CN115652115A - Production process of high-elongation 1100 alloy battery aluminum foil - Google Patents
Production process of high-elongation 1100 alloy battery aluminum foil Download PDFInfo
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- CN115652115A CN115652115A CN202211353423.2A CN202211353423A CN115652115A CN 115652115 A CN115652115 A CN 115652115A CN 202211353423 A CN202211353423 A CN 202211353423A CN 115652115 A CN115652115 A CN 115652115A
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 82
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 239000011888 foil Substances 0.000 title claims abstract description 65
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 36
- 239000000956 alloy Substances 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000007670 refining Methods 0.000 claims abstract description 31
- 239000011449 brick Substances 0.000 claims abstract description 20
- 238000003723 Smelting Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000000155 melt Substances 0.000 claims abstract description 16
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 238000005507 spraying Methods 0.000 claims abstract description 7
- 229910052786 argon Inorganic materials 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 239000011343 solid material Substances 0.000 claims abstract description 4
- 238000005096 rolling process Methods 0.000 claims description 20
- 239000007789 gas Substances 0.000 claims description 13
- 238000005266 casting Methods 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 10
- 239000002893 slag Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 238000000137 annealing Methods 0.000 claims description 4
- 230000002708 enhancing effect Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000001953 recrystallisation Methods 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 238000004904 shortening Methods 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052708 sodium Inorganic materials 0.000 abstract description 4
- 239000011734 sodium Substances 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract description 3
- 238000002791 soaking Methods 0.000 abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 229910052710 silicon Inorganic materials 0.000 abstract description 2
- 239000010703 silicon Substances 0.000 abstract description 2
- 108090000312 Calcium Channels Proteins 0.000 abstract 1
- 102000003922 Calcium Channels Human genes 0.000 abstract 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 238000005097 cold rolling Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910001610 cryolite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides a production process of an aluminum foil of a 1100 alloy battery with high elongation, which comprises the following specific preparation steps: the method comprises the following steps: smelting an aluminum foil blank: uniformly placing the smelted solid materials at the bottom of the furnace, and adding electrolytic aluminum liquid from furnace doors at two sides respectively; step two: purifying an aluminum foil blank, adopting CCI (calcium channel-containing) soaked bricks to refine a melt, taking out refined bricks and slagging off when brick blocks do not have bubbles in the melt in the refining time, scattering a Na-free covering agent to protect the melt, and transferring the melt into a standing furnace to perform treatment again after the components are qualified; when the smelting body is cast and rolled, the CCI soaking bricks are adopted for melt refining, the air bricks in the furnace are adopted in the standing furnace, the continuous treatment mode is combined with the refining process of argon-loaded powder spraying outside the furnace, and the impurities of sodium, iron and silicon in the smelting body can be effectively removed, so that the deformation resistance of the smelting body is effectively reduced, the elongation rate of the smelting body is improved, and the performance of an aluminum foil material is improved.
Description
Technical Field
The invention belongs to the technical field of aluminum foil production, and relates to a production process of an aluminum foil of a 1100 alloy battery with high elongation.
Background
Automobile power batteries used by new energy automobiles mainly comprise lithium iron phosphate batteries and lithium ion batteries. The aluminum foil for the battery is mainly used as a current collector in the batteries, and is usually used as a positive electrode current collector and a composite film of the battery, so that the aluminum foil is required to have higher strength and good elongation, and the currently disclosed production process of the aluminum foil for the common lithium battery is prepared by adopting the following steps: heating and smelting aluminum foil for a lithium battery into an aluminum alloy melt according to a certain alloy component ratio, and continuously casting and rolling the aluminum alloy melt subjected to the procedures of slagging-off, grain refinement, gas and slag removal, filtration and the like by a casting and rolling machine to form a blank; the blank is subjected to cold rolling, recrystallization annealing, then cold rolling and finishing to obtain a blank for lithium battery aluminum foil; and (3) rough rolling, finish rolling and slitting the blank by using a roller mill to obtain a finished aluminum foil product for the lithium battery.
However, when the aluminum foil disc blank produced in the above way is smelted, the multi-process impurity removal treatment is not carried out, in the electrolytic process, due to the use of production materials such as alumina, cryolite, sodium fluoride, calcium fluoride, carbon anodes and the like, a certain content of alkali metal sodium, calcium, electrolyte and oxidized slag inclusion exists in electrolytic aluminum liquid, when the sodium content in the electrolytic aluminum liquid reaches 0.05% -0.11%, defects such as slab crack bubbles, slag inclusion, coarse grains and the like are easily caused, the oxidized slag inclusion can influence the mechanical property and the pinhole degree of the foil, and meanwhile, the comprehensive mechanical property indexes such as tensile strength, elongation and the like are low (the tensile strength is 230MPa, the elongation does not exceed 3%), the battery yield is low due to low elongation in later-stage processing, the production cost is increased, the production requirements are difficult to meet, and improvement is needed.
Disclosure of Invention
The invention aims to provide a production process of an aluminum foil of a 1100 alloy battery with high elongation to solve the problems in the background technology.
The purpose of the invention can be realized by the following technical scheme:
a production process of an aluminum foil of a 1100 alloy battery with high elongation rate comprises the following specific preparation steps:
the method comprises the following steps: smelting an aluminum foil blank: uniformly placing the smelted solid materials at the furnace bottom, adding electrolytic aluminum liquid from furnace doors at two sides respectively, simultaneously enhancing stirring, shortening the melting time of the fixed material, and controlling the smelting time to be 4-6h;
step two: and (3) purifying the aluminum foil blank: after the materials are mixed in the smelting furnace, when the temperature of a melt reaches about 750 ℃, the CCI is adopted to soak the bricks for melt refining, the refining time is that the bricks have no bubbles in the melt, the refined bricks are taken out, the slag is removed, na-free covering agents are scattered for melt protection, and the materials are transferred into a standing furnace for treatment again after being qualified;
step three: after the treatment in the standing furnace is finished, rolling the solidified aluminum plate by a casting roller in a rotating manner, crushing crystal grains to obtain an aluminum foil blank, and then carrying out a blank rolling process;
step four: rolling the aluminum foil blank: the specific pass distribution is as follows: the first pass is pressed from 8.0mm to 6.0mm, the second pass is pressed from 6.0mm to 4.8mm, the third pass is pressed from 4.8mm to 2.8mm, the fourth pass is pressed from 2.8mm to 1.1mm, the fifth pass is pressed from 1.1mm to 0.5mm, the sixth pass is pressed from 0.5mm to 0.38mm, the seventh pass is pressed from 0.38mm to 0.2mm, heat treatment is carried out during the second pass, the temperature of furnace gas is controlled to be 550-560 ℃, when the temperature of materials reaches 530-540 ℃, the temperature of the furnace gas is adjusted to be 535 ℃, heat preservation is carried out for 3-5 hours at the temperature, and the materials are discharged after being cooled for 2 hours along with the furnace;
in the production process of the 1100 alloy battery aluminum foil with high elongation, in the first step, electromagnetic stirring is adopted in a stirring mode, and in order to obtain a casting and rolling blank with uniform structure and fine grains, a refiner is added into an aluminum melt before casting and rolling for grain refinement.
In the production process of the 1100 alloy battery aluminum foil with high elongation, the refiner is AI-Ti-B wires, and the specific adding operation is as follows, the wire feeder is added in the reverse flow direction, the adding temperature is 730-740 ℃, and the content of added Ti is 0.01-0.02%.
In the above production process of the aluminum foil for the 1100 alloy battery with high elongation, in the second step, the operation of performing the treatment again in the standing furnace is as follows:
and the refining mode of the aluminum melt in the standing furnace adopts the air brick in the furnace and combines the refining process of argon powder injection loaded outside the furnace, when in refining operation, the refining operation needs to be sufficient and completely without dead angles, the powder injection refining temperature is 735 ℃, the refining time is 15min, slag is removed after refining, and the melt is protected by a Na-free covering agent.
In the production process of the 1100 alloy battery aluminum foil with high elongation, the aluminum foil blank in the step one meets the national standard of 1100 alloy, the thickness is 0.25-0.30mm, the hardness is H18, the tensile strength is more than 185N/mm < 2 >, and the elongation is more than or equal to 3.0%.
In the above production process of the aluminum foil for the high-elongation 1100 alloy battery, in the first step, the aluminum foil blank comprises the following alloy components: al-more than or equal to 99%, fe-0.21%, si-0.12%, cu-0.11%, zn-0.015%.
In the production process of the aluminum foil for the 1100 alloy battery with high elongation, the aluminum foil blank in the first step is cold-rolled for 3 times after recrystallization annealing.
In the production process of the 1100 alloy battery aluminum foil with high elongation, after the standing furnace treatment is carried out in the second step, the furnace body on-line purification treatment can also be carried out, and the specific treatment steps are as follows:
and (3) rotationally spraying a person into the molten aluminum by utilizing the two high-purity Ar gas graphite rotors through the two graphite rotors to purify the melt and control the working flow of Ar gas: 1.5-2.5m/h, working pressure 0.2MPa, and rotor speed 300rpm.
Compared with the prior art, the production process of the high-elongation 1100 alloy battery aluminum foil has the advantages that:
1. adding a refiner into the smelted body to carry out grain refinement treatment, further enhancing the uniformity of the mixed structure of the refiner by adopting an electromagnetic stirring mode, adding in a reverse flow direction, controlling the adding temperature to be 730-740 ℃, controlling the content of Ti to be 0.01-0.02%, and improving the structure and the uniformity of performance of an aluminum foil blank during subsequent rolling so as to obtain the aluminum foil with better extensibility and strength.
2. When a smelting body is cast and rolled, CCI soaking bricks are adopted for melt refining, furnace ventilating bricks are adopted inside a standing furnace, the continuous treatment mode is combined with a furnace external argon-loaded powder spraying refining process, and the impurities of sodium, iron and silicon in the smelting body can be effectively removed, so that the deformation resistance of the smelting body is effectively reduced, the elongation of the smelting body is improved, and the performance of an aluminum foil material is improved.
Detailed Description
The following are specific examples of the present invention and further illustrate the technical solution of the present invention, but the present invention is not limited to these examples.
A production process of an aluminum foil of a 1100 alloy battery with high elongation rate comprises the following specific preparation steps:
the method comprises the following steps: smelting an aluminum foil blank: uniformly placing the smelted solid materials at the furnace bottom, adding electrolytic aluminum liquid from furnace doors at two sides respectively, simultaneously enhancing stirring, shortening the melting time of the fixed material, and controlling the smelting time to be 4-6h;
step two: purifying the aluminum foil blank: after the materials are mixed in the smelting furnace, when the temperature of a melt reaches about 750 ℃, soaking the brick in CCI for melt refining, taking out the brick when no bubbles appear in the melt during the refining, removing the refined brick, slagging off, scattering a Na-free covering agent for melt protection, and transferring the molten brick into a standing furnace for treatment again after the components are qualified;
step three: after the treatment in the standing furnace is finished, rolling the solidified aluminum plate by a casting roller in a rotating manner, crushing crystal grains to obtain an aluminum foil blank, and then carrying out a blank rolling process;
step four: rolling the aluminum foil blank: the specific pass distribution is as follows: the first pass is pressed from 8.0mm to 6.0mm, the second pass is pressed from 6.0mm to 4.8mm, the third pass is pressed from 4.8mm to 2.8mm, the fourth pass is pressed from 2.8mm to 1.1mm, the fifth pass is pressed from 1.1mm to 0.5mm, the sixth pass is pressed from 0.5mm to 0.38mm, the seventh pass is pressed from 0.38mm to 0.2mm, heat treatment is carried out during the second pass, the temperature of furnace gas is controlled to be 550-560 ℃, when the temperature of materials reaches 530-540 ℃, the temperature of the furnace gas is adjusted to be 535 ℃, heat preservation is carried out for 3-5 hours at the temperature, and the materials are discharged after being cooled for 2 hours along with the furnace;
the invention relates to a production process of an aluminum foil of a high-elongation 1100 alloy battery, which comprises the following steps that in the first step, electromagnetic stirring is adopted in a stirring mode, and in order to obtain a casting and rolling blank with uniform structure and fine grains, a refiner is added into an aluminum melt before casting and rolling for grain refinement.
The invention relates to a production process of an aluminum foil of an alloy battery with high elongation rate 1100, wherein a refiner is AI-Ti-B wires, and the specific adding operation is as follows, wire feeding machines are used for adding, reverse liquid flow direction adding is adopted, the adding temperature is 730-740 ℃, and the adding amount Ti content is 0.01% -0.02%.
The invention relates to a production process of an aluminum foil of a high-elongation 1100 alloy battery, which comprises the following steps of in step two, carrying out treatment again in a standing furnace:
and the refining mode of the aluminum melt in the standing furnace adopts the air brick in the furnace and combines the refining process of argon powder injection loaded outside the furnace, when in refining operation, the refining operation needs to be sufficient and completely without dead angles, the powder injection refining temperature is 735 ℃, the refining time is 15min, slag is removed after refining, and the melt is protected by a Na-free covering agent.
The invention relates to a production process of an aluminum foil of a high-elongation 1100 alloy battery, wherein in the step one, the aluminum foil blank conforms to the national standard of 1100 alloy, the thickness is 0.25-0.30mm, the hardness is H18, the tensile strength is more than 185N/mm < 2 >, and the elongation is more than or equal to 3.0%.
The invention relates to a production process of an aluminum foil of a high-elongation 1100 alloy battery, wherein in the first step, the aluminum foil blank comprises the following alloy components: al-more than or equal to 99%, fe-0.21%, si-0.12%, cu-0.11%, zn-0.015%.
The invention relates to a production process of an aluminum foil of a high-elongation 1100 alloy battery, which is characterized in that an aluminum foil blank in the step one is formed by cold rolling for 3 times after recrystallization annealing.
The invention relates to a production process of an aluminum foil of a high-elongation 1100 alloy battery, which comprises the following specific treatment steps of:
and (3) rotationally spraying a person into the molten aluminum by utilizing the two high-purity Ar gas graphite rotors through the two graphite rotors to purify the melt, and controlling the working flow of Ar gas: 1.5-2.5m/h, working pressure 0.2MPa, and rotor speed 300rpm.
Those not described in detail in this specification are well within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (8)
1. The production process of the high-elongation 1100 alloy battery aluminum foil is characterized by comprising the following specific preparation steps:
the method comprises the following steps: smelting an aluminum foil blank: uniformly placing the smelted solid materials at the furnace bottom, adding electrolytic aluminum liquid from furnace doors at two sides respectively, simultaneously enhancing stirring, shortening the melting time of the fixed material, and controlling the smelting time to be 4-6h;
step two: and (3) purifying the aluminum foil blank: after the materials are mixed in the smelting furnace, when the temperature of a melt reaches about 750 ℃, the CCI is adopted to soak the bricks for melt refining, the refining time is that the bricks have no bubbles in the melt, the refined bricks are taken out, the slag is removed, na-free covering agents are scattered for melt protection, and the materials are transferred into a standing furnace for treatment again after being qualified;
step three: after the treatment in the standing furnace is finished, rolling the solidified aluminum plate by a casting roller in a rotating manner, crushing crystal grains to obtain an aluminum foil blank, and then carrying out a blank rolling process;
step four: rolling the aluminum foil blank: the specific pass distribution is as follows: the first pass is pressed from 8.0mm to 6.0mm, the second pass is pressed from 6.0mm to 4.8mm, the third pass is pressed from 4.8mm to 2.8mm, the fourth pass is pressed from 2.8mm to 1.1mm, the fifth pass is pressed from 1.1mm to 0.5mm, the sixth pass is pressed from 0.5mm to 0.38mm, the seventh pass is pressed from 0.38mm to 0.2mm, heat treatment is carried out during the second pass, the temperature of furnace gas is controlled to be 550-560 ℃, the temperature of the furnace gas is adjusted to 535 ℃ when the temperature of materials reaches 530-540 ℃, heat preservation is carried out for 3-5 hours at the temperature, and the materials are discharged from the furnace after being cooled for 2 hours along with the furnace.
2. The process for producing the aluminum foil of the 1100 alloy battery with high elongation percentage as claimed in claim 1, wherein in the first step, the stirring mode adopts electromagnetic stirring, and in order to obtain a casting and rolling blank with uniform structure and fine grains, a refiner is added into the aluminum melt before casting and rolling for grain refinement.
3. The production process of the high-elongation 1100 alloy battery aluminum foil as claimed in claim 2, wherein the refiner is AI-Ti-B filaments, and is added by a wire feeder in a reverse flow direction at a temperature of 730-740 ℃ with the Ti content of 0.01-0.02%.
4. The process for producing high elongation 1100 alloy battery aluminum foil according to claim 1, wherein in the second step, the operation of performing the treatment again in the standing furnace is as follows:
and the refining mode of the aluminum melt in the standing furnace adopts the air brick in the furnace, combines the argon-loaded powder spraying refining process outside the furnace, fully and thoroughly has no dead angle during refining operation, the powder spraying refining temperature is 735 ℃, the refining time is 15min, and slag is removed after refining and the melt is protected by a Na-free covering agent.
5. The process for producing the aluminum foil for the high-elongation 1100 alloy battery as claimed in claim 1, wherein in the first step, the aluminum foil blank meets the 1100 alloy national standard, the thickness is 0.25-0.30mm, the hardness is H18, the tensile strength is more than 185N/mm < 2 >, and the elongation is more than or equal to 3.0%.
6. The process for producing the aluminum foil for the high-elongation 1100 alloy battery as claimed in claim 1, wherein the aluminum foil blank in the first step comprises the following alloy components: al-more than or equal to 99%, fe-0.21%, si-0.12%, cu-0.11%, zn-0.015%.
7. The process of claim 1, wherein the aluminum foil stock in the first step is cold-rolled for 3 passes after recrystallization annealing.
8. The process for producing the aluminum foil of the 1100 alloy battery with high elongation percentage according to the claim 1, wherein in the second step, after the standing furnace treatment, the furnace body on-line purification treatment can be carried out, and the specific treatment steps are as follows:
and (3) rotationally spraying a person into the molten aluminum by utilizing the two high-purity Ar gas graphite rotors through the two graphite rotors to purify the melt and control the working flow of Ar gas: 1.5-2.5m/h, working pressure 0.2MPa, and rotor speed 300rpm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115323223A (en) * | 2022-07-27 | 2022-11-11 | 甘肃东兴铝业有限公司 | Processing method for preparing foil blank of 1235 aluminum alloy new energy battery |
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