CN117701953A - Aluminum alloy material and method for preparing double-zero aluminum foil by using same - Google Patents
Aluminum alloy material and method for preparing double-zero aluminum foil by using same Download PDFInfo
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- CN117701953A CN117701953A CN202311811504.7A CN202311811504A CN117701953A CN 117701953 A CN117701953 A CN 117701953A CN 202311811504 A CN202311811504 A CN 202311811504A CN 117701953 A CN117701953 A CN 117701953A
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 136
- 239000011888 foil Substances 0.000 title claims abstract description 134
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 133
- 238000000034 method Methods 0.000 title claims abstract description 38
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 34
- 239000000956 alloy Substances 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 claims abstract description 11
- 238000000137 annealing Methods 0.000 claims description 63
- 238000005096 rolling process Methods 0.000 claims description 41
- 238000001816 cooling Methods 0.000 claims description 27
- 238000005097 cold rolling Methods 0.000 claims description 21
- 238000007670 refining Methods 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 16
- 238000003723 Smelting Methods 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 14
- 239000010687 lubricating oil Substances 0.000 claims description 8
- 238000005098 hot rolling Methods 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 239000002199 base oil Substances 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- 239000010731 rolling oil Substances 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 239000012298 atmosphere Substances 0.000 claims description 2
- 239000001307 helium Substances 0.000 claims description 2
- 229910052734 helium Inorganic materials 0.000 claims description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 2
- 229910052754 neon Inorganic materials 0.000 claims description 2
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 description 15
- 230000009471 action Effects 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/40—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling foils which present special problems, e.g. because of thinness
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/386—Plates
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- 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
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- Chemical & Material Sciences (AREA)
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- Mechanical Engineering (AREA)
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- Crystallography & Structural Chemistry (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses an aluminum alloy material and a preparation method of double-zero aluminum foil thereof. The double-zero aluminum foil prepared by the method has good tensile strength and fewer pinholes.
Description
Technical Field
The invention relates to the technical field of alloy materials, in particular to an aluminum alloy material and a method for preparing double-zero aluminum foil by using the same.
Background
Aluminum foil in the current market is mainly produced by rolling, and complicated technological processes such as batching, smelting, refining, casting, homogenization treatment, hot rolling, cold rolling, foil rolling, finished product annealing and the like are needed. In particular, the manufacturing of the ultrathin aluminum foil needs to be subjected to multiple finish rolling, so that the production cost is high, and the yield is low. At present, the aluminum foil produced by using a rolling method basically stays at the stage of 0.006 mm thickness, the requirement of continuous thinning on equipment is further improved, but the problem of low qualification rate of the aluminum foil is not solved, such as over-high pinhole rate, unqualified strength and the like.
Disclosure of Invention
The invention aims to provide an aluminum alloy material and a method for preparing double-zero aluminum foil by using the aluminum alloy material, so as to solve the problems in the background technology.
According to a first aspect of the present invention, there is provided an aluminum alloy material comprising, in weight percent: fe: 1.2-1.7%, si: 0.05-0.13%, cu: 0.05-0.10%, mn: 0.05-0.10%, ti: 0.05-0.10%, cr: 0.05-0.10%, zn: 0.02-0.05%, sn: 0.06-0.12%, the rest being Al;
the invention also provides a preparation method for preparing the double-zero aluminum foil from the aluminum alloy material, which comprises the following preparation steps:
(1) The aluminum alloy is prepared from the following components in percentage by weight: 1.2-1.7%, si: 0.05-0.13%, cu: 0.05-0.10%, mn: 0.05-0.10%, ti: 0.05-0.10%, cr: 0.05-0.10%, zn: 0.04-0.10% of Al, and smelting, refining, hot rolling and annealing the raw materials to prepare a first hot rolled blank with the thickness of 2 mm;
(2) The aluminum alloy is prepared from the following components in percentage by weight: 1.2-1.7%, si: 0.05-0.13%, cu: 0.05-0.10%, mn: 0.05-0.10%, ti: 0.05-0.10%, cr: 0.05-0.10%, sn: 0.12-0.24%, and the balance of Al, smelting, refining, hot rolling and annealing the raw materials to prepare a second hot rolled blank with the thickness of 3 mm;
(3) Double overlapping rolling is carried out on the first hot rolled blank and the second hot rolled blank, and annealing is carried out for 1-2 hours at the temperature of 350-360 ℃ to obtain a third hot rolled blank with the thickness of 4 mm;
(4) Cold rolling the third hot-rolled blank to obtain a cold-rolled blank with the thickness of 0.3 mm;
(5) Performing intermediate annealing on the cold-rolled blank for 1-2 hours at the temperature of 350-270 ℃ to obtain an aluminum foil blank, and equally dividing the aluminum foil blank into two parts, wherein one part is marked as a first aluminum foil blank, and the other part is marked as a second aluminum foil blank;
(6) Carrying out primary finish rolling on the first aluminum foil blank to obtain a first aluminum foil blank with the thickness of 0.5 mm; after the primary annealing and cooling, performing two-pass finish rolling to obtain a first aluminum foil blank with the thickness of 0.045 mm; performing multi-pass cold rolling after the second annealing cooling to obtain a first aluminum foil blank with the thickness of 0.005mm, and controlling the roughness Ra of the first aluminum foil blank with the thickness of 0.005mm to be 1-2 mu m;
(7) Carrying out primary finish rolling on the second aluminum foil blank to obtain a second aluminum foil blank with the thickness of 0.5 mm; after the primary annealing and cooling, performing two-pass finish rolling to obtain a second aluminum foil blank with the thickness of 0.045 mm; performing multi-pass cold rolling after the second annealing cooling to obtain a second aluminum foil blank with the thickness of 0.005mm, and controlling the roughness Ra of the second aluminum foil blank with the thickness of 0.005mm to be 0.2-0.5 mu m;
(8) Overlapping a first aluminum foil blank with the thickness of 0.005mm and a second aluminum foil blank with the thickness of 0.005mm, and entering between rollers for double rolling to obtain a double-zero aluminum foil blank with the thickness of 0.004 mm;
(9) And (5) annealing the double-zero aluminum foil blank, and cooling to obtain the double-zero aluminum foil.
According to the method, on one hand, a first hot-rolled blank containing Zn elements and a second hot-rolled blank containing Sn elements are used for combined rolling in the process of double-zero aluminum foil, then cold-rolled into a blank through cold rolling, because the atomic radius of the Zn elements is larger, partial aggregation can be formed in the first hot-rolled blank after the first hot-rolled blank is formed, aluminum alloy lattices are distorted, so that the strength of partial sites of the first hot-rolled blank is improved, when the first hot-rolled blank and the second hot-rolled blank containing Sn elements are combined-rolled, the second hot-rolled blank contains Sn elements, so that the melting temperature of the second hot-rolled blank can be reduced, the first hot-rolled blank and the second hot-rolled blank can be embedded into the second hot-rolled blank in the combined rolling process, defects can be mutually compensated, the number of pinholes can be reduced, grains can be further refined in the cold rolling process, and the strength of a finished double-zero aluminum foil is improved;
on the other hand, when the first aluminum foil blank with the thickness of 0.005mm and the second aluminum foil blank with the thickness of 0.005mm are rolled together, the surfaces of the first aluminum foil blank and the second aluminum foil blank are wound when being rolled together by controlling the difference of roughness Ra between the two, so that the strength of a product can be further improved after the product is formed, and pinholes on the surface of the product are reduced.
Detailed Description
According to a first aspect of the present invention, there is provided an aluminum alloy material comprising, in weight percent: fe: 1.2-1.7%, si: 0.05-0.13%, cu: 0.05-0.10%, mn: 0.05-0.10%, ti: 0.05-0.10%, cr: 0.05-0.10%, zn: 0.02-0.0.5%, sn: 0.06-0.12%, and the balance of Al.
The invention also provides a preparation method for preparing the double-zero aluminum foil from the aluminum alloy material, which comprises the following preparation steps:
(1) The aluminum alloy is prepared from the following components in percentage by weight: 1.2-1.7%, si: 0.05-0.13%, cu: 0.05-0.10%, mn: 0.05-0.10%, ti: 0.05-0.10%, cr: 0.05-0.10%, zn: 0.04-0.10% of Al, and smelting, refining, hot rolling and annealing the raw materials to prepare a first hot rolled blank with the thickness of 2 mm;
(2) The aluminum alloy is prepared from the following components in percentage by weight: 1.2-1.7%, si: 0.05-0.13%, cu: 0.05-0.10%, mn: 0.05-0.10%, ti: 0.05-0.10%, cr: 0.05-0.10%, sn: 0.12-0.24%, and the balance of Al, smelting, refining, hot rolling and annealing the raw materials to prepare a second hot rolled blank with the thickness of 3 mm;
(3) Double overlapping rolling is carried out on the first hot rolled blank and the second hot rolled blank, and annealing is carried out for 1-2 hours at the temperature of 350-360 ℃ to obtain a third hot rolled blank with the thickness of 4 mm;
(4) Cold rolling the third hot-rolled blank to obtain a cold-rolled blank with the thickness of 0.3 mm;
(5) Performing intermediate annealing on the cold-rolled blank for 1-2 hours at the temperature of 350-270 ℃ to obtain an aluminum foil blank, and equally dividing the aluminum foil blank into two parts, wherein one part is marked as a first aluminum foil blank, and the other part is marked as a second aluminum foil blank;
(6) Carrying out primary finish rolling on the first aluminum foil blank to obtain a first aluminum foil blank with the thickness of 0.5 mm; after the primary annealing and cooling, performing two-pass finish rolling to obtain a first aluminum foil blank with the thickness of 0.045 mm; performing multi-pass cold rolling after the second annealing cooling to obtain a first aluminum foil blank with the thickness of 0.005mm, and controlling the roughness Ra of the first aluminum foil blank with the thickness of 0.005mm to be 1-2 mu m;
(7) Carrying out primary finish rolling on the second aluminum foil blank to obtain a second aluminum foil blank with the thickness of 0.5 mm; after the primary annealing and cooling, performing two-pass finish rolling to obtain a second aluminum foil blank with the thickness of 0.045 mm; performing multi-pass cold rolling after the second annealing cooling to obtain a second aluminum foil blank with the thickness of 0.005mm, and controlling the roughness Ra of the second aluminum foil blank with the thickness of 0.005mm to be 0.2-0.5 mu m;
(8) Overlapping a first aluminum foil blank with the thickness of 0.005mm and a second aluminum foil blank with the thickness of 0.005mm, and entering between rollers for double rolling to obtain a double-zero aluminum foil blank with the thickness of 0.004 mm;
(9) And (5) annealing the double-zero aluminum foil blank, and cooling to obtain the double-zero aluminum foil.
Preferably, the specific smelting step in the step (1) and the step (2) is to perform high-temperature smelting for 2-6 hours in an inert gas atmosphere at the temperature of 720-750 ℃, wherein the inert gas is at least one of nitrogen, helium, argon and neon.
Preferably, the specific refining steps in the step (1) and the step (2) are adding a refining agent accounting for 0.3-0.5wt% of the total weight of the raw materials, and carrying out slag skimming after refining for 1-2 hours at the temperature of 730-740 ℃.
Preferably, the annealing process conditions in the step (1) and the step (2) are that the annealing is performed for 1-2 hours under the condition that the temperature is 350-360 ℃.
Preferably, the rolling oil used in the cold rolling in the step (4) is formed by mixing 92-93 wt% of MR921 base oil, 5-6 wt% of WYROL10 lubricating oil and 1-3 wt% of WYROL12 lubricating oil.
Preferably, the specific method of double lap rolling in the step (3) is to heat the first hot rolled blank to 650 ℃, and then heat the second hot rolled blank to 500 ℃ to perform lap rolling.
Preferably, the first annealing process conditions in the step (6) and the step (7) are that the temperature is 350-370 ℃ for 2-3 hours, and the second annealing process conditions are that the temperature is 360-375 ℃ for 1-2 hours.
Preferably, the annealing process in the step (9) is performed at a temperature of 360-375 ℃ for 1-2 hours.
Preferably, the difference DeltaRa between the roughness Ra of the first aluminum foil blank with the thickness of 0.005mm obtained in the step (6) and the roughness Ra of the second aluminum foil blank with the thickness of 0.005mm obtained in the step (7) is more than or equal to 0.6 mu m.
Example 1
An aluminum alloy material comprises the following components in percentage by weight: fe:1.3%, si:0.08%, cu:0.07%, mn:0.07%, ti:0.06%, cr:0.06%, zn:0.05%, sn:0.10% and the remainder Al.
The preparation method for preparing the double-zero aluminum foil from the aluminum alloy material comprises the following preparation steps:
(1) The aluminum alloy is prepared from the following components in percentage by weight: 1.3%, si:0.08%, cu:0.07%, mn:0.07%, ti:0.06%, cr:0.06%, zn:0.10 percent of Al and the balance of Al, mixing the raw materials in a nitrogen atmosphere, smelting at a high temperature of 730 ℃ for 3 hours, adding a refining agent HNJK-J103 with the weight accounting for 0.4 percent of the total weight of the refined and raw materials, refining at the temperature of 730 ℃ for 1 hour, skimming slag, and annealing at the temperature of 360 ℃ for 1 hour to prepare a first hot rolled blank with the thickness of 2 mm;
(2) The aluminum alloy is prepared from the following components in percentage by weight: 1.3%, si:0.08%, cu:0.07%, mn:0.07%, ti:0.06%, cr:0.06%, sn:0.20 percent of Al and the balance of Al, mixing the raw materials in a nitrogen atmosphere, smelting at a high temperature of 730 ℃ for 3 hours, adding a refining agent HNJK-J103 with the weight accounting for 0.4 percent of the total weight of the refined and raw materials, refining at the temperature of 730 ℃ for 1 hour, skimming slag, and annealing at the temperature of 360 ℃ for 1 hour to prepare a second hot rolled blank with the thickness of 3 mm;
(3) Double overlapping rolling is carried out on the first hot rolled blank and the second hot rolled blank, and the first hot rolled blank and the second hot rolled blank are retracted for 1h at the temperature of 350 ℃ to obtain a third hot rolled blank with the thickness of 4 mm;
(4) Cold rolling the third hot-rolled blank to obtain a cold-rolled blank with the thickness of 0.3 mm;
(5) Performing intermediate annealing on the cold-rolled blank for 1h at the temperature of 360 ℃ to obtain an aluminum foil blank, and equally dividing the aluminum foil blank into two parts, wherein one part is marked as a first aluminum foil blank, and the other part is marked as a second aluminum foil blank;
(6) Carrying out primary finish rolling on the first aluminum foil blank to obtain a first aluminum foil blank with the thickness of 0.5 mm; after the primary annealing and cooling, performing two-pass finish rolling to obtain a first aluminum foil blank with the thickness of 0.045 mm; performing multi-pass cold rolling after the second annealing cooling to obtain a first aluminum foil blank with the thickness of 0.005mm, and controlling the roughness Ra of the first aluminum foil blank with the thickness of 0.005mm to be 1.5 mu m;
(7) Carrying out primary finish rolling on the second aluminum foil blank to obtain a second aluminum foil blank with the thickness of 0.5 mm; after the primary annealing and cooling, performing two-pass finish rolling to obtain a second aluminum foil blank with the thickness of 0.045 mm; cooling for multiple times after the second annealing and cooling to obtain a second aluminum foil blank with the thickness of 0.005mm, and controlling the roughness Ra of the second aluminum foil blank with the thickness of 0.005mm to be 0.3 mu m;
(8) Overlapping a first aluminum foil blank with the thickness of 0.005mm and a second aluminum foil blank with the thickness of 0.005mm, and entering between rollers for double rolling to obtain a double-zero aluminum foil blank with the thickness of 0.004 mm;
(9) And (3) annealing the double-zero aluminum foil blank for 1.5 hours at the temperature of 365 ℃ and cooling to obtain the double-zero aluminum foil.
Preferably, the rolling oil used in the cold rolling in the step (4) is composed of 92wt% of MR921 base oil, 6wt% of WYROL10 lubricating oil and 2wt% of WYROL12 lubricating oil.
Preferably, the specific method of double lap rolling in the step (3) is to heat the first hot rolled blank to 650 ℃, and then heat the second hot rolled blank to 500 ℃ to perform lap rolling.
Preferably, the first annealing process conditions in step (6) and step (7) are annealing at a temperature of 360 ℃ for 2 hours, and the second annealing process conditions are annealing at a temperature of 365 ℃ for 1 hour.
Example 2
Example 2 differs from example 1 in that the roughness Ra of the 0.005mm thick first aluminum foil blank obtained in step (6) is 1 μm.
The rest of the procedure is the same as in example 1.
Example 3
Example 3 differs from example 1 in that the roughness Ra of the 0.005mm thick first aluminum foil blank obtained in step (6) is 2 μm.
The rest of the procedure is the same as in example 1.
Example 4
Example 4 differs from example 1 in that the roughness Ra of the 0.005mm thick second aluminum foil blank obtained in step (7) is 0.2 μm.
The rest of the procedure is the same as in example 1.
Example 5
Example 5 differs from example 1 in that the roughness Ra of the 0.005mm thick second aluminum foil blank obtained in step (7) is 0.5 μm.
The rest of the procedure is the same as in example 1.
Example 6
Example 6 differs from example in that the roughness Ra of the 0.005mm thick first aluminum foil blank obtained in step (6) is 1.0 μm and the roughness Ra of the 0.005mm thick second aluminum foil blank obtained in step (7) is 0.5 μm.
The rest of the procedure is the same as in example 1.
Comparative example 1
Comparative example 1 differs from example 1 in that the roughness Ra of the 0.005mm thick first aluminum foil blank obtained in step (6) was 2.1 μm.
The rest of the procedure is the same as in example 1.
Comparative example 2
Comparative example 2 differs from example 1 in that the roughness Ra of the 0.005mm thick first aluminum foil blank obtained in step (6) was 0.9 μm.
The rest of the procedure is the same as in example 1.
Comparative example 3
Comparative example 3 differs from example 1 in that the roughness Ra of the 0.005mm thick second aluminum foil blank obtained in step (7) was 0.1 μm.
The rest of the procedure is the same as in example 1.
Comparative example 4
Comparative example 4 differs from example 1 in that the roughness Ra of the 0.005mm thick second aluminum foil blank obtained in step (7) was 0.6 μm.
The rest of the procedure is the same as in example 1.
Comparative example 5
Comparative example 5 is different from example 1 in that the thickness of the first hot rolled stock obtained in step (1) is 3mm and the thickness of the second hot rolled stock obtained in step (2) is 2mm.
The rest of the procedure is the same as in example 1.
Comparative example 6
An aluminum alloy material comprises the following components in percentage by weight: fe:1.3%, si:0.08%, cu:0.07%, mn:0.07%, ti:0.06%, cr:0.06%, zn:0.05%, sn:0.10% and the remainder Al.
The preparation method for preparing the double-zero aluminum foil from the aluminum alloy material comprises the following preparation steps:
(1) The aluminum alloy is prepared from the following components in percentage by weight: 1.3%, si:0.08%, cu:0.07%, mn:0.07%, ti:0.06%, cr:0.06%, zn:0.05%, sn:0.10 percent of Al and the balance of Al, mixing the raw materials in a nitrogen atmosphere, smelting at a high temperature of 730 ℃ for 3 hours, adding a refining agent HNJK-J103 with the weight accounting for 0.4 percent of the total weight of the refined and raw materials, refining at the temperature of 730 ℃ for 1 hour, skimming slag, and annealing at the temperature of 360 ℃ for 1 hour to prepare a hot rolled blank with the thickness of 4 mm;
(2) Cold rolling the hot-rolled blank to obtain a cold-rolled blank with the thickness of 0.3 mm;
(3) Performing intermediate annealing on the cold-rolled blank for 1h at the temperature of 360 ℃ to obtain an aluminum foil blank, and equally dividing the aluminum foil blank into two parts, wherein one part is marked as a first aluminum foil blank, and the other part is marked as a second aluminum foil blank;
(4) Carrying out primary finish rolling on the first aluminum foil blank to obtain a first aluminum foil blank with the thickness of 0.5 mm; after the primary annealing and cooling, performing two-pass finish rolling to obtain a first aluminum foil blank with the thickness of 0.045 mm; performing multi-pass cold rolling after the second annealing cooling to obtain a first aluminum foil blank with the thickness of 0.005mm, and controlling the roughness Ra of the first aluminum foil blank with the thickness of 0.005mm to be 1.5 mu m;
(5) Carrying out primary finish rolling on the second aluminum foil blank to obtain a second aluminum foil blank with the thickness of 0.5 mm; after the primary annealing and cooling, performing two-pass finish rolling to obtain a second aluminum foil blank with the thickness of 0.045 mm; cooling for multiple times after the second annealing and cooling to obtain a second aluminum foil blank with the thickness of 0.005mm, and controlling the roughness Ra of the second aluminum foil blank with the thickness of 0.005mm to be 0.3 mu m;
(6) Overlapping a first aluminum foil blank with the thickness of 0.005mm and a second aluminum foil blank with the thickness of 0.005mm, and entering between rollers for double rolling to obtain a double-zero aluminum foil blank with the thickness of 0.004 mm;
(7) And (3) annealing the double-zero aluminum foil blank for 1.5 hours at the temperature of 365 ℃ and cooling to obtain the double-zero aluminum foil.
Preferably, the rolling oil used in the cold rolling in the step (2) is composed of 92wt% of MR921 base oil, 6wt% of WYROL10 lubricating oil and 2wt% of WYROL12 lubricating oil.
Preferably, the first annealing process conditions in step (4) and step (5) are annealing at a temperature of 360 ℃ for 2 hours, and the second annealing process conditions are annealing at a temperature of 365 ℃ for 1 hour.
Test case
(1) Tensile Strength and pinhole count test
The double zero aluminum foils obtained in examples 1 to 6 and comparative examples 1 to 6 were tested for pinhole count and tensile strength according to GB/T3198.
Table 1 test results of tensile strength and pinhole count of double zero aluminum foils of examples 1 to 6 and comparative examples 1 to 6
From comparison of experimental data of example 1 and comparative example 6, it was found that the hot rolled billets containing different elements were rolled together before cold rolling in preparing double zero aluminum foil to improve the performance of the product while reducing the number of pinholes, and from comparison of experimental data of example 1 and comparative example 5, it was found that the performance of the prepared product was better when the second hot rolled billet containing Sn element was thicker than the first hot rolled billet containing Zn element.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The aluminum alloy material is characterized by comprising the following components in percentage by weight: fe: 1.2-1.7%, si: 0.05-0.13%, cu: 0.05-0.10%, mn: 0.05-0.10%, ti: 0.05-0.10%, cr: 0.05-0.10%, zn: 0.02-0.0.5%, sn: 0.06-0.12%, the rest being Al;
the preparation method of the double-zero aluminum foil prepared from the aluminum alloy material comprises the following preparation steps:
(1) The aluminum alloy is prepared from the following components in percentage by weight: 1.2-1.7%, si: 0.05-0.13%, cu: 0.05-0.10%, mn: 0.05-0.10%, ti: 0.05-0.10%, cr: 0.05-0.10%, zn: 0.04-0.10% of Al, and smelting, refining, hot rolling and annealing the raw materials to prepare a first hot rolled blank with the thickness of 2 mm;
(2) The aluminum alloy is prepared from the following components in percentage by weight: 1.2-1.7%, si: 0.05-0.13%, cu: 0.05-0.10%, mn: 0.05-0.10%, ti: 0.05-0.10%, cr: 0.05-0.10%, sn: 0.12-0.24%, and the balance of Al, smelting, refining, hot rolling and annealing the raw materials to prepare a second hot rolled blank with the thickness of 3 mm;
(3) Double overlapping rolling is carried out on the first hot rolled blank and the second hot rolled blank, and annealing is carried out for 1-2 hours at the temperature of 350-360 ℃ to obtain a third hot rolled blank with the thickness of 4 mm;
(4) Cold rolling the third hot-rolled blank to obtain a cold-rolled blank with the thickness of 0.3 mm;
(5) Performing intermediate annealing on the cold-rolled blank for 1-2 hours at the temperature of 350-270 ℃ to obtain an aluminum foil blank, and equally dividing the aluminum foil blank into two parts, wherein one part is marked as a first aluminum foil blank, and the other part is marked as a second aluminum foil blank;
(6) Carrying out primary finish rolling on the first aluminum foil blank to obtain a first aluminum foil blank with the thickness of 0.5 mm; after the primary annealing and cooling, performing two-pass finish rolling to obtain a first aluminum foil blank with the thickness of 0.045 mm; performing multi-pass cold rolling after the second annealing cooling to obtain a first aluminum foil blank with the thickness of 0.005mm, and controlling the roughness Ra of the first aluminum foil blank with the thickness of 0.005mm to be 1-2 mu m;
(7) Carrying out primary finish rolling on the second aluminum foil blank to obtain a second aluminum foil blank with the thickness of 0.5 mm; after the primary annealing and cooling, performing two-pass finish rolling to obtain a second aluminum foil blank with the thickness of 0.045 mm; performing multi-pass cold rolling after the second annealing cooling to obtain a second aluminum foil blank with the thickness of 0.005mm, and controlling the roughness Ra of the second aluminum foil blank with the thickness of 0.005mm to be 0.2-0.5 mu m;
(8) Overlapping a first aluminum foil blank with the thickness of 0.005mm and a second aluminum foil blank with the thickness of 0.005mm, and entering between rollers for double rolling to obtain a double-zero aluminum foil blank with the thickness of 0.004 mm;
(9) And (5) annealing the double-zero aluminum foil blank, and cooling to obtain the double-zero aluminum foil.
2. The aluminum alloy material according to claim 1, wherein the specific smelting step in the step (1) and the step (2) is to perform high-temperature smelting in an inert gas atmosphere at a temperature of 720-750 ℃ for 2-6 hours, wherein the inert gas is at least one of nitrogen, helium, argon and neon.
3. The aluminum alloy material according to claim 1, wherein the refining in the step (1) and the step (2) is performed by adding a refining agent accounting for 0.3-0.5wt% of the total weight of the raw materials, and refining for 1-2 hours at the temperature of 730-740 ℃, and then removing slag.
4. The aluminum alloy material according to claim 1, wherein the annealing process conditions in the step (1) and the step (2) are annealing at a temperature of 350-360 ℃ for 1-2 hours.
5. The aluminum alloy material according to claim 1, wherein the rolling oil used in the cold rolling in the step (4) is formed by mixing 92-93 wt% of MR921 base oil, 5-6 wt% of WYROL10 lubricating oil and 1-3 wt% of WYROL12 lubricating oil.
6. An aluminum alloy material according to claim 1, wherein the specific method of double lap rolling in the step (3) is to heat the first hot rolled blank to 650 ℃, and heat the second hot rolled blank to 500 ℃ before lap rolling.
7. The aluminum alloy material according to claim 1, wherein the first annealing process conditions in the step (6) and the step (7) are annealing at a temperature of 350-370 ℃ for 2-3 hours, and the second annealing process conditions are annealing at a temperature of 360-375 ℃ for 1-2 hours.
8. The aluminum alloy material according to claim 1, wherein the annealing in the step (9) is performed at a temperature of 360-375 ℃ for 1-2 hours.
9. An aluminum alloy material according to claim 1, wherein the difference Δra between the roughness Ra of the first aluminum foil blank of 0.005mm thickness obtained in step (6) and the roughness Ra of the second aluminum foil blank of 0.005mm thickness obtained in step (7) is not less than 0.6 μm.
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