CN1081098C - Method and technique for producing aluminium foils by direct casting and rolling of electrolytic aluminium liquid - Google Patents
Method and technique for producing aluminium foils by direct casting and rolling of electrolytic aluminium liquid Download PDFInfo
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- CN1081098C CN1081098C CN98122565A CN98122565A CN1081098C CN 1081098 C CN1081098 C CN 1081098C CN 98122565 A CN98122565 A CN 98122565A CN 98122565 A CN98122565 A CN 98122565A CN 1081098 C CN1081098 C CN 1081098C
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 70
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 238000005266 casting Methods 0.000 title claims abstract description 49
- 239000007788 liquid Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005096 rolling process Methods 0.000 title claims abstract description 35
- 239000004411 aluminium Substances 0.000 title claims description 59
- 239000005030 aluminium foil Substances 0.000 title claims description 11
- 238000007670 refining Methods 0.000 claims abstract description 23
- 238000005516 engineering process Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 17
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 15
- 239000000956 alloy Substances 0.000 claims abstract description 15
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 238000000137 annealing Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 239000000919 ceramic Substances 0.000 claims abstract description 10
- 238000003723 Smelting Methods 0.000 claims abstract description 9
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 4
- 239000002699 waste material Substances 0.000 claims abstract description 4
- 238000004458 analytical method Methods 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 8
- 239000000155 melt Substances 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 229910010038 TiAl Inorganic materials 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 229910052755 nonmetal Inorganic materials 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- ZALMZWWJQXBYQA-UHFFFAOYSA-N [N].[Cl] Chemical compound [N].[Cl] ZALMZWWJQXBYQA-UHFFFAOYSA-N 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000011449 brick Substances 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 claims description 2
- 230000007547 defect Effects 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000011888 foil Substances 0.000 abstract description 15
- 230000005611 electricity Effects 0.000 abstract description 3
- 230000002542 deteriorative effect Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 238000005070 sampling Methods 0.000 abstract 1
- 239000013078 crystal Substances 0.000 description 6
- 230000033228 biological regulation Effects 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 2
- 239000011344 liquid material Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 235000006679 Mentha X verticillata Nutrition 0.000 description 1
- 235000002899 Mentha suaveolens Nutrition 0.000 description 1
- 235000001636 Mentha x rotundifolia Nutrition 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
- Continuous Casting (AREA)
- Metal Rolling (AREA)
Abstract
The present invention relates to a method and a technology for the direct casting rolling production of aluminum foil through the electrolysis of aluminum liquid. The present invention comprises the main steps: electrolyzing aluminum liquid at a high temperature, carrying out operation through a smelting furnace (or a mixing furnace), sampling analysis components, adding waste materials and master alloy, refining for a first time, guiding the furnace, adjusting the temperature to the interval of 750(+/-)5 DEG C, refining for a second time, deteriorating Al, Ti and B, realizing ceramic filtration, casting and rolling reels, rolling the reels into foil blanks in the cold manner, carrying out intermediate annealing, foil rolling and slitting, and obtaining finished products of foil materials. The method and the technology have the advantages of shortened technical flow, re-melting procedure saving, avoidance of secondary burning loss, resources of aluminum and electricity saving, and other material consumption saving. The quality of the produced foil materials is superior to or is equivalent to foil materials produced by a traditional casting rolling method.
Description
The present invention relates to aluminum processing field.Specifically a kind of method of producing aluminium foil by directly cast-rolling electrolytic aluminium liquid.
Existing method of producing foil has two kinds: a kind of is the aluminium ingot remelting---casting ingot blank---crop end------ingot blank heating---hot rolling---warm-rolling---cold rolling---intermediate annealing---paper tinsel rolls---finished product that mills face.This method complex process, investment is big, and yield rate is low, and the cost height has only large enterprises such as Dongbei Light Alloy Working Factory, The Southwest aluminum fabrication to adopt this method production at home.Another kind method is the aluminium ingot remelting---continuous casting and rolling---cold rolling---intermediate annealing---paper tinsel rolls---finished product.This method made-up belt does not need crop end, need not mill face, has improved yield rate, need not heat, hot rolling, has shortened technological process greatly, has saved ingot blank heating and equipment of hot rolling, has greatly saved investment, has reduced cost, and therefore development is very fast.The existing casting and rolling machine in the whole nation is 45 at present, and presents a rapidly rising trend.But this method production separates with electrolytic aluminium factory, can not be connected.Electrolytic aluminium factory pours into aluminium ingot with aluminium liquid, and remelting is heated with aluminium ingot again by processing factory, and then carries out casting ...This just brings a series of problems, and remelting needs power consumption, produces the secondary scaling loss, and the consumption that produces other auxiliary material with it, meaningless national aluminium, electricity and other material resources of having expended.
The objective of the invention is for shortened process, save the remelting operation, avoid the secondary scaling loss, save aluminium, electric resources and other material consumptions, a kind of method and technology of producing aluminium foil with the direct casting of electrolytic aluminium liquid is provided.
To achieve these goals, the technical scheme taked of the present invention is: this directly cast-rolling electrolytic aluminium liquid is produced aluminium foil method and technology may further comprise the steps:
1. high-temperature electrolysis aluminium liquid (more than 920 ℃) is directly delivered to smelting furnace or holding furnace
2. the transhipment of aluminium liquid finishes the mixed chemical composition of sample analysis electrolytic aluminium liquid
3. in electrolytic aluminium liquid, add waste material and intermediate alloy, melt temperature is adjusted to 700-760 ℃ of scope
4. in smelting furnace or holding furnace, adopt CCl
4Or N
2-Cl
2Carry out refining refining first time support C Cl
4: no moisture; Soak CCl
4The heating furnace of light-weight foamed brick about 350 ℃ in the heating more than 6 hours; Refining carrier N
2-Cl
2: chlorinity 15-18%, nitrogen chlorine does not have moisture, oxygen content≤2PPm in the institute in the nitrogen; Refining time 〉=8 minute
5. leave standstill in the stove importing through the melt of initial refining in smelting furnace or the holding furnace, adjust temperature to 750 ° ± 5 ℃, in leaving standstill stove, use N
2-Cl
2Carry out the refining second time, refining time 〉=10 minute
6. the aluminum melt after refining purifies adds the Al-Ti-B silk and carries out online rotten
The modification process specification requirement:
A. to the requirement of alterant
Adopt the processing of going bad of Al-Ti-B silk
Al-Ti-B silk composition requires: contain Ti 4.95-5.35%, B 0.98-1.05%, Fe≤0.2%, Si≤0.35%;
Al-Ti-B silk phase constitution requires: TiAl
3Size≤125 μ m, the relative populations of size in the 20-27.5 mu m range is many, and the relative populations in the 90-110 mu m range is few, TiAl
3Be bulk, do not allow to exist, be evenly distributed with needle-like; TiB
2Agglomerate size≤7.5 μ m, even dispersion distributes
B. modification process
It is 730 ± 5 ℃ that the Al-Ti-B silk adds fashionable melt temperature
Al-Ti-B silk addition 1.4-1.8 ‰;
7. further adopt floamed ceramics filtrating piece (double-stage filtering) to carry out purified treatment foam ceramic filter (double-stage filtering): the upstream ceramic filter is PPi40, thickness 〉=50mm; The downstream ceramic filter is PPi60, and thickness is 〉=25mm that upstream and downstream is filtered and can be abutted against together, drop 〉=10mm before and after the normal filtration, maximum unit rate of filtration Q
Mg=U
m/ F
Effectively≤ 0.062kg/cm
2, min
Wherein: F
Effectively-effective filtration area, U
m-maximum filtration speed
Handle through cleaning molten control technologys such as refining, filtrations, require:
Gas content≤0.12ml/100gAl in the melt,
Nonmetal inclusion particle in the melt is removed substantially;
8. enter the casting and rolling machine casting roll coil of strip, the casting-rolling technology condition after rotten the purification:
Casting roll gap: 6.0-7.0mm
Temperature: 690-710 ℃ of casting (preceding case)
Roll casting speed: 600-1200mm/min
Intensity of cooling: inflow temperature≤30 ℃, outlet temperature≤40 ℃
Casting roll coil of strip specification requirement: casting roll coil of strip grain size≤2 grades; Plate face flawless, is drawn ditch, small gap at no poker air flue, metal or nonmetal major defect such as be pressed into
9. roll coil of strip material is cold-rolled to 0.5-0.6mm paper tinsel woolen cloth, again through intermediate annealing
10. paper tinsel rolls---cuts---annealing---product inspection.
The aluminium foil that above-mentioned directly cast-rolling electrolytic aluminium liquid is produced aluminium foil method and technology production comprises following alloy: 1000 be, 3003,8011.
The present invention compared with prior art, its distinguishing feature and effect are:
1, traditional casting needs elder generation with the aluminium ingot remelting, consume a large amount of energy and other raw and auxiliary materials, produces the secondary scaling loss; The present invention has cancelled the remelting operation then with directly cast-rolling electrolytic aluminium liquid, has shortened technical process, has saved resources such as aluminium, electricity greatly, and the ton product can increase the wound benefit more than 800 yuan.
2, traditional casting is controlled at temperature of aluminum liquid between 700-760 ℃, surpasses this temperature range and is overheated, can cause that casting roll coil of strip crystal grain is thick, and ungulate crackle appears in the surface, and defectives such as air flue, slag inclusion be serious take place in the band plate; The present invention adopts cleaning molten control technology, microstructure control technology, casting-milling technology parameter optimisation technique, paper tinsel roll process optimisation technique etc. to eliminate the influence that melt overheat causes, can directly adopt the casting of high-temperature electrolysis aluminium liquid, the foil quality of being produced is better than or is equivalent to the foil that traditional casting and roll process is produced.
3, original casting focuses on new equipment, new technology, as in order to improve the melt cleanliness, promptly adopts equipment such as snif, ALPUr, mint to carry out refine on line; The present invention then focuses on reasonability, the validity of research technology, focuses on the control and the optimisation technique of each each method of process, does not increase on the basis of equipment to obtain optimum efficiency.
Embodiment:
On a complete set of production line that strip cold rolling mills machine that φ 650 * 1600mm standard type Hunter casting and rolling machine and 1450mmFata make, foil mill that 1625mmFata makes and other auxiliary equipment are formed, implemented a whole set of technology of the present invention.
Temperature was 930 ℃ when electrolytic aluminium liquid was come out of the stove, and was transported to 890 ℃ of smelting furnace maximum temperatures, amounted to aluminium liquid 8.27t, and all the transhipment of aluminium liquid finished 3.5 hours consuming time.The mixed chemical composition of electrolytic aluminium liquid, Fe0.12%, Si 0.05%, gas content 1.5ml/100gAl.
Add 18% waste material and intermediate alloy in electrolytic aluminium liquid, adjust temperature and chemical composition, make temperature adjust to 700-760 ℃ of scope, main chemical compositions is Fe+Si=0.48%.
Meet table 1 regulation as 1A35,1A45 alloy
| Alloy designations | Chemical composition % | ||||||||
| Fe+Si | Cu | Mn | Mg | Zn | Ti | Other | Al | ||
| Single | Add up to | ||||||||
| 1A35 | 0.65 | 0.05 | 0.05 | 0.05 | 005 | 0 03 | 0.03 | - | 99 35 |
| 1A45 | 0.50 | 0.02 | 0.05 | 0.05 | 005 | 003 | 0.03 | - | 99.45 |
Annotate: Al is a minimum in the table, and all the other elements are the highest limit.Other mean unlisted or the metallic element of regulation numerical value not.
Adopt CCl at smelting furnace in the stove respectively with leaving standstill
4And N
2-Cl
2Refining.Leaving standstill stove N
2-Cl
2After the refining, gas content is 0.10ml/100gAl.
Aluminum melt after refining purifies adds the Al-Ti-B silk and goes bad, and further adopts the twin-stage ceramic filter to carry out purified treatment simultaneously.Rotten condition is: melt temperature 725-730 ℃, and addition 1.5 ‰.Enter the casting and rolling machine casting, the casting-rolling technology condition after rotten the purification: casting roll gap 6.5mm, casting district 49mm, made-up belt width 1050mm, the oven temperature, degree is 695 ± 5 ℃ before the casting, roll casting speed 920-930mm/min, 18 ℃ of cooling water inlet temperatures, outlet temperature 27-29 ℃.Specification requirement is: casting roll coil of strip size is thick=6.0～8mm, 0＜convexity≤1%, laterally with plate poor≤0.04mm, vertically poor＜± 1%, in every meter length range＜± 0.5%, roll casting sheet two volumes, meter heavy 4.3t, 4.4t.Subsequently this two coiled strip is cold-rolled to 0.5mm---intermediate annealing (annealing back grain size 1 grade)---paper tinsel is rolled to the 0.007mm foil.
Intermediate annealing process system such as table 2 before paper tinsel rolls:
Table 2 paper tinsel rolls preceding woollen annealing schedule
| Initial furnace temperature (℃) | Constant temperature (℃) | Heating-up time (H) | Temperature retention time (H) | The secondary constant temperature (℃) | Temperature fall time (H) | Temperature retention time (H) | The type of cooling |
| 250 | 460 | 7 | 2 | 420 | 2 | 10 | Cool off 3 hours to the 250 ℃ air coolings of coming out of the stove |
Paper tinsel mill train sub-distribution (to the 0.007mm foil):
0.5-0.24-0.125-0.063-0.031-0.015-0.007
Pairing rolling pass technological parameter:
Inlet thickness: 2 * 0.015mm
Exit thickness: 2 * 0.007mm
Mill speed: 336-395m/min
Unit tension: 58.8-30.1N
Average load: 1.314MN
Oil pressure: 3.0-4.0MPa
Oil temperature: 45-60 ℃
At last, foil is cut, annealed, get foil finished product 5.47t, integrated yield reaches 62.9%.
Above-mentionedly produce aluminium foil by directly cast-rolling electrolytic aluminium liquid and comprise following alloy: 1000 be, 3003,8011.
Experimental result:
The normal casting material of directly cast-rolling electrolytic aluminium liquid material and aluminium ingot remelting is compared as follows:
1A45 casting grain size relatively
Directly cast-rolling electrolytic aluminium liquid material crystal grain is tiny and uniform equiaxed grain structure, the grain size one-level; The normal casting material of aluminium ingot remelting also is an one-level crystal grain, and both are suitable fully.
Table 3 1A45 alloy roll casting sheet mechanical property relatively
| The sample classification | Sample thickness (mm) | δb(Mpa) | δ (％) | ||||
| 90° | 45° | 0° | 90° | 45° | 0° | ||
| Directly cast-rolling electrolytic aluminium liquid 1# | 7.73 | 96.6 | 90.7 | 97.4 | 45.5 | 47.3 | 45.5 |
| Directly cast-rolling electrolytic aluminium liquid 2# | 7.66 | 95.8 | 90.6 | 96.1 | 39.0 | 45.7 | 47.1 |
| The normal casting of aluminium ingot remelting | 7.51 | 88.6 | 84.7 | 89.1 | 30.1 | 31.6 | 34.2 |
Directly cast-rolling electrolytic aluminium liquid made-up belt mechanical property all correspondingly is higher than the mechanical property of the normal roll casting sheet of aluminium ingot remelting.
Table 4 is cold-rolled to mechanical property comparison under the 0.5mm hard state
| The sample classification | Alloy | δb(Mpa) | δ (％) | ||||
| 90° | 45° | 0° | 90° | 45° | 0° | ||
| Directly cast-rolling electrolytic aluminium liquid | 1A45 | 221 | 203 | 214 | 2.43 | 3.30 | 5.00 |
| The normal casting of aluminium ingot remelting | 1A45 | 215 | 4.70 | ||||
* normal 90 °, 45 ° direction mechanical properties of casting material are not done
From 0 ° of performance test that direction is done, both are suitable substantially.
Grain structure relatively after the 1A45 alloy 0.5mm intermediate annealing
Crystal grain is tiny evenly after the intermediate annealing of directly cast-rolling electrolytic aluminium liquid sample, and one-level crystal grain is identical with crystal grain after the 0.5mm intermediate annealing of aluminium ingot remelting ordinary production.
Mechanical property relatively after the table 5 0.5mm intermediate annealing
| The sample classification | Alloy | δb(Mpa) | δ(％) | ||||
| 90° | 45° | 0° | 90° | 45° | 0° | ||
| Directly cast-rolling electrolytic aluminium liquid | 1A45 | 92.7 | 88.5 | 90.3 | 35.6 | 41.3 | 45.1 |
| The normal casting of aluminium ingot remelting | 1A45 | 93.9 | 90.5 | 40.9 | 41.6 | ||
* normal casting material is not done 45 ° of directional performances
Relatively tensile strength is suitable substantially for directly cast-rolling electrolytic aluminium liquid and aluminium ingot remelting ordinary production material, and 90 ° of directions of percentage elongation are low slightly, and 0 ° of direction is slightly high.
Table 6 is rolled to 0.007mm foil and national standard and both pin hole rates relatively
| The sample classification | Alloy | Thickness (mm) | The pin hole rate is (individual/m 3) | |||
| GB3198-996 | The in kind detection | |||||
| Top grade | Well | Qualified | ||||
| Directly cast-rolling electrolytic aluminium liquid | 1A45 | 0.0068-0.0072 | 300 | 600 | 1200 | 15-68 |
| The normal casting of aluminium ingot remelting | 1A45 | 0.0068-0.0072 | 4-60 | |||
Its pin hole rate is much better than the regulation of national standard about the top grade product, and is higher with aluminium ingot remelting ordinary production material, but meets normal fluctuation range.
Table 7 0.007mm paper tinsel annealing back mechanical property relatively
| The sample classification | Alloy | δb(Mpa) | δ(％) |
| Directly cast-rolling electrolytic aluminium liquid | 1A45 | 65.6 | 2.7 |
| The normal casting of aluminium ingot remelting | 1A45 | 66.0 | 1.5 |
Directly cast-rolling electrolytic aluminium liquid and aluminium ingot remelting ordinary production material compare, and tensile strength is suitable substantially, and percentage elongation is high slightly.
Claims (2)
1, a kind of by directly cast-rolling electrolytic aluminium liquid production high-quality aluminium foil method and technology, it is characterized in that it comprises the steps:
1. high-temperature electrolysis aluminium liquid (more than 920 ℃) is directly delivered to smelting furnace or holding furnace
2. the transhipment of aluminium liquid finishes the mixed chemical composition of sample analysis electrolytic aluminium liquid
3. in electrolytic aluminium liquid, add waste material and intermediate alloy, melt temperature is adjusted to 700-760 ℃ of scope
4. in smelting furnace or holding furnace, adopt CCl
4Or N
2-Cl
2Carry out refining refining first time support C Cl
4: no moisture; Soak CCl
4The heating furnace of light-weight foamed brick about 350 ℃ in the heating more than 6 hours; Refining carrier N
2-Cl
2: chlorinity 15-18%, nitrogen chlorine does not have moisture, oxygen content≤2PPm in the institute in the nitrogen; Refining time 〉=8 minute
5. leave standstill in the stove importing through the melt of initial refining in smelting furnace or the holding furnace, adjust temperature to 750 ° ± 5 ℃, in leaving standstill stove, use N
2-Cl
2Carry out the refining second time, refining time 〉=10 minute
6. the aluminum melt after refining purifies adds the Al-Ti-B silk and carries out online rotten
The modification process specification requirement:
A. to the requirement of alterant
Adopt the processing of going bad of Al-Ti-B silk
Al-Ti-B silk composition requires: contain Ti 4.95-5.35%, B 0.98-1.05%, Fe≤0.2%, Si≤0.35%;
Al-Ti-B silk phase constitution requires: TiAl
3Size≤125 μ m, the relative populations of size in the 20-27.5 mu m range is many, and the relative populations in the 90-110 mu m range is few, TiAl
3Be bulk, do not allow to exist, be evenly distributed with needle-like; TiB
2Agglomerate size≤7.5 μ m, even dispersion distributes
B. modification process
It is 730 ± 5 ℃ that the Al-Ti-B silk adds fashionable melt temperature
Al-Ti-B silk addition 1.4-1.8 ‰;
7. further adopt floamed ceramics filtrating piece (double-stage filtering) to carry out purified treatment foam ceramic filter (double-stage filtering): the upstream ceramic filter is PPi40, thickness 〉=50mm; The downstream ceramic filter is PPi60, and thickness is 〉=25mm that upstream and downstream is filtered and can be abutted against together, drop 〉=10mm before and after the normal filtration, maximum unit rate of filtration Q
Mg=U
m/ F
Effectively≤ 0.062kg/cm
2, min
Wherein: F
Effectively-effective filtration area, U
m-maximum filtration speed
Handle through cleaning molten control technologys such as refining, filtrations, require:
Gas content≤0.12ml/100gAl in the melt,
Nonmetal inclusion particle in the melt is removed substantially;
8. enter the casting and rolling machine casting roll coil of strip, the casting-rolling technology condition after rotten the purification:
Casting roll gap: 6.0-7.0mm
Temperature: 690-710 ℃ of casting (preceding case)
Roll casting speed: 600-1200mm/min
Intensity of cooling: inflow temperature≤30 ℃, outlet temperature≤40 ℃
Casting roll coil of strip specification requirement: casting roll coil of strip grain size≤2 grades; Plate face flawless, is drawn ditch, small gap at no poker air flue, metal or nonmetal major defect such as be pressed into
9. roll coil of strip material is cold-rolled to 0.5-0.6mm paper tinsel woolen cloth, again through intermediate annealing
10. paper tinsel rolls---cuts---annealing---product inspection.
2, directly cast-rolling electrolytic aluminium liquid production high-quality aluminium foil method according to claim 1 and technology is characterized in that the aluminium foil of producing comprises following alloy: 1000 be, 3003,8011.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98122565A CN1081098C (en) | 1998-11-20 | 1998-11-20 | Method and technique for producing aluminium foils by direct casting and rolling of electrolytic aluminium liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98122565A CN1081098C (en) | 1998-11-20 | 1998-11-20 | Method and technique for producing aluminium foils by direct casting and rolling of electrolytic aluminium liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1254624A CN1254624A (en) | 2000-05-31 |
| CN1081098C true CN1081098C (en) | 2002-03-20 |
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ID=5227806
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98122565A Expired - Fee Related CN1081098C (en) | 1998-11-20 | 1998-11-20 | Method and technique for producing aluminium foils by direct casting and rolling of electrolytic aluminium liquid |
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| CN1069431A (en) * | 1991-08-17 | 1993-03-03 | 北京科技大学 | The cold-rolling process of high pure aluminium foil for electrolytic capacitor |
| CN1134322A (en) * | 1996-03-18 | 1996-10-30 | 新疆众和股份有限公司 | High-efficiency cold-rolling production process for aluminium foil of high-voltage electrolytic condenser |
-
1998
- 1998-11-20 CN CN98122565A patent/CN1081098C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069431A (en) * | 1991-08-17 | 1993-03-03 | 北京科技大学 | The cold-rolling process of high pure aluminium foil for electrolytic capacitor |
| CN1134322A (en) * | 1996-03-18 | 1996-10-30 | 新疆众和股份有限公司 | High-efficiency cold-rolling production process for aluminium foil of high-voltage electrolytic condenser |
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