level of roll, rolling oil additives
For 6-8%.
2. the annealing of aluminum foil for lithium battery according to claim 1, it is characterised in that the refining is skimmed specific
For：Aluminium alloy melt is first stood into 12-18min, then carries out multiple refining treatment, the time of first time refining treatment is 18-
The refining time of 22min, second of refining treatment and later refining treatment is 20-25min, at intervals of 2h-3h.
3. the annealing of aluminum foil for lithium battery according to claim 1, it is characterised in that molten aluminum when degasification removes Slag treatment
Hydrogen content≤0.12ml/100gAl, nitrogen gas purity more than 99.995%, nitrogen pressure 0.4-0.5MPa, degasification tank melt
Temperature be 720-730 DEG C.
4. the annealing of aluminum foil for lithium battery according to claim 1, it is characterised in that the aluminum foil for lithium battery
Component and its mass percent are：Fe：0.38-0.42%；Si：0.12-0.15%；Cu：0.04-0.06%；Ti：0.018-
0.02%；Mn：≤ 0.03%；Mg：≤ 0.03%；Zn：≤ 0.03%；Surplus is Al and inevitable impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510417167.2A CN105063520B (en) | 2015-07-15 | 2015-07-15 | A kind of annealing of aluminum foil for lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510417167.2A CN105063520B (en) | 2015-07-15 | 2015-07-15 | A kind of annealing of aluminum foil for lithium battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105063520A CN105063520A (en) | 2015-11-18 |
| CN105063520B true CN105063520B (en) | 2018-05-11 |
Family
ID=54493019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510417167.2A Active CN105063520B (en) | 2015-07-15 | 2015-07-15 | A kind of annealing of aluminum foil for lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105063520B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107217175B (en) * | 2017-05-08 | 2019-11-15 | 永杰新材料股份有限公司 | A kind of battery high-performance aluminium foil and its production method |
| CN107785532B (en) * | 2017-09-29 | 2021-10-15 | 梅丹妮 | Aluminum foil for improving safety performance of battery and preparation method and application thereof |
| JP7312760B2 (en) * | 2017-11-21 | 2023-07-21 | スペイラ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Battery electrode foil for the production of lithium-ion accumulators |
| CA3081028C (en) * | 2017-11-21 | 2022-08-30 | Hydro Aluminium Rolled Products Gmbh | High-strength battery electrode foil for the manufacture of lithium-ion accumulators |
| CN109266913B (en) * | 2018-12-03 | 2021-01-08 | 江苏大亚铝业有限公司 | Preparation method of 1100D alloy 9-micrometer double-sided light aluminum foil for lithium battery |
| CN112893464A (en) * | 2021-01-13 | 2021-06-04 | 安徽力幕新材料科技有限公司 | Processing method of aluminum foil for power battery |
| CN114309120A (en) * | 2021-12-31 | 2022-04-12 | 镇江龙源铝业有限公司 | Preparation method of aluminum strip for high-frequency welded pipe |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102329990B (en) * | 2011-07-30 | 2016-01-20 | 湖南晟通科技集团有限公司 | A kind of method of aluminium alloy and two zero paper tinsel of manufacture thereof |
| CN102329991A (en) * | 2011-07-30 | 2012-01-25 | 湖南晟通科技集团有限公司 | Aluminum alloy and method for manufacturing double-zero foil by using same |
| CN102329989B (en) * | 2011-07-30 | 2016-05-25 | 晟通科技集团有限公司 | A kind of method of aluminum alloy materials and manufacture double-zero aluminum foil thereof |
| CN102409199B (en) * | 2011-11-15 | 2014-04-30 | 镇江鼎胜铝业股份有限公司 | Household aluminum foil material and preparation method of household aluminum foil |
| CN102492900A (en) * | 2011-12-09 | 2012-06-13 | 镇江鼎胜铝业股份有限公司 | Method for producing wide-amplitude double-zero aluminum foil blank by adopting cast-rolled compact |
| CN102943191A (en) * | 2012-11-13 | 2013-02-27 | 镇江鼎胜铝业股份有限公司 | High-performance double-zero aluminum foil material and manufacturing method thereof |
| CN103084805B (en) * | 2013-01-15 | 2016-09-07 | 洛阳龙鼎铝业有限公司 | A kind of 1235 double zero foil production process |
| CN104388766B (en) * | 2014-11-27 | 2017-01-11 | 广西南南铝箔有限责任公司 | Production method of aluminum foil for lithium-ion battery |
-
2015
- 2015-07-15 CN CN201510417167.2A patent/CN105063520B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105063520A (en) | 2015-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105063429B (en) | A kind of preparation method of aluminum foil for lithium battery | |
| CN105063520B (en) | A kind of annealing of aluminum foil for lithium battery | |
| CN107217175B (en) | A kind of battery high-performance aluminium foil and its production method | |
| CN105018799A (en) | Aluminum foil for lithium battery | |
| CN107012370B (en) | High-performance 1230A alloy lithium ion battery aluminium foils and preparation method thereof | |
| CN102912192B (en) | 1050 alloy CTO (computer-to-plate) substrate and preparation method thereof | |
| CN111074110B (en) | Production method of aluminum and aluminum alloy plate strip for new energy power battery case | |
| CN104775060B (en) | A kind of production of aluminum alloy continuous casting tandem rolling base and heat treatment method | |
| CN103084805B (en) | A kind of 1235 double zero foil production process | |
| CN109988948B (en) | 5182-O state aluminum alloy plate for automobile inner plate and production method thereof | |
| CN106929719B (en) | A kind of preparation method of aluminium foil used for automobile air conditioning | |
| CN103436746B (en) | Special rare-earth containing aluminium Alloy Foil of a kind of lug and preparation method thereof | |
| CN102234750A (en) | Production method of aluminum foil for lithium battery | |
| CN102191414B (en) | Production method of aluminum alloy cable strap material | |
| CN108588499B (en) | CTP printing plate-based aluminum strip and preparation process thereof | |
| CN109266913B (en) | Preparation method of 1100D alloy 9-micrometer double-sided light aluminum foil for lithium battery | |
| CN111809089B (en) | 3004 aluminum alloy bottle cap material and preparation method thereof | |
| CN104060132A (en) | Novel aluminum alloy and method for manufacturing aluminum foil with high deep-drawing performance by continuous cast-rolling | |
| CN102492900A (en) | Method for producing wide-amplitude double-zero aluminum foil blank by adopting cast-rolled compact | |
| CN102284836A (en) | Method for preparing ultra-wide nickel alloy strip/foil with heavy volume weight | |
| CN109868398B (en) | 6xxx series aluminum alloy plate with high flanging performance and preparation method thereof | |
| CN111276276A (en) | High-extension cable foil and manufacturing method thereof | |
| CN101948972A (en) | Aluminum alloy strip for refrigerator and manufacturing method thereof | |
| CN102168212A (en) | Aluminium alloy lamp cap material and production method of the aluminium alloy lamp cap material | |
| CN101338392B (en) | Method for producing aluminum alloy medicinal foil by hot-rolling method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |