CN102553920A - Production method of aluminum tape for base of printing plate - Google Patents
Production method of aluminum tape for base of printing plate Download PDFInfo
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- CN102553920A CN102553920A CN2011104394846A CN201110439484A CN102553920A CN 102553920 A CN102553920 A CN 102553920A CN 2011104394846 A CN2011104394846 A CN 2011104394846A CN 201110439484 A CN201110439484 A CN 201110439484A CN 102553920 A CN102553920 A CN 102553920A
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Abstract
The invention relates to a production method of aluminum tapes and in particular relates to a production method of an aluminum tape which is used for the base of a printing plate. The invention aims to solve the problems in the prior art that the aluminum tape products for printing plate bases have poor surface quality, poor dimensional precision, bad plate shape quality and high rejection rate and can not meet the requirements for surface quality of high-grade printing plates. The production method comprises a step of smelting, casting and rolling process, a step of cold rolling process, a step of foil rolling process and a step of cleaning and straightening process. The smelting, casting and rolling process comprises the following steps: feeding aluminum ingots into a smelting furnace for smelting, discharging, refining, removing slag, degassing and filtering. The cold rolling process comprises the step of cold-rolling cold-rolled coils under pressure with a cold-rolling machine. The foil rolling process comprises the step of foil-rolling aluminum tapes with a foil-rolling machine. The cleaning and straightening process comprises the step of straightening aluminum tapes with a tension straightening machine.
Description
Technical field
The present invention relates to a kind of production method of aluminium strip, especially relate to a kind of printing plate-based production method with aluminium strip.
Background technology
Aluminium is to use maximum in the non-ferrous metal, one of metal material that application surface is the widest, and it has a series of strong physics, chemistry and processing characteristics, and it is of many uses; High most advanced and sophisticated sci-tech product, high-grade building and ornament materials, communications and transportation, Aero-Space, lamp lighting, electronic product, printing plate-based etc.Since according to domestic original fabrication process printing plate-based with aluminium strip exist surface quality, dimensional accuracy, strip shape quality etc. all difficulty reach necessary requirement; And percent defective high with Fe, that Si content is controlled is improper; Can't satisfy the shortcoming of high-grade printing plate-based requirement to surface quality; Event CTP and high-grade color printing are printing plate-based mostly from external import, thereby also have very big blank for improving printing plate-based process aspect.
Summary of the invention
The present invention provides a kind of galley plate base to use the aluminum strip production method; Its mainly solve aluminium strip that prior art produces exist surface quality, dimensional accuracy, strip shape quality etc. all difficulty reach necessary requirement; And percent defective is high improper with Fe, the control of Si content, can't satisfy the problem of the printing plate-based requirement to surface quality of top grade.
Above-mentioned technical problem of the present invention mainly is able to solve through following technical proposals:
A kind of galley plate base of the present invention is used the aluminum strip production method, it is characterized in that described method may further comprise the steps:
(1) melting, casting-rolling technology:
A. drop into the fine aluminium ingot heats of purity more than 99.70%, do not allow to add waste material;
B. in smelting furnace, carry out melting, melting is accomplished the back and is added alloy, and Fe must add intermediate alloy, leaves standstill the back and drops into refining agent and carry out refining, and adjustment nitrogen pressure during refining guarantees that the height that nitrogen blows afloat aluminium liquid is no more than 15cm, and the refining completion was skimmed after 5 minutes;
C. aluminium liquid is fallen stove to leaving standstill in the stove; Start the injection refining machine after the completion of falling the stove aluminium liquid that leaves standstill in the stove is carried out repeatedly refining; Need adjustment pressure to guarantee that the aluminium liquid height that blows afloat is no more than 15cm equally, skim after each refining finishes, refining at regular intervals once;
D. adopt high pure nitrogen that aluminium liquid is carried out degasification, adjustment graphite rotator rotating speed, the hydrogen content≤0.11ml/100gAL of assurance aluminium liquid; Be control hydrogen content≤0.11ml/100gAl, adopt the online degasification rectification systems of SNIF, and nitrogen gas purity requires to reach more than 99.995%, nitrogen pressure is between 0.3-0.4MPa.
E. in the degassing procedure with certain speed to the adding fining agent of aluminium liquid to reach the effect of crystal grain thinning.
F. adopt filter to the filtration that removes the gred of aluminium liquid.
G. in the case, the adjustment cooling water pressure carried out casting through the casting roller, batches rolling by devices for taking-up again before aluminium liquid got into; Horizontal, the longitudinal thickness deviation of strict control cast strip guarantees transverse gage deviation≤0.02mm, longitudinal thickness deviation≤0.1mm, and convexity is between 0.02-0.05mm; Transverse plate forms parabola shaped, to both sides thickness attenuate gradually, does not allow to occur " M " type or " W " type from middle.
(2) cold-rolling process:
Parameter control during a. to the cold roll grinding.Adopt the irreversible cold-rolling mill of 1,850 four rollers rolling, backing roll is ground to plain-barreled roll, and cylindricity reaches 0.01mm; Working roll cylindricity 0.005, height is 0.04mm in the top working roll, bottom working roll is a plain-barreled roll; The working roll roughness is 0.32 ± 0.02mm; Tolerance is controlled at and can only just maybe can only bears, and does not allow positive and negative beating, double-working diameter deviation≤0.01mm.
B. it is cold rolling to utilize cold-rolling mill that cold rolling coil is depressed, and sprays ROLLING OIL when cold rolling and carries out cooling and lubricating, controlled rolling speed.The number of times of depressing is more than 6 times, and the thickness of at every turn depressing accounts for depresses 30～45% of preceding gross thickness; Require in the operation of rolling not allow to occur the dendritic tissue of pine tree, do not allow load mould, wipe scuffing etc.Drafts to cold rolling is optimized, and finds that the surface of cold rolling coil is best, does not have surface chromatic aberration, the dendritic decorative pattern of pine tree etc. when rolling schedule is depressed by above-mentioned passage.
(3) paper tinsel roll process:
A. the control of the parameter during roll dressing.Adopt the irreversible cold foil mill of 1,650 four rollers to be rolled; For guaranteeing camber, glacing flatness and the fineness after roll on aluminium volume surface; The present invention controls the high 0.07mm of being in the top working roll; The diameter difference at body of roll two ends is less than 0.001mm, and cylindricity is controlled at 0.005mm, and surface roughness is Ra0.24 ± 0.01um.
B. the paper tinsel process of rolling utilizes foil mill that band is rolled, and sprays ROLLING OIL and carries out cooling and lubricating, the front and back tension force of operation of rolling control band, the size of mill speed.Owing to do not carry out intermediate annealing before the aluminium volume is cold rolling, cause aluminium volume interior tissue internal stress bigger.Thereby the thickness of at every turn depressing when rolling account for depress before the 15-20% of gross thickness, can guarantee rolling carrying out smoothly.
Should strictly control the thickness deviation that aluminium is rolled up in the paper tinsel operation of rolling, guarantee the good of plate shape.
(4) degrease, straightening process
A. select for use based on the aligning unit of pure extension straightening technology aluminium strip is aligned.Before the aligning production board face is cleaned; Product passes through preparatory oil removing cleaning case, alkali cleaning case and rinse tank respectively during cleaning, reaches the purpose of raising product surface quality through the parameters (like rinse water temperature, temperature of oven, rinse water acid-base value, brush roll rotating speed, unit operation speed etc.) of strictness control aligning unit.Feed back to corresponding plat control system through the detected board form data of online detecting instrument of flatness; Elasticity according to supplied materials actual plate shape is different; By the expansion proportionality coefficient of plat control system, control the roll coil of strip with this and reach target call again through the plate shape of aligning through automatic each section of adjustment expansion flattening roller;
B. after aligning, promptly go out finished product.
As preferably, the time of melting is 4-5 hour among described step (1) b, and the temperature of melting is not higher than 760 ℃, and the time of leaving standstill after the melting is 20-30 minute.Smelting time is the ability according to equipment, and smelting temperature is selected not to be higher than 760 ℃, can guarantee carrying out smoothly of melting, can prevent the melt burning again, leaves standstill after the melting 20-30 minute, and the melt temperature homogenising makes composition more even simultaneously.
As preferably, be 15-20 minute to time of leaving standstill the each refining of aluminium liquid in the stove among described step (1) c, to leave standstill after 5-10 minute and skim, every 1.5-2 hour refining is once.15-20 minute refining can effectively reduce the inner dregginess of melt, and refining once in 1.5-2 hour had not only guaranteed the uniformity of composition but also further guaranteed the cleannes of melt.
As preferably, the rotating speed of graphite rotator is 300-400r/min among described step (1) d.In this speed, can effectively reduce the hydrogen content in the melt, guarantee the inside quality that aluminium strip is woollen.
As preferably, adopt one-level Al-Ti-B silk among described step (1) e, the feed speed of titanium silk is 250mm/min, guarantees grain structure evenly fine and closely woven of casting intralamellar part, casting plate two sides grain size is an one-level.
As preferably, Rose Box adopts the double medium filtration plate among described step (1) f, and filter is 50 orders, and guarantees that Rose Box does not have bypass, guarantees the effect of slagging-off.
As preferably, height was controlled at 0.1-0.2mm during the grinding of casting roller required among described step (1) g, in high symmetry at 0.005-0.01mm, roughness is controlled at 0.8um, the roll cylindricity is controlled at 0.005mm, roller directly is not less than 670mm; Preceding oven temperature, degree is controlled at 695-705 ℃, and preceding case liquid level 14-18mm rolls section length and is made as 45-50mm, and roll casting speed is controlled at 0.8-1.0m/min, and the control cooling water pressure is between 0.3-0.4MPa.The above technological parameter of strict control can effectively be controlled casting woollen plate shape and internal soundness.
As preferably, the ROLLING OIL viscosity among described step (2) b is 2.3-2.5mm
2/ s, acid number≤0.05mgKOH/g, hydroxyl value is 9-11mgKOH/g, saponification number is 3-5mgKOH/g.Simultaneously the cleaning equipment of ROLLING OIL is transformed, made the ROLLING OIL light transmittance be reached for one-level; Mill speed is controlled at 450～650m/min, and controlled rolling speed can effectively prevent the string layer, improves the surface quality of aluminium volume.
As preferably, the ROLLING OIL viscosity among described step (3) b is 1.85-1.95mm
2/ s, acid number≤0.08mgKOH/g, hydroxyl value is 1.5-3mgKOH/g, saponification number is 6-7mgKOH/g.Roll the optimization of ROLLING OIL for paper tinsel.The ROLLING OIL additive can cause film strength not enough very little, partial fracture, thus load mould and bright wisp appear.And additive is too many, causes viscosity too big, can cause the oil film skewness, and ROLLING OIL purges unclean, influences plate face quality.
As preferably, drafts is 0.4mm → 0.33mm → 0.27mm among described step (3) b; Average mill speed is controlled at 400-500m/min.This mill speed can guarantee the production efficiency of aluminium volume in the scope that does not influence the surface quality of rolling back aluminium volume.
As preferably, for the control of tension force and roll-force, require backward pull will be controlled at 3.5-4.5Kg/mm in the middle operation of rolling of described step (3)
2Scope, forward pull will be controlled at 4.5-5.5 Kg/mm
2Scope, the variation of tension force not only can cause broken belt too much, and can influence surface quality.The roll-force difference is the depth of parallelism of reflection milling train and the index of concentricity, also be the inhomogeneity index of reflection aluminum foil thickness, and the inequality of thickness will have a strong impact on printing plate-based serviceability with aluminium strip, so the roll-force difference must be controlled in 6 tons.
As preferably, adopt the thickness deviation of thickness reponse system in the said step (3) with control aluminium volume, adopt the template appearance to guarantee the plate shape of aluminium volume.The finished product thickness of strip tolerance that the present invention produces is within ± 3%, and band is smooth, band off-line glacing flatness≤10I, thick slightly both sides, centre are thin, both sides symmetrically, apleuria wave, side wave and middle deals shape.
As preferably, the pure extension aligning unit that said step (4) a adopts the PL800 of Sai Lima company to contain degrease involves in to aluminium that row cleans, aligning.This unit has been installed the expansion flattening roller that obtains technical patent, and this flattening roller is divided into 9 sections, can control its chamber that expands that freely stretches respectively by one for every section and form.Elasticity according to supplied materials actual plate shape is different, passes through the automatic expansion proportionality coefficient of adjusting each section of expansion flattening roller from 0-100 by plat control system again, controls the roll coil of strip with this and reaches target call through the plate shape of aligning.
The pure extension technology is a present whole world state-of-the-art plate shape tension straingtening technology, but to be the flexible of expansion flattening roller through free wxpansion apply radial tension to aluminum strip attached to it for it, makes product produce plastic deformation thereby produce stretching action.Simultaneously, the flexible of expansion roller can carry out in segmentation, on the width of sheet material, sheet material is divided between several region, again according to coming the actual conditions of flitch shape that the coefficient of expansion of each section of expansion roller is regulated respectively.The tighter zone of actual plate shape is increased the expansion roller to the coefficient of expansion that should section; Actual plate shape is reduced to expand roller to the coefficient of expansion that should section in the zone of pine; Thereby make flitch shape after the pure extension of overexpansion roller, to be greatly improved, thereby obtain the high good profile of flatness.Or tension force strong with domestic traditional stretch bending is rectified and is compared, and the pure extension technology is except carrying out also having the another one characteristics the aligning of subregion to production board shape.Traditional stretch bending is rectified or tension force is rectified all and will be aligned product through one group of very little smoothing roll system of diameter; And this kind smoothing roll system is because of very little with the contact area of product when product is aligned, so can be to the very big pressure of product surface generation when aligning.Under the effect of this high pressure; The aluminium ash that product surface is difficult to clean up just be easy to be bonded on the smoothing roll and along with the aligning process constantly carry out long-pending more big more; When aluminium ash greatly when to a certain degree becoming graininess; In the aligning zone, under the high pressure effect of smoothing roll, will form load mould on the plate face.But adopt the pure extension technology just not have this phenomenon; Because of the diameter of expansion roller is big, contact area was big when product was stretched, and it is very little that relative pressure just becomes; The aluminium ash is difficult to condense into piece under this less pressure effect, thereby in the generation of fundamentally having stopped load mould.
When operation should be aligned unit, band will pass through three cleaning cases and a baking oven earlier.At first the preparatory oil removing cleaning case of process cleans band plate face with the rinse water that pH value is lower, removes the surface band oil of a part in advance.Get into the alkali cleaning case afterwards, the alkali lye higher with pH value carries out alkali cleaning, and the ROLLING OIL that the plate face is remaining cleans up.Get into rinse tank at last, carry out rinsing, the ROLLING OIL and the alkali lye that remain on the plate face are cleaned up with clear water.Water temperature is not less than 60 ℃ during cleaning; The temperature of oven baking temperature is not less than 80 ℃, and the pH value of cleaning fluid is 10-12, and the rotating speed of brush roll is 1500-2000m/min; Machine row speed is 150-200m/min; Can guarantee glacing flatness and surface quality that band is higher, reduce the blemish of band, production efficiency is effectively improved.The strip surface that this invention is produced is clean, smooth, and the horizontal coarse scope in surface is between 0.18um-0.28um, and plate face glacing flatness is in 5I.
Therefore, printing plate-based surface quality and the strip shape quality with aluminium strip that the present invention produces can both obtain better controlling, and can guarantee dimensional accuracy of products effectively.Can satisfy high-grade printing to printing plate-based requirement.
The specific embodiment
Through embodiment, do further bright specifically below to technical scheme of the present invention.
Embodiment 1: a kind of printing plate-based production method with aluminium strip of this example the steps include:
(1) melting, casting-rolling technology:
A. dropping into purity is the fine aluminium ingot heats more than 99.70%, does not allow to add waste material;
B. in smelting furnace, carry out melting, the time of melting is 4 hours, and the temperature of melting is 760 ℃; After accomplishing, melting adds corresponding alloy; Leave standstill after 20 minutes and to drop into refining agent and carry out refining, adjustment nitrogen pressure during refining guarantees that the height that nitrogen blows afloat aluminium liquid is no more than 15cm; Refining time is 20 minutes, and refining is skimmed after accomplishing;
C. aluminium liquid is fallen stove to leaving standstill in the stove, the temperature in when falling the stove is no more than 740 ℃, and leaving standstill furnace temperature is 730 ℃; Start the injection refining machine after the completion of falling the stove aluminium liquid that leaves standstill in the stove is carried out repeatedly refining; And adjustment pressure, guarantee that the height that nitrogen blows afloat aluminium liquid is no more than 15cm, every at a distance from refining in 1.5 hours once; Each refining time is 15 minutes, leaves standstill after 5 minutes and skims;
D. adopt 99.995% high pure nitrogen that aluminium liquid is carried out degasification, adjustment graphite rotator rotating speed is 300r/min, guarantees the hydrogen content≤0.11ml/100gAl of aluminium liquid;
E. the speed with 250m/min feeds the Al-Ti-B silk in the aluminium liquid of degasification tank, guarantees that casting plate two sides grain size is one-level.
F. adopt 50 purpose double medium filtration plates that aluminium liquid is filtered.
G. in the case, the adjustment cooling water pressure was 0.3MPa, carries out casting through the casting roller before aluminium liquid was sent into; Batch rolling by devices for taking-up again, height was controlled at 0.1mm during the grinding of casting roller required, in high symmetry at 0.005mm; Roughness is 0.8um, and the roll cylindricity reaches 0.005mm; Preceding oven temperature, degree is controlled at 695 ℃, and preceding case liquid level 15mm rolls section length and is made as 45mm, and roll casting speed is controlled at 1m/min, controls casting woollen plate shape and internal soundness thus.
(2) cold-rolling process:
A. cold roll is carried out grinding, adopt 1850 cold-rolling mills rolling, backing roll is ground to plain-barreled roll; Cylindricity reaches 0.01mm, working roll cylindricity 0.005mm, and height is 0.04mm in the top working roll; Bottom working roll is a plain-barreled roll, working roll roughness 0.30mm, two roller diameter deviation 0.01mm;
B. it is cold rolling to utilize cold-rolling mill that cold rolling coil is depressed, and sprays ROLLING OIL when cold rolling and carries out cooling and lubricating, and controlling average mill speed is 400m/min.Rolling pass is that 7.0mm → 4.0mm → 2.5mm → 1.55mm is put rolling → 1.0mm → 0.65mm → 0.40mm after 24 hours, places to cut edge widely to 1050mm after 24 hours, and the cast-rolling stock thick with 7.0mm is example, and drafts is as shown in the table:
| Passage | 1 | 2 | 3 | 4 | 5 | 6 |
| Supplied materials thickness (mm) | 7.00 | 4.00 | 2.50 | 1.55 | 1.00 | 0.65 |
| Finished product thickness (mm) | 4.00 | 2.50 | 1.55 | 1.00 | 0.65 | 0.4 |
| Absolute draft amount (%) | 3.00 | 1.50 | 0.95 | 0.55 | 0.35 | 0.25 |
| Relative reduction (%) | 42.86 | 37.50 | 38.00 | 35.48 | 35.00 | 38.46 |
| Total working modulus (%) before the final pass | 0.00 | 42.86 | 64.29 | 77.86 | 85.71 | 90.71 |
| Total working modulus (%) behind the final pass | 42.86 | 64.29 | 77.86 | 85.71 | 90.71 | 94.29 |
(3) paper tinsel roll process:
A. the control of the parameter during roll dressing.Adopt 1650 foil mills; For guaranteeing that camber, glacing flatness and fineness after roll on aluminium volume surface reach requirement, the present invention controls the high 0.07mm of being in the roll, and the diameter difference at body of roll two ends is less than 0.001mm; Cylindricity is controlled at 0.005mm, and surface roughness is 0.24um.
B. utilize foil mill that aluminium strip is carried out paper tinsel and roll, paper tinsel rolls and adds ROLLING OIL in the process, and rolling oil viscosity is 1.85mm
2/ s, the number of times of depressing are 2 times, and average speed is 450m/min, and the finished product thick with 0.27mm is example, and drafts is as shown in the table:
| Passage | 1 | 2 |
| Supplied materials thickness (mm) | 0.400 | 0.320 |
| Finished product thickness (mm) | 0.320 | 0.270 |
| Absolute draft amount (%) | 0.080 | 0.050 |
| Relative reduction (%) | 20.00 | 15.63 |
| Total working modulus (%) before the final pass | 0.00 | 20.00 |
| Total working modulus (%) behind the final pass | 20.00 | 32.50 |
(4) degrease, straightening process
A. the pure extension aligning unit that adopts the PL800 of Sai Lima company to contain degrease involves in to aluminium that row cleans, aligning.This unit has been installed the expansion flattening roller that obtains technical patent, and this flattening roller is divided into 9 sections, can control its chamber that expands that freely stretches respectively by one for every section and form.When supplied materials is middle deals shape, suitably dwindle the coefficient of expansion of interlude and increase the coefficient of expansion of both sides portion, reach the purpose of stretching plate shape with this.When operation should be aligned unit, band will pass through three cleaning cases and a baking oven earlier.At first the preparatory oil removing cleaning case of process cleans band plate face with the rinse water that pH value is lower, removes the band oil of a part in advance.Get into the alkali cleaning case afterwards, the alkali lye higher with pH value carries out alkali cleaning, and the ROLLING OIL that the plate face is remaining cleans up.Get into rinse tank at last, carry out rinsing, the alkali lye that remains on the plate face is cleaned up with clear water.Water temperature is 60 ℃ during cleaning, and the temperature of oven baking temperature is 80 ℃, and the pH value of cleaning fluid is 10; The rotating speed of brush roll is 2000m/min; Machine row speed is 160m/min, under this technological parameter, can guarantee glacing flatness and surface quality that band is higher; Reduce the blemish of band, production efficiency is effectively improved.The strip surface that this invention is produced is clean, smooth, and the horizontal coarse scope in surface is at 0.18um-0.28um, and plate face glacing flatness is in 5I.
B. batch, check, pack behind the aligning and promptly go out finished product.
Embodiment 2: a kind of production method of printing base with aluminium strip of this example the steps include:
(1) melting, casting-rolling technology:
A. drop into the fine aluminium ingot heats of purity more than 99.70%, do not allow to add waste material;
B. in smelting furnace, carry out melting, the time of melting is 4.5 hours, and the temperature of melting is 750 ℃; After accomplishing, melting adds corresponding alloy; Leave standstill after 20 minutes and to drop into refining agent and carry out refining, adjustment nitrogen pressure during refining guarantees that the height that nitrogen blows afloat aluminium liquid is no more than 15cm; Refining time is 25 minutes, and refining is skimmed after accomplishing;
C. aluminium liquid is sent into and left standstill stove and fall stove, in when falling the stove, the temperature temperature is 740 ℃; Leaving standstill furnace temperature is 730 ℃; Start the injection refining machine after the completion of falling the stove aluminium liquid that leaves standstill in the stove is carried out repeatedly refining and adjusts pressure, guarantee that the height that nitrogen blows afloat aluminium liquid is no more than 15cm, each refining time was not less than 15 minutes; Leave standstill after 5 minutes and skim, whenever once at a distance from refining in 2 hours;
D. adopt 99.995% high pure nitrogen that aluminium liquid is carried out degasification, adjustment graphite rotator rotating speed is 350r/min, guarantees the hydrogen content≤0.11ml/100gAL of aluminium liquid;
E. feeding speed is the Al-Ti-B silk of 250m/min, guarantees that casting plate two sides grain size is an one-level.
F. adopt 50 purpose double medium filtration plates that aluminium liquid is filtered;
G. in the case, add hydraulic pressure before aluminium liquid is sent into, carry out casting by the casting roller, coil into cold rolling coil by devices for taking-up again, height was controlled at 0.15mm during the grinding of casting roller required, in high symmetry at 0.01mm, roughness is 0.85um, the roll cylindricity reaches 0.01mm; Preceding oven temperature, degree is controlled at 700 ℃, and preceding case liquid level 15mm rolls section length and is made as 48mm, and roll casting speed is controlled at 1.0mm/min, and the control cooling water pressure is at 0.35Mpa;
(2) cold-rolling process:
A. cold roll is carried out grinding, adopt 1850 cold-rolling mills rolling, backing roll is ground to plain-barreled roll; Cylindricity reaches 0.01mm, working roll cylindricity 0.005mm, and height is 0.04mm in the top roll; Lower roll is a plain-barreled roll, working roll roughness 0.34mm, two roller diameter deviation 0.01mm;
B. it is cold rolling to utilize cold-rolling mill that cold rolling coil is depressed, and adds ROLLING OIL when cold rolling, and controlled rolling speed is 330m/min.Rolling pass is that 7.0mm → 4.0mm → 2.5mm → 1.55mm is put rolling → 1.0mm → 0.65mm → 0.40mm after 24 hours, and placing cut edge after 24 hours rolls to paper tinsel to 1050mm is wide, and the cast-rolling stock thick with 7 ± 0.2mm is example, and drafts is as shown in the table:
| Passage | 1 | 2 | 3 | 4 | 5 | 6 |
| Supplied materials thickness (mm) | 7.00 | 4.00 | 2.50 | 1.55 | 1.00 | 0.65 |
| Finished product thickness (mm) | 4.00 | 2.50 | 1.55 | 1.00 | 0.65 | 0.4 |
| Absolute draft amount (%) | 3.00 | 1.50 | 0.95 | 0.55 | 0.35 | 0.25 |
| Relative reduction (%) | 42.86 | 37.50 | 38.00 | 35.48 | 35.00 | 38.46 |
| Total working modulus (%) before the final pass | 0.00 | 42.86 | 64.29 | 77.86 | 85.71 | 90.71 |
| Total working modulus (%) behind the final pass | 42.86 | 64.29 | 77.86 | 85.71 | 90.71 | 94.29 |
(3) paper tinsel roll process:
A. the control of roller parameter.Adopt 1650 foil mills, for guaranteeing camber, glacing flatness and the fineness after roll on aluminium volume surface, the present invention controls the high 0.07mm of being in the roll, and the diameter difference at body of roll two ends is less than 0.001mm, and cylindricity is controlled at 0.005mm, and surface roughness is 0.24um;
B. utilize foil mill that aluminium strip is carried out paper tinsel and roll, paper tinsel rolls and adds ROLLING OIL in the process, and the number of times of depressing is 2 times, and average speed is 500m/min, and the finished product thick with 0.27mm is example, and drafts is as shown in the table:
| Passage | 1 | 2 |
| Supplied materials thickness (mm) | 0.400 | 0.320 |
| Finished product thickness (mm) | 0.320 | 0.270 |
| Absolute draft amount (%) | 0.080 | 0.050 |
| Relative reduction (%) | 20.00 | 15.63 |
| Total working modulus (%) before the final pass | 0.00 | 20.00 |
| Total working modulus (%) behind the final pass | 20.00 | 32.50 |
(4) degrease, straightening process:
A. the pure extension aligning unit that adopts the PL800 of Sai Lima company to contain degrease involves in to aluminium that row cleans, aligning.This unit has been installed the expansion flattening roller that obtains technical patent, and this flattening roller is divided into 9 sections, can control its chamber that expands that freely stretches respectively by one for every section and form.When supplied materials is both sides deals shape, suitably dwindle the coefficient of expansion of both sides portion and increase the coefficient of expansion of interlude, reach the purpose of stretching plate shape with this.When operation should be aligned unit, band will pass through three cleaning cases and a baking oven earlier.At first the preparatory oil removing cleaning case of process cleans band plate face with the rinse water that pH value is lower, removes the band oil of a part in advance.Get into the alkali cleaning case afterwards, the alkali lye higher with pH value carries out alkali cleaning, and the ROLLING OIL that the plate face is remaining cleans up.Get into rinse tank at last, carry out rinsing, the alkali lye that remains on the plate face is cleaned up with clear water.Water temperature is 70 ℃ during cleaning, and the temperature of oven baking temperature is 90 ℃, and the pH value of cleaning fluid is 11; The rotating speed of brush roll is 1800m/min; Machine row speed is 180m/min, under this technological parameter, can guarantee glacing flatness and surface quality that band is higher; Reduce the blemish of band, production efficiency is effectively improved.The strip surface that this invention is produced is clean, smooth, and the horizontal coarse scope in surface is at 0.18um-0.28um, and plate face glacing flatness is in 5I.
B. promptly go out finished product behind the straightener aligning.
Embodiment 3: a kind of production method of printing base with aluminium strip of this example the steps include:
(1) melting, casting-rolling technology:
A. drop into the fine aluminium ingot heats of purity more than 99.70%, do not allow to add waste material;
B. in smelting furnace, carry out melting, the time of melting is 6 hours, and the temperature of melting is 740 ℃; After accomplishing, melting adds corresponding alloy; Leave standstill after 20 minutes and to drop into refining agent and carry out refining, adjustment nitrogen pressure during refining guarantees that the height that nitrogen blows afloat aluminium liquid is no more than 15cm; Refining time is no less than 20 minutes, and refining is skimmed after accomplishing;
C. aluminium liquid is sent into and left standstill stove and fall stove, in when falling the stove, temperature can not surpass the upper limit of smelting temperature; Leaving standstill furnace temperature is 740 ℃; Start the injection refining machine after the completion of falling the stove aluminium liquid that leaves standstill in the stove is carried out repeatedly refining and adjusts pressure, guarantee that the height that nitrogen blows afloat aluminium liquid is no more than 15cm, each refining time was not less than 15 minutes; Leave standstill after 5 minutes and skim, whenever once at a distance from refining in 2 hours;
D. adopt 99.995% high pure nitrogen that aluminium liquid is carried out degasification, adjustment graphite rotator rotating speed is 400r/min, guarantees the hydrogen content≤0.11ml/100gAL of aluminium liquid;
E. feeding speed is the Al-Ti-B silk of 250m/min, guarantees that casting plate two sides grain size is an one-level.
F. adopt 50 purpose double medium filtration plates that aluminium liquid is filtered;
G. in the case, add hydraulic pressure before aluminium liquid is sent into, carry out casting by the casting roller, coil into cold rolling coil by devices for taking-up again, height was controlled at 0.15mm during the grinding of casting roller required, in high symmetry at 0.01mm, roughness is 0.85um, the roll cylindricity reaches 0.01mm; Preceding oven temperature, degree is controlled at 700 ℃, and preceding case liquid level 15mm rolls section length and is made as 48mm, and roll casting speed is controlled at 1.0mm/min, and the control cooling water pressure is at 0.35Mpa;
(2) cold-rolling process:
A. cold roll is carried out grinding, adopt 1850 cold-rolling mills rolling, backing roll is ground to plain-barreled roll; Cylindricity reaches 0.01mm, working roll cylindricity 0.005mm, and height is 0.04mm in the top roll; Lower roll is a plain-barreled roll, working roll roughness 0.32mm, two roller diameter deviation 0.01mm;
B. it is cold rolling to utilize cold-rolling mill that cold rolling coil is depressed, and adds ROLLING OIL when cold rolling, and controlled rolling speed is 330m/min.Rolling pass is that 7.0 → 4.0 → 2.5 → 1.55mm is put rolling → 1.0 → 0.65 → 0.40mm after 24 hours, and placing cut edge after 24 hours rolls to paper tinsel to the wide back of 1050mm, and the cast-rolling stock thick with 7 ± 0.2mm is example, and drafts is as shown in the table:
| Passage | 1 | 2 | 3 | 4 | 5 | 6 |
| Supplied materials thickness (mm) | 7.00 | 4.00 | 2.50 | 1.55 | 1.00 | 0.65 |
| Finished product thickness (mm) | 4.00 | 2.50 | 1.55 | 1.00 | 0.65 | 0.4 |
| Absolute draft amount (%) | 3.00 | 1.50 | 0.95 | 0.55 | 0.35 | 0.25 |
| Relative reduction (%) | 42.86 | 37.50 | 38.00 | 35.48 | 35.00 | 38.46 |
| Total working modulus (%) before the final pass | 0.00 | 42.86 | 64.29 | 77.86 | 85.71 | 90.71 |
| Total working modulus (%) behind the final pass | 42.86 | 64.29 | 77.86 | 85.71 | 90.71 | 94.29 |
(3) paper tinsel roll process:
A. the control of roller parameter.Adopt 1650 foil mills, for guaranteeing camber, glacing flatness and the fineness after roll on aluminium volume surface, the present invention controls the high 0.07mm of being in the roll, and the diameter difference at body of roll two ends is less than 0.001mm, and cylindricity is controlled at 0.005mm, and surface roughness is 0.24um;
B. utilize foil mill that aluminium strip is carried out paper tinsel and roll, paper tinsel rolls and adds ROLLING OIL in the process, and the number of times of depressing is 2 times, and speed is 500m/min, and the finished product thick with 0.27mm is example, and drafts is as shown in the table:
| Passage | 1 | 2 |
| Supplied materials thickness (mm) | 0.400 | 0.320 |
| Finished product thickness (mm) | 0.320 | 0.270 |
| Absolute draft amount (%) | 0.080 | 0.050 |
| Relative reduction (%) | 20.00 | 15.63 |
| Total working modulus (%) before the final pass | 0.00 | 20.00 |
| Total working modulus (%) behind the final pass | 20.00 | 32.50 |
(4) degrease, straightening process
A. the pure extension aligning unit that adopts the PL800 of Sai Lima company to contain degrease involves in to aluminium that row cleans, aligning.This unit has been installed the expansion flattening roller that obtains technical patent, and this flattening roller is divided into 9 sections, can control its chamber that expands that freely stretches respectively by one for every section and form.When supplied materials is both sides of the chest deals shape, suitably dwindle the coefficient of expansion of both sides of the chest and increase the coefficient of expansion of limit portion and interlude, reach the purpose of stretching plate shape with this.When operation should be aligned unit, band will pass through three cleaning cases and a baking oven earlier.At first the preparatory oil removing cleaning case of process cleans band plate face with the rinse water that pH value is lower, removes the band oil of a part in advance.Get into the alkali cleaning case afterwards, the alkali lye higher with pH value carries out alkali cleaning, and the ROLLING OIL that the plate face is remaining cleans up.Get into rinse tank at last, carry out rinsing, the alkali lye that remains on the plate face is cleaned up with clear water.Water temperature is 80 ℃ during cleaning, and the temperature of oven baking temperature is 90 ℃, and the pH value of cleaning fluid is 12; The rotating speed of brush roll is 1500m/min; Machine row speed is 200m/min, under this technological parameter, can guarantee glacing flatness and surface quality that band is higher; Reduce the blemish of band, production efficiency is effectively improved.The strip surface that this invention is produced is clean, smooth, and the horizontal coarse scope in surface is at 0.18um-0.28um, and plate face glacing flatness is in 5I;
B. promptly go out finished product after aligning the unit aligning.
Claims (12)
1. a galley plate base is used the aluminum strip production method, it is characterized in that described method may further comprise the steps:
(1) melting, casting-rolling technology:
A. drop into the fine aluminium ingot heats of purity more than 99.70%, do not allow to add waste material;
B. in smelting furnace, carry out melting, add alloy after melting is accomplished, leave standstill back input refining agent and carry out refining, adjustment nitrogen pressure during refining, refining is skimmed after accomplishing;
C. aluminium liquid is fallen stove to leaving standstill in the stove, start the injection refining machine after the completion of falling the stove aluminium liquid that leaves standstill in the stove is carried out repeatedly refining and adjusts pressure, skim after each refining finishes, refining at regular intervals once;
D. adopt high pure nitrogen that aluminium liquid is carried out degasification, adjustment graphite rotator rotating speed, the hydrogen content≤0.11ml/100gAL of assurance aluminium liquid;
E. the fining agent of giving aluminium liquid feeding certain speed in the degassing procedure is to reach the effect of crystal grain thinning;
F. adopt filter to the filtration that removes the gred of aluminium liquid;
G. in the case, add hydraulic pressure before aluminium liquid is sent into, carry out casting, batch rolling by devices for taking-up again by the casting roller;
(2) cold-rolling process:
A. breaker roll carries out grinding process;
B. it is cold rolling to utilize cold-rolling mill that cold rolling coil is depressed, and sprays ROLLING OIL when cold rolling, and rolling pass is more than 6 times, and draught per pass accounts for the 25-45% of rolling preceding gross thickness;
(3) paper tinsel roll process:
A. breaker roll carries out grinding process;
B. utilize foil mill that aluminium strip is carried out paper tinsel and roll, paper tinsel rolls and adds ROLLING OIL in the process, and the number of times of depressing is 2 times, the 15-20% of gross thickness before the thickness of at every turn depressing accounts for and depresses;
(4) degrease, straightening process;
A. the aluminium strip after paper tinsel being rolled carries out degrease, stretch-bending straightening;
B. after aligning, promptly go out finished product.
2. galley plate base according to claim 1 is used the aluminum strip production method, it is characterized in that the time of melting among described step (1) b is 4-6 hour, and the temperature of melting is 740-760 ℃, and the time of leaving standstill after the melting is 20-30 minute.
3. galley plate base according to claim 1 is used the aluminum strip production method, it is characterized in that among described step (1) c that the time to leaving standstill the each refining of aluminium liquid in the stove is 15-20 minute, leaves standstill after 5-10 minute and skims, and every 1.5-2 hour refining once.
4. galley plate base according to claim 1 is used the aluminum strip production method, it is characterized in that the rotating speed of graphite rotator among described step (1) d is 300-400r/min.
5. galley plate base according to claim 1 is used the aluminum strip production method, it is characterized in that adopting the Al-Ti-B silk among described step (1) e, and the speed of titanium silk is 250m/min.
6. galley plate base according to claim 1 is used the aluminum strip production method, it is characterized in that described step (1) f Rose Box adopts the double medium filtration plate, and filter is 50 orders.
7. galley plate base according to claim 1 is used the aluminum strip production method; It is characterized in that among described step (1) g grinding of casting roller require in height be controlled at 0.1-0.2mm; In high symmetry at 0.005-0.01mm; Roughness is controlled at 0.8um, and the roll cylindricity is controlled at 0.005mm, and roller directly is not less than 670mm; Preceding oven temperature, degree is controlled at 695-705 ℃, and preceding case liquid level 14-18mm rolls section length and is made as 45-50mm, and roll casting speed is controlled at 0.8-1.0mm/min, and the control cooling water pressure is between 0.3-0.4Mpa.
8. galley plate base according to claim 1 is used the aluminum strip production method, it is characterized in that the ROLLING OIL viscosity among described step (2) b is 2.3-2.5mm
2/ s, acid number≤0.05mgKOH/g, hydroxyl value is 9-11mgKOH/g, saponification number is 3-5mgKOH/g.
9. galley plate base according to claim 1 is used the aluminum strip production method, it is characterized in that the ROLLING OIL viscosity among described step (3) b is 1.85-1.95mm
2/ s, acid number≤0.08mgKOH/g, hydroxyl value is 1.5-3.0mgKOH/g, saponification number is 6.0-7.0mgKOH/g.
10. galley plate base according to claim 1 is used the aluminum strip production method, it is characterized in that the thickness of depressing for the last time among described step (3) b accounts for the 15-20% that depresses preceding gross thickness, and speed is 400-500m/min.
11. galley plate base according to claim 1 is used the aluminum strip production method, it is characterized in that milling train is 3.5-4.5Kg/mm to the tension force that aluminium foil carries out before paper tinsel rolls among described step (3) b
2, the tension force after paper tinsel rolls is 4.5-5.5Kg/mm
2
12. galley plate base according to claim 1 is used the aluminum strip production method, it is characterized in that selecting for use among described step (4) a PL800 to contain the pure stretcher leveling unit of degrease.
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| CN102989770A (en) * | 2012-11-17 | 2013-03-27 | 镇江鼎胜铝业股份有限公司 | Method for producing curtain aluminium sheet belt by 3004 alloy cast rolling blank |
| CN103056918A (en) * | 2012-12-21 | 2013-04-24 | 深圳市柳鑫实业有限公司 | Aluminum sheet for improving accuracy of hole site of drill hole and manufacturing method |
| CN104624700A (en) * | 2014-12-31 | 2015-05-20 | 中铝西南铝冷连轧板带有限公司 | Production method of printing PS plate aluminum material through cold rolling and direct rolling |
| CN107377903A (en) * | 2017-06-26 | 2017-11-24 | 永杰新材料股份有限公司 | A kind of casting and rolling molding method and system of in-situ endogenic particle enhanced aluminum-based composite material |
| CN110000227A (en) * | 2019-04-22 | 2019-07-12 | 邹平宏发铝业科技有限公司 | The method for reducing Cold Rolling Aluminium Strip material tank material surface aluminium powder and Residual oil |
| CN114472523A (en) * | 2022-01-26 | 2022-05-13 | 永杰新材料股份有限公司 | Preparation method of high-brightness aluminum-plastic film aluminum foil and aluminum-plastic film aluminum foil |
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| CN102989770A (en) * | 2012-11-17 | 2013-03-27 | 镇江鼎胜铝业股份有限公司 | Method for producing curtain aluminium sheet belt by 3004 alloy cast rolling blank |
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| CN104624700A (en) * | 2014-12-31 | 2015-05-20 | 中铝西南铝冷连轧板带有限公司 | Production method of printing PS plate aluminum material through cold rolling and direct rolling |
| CN107377903A (en) * | 2017-06-26 | 2017-11-24 | 永杰新材料股份有限公司 | A kind of casting and rolling molding method and system of in-situ endogenic particle enhanced aluminum-based composite material |
| CN110000227A (en) * | 2019-04-22 | 2019-07-12 | 邹平宏发铝业科技有限公司 | The method for reducing Cold Rolling Aluminium Strip material tank material surface aluminium powder and Residual oil |
| CN114472523A (en) * | 2022-01-26 | 2022-05-13 | 永杰新材料股份有限公司 | Preparation method of high-brightness aluminum-plastic film aluminum foil and aluminum-plastic film aluminum foil |
| CN114472523B (en) * | 2022-01-26 | 2024-03-19 | 永杰新材料股份有限公司 | Preparation method of high-brightness aluminum plastic film aluminum foil and aluminum plastic film aluminum foil |
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