CN102899531B - Double zero aluminum foil with thickness of 0.004-0.0048 mm, and preparation method thereof - Google Patents
Double zero aluminum foil with thickness of 0.004-0.0048 mm, and preparation method thereof Download PDFInfo
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- CN102899531B CN102899531B CN201210323457.7A CN201210323457A CN102899531B CN 102899531 B CN102899531 B CN 102899531B CN 201210323457 A CN201210323457 A CN 201210323457A CN 102899531 B CN102899531 B CN 102899531B
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Abstract
The present invention relates to a double zero aluminum foil with a thickness of 0.004-0.0048 mm. The double zero aluminum foil has the following components, by weight, 0.38-0.45% of Fe, 0.10-0.15% of Si, less than or equal to 0.06% of titanium (Ti), less than or equal to 0.03% of copper (Cu), less than or equal to 0.03% of manganese (Mn), less than or equal to 0.03% of magnesium (Mg), less than or equal to 0.03% of zinc (Zn), less than or equal to 0.03% of vanadium (V), and the balance of aluminum (Al). The present invention further relates to a main production process for the double zero aluminum foil with the thickness of 0.004-0.0048 mm, wherein the production process comprises: smelting, casting rolling, cold rolling, intermediate annealing, cold rolling, rough rolling, medium rolling, double folding with a folding coiler, four folding with the folding coiler, four folding fine rolling, coil cutting, slitting, finished product annealing, and packaging.
Description
(1) technical field
The invention belongs to aluminium foil processing technique field, especially relate to a kind of double-zero aluminum foil and manufacture method thereof.
(2) background technology
Aluminium foil is mainly as wrapping material.Require surface aesthetic, light, airtight, not injured surface, there is no the defect such as oil mark and corrosion spot.The thickness of aluminium foil, for being less than or equal to 0.2mm, is generally 0.2-0.006mm.Aluminum foil rolling is except having the general character of general aluminium alloy plate material products, and along with rolling of thickness is thin, rolling load no longer plays an important role.The aluminium foil stock that 0.5mm is thick rolls after 0.05mm, then when the thin rolling, upper working rolls and lower working rolls has mutually pressed in the time of running no-load.After aluminium foil is nipped, the roll surface on rolling both sides is still in partly or entirely pressing state, there is serious elastic flattening in roll, this has just formed without roll gap rolling state, now, when aluminum foil rolling, rolling load has not had this effect, and will adjust aluminum foil thickness, only these two key factors of reliable adjustment roll speed and tension force.Be less than the aluminium foil of 0.01mm for thickness, at present in double-zero aluminum foil preparation method, extensively adopt melting-casting-cold rolling-process annealing-cold rolling-roughing-in roll-finish rolling pairing or coiling machine pairing finish rolling-cut-finished products.Be very difficult by the method for uni-tension rolling, therefore, produced the technique of finishing mill pairing rolling.Normally two aluminium foils are piled up, centre adds lubricated being rolled, rely on the variation of Frotteurism between working roll and rolling stock, along with the raising of roll speed, the increase of the cutting oil amount of bringing into, lubricating status between roll and stocking is changed, frictional coefficient diminishes, oil film thickening, aluminum foil thickness is attenuate thereupon, this kind of technique, be called pairing rolling technology, produce only the aluminium foil of 0.005-0.05mm by this technique, and for the less double-zero aluminum foil of thickness, prior art produces bottleneck.
(3) summary of the invention
In order to break the bottleneck of double-zero aluminum foil thickness in prior art, thinner, the pin hole that the invention provides a kind of 0.004～0.0048mm still less, surface is clean without Residual oil, good mechanical performance double-zero aluminum foil.
The present invention also aims to the preparation method of the double-zero aluminum foil that a kind of 0.004～0.0048mm is provided.
The technical scheme that the present invention solves its technical problem is:
The preparation method of the double-zero aluminum foil of a kind of 0.004～0.0048mm, it represents its composition with weight percent, batching composition includes iron Fe0.38～0.45%, Si0.10～0.15%, titanium Ti≤0.06%, copper Cu≤0.03%, manganese Mn≤0.03%, magnesium Mg≤0.03%, zinc Zn≤0.03%, vanadium V≤0.03%, surplus is aluminium Al, and concrete production process is as follows:
A, melting
By furnace charge heat fused, obtain aluminium alloy melt, when reaching 730～760 DEG C, temperature skims, sampling analysis, carry out composition adjustment according to analytical results, after composition is qualified, to carry out refining, skim, adjust temperature, aluminium alloy melt tapping temperature is 750 DEG C;
B, refining
Aluminium alloy melt metaideophone is carried out to nitrogen refining after standing furnace leaves standstill 10 minutes, and refining time 20～25min, carried out a nitrogen refining afterwards every 2 hours in standing furnace;
C, grain refining
Aluminium alloy melt enters degasification tank, adds al-ti-b refiner to carry out grain refining in degasification tank, and add-on is 2～3kg/ ton aluminium;
D, online degasification slagging-off
In high pure nitrogen refining degasification for degasification tank;
E, filtration
Carry out filter cleaner through filter box;
F, continuous casting and rolling
By casting and rolling machine, the casting of liquid metal aluminium alloy melt is become to 6.0～8.0mm strip;
G, cold rolling
Strip is carried out being rolled into the cold rolling blank that 0.2～0.3mm is thick after continuous rolling and process annealing;
H, rolling
Cold rolling blank thick 0.2～0.3mm is rolled down to the aluminium foil of 0.010～0.012mm;
I, coiling machine pairing
The aluminum foil coil pairing that is 0.010～0.012mm by single thickness becomes the pairing aluminum foil coil that double sheet total thickness is 0.020～0.024mm;
J, coiling machine close in pairs
The aluminum foil coil that is 0.020～0.024mm by double sheet total thickness again pairing to become four total thickness be 0.040～0.048mm closes in pairs aluminum foil coil;
K, close finish rolling in pairs
What to be 0.040～0.048mm by four total thickness close in pairs aluminum foil coil closed by finishing mill that to be rolled into four total thickness be 0.016mm～0.0192mm in pairs closes aluminum foil coil in pairs;
1, reel bundling
What reel was 0.016mm～0.0192mm by four total thickness close aluminum foil coil is in pairs divided into the pairing aluminum foil coil that double sheet total thickness is 0.008mm～0.0096mm;
M, cutting machine are cut
The pairing aluminum foil coil that cutting machine is 0.008mm～0.0096mm by double sheet total thickness divides individual aluminum foil coil of 0.004～0.0048mm that is cut to user's required thickness;
N, finished products
In box-type furnace, carry out finished products, obtain and meet 0.004～0.0048mm aluminium foil that user requires.
As preferably, in step b, the temperature of standing furnace is controlled at 740～750 DEG C.
As preferably, in steps d, the temperature of degasification tank remains on 730～740 DEG C, and described nitrogen is that mass percent is 99.995% high pure nitrogen, while unloading volume, the scum silica frost that floats up to bath surface with nitrogen bubble in degasification tank is taken off at every turn.
As preferably, in step e, to adopt two channels, filtering accuracy be the twin-stage ceramic filter plate of 40PPI and 70PPI to strumbox.
As preferably, in step g, cast-rolling stock is rolling to 3.0～5.0mm, then carries out a homogenizing process annealing, after a homogenizing process annealing is cooling, be rolling to 0.5～0.7mm, carry out secondary process annealing, after secondary process annealing is cooling, be rolled into the cold rolling blank that 0.2～0.3mm is thick.
As preferably, in step h, by roughing, cold rolling blank thick 0.2～0.3mm is rolled down to 0.03～0.06mm, then by roll goods material thick 0.03～0.06mm be rolled down to 0.010～0.012mm.
As preferably, the aluminium foil after step n is packaged in wooden case by suspension type.
The present invention adopts one to close in pairs finish rolling production technique and produces 0.004～0.0048mm double-zero aluminum foil product.The main production process that the present invention produces 0.004～0.0048mm double-zero aluminum foil be melting-casting-cold rolling-process annealing-cold rolling-roughing-in roll-coiling machine pairing-coiling machine close in pairs-close in pairs finish rolling-bundling-cut-finished products-packaging.
Beneficial effect of the present invention is: the present invention is by the improvement to production technique; the brand-new finish rolling production technique of closing in pairs; making it possible to produce thickness is the double-zero aluminum foil that 0.004～0.0048mm is even thinner; break through the bottleneck of existing production technique; provide thinner, pin hole still less, surface clean aluminium foil and preparation method without Residual oil, good mechanical performance; and facility investment is few, can accomplish scale production.
(4) embodiment
Below by embodiment, the present invention is described in further detail.
Embodiment mono-:
The double-zero aluminum foil of a kind of 0.004mm, represent its composition with weight percent, batching composition includes iron Fe0.38%, silicon Si0.10%, titanium Ti0.06%, copper Cu0.03%, manganese Mn0.03%, magnesium Mg0.03%, zinc Zn0.03%, vanadium V0.03%, surplus is aluminium Al.
The preparation method of above-mentioned 0.004mm double-zero aluminum foil, its concrete production process is as follows:
A, melting
Aluminium ingot will be prepared in proportion and waste material joins in reverberatory furnace, can be close toward quantity not sufficient when batching, can realize composition adjustment by below reinforced like this, carry out heat fused, obtain aluminium alloy melt, after heat fused, fully stir, in the time that temperature reaches 730～760 DEG C, skim, sampling analysis, add Fe, Si to carry out composition adjustment according to analytical results, the qualified rear nitrogen injection refining of composition, skim, adjust temperature, 750 DEG C of aluminium alloy melt tapping temperatures, can certainly be by watering down to realize composition adjustment;
B, refining
Aluminium alloy melt metaideophone after leaving standstill 10 minutes, standing furnace is carried out to a nitrogen refining, refining time 20～25min, takes surface scum off after refining is complete, and the temperature of standing furnace is controlled at 740～750 DEG C, standing furnace is interior every a nitrogen refining in 2 hours afterwards, and refining time is 20～25min;
C, grain refining
Aluminium alloy melt enters degasification tank, adds al-ti-b refiner to carry out grain refining by titanium silk feeding machine in the aluminium liquid ingress of degasification tank, and add-on is 2～3kg/ ton aluminium, and melt is carried out to modifying-refining;
D, online degasification slagging-off
Aluminium alloy melt is through degasification tank, the high pure nitrogen that is 99.995% by mass percent carries out dehydrogenation, when online degasification, the temperature of degasification tank remains on 730～740 DEG C, make Hydrogen In Molten Aluminum Alloys content be less than 0.12ml/100gAl, and unload when volume at every turn the scum silica frost that floats up to bath surface with nitrogen bubble in degasification tank is taken off;
E, filtration
Carry out filter cleaner through filter box, it is the twin-stage ceramic filter plate of 40PPI and 70PPI that strumbox adopts two channels, filtering accuracy;
F, continuous casting and rolling
Aluminium alloy melt is pressed to titanium silk speed of feed 280～380mm/min by casting and rolling machine, 690～700 DEG C of melt temperatures in front case, main frame speed 1000～1200m/min, roll gap 4.6～4.8mm, roll 56～58mm, lip opening degree 10.5～12mm, preload force 180～260T, the casting of coiling tension 48～60KN process parameters range is produced into 6.5mm strip, through plate shape, grain fineness number, the detection of surface quality, adjustment, shearing, after up-to-standard, batch, realize and stablize casting, shut out cast-rolling stock;
G, cold rolling
By 6.5
± 0.3board rolling is to 4.0mm, then carry out a homogenizing process annealing, after a homogenizing process annealing is cooling, be rolling to 0.6mm, carry out secondary process annealing, after secondary process annealing is cooling, be rolled into the cold rolling blank that 0.28mm is thick, wherein a homogenizing process annealing of 4.0mm is to process 20～30h at 500～620 DEG C of furnace gas temperatures, then in the time that material temperature reaches 450～480 DEG C, furnace temperature is cooled at 460～490 DEG C and processes 5～10h, secondary process annealing is to process 10～20h at 400～500 DEG C of furnace gas temperatures, then in the time that material temperature reaches 350～380 DEG C, furnace temperature is cooled at 360～390 DEG C and processes 2～4h,
H, rolling
Cold rolling blank thick 0.28mm is rolled down to 0.05mm by roughing mode, then parks 24 hours, then by the mode of rolling be rolled down to the aluminium foil of 0.012mm;
I, coiling machine pairing
The aluminum foil coil pairing that is 0.012mm by single thickness becomes the pairing aluminum foil coil that double sheet total thickness is 0.024mm, can separate smoothly in order to meet two aluminium foils that add after high-power rolling, and in pairing oil, adding additive level is 0.6～0.7%;
J, coiling machine close in pairs
The aluminum foil coil that is 0.024mm by double sheet total thickness again pairing to become four total thickness be 0.048mm closes in pairs aluminum foil coil, F strain 35～45N/mm
2, backward pull 25～40N/mm
2, speed 300～500m/min, for four aluminium foils that meet after power rolling greatly can separate smoothly, in pairing oil, adding additive level is 0.6～0.7%;
K, close finish rolling in pairs
What to be 0.048mm by four total thickness close in pairs aluminum foil coil closed by finishing mill that to be rolled into four total thickness be 0.016mmmm in pairs closes aluminum foil coil in pairs, its pairing rolling double sheet being different from is in general sense folded), select tension force/speed rolling mode, AGC controls, F strain 35～50N/mm
2, backward pull 30～45N/mm
2, roll speed 600～700m/min, rolling load 250～350T, 50～55 DEG C of oil temperatures, oil pressure 3.0～4.0bar, flow 50～65%, roll crown 0.06mm, gloss level of roll Ra0.03～0.05 μ m, in order to meet power rolling greatly, in ROLLING OIL, additive control is between 9～10%;
1, reel bundling
What reel was 0.016mm by four total thickness close aluminum foil coil is in pairs divided into the pairing aluminum foil coil that double sheet total thickness is 0.008mm, reel F strain 35～50N/mm
2, backward pull 30～40N/mm
2, speed 300～500m/min;
M, cutting machine are cut
The pairing aluminum foil coil that cutting machine is 0.008mm by double sheet total thickness divides individual aluminum foil coil of 0.004mm that is cut to user's required thickness;
N, finished products
In box-type furnace, carry out finished products, obtain and meet the 0.004mm aluminium foil that user requires, specifically at 160～180 DEG C of furnace gas temperatures, process 8～15h, then at 200～220 DEG C of furnace gas temperatures, process 25～40h.
O, employing suspension type are packaged in wooden case, are transported in client's hand, and suspension type packaging can be avoided aluminum foil coil modification.
Adopt and close in pairs finish rolling method production technique, produce 0.004mm double-zero aluminum foil, product surface cleaning is without Residual oil, good mechanical performance, and leading indicator is as follows:
A) thickness deviation ± 5%;
B) tensile strength 60～90N/mm
2;
C) pinhole number <500/m
2;
D) pinhole diameter <0.2mm;
E) aluminium foil uncoiling is functional, and adhesivity is qualified, and surperficial swabbing reaches A level.
Embodiment bis-:
The double-zero aluminum foil of a kind of 0.004mm, represent its composition with weight percent, batching composition includes iron Fe0.45%, silicon Si0.15%, titanium Ti0.05%, copper Cu0.02%, manganese Mn0.02%, magnesium Mg0.02%, zinc Zn0.02%, vanadium V0.02%, surplus is aluminium Al.
The preparation method of above-mentioned 0.004mm double-zero aluminum foil, its concrete production process is as follows:
A, melting
Aluminium ingot will be prepared in proportion and waste material joins in reverberatory furnace, carry out heat fused, obtain aluminium alloy melt, after heat fused, fully stir, in the time that temperature reaches 730～760 DEG C, skim, sampling analysis, add Fe, Si to carry out composition adjustment according to analytical results, the qualified rear nitrogen injection refining of composition, skim, adjust temperature, 750 DEG C of aluminium alloy melt tapping temperatures;
B, refining
Aluminium alloy melt metaideophone after leaving standstill 10 minutes, standing furnace is carried out to a nitrogen refining, refining time 20～25min, takes surface scum off after refining is complete, and the temperature of standing furnace is controlled at 740～750 DEG C, standing furnace is interior every a nitrogen refining in 2 hours afterwards, and refining time is 20～25min;
C, grain refining
Aluminium alloy melt enters degasification tank, adds al-ti-b refiner to carry out grain refining by titanium silk feeding machine in the aluminium liquid ingress of degasification tank, and add-on is 2～3kg/ ton aluminium, and melt is carried out to modifying-refining;
D, online degasification slagging-off
Aluminium alloy melt is through degasification tank, the high pure nitrogen that is 99.995% by mass percent carries out dehydrogenation, when online degasification, the temperature of degasification tank remains on 730～740 DEG C, make Hydrogen In Molten Aluminum Alloys content be less than 0.12ml/100gAl, and unload when volume at every turn the scum silica frost that floats up to bath surface with nitrogen bubble in degasification tank is taken off;
E, filtration
Carry out filter cleaner through filter box, it is the twin-stage ceramic filter plate of 40PPI and 70PPI that strumbox adopts two channels, filtering accuracy;
F, continuous casting and rolling
Aluminium alloy melt is pressed to titanium silk speed of feed 280～380mm/min by casting and rolling machine, 690～700 DEG C of melt temperatures in front case, main frame speed 1000～1200m/min, roll gap 4.6～4.8mm, roll 56～58mm, lip opening degree 10.5～12mrm, preload force 180～260T, the casting of coiling tension 48～60KN process parameters range is produced into 6.5mm strip, through plate shape, grain fineness number, the detection of surface quality, adjustment, shearing, after up-to-standard, batch, realize and stablize casting, shut out cast-rolling stock;
G, cold rolling
By 6.5
± 0.3board rolling is to 4.0mm, then carry out a homogenizing process annealing, after a homogenizing process annealing is cooling, be rolling to 0.6mm, carry out secondary process annealing, after secondary process annealing is cooling, be rolled into the cold rolling blank that 0.28mm is thick, wherein a homogenizing process annealing of 4.0mm is to process 20～30h at 500～620 DEG C of furnace gas temperatures, then in the time that material temperature reaches 450～480 DEG C, furnace temperature is cooled at 460～490 DEG C and processes 5～10h, secondary process annealing is to process 10～20h at 400～500 DEG C of furnace gas temperatures, then in the time that material temperature reaches 350～380 DEG C, furnace temperature is cooled at 360～390 DEG C and processes 2～4h,
H, rolling
Cold rolling blank thick 0.28mm is rolled down to 0.05mm by roughing mode, then parks 24 hours, then by the mode of rolling be rolled down to the aluminium foil of 0.010mm;
I, coiling machine pairing
The aluminum foil coil pairing that is 0.010mm by single thickness becomes the pairing aluminum foil coil that double sheet total thickness is 0.020mm, can separate smoothly in order to meet two aluminium foils that add after high-power rolling, and in pairing oil, adding additive level is 0.5～0.6%;
J, coiling machine close in pairs
The aluminum foil coil that is 0.020mm by double sheet total thickness again pairing to become four total thickness be 0.040mm closes in pairs aluminum foil coil, F strain 35～45N/mm
2, backward pull 25～40N/mm
2, speed 300～500m/min, for four aluminium foils that meet after power rolling greatly can separate smoothly, in pairing oil, adding additive level is 0.5～0.6%;
K, close finish rolling in pairs
What to be 0.040mm by four total thickness close in pairs aluminum foil coil closed by finishing mill that to be rolled into four total thickness be 0.016mm in pairs closes aluminum foil coil in pairs, it is different from pairing rolling (double sheet is folded) in general sense, select tension force/speed rolling mode, AGC controls, F strain 35～50N/mm
2, backward pull 30～45N/mm
2, roll speed 500～600m/min, rolling load 250～350T, 50～55 DEG C of oil temperatures, oil pressure 3.0～4.0bar, flow 50～65%, roll crown 0.06mm, gloss level of roll Ra0.03～0.05 μ m, in order to meet power rolling greatly, in ROLLING OIL, additive control is between 7～8%;
1, reel bundling
What reel was 0.016mm by four total thickness close aluminum foil coil is in pairs divided into the pairing aluminum foil coil that double sheet total thickness is 0.008mm, reel F strain 35～50N/mm
2, backward pull 30～40N/mm
2, speed 300～500m/min;
M, cutting machine are cut
The pairing aluminum foil coil that cutting machine is 0.008mm by double sheet total thickness divides 0.004 individual aluminum foil coil that is cut to user's required thickness;
N, finished products
In box-type furnace, carry out finished products, obtain and meet the 0.004mm aluminium foil that user requires, specifically at 160～180 DEG C of furnace gas temperatures, process 8～15h, then at 200～220 DEG C of furnace gas temperatures, process 25～40h.
O, employing suspension type are packaged in wooden case, are transported in client's hand, and suspension type packaging can be avoided aluminum foil coil modification.
Adopt and close in pairs finish rolling method production technique, produce 0.004mm double-zero aluminum foil, product surface cleaning is without Residual oil, good mechanical performance, and leading indicator is as follows:
F) thickness deviation ± 5%;
G) tensile strength 60～90N/mm
2;
H) pinhole number <500/m
2;
I) pinhole diameter <0.2mm;
J) aluminium foil uncoiling is functional, and adhesivity is qualified, and surperficial swabbing reaches A level.
Embodiment tri-:
The double-zero aluminum foil of a kind of 0.0048mm, represent its composition with weight percent, batching composition includes iron Fe0.40%, silicon Si0.13%, titanium Ti0.05%, copper Cu0.02%, manganese Mn0.02%, magnesium Mg0.02%, zinc Zn0.02%, vanadium V0.02%, surplus is aluminium Al.
The preparation method of above-mentioned 0.0048mm double-zero aluminum foil, its concrete production process is as follows:
A, melting
Aluminium ingot will be prepared in proportion and waste material joins in reverberatory furnace, carry out heat fused, obtain aluminium alloy melt, after heat fused, fully stir, in the time that temperature reaches 730～760 DEG C, skim, sampling analysis, add Fe, Si to carry out composition adjustment according to analytical results, the qualified rear nitrogen injection refining of composition, skim, adjust temperature, 750 DEG C of aluminium alloy melt tapping temperatures;
B, refining
Aluminium alloy melt metaideophone after leaving standstill 10 minutes, standing furnace is carried out to a nitrogen refining, refining time 20～25min, takes surface scum off after refining is complete, and the temperature of standing furnace is controlled at 740～750 DEG C, standing furnace is interior every a nitrogen refining in 2 hours afterwards, and refining time is 20～25mm;
C, grain refining
Aluminium alloy melt enters degasification tank, adds al-ti-b refiner to carry out grain refining by titanium silk feeding machine in the aluminium liquid ingress of degasification tank, and add-on is 2～3kg/ ton aluminium, and melt is carried out to modifying-refining;
D, online degasification slagging-off
Aluminium alloy melt is through degasification tank, the high pure nitrogen that is 99.995% by mass percent carries out dehydrogenation, when online degasification, the temperature of degasification tank remains on 730～740 DEG C, make Hydrogen In Molten Aluminum Alloys content be less than 0.12ml/100gAl, and unload when volume at every turn the scum silica frost that floats up to bath surface with nitrogen bubble in degasification tank is taken off;
E, filtration
Carry out filter cleaner through filter box, it is the twin-stage ceramic filter plate of 40PPI and 70PPI that strumbox adopts two channels, filtering accuracy;
F, continuous casting and rolling
Aluminium alloy melt is pressed to titanium silk speed of feed 280～380mm/min by casting and rolling machine, 690～700 DEG C of melt temperatures in front case, main frame speed 1000～1200m/min, roll gap 4.6～4.8mm, roll 56～58mm, lip opening degree 10.5～12mm, preload force 180～260T, the casting of coiling tension 48～60KN process parameters range is produced into 6.5mm strip, through plate shape, grain fineness number, the detection of surface quality, adjustment, shearing, after up-to-standard, batch, realize and stablize casting, shut out cast-rolling stock;
G, cold rolling
By 6.5
± 0.3board rolling is to 4.0mm, then carry out a homogenizing process annealing, after a homogenizing process annealing is cooling, be rolling to 0.6mm, carry out secondary process annealing, after secondary process annealing is cooling, be rolled into the cold rolling blank that 0.28mm is thick, wherein a homogenizing process annealing of 4.0mm is to process 20～30h at 500～620 DEG C of furnace gas temperatures, then in the time that material temperature reaches 450～480 DEG C, furnace temperature is cooled at 460～490 DEG C and processes 5～10h, secondary process annealing is to process 10～20h at 400～500 DEG C of furnace gas temperatures, then in the time that material temperature reaches 350～380 DEG C, furnace temperature is cooled at 360～390 DEG C and processes 2～4h,
H, rolling
Cold rolling blank thick 0.28mm is rolled down to 0.05mm by roughing mode, then parks 24 hours, then by the mode of rolling be rolled down to the aluminium foil of 0.010mm;
I, coiling machine pairing
The aluminum foil coil pairing that is 0.010mm by single thickness becomes the pairing aluminum foil coil that double sheet total thickness is 0.020mm, can separate smoothly in order to meet two aluminium foils that add after high-power rolling, and in pairing oil, adding additive level is 0.5～0.7%;
J, coiling machine close in pairs
The aluminum foil coil that is 0.020mm by double sheet total thickness again pairing to become four total thickness be 0.040mm closes in pairs aluminum foil coil, F strain 35～45N/mm
2, backward pull 25～40N/mm
2, speed 300～500m/min, for four aluminium foils that meet after power rolling greatly can separate smoothly, in pairing oil, adding additive level is 0.5～0.7%;
K, close finish rolling in pairs
What to be 0.040mm by four total thickness close in pairs aluminum foil coil closed by finishing mill that to be rolled into four total thickness be 0.0192mm in pairs closes aluminum foil coil in pairs, it is different from pairing rolling (double sheet is folded) in general sense, select tension force/speed rolling mode, AGC controls, F strain 35～50N/mm
2, backward pull 30～45N/mm
2, roll speed 500～700m/min, rolling load 250～350T, 50～55 DEG C of oil temperatures, oil pressure 3.0～4.0bar, flow 50～65%, roll crown 0.06mm, gloss level of roll Ra0.03～0.05 μ m, in order to meet power rolling greatly, in ROLLING OIL, additive control is between 7～10%;
1, reel bundling
What reel was 0.0192mm by four total thickness close aluminum foil coil is in pairs divided into the pairing aluminum foil coil that double sheet total thickness is 0.0096mm, reel F strain 35～50N/mm
2, backward pull 30～40N/mm
2, speed 300～500m/min;
M, cutting machine are cut
The pairing aluminum foil coil that cutting machine is 0.0096mm by double sheet total thickness divides individual aluminum foil coil of 0.0048mm that is cut to user's required thickness;
N, finished products
In box-type furnace, carry out finished products, obtain and meet the 0.0048mm aluminium foil that user requires, specifically at 160～180 DEG C of furnace gas temperatures, process 8～15h, then at 200～220 DEG C of furnace gas temperatures, process 25～40h.
O, employing suspension type are packaged in wooden case, are transported in client's hand, and suspension type packaging can be avoided aluminum foil coil modification.
Adopt and close in pairs finish rolling method production technique, produce 0.0048mm double-zero aluminum foil, product surface cleaning is without Residual oil, good mechanical performance, and leading indicator is as follows:
K) thickness deviation ± 5%;
1) tensile strength 60～90N/mm
2;
M) pinhole number <500/m
2;
N) pinhole diameter <0.2mm;
O) aluminium foil uncoiling is functional, and adhesivity is qualified, and surperficial swabbing reaches A level.
Claims (7)
1. the preparation method of the double-zero aluminum foil of a 0.004～0.0048mm, it represents its composition with weight percent, batching composition includes iron Fe0.38～0.45%, silicon Si0.10～0.15%, titanium Ti≤0.06%, copper Cu≤0.03%, manganese Mn≤0.03%, magnesium Mg≤0.03%, zinc Zn≤0.03%, vanadium V≤0.03%, surplus is aluminium A1, and concrete production process is as follows:
A, melting
By furnace charge heat fused, obtain aluminium alloy melt, when reaching 730～760 DEG C, temperature skims, sampling analysis, carry out composition adjustment according to analytical results, after composition is qualified, to carry out refining, skim, adjust temperature, aluminium alloy melt tapping temperature is 750 DEG C;
B, refining
Aluminium alloy melt metaideophone is carried out to nitrogen refining after standing furnace leaves standstill 10 minutes, and refining time 20～25min, carried out a nitrogen refining afterwards every 2 hours in standing furnace;
C, grain refining
Aluminium alloy melt enters degasification tank, adds al-ti-b refiner to carry out grain refining in degasification tank, and add-on is 2～3kg/ ton aluminium;
D, online degasification slagging-off
In high pure nitrogen refining degasification for degasification tank;
E, filtration
Carry out filter cleaner through filter box;
F, continuous casting and rolling
By casting and rolling machine, the casting of liquid metal aluminium alloy melt is become to 6.0～8.0mm strip;
G, cold rolling
Strip is carried out being rolled into the cold rolling blank that 0.2～0.3mm is thick after continuous rolling and process annealing;
H, rolling
Cold rolling blank thick 0.2～0.3mm is rolled down to the aluminium foil of 0.010～0.012mm;
I, coiling machine pairing
The aluminum foil coil pairing that is 0.010～0.012mm by single thickness becomes the pairing aluminum foil coil that double sheet total thickness is 0.020～0.024mm;
J, coiling machine close in pairs
The aluminum foil coil that is 0.020～0.024mm by double sheet total thickness again pairing to become four total thickness be 0.040～0.048mm closes in pairs aluminum foil coil;
K, close finish rolling in pairs
What to be 0.040～0.048mm by four total thickness close in pairs aluminum foil coil closed by finishing mill that to be rolled into four total thickness be 0.016mm～0.0192mm in pairs closes aluminum foil coil in pairs;
1, reel bundling
What reel was 0.016mm～0.0192mm by four total thickness close aluminum foil coil is in pairs divided into the pairing aluminum foil coil that double sheet total thickness is 0.008mm～0.0096mm;
M, cutting machine are cut
The pairing aluminum foil coil that cutting machine is 0.008mm～0.0096mm by double sheet total thickness divides individual aluminum foil coil of 0.004～0.0048mm that is cut to user's required thickness;
N, finished products
In box-type furnace, carry out finished products, obtain and meet 0.004～0.0048mm aluminium foil that user requires.
2. the preparation method of the double-zero aluminum foil of a kind of 0.004～0.0048mm according to claim 1, is characterized in that: in described step b, the temperature of standing furnace is controlled at 740～750 DEG C.
3. the preparation method of the double-zero aluminum foil of a kind of 0.004～0.0048mm according to claim 1, it is characterized in that: in steps d, the temperature of degasification tank remains on 730～740 DEG C, described nitrogen is that mass percent is 99.995% high pure nitrogen, unloads when volume at every turn the scum silica frost that floats up to bath surface with nitrogen bubble in degasification tank is taken off.
4. the preparation method of the double-zero aluminum foil of a kind of 0.004～0.0048mm according to claim 1, is characterized in that: in described step e, strumbox employing two channels, filtering accuracy are the twin-stage ceramic filter plate of 40PPI and 70PPI.
5. the preparation method of the double-zero aluminum foil of a kind of 0.004～0.0048mm according to claim 1, it is characterized in that: in described step g, cast-rolling stock is rolling to 3.0～5.0mm, then carry out a homogenizing process annealing, after a homogenizing process annealing is cooling, be rolling to 0.5～0.7mm, carry out secondary process annealing, after secondary process annealing is cooling, be rolled into the cold rolling blank that 0.2～0.3mm is thick.
6. the preparation method of the double-zero aluminum foil of a kind of 0.004～0.0048mm according to claim 1, it is characterized in that: in described step h, by roughing, cold rolling blank thick 0.2～0.3mm is rolled down to 0.03～0.06mm, then by roll goods material thick 0.03～0.06mm be rolled down to 0.010～0.012mm.
7. the preparation method of the double-zero aluminum foil of a kind of 0.004～0.0048mm according to claim 1, is characterized in that: the aluminium foil after described step n is packaged in wooden case by suspension type.
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