CN102284483B - Production process for rolling light gauge aluminum foil - Google Patents

Production process for rolling light gauge aluminum foil Download PDF

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Publication number
CN102284483B
CN102284483B CN2011102146678A CN201110214667A CN102284483B CN 102284483 B CN102284483 B CN 102284483B CN 2011102146678 A CN2011102146678 A CN 2011102146678A CN 201110214667 A CN201110214667 A CN 201110214667A CN 102284483 B CN102284483 B CN 102284483B
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rolling
oil
roll
passage
tensile stress
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CN102284483A (en
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杜江
王智会
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Jiangsu Zhongji Lamination Materials Co., Ltd.
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JIANGSU ZHONGJI LAMINATION MATERIALS CO Ltd
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Abstract

The invention discloses a production process for rolling a light gauge aluminum foil, which comprises the following steps of: performing rough rolling, wherein the reduction per pass of the rough rolling is 0.3mm to 0.14mm to 0.07mm to 0.038mm; performing intermediate rolling, wherein the reduction per pass of the intermediate rolling is 0.038mm to 0.013mm; performing double rolling; performing intermediate annealing; cleaning a stock, namely performing surface cleaning on the aluminum foil stock by using rolling oil at a finish rolling inlet; performing finish rolling, wherein the reduction per pass of the finish rolling is 0.013mm to 0.005mm; slitting; annealing a semi-finished product; and packaging and warehousing. By adding the intermediate annealing and rolling oil cleaning processes for the aluminum foil, the mechanical property of the aluminum foil is improved while the thickness of the aluminum foil is reduced, and the breakage condition and a pinhole number in the rolling process are reduced.

Description

A kind of rolling thickness is the production technology of the double-zero aluminum foil of 0.005mm
Technical field
The present invention relates to the field of aluminium foil production technology, especially relate to a kind of casting and prepare the production technology that thickness is the double-zero aluminum foil of 0.005mm.
Background technology
Aluminium foil is a kind of thin slice that directly rolls with metallic aluminium, uses always and does uses such as thermoprint material, capacitor, packaging material.Because the quality of aluminium is soft, ductility is good, has argenteous gloss,, also can print if the thin slice after will rolling is mounted with materials such as sodium metasilicate and on offset paper, to be processed aluminium foil.But aluminium foil itself is prone to oxidation and colour-darkening, and friction, touch etc. all can be faded, so is not suitable for the thermoprint of the Front cover of book and periodical etc. of permanent preservation.Aluminium foil can be divided into thick paper tinsel, single zero paper tinsel and two zero paper tinsel by difference in thickness.So-called two zero paper tinsel is exactly at the aluminium foil of its thickness less than 0.01mm.The raising day by day of Along with people's living standard, the fields such as food, beverage, dairy produce, medicine, daily use chemicals, electronic product that are applied in of double-zero aluminum foil are developed rapidly.
Produce the high-quality double-zero aluminum foil, need possess following primary condition: the ROLLING OIL of the aluminium foil blank of high-quality, the roll that accurately grinds, advanced aluminium foil mill, high-quality, suitable rolling mill practice and skilled manipulation hand.And reducing of aluminum foil thickness can make size, shape and the distribution of the compound in the aluminium foil very big influence of pinhole number generation to aluminium foil, thereby the elongation of infringement aluminium foil, makes its mechanical property variation.Therefore need to improve the technology of rolling aluminium foil,, improve the mechanical property of aluminium foil, reduce pinhole number, improve the quality of aluminium foil reducing aluminum foil thickness simultaneously.
Summary of the invention
The objective of the invention is for a kind of thickness is provided is the rolling mill practice of the double-zero aluminum foil of 0.005mm, and this technology makes the aluminum foil thickness of acquisition littler, and does not influence the mechanical property and the quality of aluminium foil.
Processing step of the present invention is: roughing, aluminium base coiled material is dropped into roughing mill, and lubricated with ROLLING OIL, the passage of depressing of roughing is 0.3mm → 0.14mm → 0.07mm → 0.038mm; In roll, roll during the aluminium foil stock after the roughing is carried out, lubricated with ROLLING OIL, passage is 0.038mm → 0.013mm under the middle roll compacting; Pairing is rolling, and two roll-leaf material are overlapping, with pairing oil spray, closes volume through coiling machine; Intermediate annealing, aluminium foil stock are carried out high annealing one time after going out coiling machine; The woollen cleaning, the aluminium foil stock of before finish rolling, with ROLLING OIL annealing having been accomplished carries out surface clean; Finish rolling, the woolen cloth with pairing after rolling drops into finishing mill, and lubricated with ROLLING OIL, the passage of depressing of finish rolling is 0.013mm → 0.005mm; Cut, the aluminium foil that makes is tailored into the aluminium foil of design width through cutting machine; Semi-finished product annealing, the aluminium foil semi-finished product after cutting carry out final annealing through electrical heating; The packing warehouse-in.
The present invention adopts the AA1235H14 alloy as raw material, and the proportioning of its chemical composition can effectively reduce the pinhole number of processing aluminium foil, improves its mechanical property.Adopt the intermediate annealing technology can eliminate stiffization of part of aluminium foil simultaneously; Recover its plasticity and reduce resistance of deformation; When carrying out follow-up finish rolling process, can not rupture, and owing to passed through intermediate annealing, aluminium foil crystal grain and intergranule are difficult for rupturing because aluminium foil is crisp too firmly; Reduced the pin hole that intercrystalline cracking causes, a spot of pin hole also can significantly reduce in the follow-up operation of rolling.The present invention also utilizes ROLLING OIL aluminium foil stock to be cleaned before the finish rolling carrying out, and makes roll and aluminium foil surface formation one deck lubricating film, effectively reduces coefficient of friction; Improve roll-force; The aluminum foil thickness that shuts out is thinner, and the surface smoothness and the uniformity are better, has improved the quality of aluminium foil greatly.
Description of drawings
Fig. 1 is the rolling double-zero aluminum foil process chart of the present invention.
The specific embodiment
Embodiment:
The first step, roughing drops into roughing mill with aluminium base coiled material; Lubricated with ROLLING OIL, the passage of depressing of roughing is 0.3mm → 0.14mm → 0.07mm → 0.038mm m, and percentage pass reduction is followed successively by 53%, 51%, 55.8%; Control parameters: first passage; 800-1000m/min, draught pressure are 1100-1500kN, and preceding tensile stress is 30N/mm 2, back tensile stress is 25-45N/mm 2, the oil temperature is 30-40 ℃, oil pressure is 5.5-6.0Pa; Second passage, 1100-1200m/min, draught pressure are 1300-1700kN, preceding tensile stress is 30N/mm 2, back tensile stress is 25-45/mm 2, oily gentle oil pressure remains unchanged, and the 3rd passage, mill speed are 1300-1400m/min, and draught pressure is 1300-1700kN, and preceding tensile stress is 35N/mm 2, back tensile stress is 40-50N/mm 2, oily temperature oil pressure remains unchanged.
Second the step, in roll, roll during the aluminium foil stock after the roughing is carried out; Lubricated with ROLLING OIL, passage is 0.038mm → 0.013mm under the middle roll compacting, and percentage pass reduction is 55%; Controlled rolling speed is 1500-1600m/min, and draught pressure is 2300-2700kN, and preceding tensile stress is 45N/mm 2, back tensile stress is 50-55N/mm 2, oily temperature remains on 30 ℃, and oil pressure is 5.5-6.0Pa.
In the 3rd step, pairing is rolling, and two roll-leaf material are overlapping, with pairing oil spray, closes volume through coiling machine.
The 4th step, intermediate annealing, in roll to expect behind the coiling machine and in stove, be warming up to 165 ℃-185 ℃ annealing 4 hours through 3 hours, be cooled to 100 ℃ through 2 hours then, come out of the stove.
In the 5th step, the woollen cleaning carried out surface clean, formation one deck lubricating film with the ROLLING OIL aluminium foil stock of accomplishing of will anneal.
In the 6th step, finish rolling drops into finishing mill with the woolen cloth that has cleaned; Lubricated with ROLLING OIL, the passage of depressing of finish rolling is 0.013mm → 0.005mm, and percentage pass reduction is followed successively by 51.8%; Mill speed is 550-750m/min, and draught pressure 2600-3000kN, preceding tensile stress are 40N/mm 2, back tensile stress is 50-55N/mm 2, oily temperature rise is to 50-55 ℃, and oil pressure is controlled at 5.5-6.0Pa.
The 6th step, to cut, the aluminium foil that makes is tailored into the aluminium foil goods of design width through cutting machine.
The 7th step, semi-finished product annealing, the annealing temperature of electrical heating to 200 ℃ be incubated 2 hours, then is cooled to 180 ℃, be incubated 4 hours, afterwards cools off and comes out of the stove.
The 8th step, packing, finished product warehouse-in.
Aluminium foil product through the foregoing description acquisition: productive rate is 86.82%, and thickness is 0.005mm-0.0045mm, and hot strength is 60-90MPa, percentage elongation>1.5%, pinhole number is ignored.

Claims (4)

1. the production technology that rolling thickness is the double-zero aluminum foil of 0.005mm is characterized in that, comprising: roughing; Aluminium base coiled material is dropped into roughing mill, and lubricated with ROLLING OIL, the passage of depressing of roughing is 0.3mm → 0.14mm → 0.07mm → 0.038mm; Control parameters: first passage; 800-1000m/min, draught pressure are 1100-1500kN, and preceding tensile stress is 30N/mm 2, back tensile stress is 25-45N/mm 2, the oil temperature is 30-40 ℃, oil pressure is 5.5-6.0Pa; Second passage, 1100-1200m/min, draught pressure are 1300-1700kN, preceding tensile stress is 30N/mm 2, back tensile stress is 25-45/mm 2, oily gentle oil pressure remains unchanged, and the 3rd passage, mill speed are 1300-1400m/min, and draught pressure is 1300-1700kN, and preceding tensile stress is 35N/mm 2, back tensile stress is 40-50N/mm 2, oily temperature oil pressure remains unchanged;
In roll, roll during the aluminium foil stock after the roughing is carried out, lubricated with ROLLING OIL, passage is 0.038mm → 0.013mm under the middle roll compacting, controlled rolling speed is 1500-1600m/min, draught pressure is 2300-2700kN, preceding tensile stress is 45N/mm 2, back tensile stress is 50-55N/mm 2, oily temperature remains on 30 ℃, and oil pressure is 5.5-6.0Pa;
Pairing is rolling, and two roll-leaf material are overlapping, with pairing oil spray, closes volume through coiling machine;
Intermediate annealing, aluminium foil stock are once annealed after going out coiling machine, intermediate annealing, in roll to expect behind the coiling machine and in stove, be warming up to 165 ℃-185 ℃ annealing 4 hours through 3 hours, be cooled to 100 ℃ through 2 hours then, come out of the stove;
The woollen cleaning after the woollen completion annealing, cleaned its surface with ROLLING OIL earlier before getting into finishing mill;
Finish rolling drops into finishing mill with the woolen cloth after cleaning, and lubricated with ROLLING OIL, the passage of depressing of finish rolling is 0.013mm → 0.005mm, and mill speed is 550-750m/min, and draught pressure 2600-3000kN, preceding tensile stress are 40N/mm 2, back tensile stress is 50-55N/mm 2, oily temperature rise is to 50-55 ℃, and oil pressure is controlled at 5.5-6.0Pa;
Cut, the aluminium foil that makes is tailored into the aluminium foil goods of design width through cutting machine;
Semi-finished product annealing, the aluminium foil semi-finished product after cutting carry out final annealing through electrical heating, and the semi-finished product annealing process is to be warming up to 200 ℃, is incubated 2 hours, is cooled to 180 ℃ then, is incubated 4 hours;
The packing warehouse-in.
2. rolling thickness according to claim 1 is the production technology of the double-zero aluminum foil of 0.005mm; It is characterized in that; The aluminium base coiled material that adopts is the AA1235H14 alloy; Specification is 0.3mm * 1060mm * Cmm, hydrogen content≤1.4ml/kg, crystallite dimension=0.03-0.05mm; Alloy composition is (mass fraction): Si 0.10-0.15%, Fe 0.40-0.45%, Cu 0.003%, Mn 0.003%, Mg 0.003%, Zn 0.02%, Ti 0.1-0.016%, V 0.008-0.014%, Al surplus, other single impurity are no more than 0.01% of gross mass in the composition.
3. rolling thickness according to claim 2 is the production technology of the double-zero aluminum foil of 0.005mm, it is characterized in that, ROLLING OIL consist of homemade MR921+WYROL10+WYROL12; Its quality proportioning is that during the 1-3 passage, base oil is 92.1%; WYROL10 is 7%, and WYROL12 is 0.9%; During the 4-5 passage, base oil is 94.2%, and WYROL10 is 3.8%, and WYROL12 is 2%; The roughing mill filtering accuracy is 0.005-0.006mm, and ROLLING OIL viscosity is 2.044mm/s; The finishing mill filtering accuracy is 0.003mm, and ROLLING OIL viscosity is 1.948mm/s.
4. be the production technology of the double-zero aluminum foil of 0.005mm according to the said rolling thickness of claim 1; It is characterized in that; The working roll Cr of breaking-down roll is 0.09mm, and Ra is 0.26-0.28 μ m, and backing roll Cr is 0mm; Ra is 0.4-0.6 μ m, and depressing passage is 0.3mm → 0.14mm → 0.07mm → 0.038mm; In the working roll Cr of roll be 0.075mm, Ra is 0.07-0.12 μ m, backing roll Cr is 0mm, Ra is 0.4-0.6 μ m, depressing passage is 0.038mm → 0.013mm; The working roll Cr of finishing roll is 0.09mm, and Ra is 0.03-0.04 μ m, and backing roll Cr is 0mm, and Ra is 0.4-0.6 μ m, and depressing passage is 0.013mm → 0.005mm.
CN2011102146678A 2011-07-29 2011-07-29 Production process for rolling light gauge aluminum foil Active CN102284483B (en)

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CN102553921A (en) * 2012-01-18 2012-07-11 山东鲁丰铝箔股份有限公司 Method for preparing household container foil
CN102716908B (en) * 2012-07-04 2014-02-26 北京科技大学 Forming method of high-flexibility ultrathin rolled copper foil
CN102899531B (en) * 2012-09-03 2014-07-30 浙江中金铝业有限公司 Double zero aluminum foil with thickness of 0.004-0.0048 mm, and preparation method thereof
CN102921730B (en) * 2012-11-13 2015-05-13 镇江鼎胜铝业股份有限公司 Manufacturing method of single-face glazed aluminum alloy foil for drug use
CN103071982B (en) * 2013-01-31 2015-04-29 西南铝业(集团)有限责任公司 Aluminum coil processing technique
CN103464479A (en) * 2013-09-05 2013-12-25 江苏中基复合材料有限公司 Aluminium foil rolling technology
CN103736730B (en) * 2013-12-04 2015-03-25 曹帅 Near-solidus rolling method of foil-shaped liquid metal
CN103695723B (en) * 2013-12-13 2016-06-08 华西铝业有限责任公司 A kind of 8021 alloy double-zero aluminum foil and production technique thereof
CN104858233B (en) * 2015-06-08 2016-11-30 江苏丰源铝业有限公司 A kind of double-zero aluminum foil thickness difference rolling
ITUA20162815A1 (en) * 2016-04-22 2017-10-22 Guasta Fabrizio Process for rolling aluminum sheets and aluminum sheets obtained with said process
CN106238459B (en) * 2016-09-08 2018-09-28 江苏大亚铝业有限公司 The food packaging aluminum foil rolling technique of high-peeling strength
CN106521372B (en) * 2016-11-23 2018-05-04 洛阳万基铝加工有限公司 A kind of finished product annealing process of double-zero aluminum foil
CN106903165B (en) * 2017-02-21 2019-03-22 遵义恒佳铝业有限公司 The processing technology of double-zero aluminum foil
CN106825040B (en) * 2017-03-27 2019-02-22 江苏大亚铝业有限公司 The method of 1850mm breadth mill milling double-zero aluminum foil
CN108160738A (en) * 2017-12-22 2018-06-15 江苏鼎胜新能源材料股份有限公司 A kind of preparation method of high-elongation medicinal aluminum foil
CN108273848B (en) * 2018-01-30 2018-11-27 北京信达盛包装材料有限公司 A kind of double dark face aluminium foils and preparation method thereof
CN108213080A (en) * 2018-03-01 2018-06-29 昆山铝业有限公司 A kind of aluminum foil rolling technique
CN110000209B (en) * 2019-03-11 2020-08-04 江苏鼎胜新能源材料股份有限公司 4-pass rolling method for aluminum foil with thickness of 0.005mm
CN111455224B (en) * 2020-04-13 2022-03-18 江苏中基复合材料有限公司 Process for producing single-zero aluminum foil from 8150 alloy
CN111957743A (en) * 2020-07-23 2020-11-20 陇西西北铝铝箔有限公司 Preparation method of low-pinhole ultra-wide ultrathin aluminum foil
CN111957744A (en) * 2020-07-27 2020-11-20 上海神火铝箔有限公司 Rolling method of ultra-wide and ultra-thin aluminum foil
CN111922080A (en) * 2020-08-10 2020-11-13 上海神火铝箔有限公司 Method for improving aluminum foil yield based on multiple times of lap rolling
CN112387782A (en) * 2020-10-29 2021-02-23 厦门厦顺铝箔有限公司 Production method of aluminum foil for high-adhesion lithium ion battery

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004298938A (en) * 2003-03-31 2004-10-28 Kobe Steel Ltd Aluminum sheet and aluminum foil and method for manufacturing them
JP2005271024A (en) * 2004-03-24 2005-10-06 Showa Denko Kk Aluminum foil and its manufacturing method
CN1837399A (en) * 2006-04-18 2006-09-27 云南新美铝铝箔有限公司 Thermal processing method in production process of super-thin aluminium foil by cast-rolling stock
CN101168168A (en) * 2007-11-30 2008-04-30 大亚科技股份有限公司 Double zero aluminium foil heavy reduction rate rolling technique
JP2009084658A (en) * 2007-10-02 2009-04-23 Nippon Light Metal Co Ltd Aluminum alloy foil for electrolytic capacitor
CN101797584A (en) * 2010-02-11 2010-08-11 山东南山铝业股份有限公司 Four-pass aluminum foil rolling process

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004298938A (en) * 2003-03-31 2004-10-28 Kobe Steel Ltd Aluminum sheet and aluminum foil and method for manufacturing them
JP2005271024A (en) * 2004-03-24 2005-10-06 Showa Denko Kk Aluminum foil and its manufacturing method
CN1837399A (en) * 2006-04-18 2006-09-27 云南新美铝铝箔有限公司 Thermal processing method in production process of super-thin aluminium foil by cast-rolling stock
JP2009084658A (en) * 2007-10-02 2009-04-23 Nippon Light Metal Co Ltd Aluminum alloy foil for electrolytic capacitor
CN101168168A (en) * 2007-11-30 2008-04-30 大亚科技股份有限公司 Double zero aluminium foil heavy reduction rate rolling technique
CN101797584A (en) * 2010-02-11 2010-08-11 山东南山铝业股份有限公司 Four-pass aluminum foil rolling process

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
刘煜.0.0065mm铝箔轧制的工艺研究.《铝加工》.2002,(第06期), *
晋五良.1235和8079两种合金生产双零铝箔的分析.《中国金属通报》.2010,(第45期), *

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