CN102719771B - Thermal treatment process of aluminum foil stock - Google Patents
Thermal treatment process of aluminum foil stock Download PDFInfo
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- CN102719771B CN102719771B CN2012102409305A CN201210240930A CN102719771B CN 102719771 B CN102719771 B CN 102719771B CN 2012102409305 A CN2012102409305 A CN 2012102409305A CN 201210240930 A CN201210240930 A CN 201210240930A CN 102719771 B CN102719771 B CN 102719771B
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Abstract
A thermal treatment process of aluminum foil stock comprises the steps of: carrying out high-temperature homogenizing annealing when an original plate blank is rolled into be 2.0-4.0mm in thickness, wherein the high-temperature homogenizing annealing is realized by three steps: adopting segmented time annealing under the condition being 540-560 DEG C, rolling continuously after the high-temperature homogenizing annealing according to annealing time with different specifications; carrying out intermediate annealing by one time when the aluminum foil stock is rolled to be 0.50-0.70mm in thickness, carrying out annealing treatment by five steps, and determining the temperature time according to specification requirements of a product. The pinhole degree of the aluminum foil produced by using the process disclosed by the invention is smaller than 300/m<2>; the rate of finished products is greater than or equal to 90%; the strength of 0.006mm aluminum foil is 70-90MP, and the surface quality and the metallic luster are uniform.
Description
Technical field
The present invention relates to a kind of thermal treatment process of aluminum foil stock, especially produce the paper tinsel base heat treating method of ultra-thin aluminum foil (thickness is less than the 0.0065mm aluminium foil).
Background technology
The various fields such as that aluminium foil is widely used in is electric, packing, building, and apply range along with the development in epoch and also strengthen, quality product is also had higher requirement.At present industrialized production is maximum be minimum thickness at 0.0055 ~ 0.006 aluminium foil, and the thickness and the raising yield rate that further reduce aluminium foil are the trend of current aluminium foil industry development.
Usually by adopting melt continuous casting and rolling plate to form (CC material) or the fluid origin ingot casting of semicontinuous casting form (DC material) through hot rolling and cold rolling the thickness of aluminum foil stock usually about 0.20 ~ 0.5mm through cold rolling.The production of common this blank only through once to eliminate work hardening and internal stress, material plasticity is recovered and temperature higher than the process annealing of recrystallization temperature.The aluminum foil stock that right present this production method is produced also extensively exists structural constituent inhomogeneous, the defects such as component segregation cause the aluminium foil rate that manufactures a finished product low :≤85%, and surface quality is poor, a large amount of pin hole etc. occurs, can't meet the production of high-quality ultra-thin aluminum foil.Have for the ultra-thin aluminum foil of producing great surface quality, low pin hole rate provides that resistance to deformation is low, work hardening rate is low, the blank of the few segregation of homogeneous microstructure, explore once the new heat treating regime of cover and also more show important.
Summary of the invention
The purpose of this invention is to provide a kind of aluminum foil stock thermal treatment process, reduce/eliminate aluminium foil base material produces when rolling resistance to deformation, reduce work hardening rate, reduce segregation, increase homogeneity of structure, for producing high-quality ultra-thin aluminum foil, provide high-quality paper tinsel base.
The technical solution used in the present invention is: original slab is rolled down to 2.0 ~ 4.0mm adopts a kind of high temperature homogenizing annealing system when thick.Material volume initial temperature does not limit, and can directly advance furnace annealing after cold rolling cogging, and its high temperature homogenizing annealing was divided into for 3 steps to carry out, and the relative parameters setting such as the annealing temperature in high-temperature annealing furnace, time are:
1) 540 ~ 560 ℃ * 1 h, the open amount of circulation time blower fan are 100% unlatching, and the blower fan open amount of purge step is 80%, and negative pressure switch is opened.
2) 540 ~ 560 ℃ * 6 h, the open amount of blower fan when circulation and purge all is set to 80% unlatching, opens simultaneously negative pressure switch.
3) 540 ~ 560 ℃ * H h, circulation time blower fan open amount is 80%, during purge, the open amount of blower fan is set to 40%, and closes negative pressure switch; The setting of time H arranges according to the following rules:
When the blank specification is (2.0 ~ 4.0) * (860 ~ 1200) mm,
H=13h; When the blank specification is (2.0 ~ 4.0) * (1201 ~ 1500) mm,
H=15h; When the blank specification is (2.0 ~ 4.0) * (1501 ~ 1700) mm,
H=18h; Blank specification width during greater than 1700mm, is pressed the 1700mm width specifications and is carried out.
Continue rolling after high temperature homogenizing annealing, when foil blank is rolling to 0.50 ~ 0.70mm, then through a process annealing, its anneal divided for 5 steps carried out, and various processing parameters are as follows:
1) 450 ~ 470 ℃ * 1 h, the open amount of circulation time blower fan are 100% unlatching, and the blower fan open amount of purge step is 80%, and negative pressure switch is opened.
2) 450 ~ 470 ℃ * 7 h, the blower fan open amount when circulation time and purge all is set to 80%, negative pressure switch is opened, if the incoming band oil mass is large, this step and previous step during with purge the open amount of blower fan be set as 100%.
3) 450 ~ 470 ℃ *
HH, the open amount of circulation time blower fan are 80% unlatching, and the blower fan open amount of purge step is 40%, and negative pressure switch is closed.Time
HSetting and delivery specification arrange according to the following rules to arrange according to the specification of supplied materials:
When the blank specification is (0.5 ~ 0.7) * 830 ~ 1170mm, every stove during annealing: 3 ~ 4 material volumes,
HBe set to 5h; 2 ~ 3 material volumes
H=4.5h; If the blank specification is between (0.5 ~ 0.7) * 1171 ~ 1470mm,
HSetting require be: if 3 ~ 4 material volumes of every stove,
H=6h; 2 ~ 3 material volumes,
H=5.5h; When the blank specification is (0.5 ~ 0.7) * 1471 ~ 1700mm,
HBe set as 3 ~ 4 material volumes of every stove,
H=7h, 2 ~ 3 material volumes,
H=6.5h, 1 material volume
HThe requirement of=6h arranges.
4) 350 ~ 370 ℃ * 0.5 h, the blower fan open amount of circulation and purge step all is set to 80%, and negative pressure switch is closed.
5) 350 ~ 370 ℃ * 2 h, circulation time blower fan open amount is set to 80%, and the blower fan open amount of purge step is set to 40%, and negative pressure switch is closed.
The deviation of heat treatment time is set to ± and 10 minutes; The deviation of blower fan open amount is in ± 15%.
The aluminium foil that the present invention can composition be even in order to produce, surface quality is good, the pin hole rate is low provides high-quality paper tinsel base, and mode is simple and easy to do.Reach the Foil pinhole degree produced≤300/m2; Yield rate 〉=90%; 0.006mm aluminium foil intensity is 70 ~ 90MP; Surface quality metalluster homogeneous.
Embodiment
Embodiment 1 aluminum foil stock is 1 foil blank volume that is rolling to 3.0 * 1700mm; High temperature annealing, its anneal system is: 550 ℃ * 1h (blower fan open amount: circulation 100%, purge 80%), 550 ℃ * 6h (blower fan open amounts: circulation 80%, purge 80%), 550 ℃ * 18h (blower fan open amount: circulation 80%, purge 40%); Rolling again after high temperature annealing, through be rolling to 0.60mm when thick again process annealing process, its anneal system is: 460 ℃ * 1h (blower fan open amount: circulation 100%, purge 80%), 460 ℃ * 7h (blower fan open amounts: circulation 80%, purge 80%), 460 ℃ * 6h (blower fan open amount: circulation 100%, purge 40%), 360 ℃ * 0.5h (blower fan open amounts: circulation 80%, purge 80%), 360 ℃ * 2h (blower fan open amount: circulation 80%, purge 40%); Follow-up rolling; The finished product aluminium foil.
Embodiment 2 aluminum foil stocks are 4 and are rolling to 4.0 * 1200mm foil blank volume; High temperature annealing, its anneal system is: 550 ℃ * 1h (blower fan open amount: circulation 100%, purge 80%), 550 ℃ * 6h (blower fan open amounts: circulation 80%, purge 80%), 550 ℃ * 18h (blower fan open amount: circulation 80%, purge 40%); Rolling again after high temperature annealing, through be rolling to 0.60mm when thick again process annealing process, its anneal system is: 460 ℃ * 1h (blower fan open amount: circulation 100%, purge 80%), 460 ℃ * 7h (blower fan open amounts: circulation 80%, purge 80%), 460 ℃ * 7h (blower fan open amount: circulation 100%, purge 50%), 360 ℃ * 0.5h (blower fan open amounts: circulation 90%, purge 90%), 360 ℃ * 2h (blower fan open amount: circulation 90%, purge 50%); Follow-up rolling; The finished product aluminium foil.
Claims (1)
1. the thermal treatment process of an aluminum foil stock is characterized in that: original slab is rolled down to 2.0 ~ 4.0mm adopts high temperature homogenizing annealing, high temperature homogenizing annealing to be divided into for 3 steps when thick, detailed process and processing parameter are:
1) 540 ~ 560 ℃ * 1 h, the open amount of circulation time blower fan are 100% unlatching, and the blower fan open amount of purge step is 80%, and negative pressure switch is opened;
2) 540 ~ 560 ℃ * 6 h, the open amount of blower fan when circulation and purge all is set to 80% unlatching, opens simultaneously negative pressure switch;
3) 540 ~ 560 ℃ * 13 ~ 15 h, circulation time blower fan open amount is 80%, during purge, the open amount of blower fan is set to 40%, and closes negative pressure switch;
Continue rolling after high temperature homogenizing annealing, when foil blank is rolling to 0.50 ~ 0.70mm, then through a process annealing, its anneal divided for 5 steps carried out, and various processing parameters are as follows:
A 450 ~ 470 ℃ * 1 h, the open amount of circulation time blower fan are 100% unlatching, and the blower fan open amount of purge step is 80%, and negative pressure switch is opened;
B 450 ~ 470 ℃ * 7 h, the blower fan open amount when circulation time and purge all is set to 80%, negative pressure switch is opened, if the incoming band oil mass is large, this step and previous step during with purge the open amount of blower fan be 100%;
C 450 ~ 470 ℃ * 5 ~ 7 h, the open amount of circulation time blower fan are 80% unlatching, and the blower fan open amount of purge step is 40%, and negative pressure switch is closed;
D 350 ~ 370 ℃ * 0.5 h, the blower fan open amount of circulation and purge step all is set to 80%, and negative pressure switch is closed;
E 350 ~ 370 ℃ * 2 h, circulation time blower fan open amount is set to 80%, and the blower fan open amount of purge step is 40%, and negative pressure switch is closed;
The deviation of heat treatment time is set to ± and 10 minutes; The deviation of blower fan open amount is by ± 15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102409305A CN102719771B (en) | 2012-07-12 | 2012-07-12 | Thermal treatment process of aluminum foil stock |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102409305A CN102719771B (en) | 2012-07-12 | 2012-07-12 | Thermal treatment process of aluminum foil stock |
Publications (2)
| Publication Number | Publication Date |
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| CN102719771A CN102719771A (en) | 2012-10-10 |
| CN102719771B true CN102719771B (en) | 2013-11-13 |
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| CN2012102409305A Expired - Fee Related CN102719771B (en) | 2012-07-12 | 2012-07-12 | Thermal treatment process of aluminum foil stock |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451581B (en) * | 2013-09-26 | 2016-05-04 | 中南大学 | A kind of aging thermal treating process of 3003 aluminium alloy electronics paper tinsels |
| CN104087879B (en) * | 2014-07-07 | 2016-09-14 | 银邦金属复合材料股份有限公司 | A kind of annealing process of aluminum alloy coiled materials |
| CN110484785B (en) * | 2019-09-23 | 2022-01-07 | 中南大学 | Preparation process of aluminum foil for high-performance power battery |
| CN110760767B (en) * | 2019-10-31 | 2020-08-14 | 重庆中铝华西铝业有限公司 | Annealing and oil removing method for large-width double-sided polished aluminum foil |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101066576A (en) * | 2007-04-30 | 2007-11-07 | 中铝瑞闽铝板带有限公司 | Aluminium foil base material producing process |
| JP2008081811A (en) * | 2006-09-28 | 2008-04-10 | Mitsubishi Alum Co Ltd | Method for producing aluminum foil for electrolytic capacitor |
| CN101985130A (en) * | 2010-11-16 | 2011-03-16 | 苏州有色金属研究院有限公司 | Method for casting and rolling 1235-alloy aluminum foil blank |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008081811A (en) * | 2006-09-28 | 2008-04-10 | Mitsubishi Alum Co Ltd | Method for producing aluminum foil for electrolytic capacitor |
| CN101066576A (en) * | 2007-04-30 | 2007-11-07 | 中铝瑞闽铝板带有限公司 | Aluminium foil base material producing process |
| CN101985130A (en) * | 2010-11-16 | 2011-03-16 | 苏州有色金属研究院有限公司 | Method for casting and rolling 1235-alloy aluminum foil blank |
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