CN112626380A - 8011 aluminum alloy foil for making cover and manufacturing method thereof - Google Patents
8011 aluminum alloy foil for making cover and manufacturing method thereof Download PDFInfo
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- CN112626380A CN112626380A CN202011469547.8A CN202011469547A CN112626380A CN 112626380 A CN112626380 A CN 112626380A CN 202011469547 A CN202011469547 A CN 202011469547A CN 112626380 A CN112626380 A CN 112626380A
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- 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
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- 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
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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
- C22C1/026—Alloys based on aluminium
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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
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- 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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
Abstract
A8011 aluminum alloy foil for making a cover and a manufacturing method thereof relate to the technical field of aluminum alloy foil manufacturing. The invention aims to solve the problem that the molding production process of the foil which is not in a 8011 aluminum alloy H16 state and has the thickness of 0.15-0.20mm is not available at home at present. A8011 aluminum alloy foil for making a cover comprises the following elements in percentage by mass: 0.60-0.80% of Si, 0.70-0.90% of Fe, 0.08-0.18% of Cu, 0.02-0.06% of Mn, 0.01-0.04% of Mg, 0.001-0.007% of Cr, 0.02-0.05% of Ti and less than 0.10% of Zn, and the balance of Al. The invention can obtain 8011 aluminum alloy foil for manufacturing the cover and a manufacturing method thereof.
Description
Technical Field
The invention relates to the technical field of aluminum alloy foil manufacturing, in particular to 8011 aluminum alloy foil for cover manufacturing and a manufacturing method thereof.
Background
The 8011 aluminum alloy has the characteristics of small density, good electrical conductivity, high thermal conductivity and the like, has better corrosion resistance, and has important application value in many fields. 8011 aluminum alloy foils in different heat treatment states are main materials used in the can making industry (especially for making can covers), and no production process of the formed 8011 aluminum alloy foil with the H16 state and the thickness of 0.15-0.20mm is provided at home at present. In order to meet the demand of the market on 8011H16 foil, the influence of factors such as cold rolling processing, cold processing rate, annealing heat preservation time and the like on the organization and the performance of 8011H16 aluminum alloy foil is systematically researched in combination with production practice, the production process of the H16 state is determined, foil meeting the user requirements is produced, and the technical problem of the current aluminum alloy foil production and processing is solved.
Disclosure of Invention
The invention aims to solve the problem that a molding production process of a foil with the thickness of 0.15-0.20mm, which does not have a 8011 aluminum alloy H16 state, is provided at home, and provides a 8011 aluminum alloy foil for manufacturing a cover and a manufacturing method thereof.
A8011 aluminum alloy foil for making a cover comprises the following elements in percentage by mass: 0.60-0.80% of Si, 0.70-0.90% of Fe, 0.08-0.18% of Cu, 0.02-0.06% of Mn, 0.01-0.04% of Mg, 0.001-0.007% of Cr, 0.02-0.05% of Ti and less than 0.10% of Zn, and the balance of Al.
A manufacturing method of 8011 aluminum alloy foil for manufacturing covers comprises the following steps:
firstly, according to mass fraction: 0.60-0.80% of Si, 0.70-0.90% of Fe, 0.08-0.18% of Cu, 0.02-0.06% of Mn, 0.01-0.04% of Mg, 0.001-0.007% of Cr, 0.02-0.05% of Ti, less than 0.10% of Zn and the balance of Al, and weighing a pure magnesium ingot, an aluminum-manganese intermediate alloy, an aluminum-titanium intermediate alloy, an aluminum-silicon intermediate alloy, an aluminum-iron intermediate alloy, electrolytic copper, an aluminum-nickel intermediate alloy, an aluminum-zinc intermediate alloy and an aluminum ingot for remelting;
secondly, smelting the weighed pure magnesium ingot, the aluminum-manganese intermediate alloy, the aluminum-titanium intermediate alloy, the aluminum-silicon intermediate alloy, the aluminum-iron intermediate alloy, the electrolytic copper, the aluminum-nickel intermediate alloy, the aluminum-zinc intermediate alloy and the aluminum ingot for remelting at the temperature of 700-750 ℃ for 3-5 h to obtain an aluminum alloy solution; casting the aluminum alloy melt under the conditions that the casting temperature is 690-710 ℃, the casting speed is 3.3-3.6 m/h, the cooling water strength is 0.08-0.15 MPa, and the cooling water temperature is 10-20 ℃ to obtain an aluminum alloy ingot;
thirdly, heating the aluminum alloy cast ingot to 500-565 ℃, preserving heat for 24h at 500-565 ℃, then cooling to 460-480 ℃, preserving heat for 2h at 460-480 ℃, and performing primary rolling at 440-480 ℃ to obtain a rough strip; and (3) insulating the blank strip for 10-12 h at 280-380 ℃, then performing secondary rolling to the thickness of a finished product, and performing stretch bending, straightening and cleaning to obtain 8011 aluminum alloy foil for making the cover.
The invention has the beneficial effects that:
the invention relates to a 8011 aluminum alloy foil for making a cover and a manufacturing method thereof, which explore the influence of cold rolling processing, cold processing rate, stabilizing annealing temperature and heat preservation time on the tissue and performance of the foil, select reasonable process flow, hot-roll aluminum alloy cast ingots to different thicknesses, and respectively carry out different intermediate annealing temperatures, different heat preservation times and different finished product pass rolling rate tests, the produced 8011 aluminum alloy foil for making the cover has uniform thickness and uniform surface, the tensile strength is 148 MPa-155 MPa, the elongation is more than or equal to 2 percent, can be used as an aluminum alloy strip product for deep drawing to be applied to various deep drawing fields of the cover making industry and the like, and fills the blank of the preparation process of the 8011H16 aluminum alloy foil in China.
The invention can obtain 8011 aluminum alloy foil for manufacturing the cover and a manufacturing method thereof.
Detailed Description
The first embodiment is as follows: the 8011 aluminum alloy foil for manufacturing the cover in the embodiment comprises the following elements in percentage by mass: 0.60-0.80% of Si, 0.70-0.90% of Fe, 0.08-0.18% of Cu, 0.02-0.06% of Mn, 0.01-0.04% of Mg, 0.001-0.007% of Cr, 0.02-0.05% of Ti and less than 0.10% of Zn, and the balance of Al.
In the 8011 aluminum alloy foil for making the cover in the embodiment, the single impurity is less than or equal to 0.05 percent, the range of all impurities is less than or equal to 0.15 percent, and the impurities are controlled within the range, so that the performance of the aluminum alloy foil is not influenced.
The second embodiment is as follows: the present embodiment differs from the present embodiment in that: the 8011 aluminum alloy foil contains the following elements in percentage by mass: 0.65% of Si, 0.70% of Fe, 0.14% of Cu, 0.03% of Mn, 0.025% of Mg, 0.005% of Cr, 0.02% of Ti and less than 0.10% of Zn, and the balance of Al.
Other steps are the same as those in the first embodiment.
The third concrete implementation mode: the method for manufacturing 8011 aluminum alloy foil for manufacturing the cover in the embodiment comprises the following steps:
firstly, according to mass fraction: 0.60-0.80% of Si, 0.70-0.90% of Fe, 0.08-0.18% of Cu, 0.02-0.06% of Mn, 0.01-0.04% of Mg, 0.001-0.007% of Cr, 0.02-0.05% of Ti, less than 0.10% of Zn and the balance of Al, and weighing a pure magnesium ingot, an aluminum-manganese intermediate alloy, an aluminum-titanium intermediate alloy, an aluminum-silicon intermediate alloy, an aluminum-iron intermediate alloy, electrolytic copper, an aluminum-nickel intermediate alloy, an aluminum-zinc intermediate alloy and an aluminum ingot for remelting;
secondly, smelting the weighed pure magnesium ingot, the aluminum-manganese intermediate alloy, the aluminum-titanium intermediate alloy, the aluminum-silicon intermediate alloy, the aluminum-iron intermediate alloy, the electrolytic copper, the aluminum-nickel intermediate alloy, the aluminum-zinc intermediate alloy and the aluminum ingot for remelting at the temperature of 700-750 ℃ for 3-5 h to obtain an aluminum alloy solution; casting the aluminum alloy melt under the conditions that the casting temperature is 690-710 ℃, the casting speed is 3.3-3.6 m/h, the cooling water strength is 0.08-0.15 MPa, and the cooling water temperature is 10-20 ℃ to obtain an aluminum alloy ingot;
thirdly, heating the aluminum alloy cast ingot to 500-565 ℃, preserving heat for 24h at 500-565 ℃, then cooling to 460-480 ℃, preserving heat for 2h at 460-480 ℃, and performing primary rolling at 440-480 ℃ to obtain a rough strip; and (3) insulating the blank strip for 10-12 h at 280-380 ℃, then performing secondary rolling to the thickness of a finished product, and performing stretch bending, straightening and cleaning to obtain 8011 aluminum alloy foil for making the cover.
The beneficial effects of the embodiment are as follows:
according to the 8011 aluminum alloy foil for making the cover and the manufacturing method thereof, the influence of cold rolling processing, cold processing rate, stabilizing annealing temperature and heat preservation time on the tissue and performance of the foil is researched, a reasonable process flow is selected, aluminum alloy cast ingots are hot-rolled to different thicknesses, different intermediate annealing temperatures, different heat preservation times and different finished product pass rolling rate tests are respectively carried out, the produced 8011 aluminum alloy foil for making the cover is uniform in thickness and surface, the tensile strength is 148-155 MPa, the elongation is more than or equal to 2%, the foil can be used as an aluminum alloy strip product for deep drawing to be applied to various deep drawing fields of cover making industry and the like, and the blank of the preparation process of the 8011H16 aluminum alloy foil in China is filled.
The fourth concrete implementation mode: the third difference between the present embodiment and the specific embodiment is: in the first step, the mass fraction: 0.65% of Si, 0.70% of Fe, 0.14% of Cu, 0.03% of Mn, 0.025% of Mg, 0.005% of Cr, 0.02% of Ti, less than 0.10% of Zn and the balance of Al, and weighing a pure magnesium ingot, an aluminum-manganese intermediate alloy, an aluminum-titanium intermediate alloy, an aluminum-silicon intermediate alloy, an aluminum-iron intermediate alloy, electrolytic copper, an aluminum-nickel intermediate alloy, an aluminum-zinc intermediate alloy and an aluminum ingot for remelting.
The other steps are the same as those in the third embodiment.
The fifth concrete implementation mode: the third or fourth difference between the present embodiment and the specific embodiment is: and casting the aluminum alloy ingot in the step two by adopting a semi-continuous casting method, wherein the grain size of the ingot is less than or equal to 2 grade.
The other steps are the same as those of the third or fourth embodiment.
The sixth specific implementation mode: the third to fifth embodiments are different from the first to fifth embodiments in that: and the thickness of the aluminum alloy ingot in the second step is 220-520 mm.
The other steps are the same as those in the third to fifth embodiments.
The seventh embodiment: the third to sixth differences from the present embodiment are as follows: in the third step, the aluminum alloy cast ingot after heat preservation at 500-565 ℃ is manually cooled to 460-480 ℃ within 2 h.
The other steps are the same as those in the third to sixth embodiments.
The specific implementation mode is eight: the third to seventh differences from the present embodiment are as follows: the first rolling in the third step is to adopt a 2100mm hot rough rolling mill to sequentially carry out hot rough rolling and hot finish rolling, the emulsion concentration of the hot rough rolling is 3.0-3.5, and the emulsion concentration of the hot finish rolling is more than or equal to 7.0%.
The other steps are the same as those of the third to seventh embodiments.
The specific implementation method nine: the third to eighth differences from the present embodiment are: the second rolling in the third step is cold rolling, and the cold rolling reduction rate is 25-50%.
The other steps are the same as those in the third to eighth embodiments.
The following examples were used to demonstrate the beneficial effects of the present invention:
the first embodiment is as follows: a8011 aluminum alloy foil for making a cover comprises the following elements in percentage by mass: 0.65% of Si, 0.70% of Fe, 0.14% of Cu, 0.03% of Mn, 0.025% of Mg, 0.005% of Cr, 0.02% of Ti and less than 0.10% of Zn, and the balance of Al.
Example two: a manufacturing method of 8011 aluminum alloy foil for manufacturing covers comprises the following steps:
firstly, according to mass fraction: weighing a pure magnesium ingot, an aluminum-manganese intermediate alloy, an aluminum-titanium intermediate alloy, an aluminum-silicon intermediate alloy, an aluminum-iron intermediate alloy, electrolytic copper, an aluminum-nickel intermediate alloy, an aluminum-zinc intermediate alloy and an aluminum ingot for remelting, wherein the Si is 0.65%, the Fe is 0.70%, the Cu is 0.14%, the Mn is 0.03%, the Mg is 0.025%, the Cr is 0.005%, the Ti is 0.02%, the Zn is less than 0.10%, and the balance is Al;
secondly, adding the weighed pure magnesium ingot, the aluminum-manganese intermediate alloy, the aluminum-titanium intermediate alloy, the aluminum-silicon intermediate alloy, the aluminum-iron intermediate alloy, the electrolytic copper, the aluminum-nickel intermediate alloy, the aluminum-zinc intermediate alloy and the aluminum ingot for remelting into a dry smelting furnace, and smelting for 4 hours at the temperature of 730 ℃ to obtain an aluminum alloy solution; casting the aluminum alloy melt by a semi-continuous casting method under the conditions that the casting temperature is 700 ℃, the casting speed is 3.5m/h, the cooling water strength is 0.15MPa and the cooling water temperature is 15 ℃ to obtain an aluminum alloy ingot with the thickness of 520mm, wherein the grain size of the ingot is less than or equal to 2 grade;
thirdly, placing the aluminum alloy cast ingot into a heat treatment furnace to be heated to 565 ℃, preserving heat for 24 hours at the temperature of 565 ℃, manually cooling to 480 ℃ within 2 hours, preserving heat for 2 hours at the temperature of 480 ℃, sequentially carrying out hot rough rolling and hot finish rolling by adopting a 2100mm hot rough rolling machine at 460 ℃ to obtain a rough material strip, and controlling the concentration of emulsion in the hot rough rolling to be 3.0-3.5 and the concentration of emulsion in the hot finish rolling to be 8.0%; putting the rough strip into a heating furnace, preserving the heat for 12 hours at 380 ℃, and carrying out intermediate annealing treatment; and then rolling the product to the thickness of a finished product in a cold rolling mill according to the cold working rate of 40-45%, and putting the product into a stretch bending straightening machine to be subjected to stretch bending straightening and cleaning to obtain the 8011 aluminum alloy foil for manufacturing the cover.
Through inspection, the 8011 aluminum alloy foil for making the cover prepared by the implementation has uniform thickness and uniform surface, the tensile strength is 148MPa to 155MPa, the elongation is more than or equal to 2 percent, and the aluminum alloy foil can be used as an aluminum alloy strip product for deep drawing to be applied to various deep drawing fields of cover making industry and the like.
Claims (9)
1. A8011 aluminum alloy foil for making a cover is characterized by comprising the following elements in percentage by mass: 0.60-0.80% of Si, 0.70-0.90% of Fe, 0.08-0.18% of Cu, 0.02-0.06% of Mn, 0.01-0.04% of Mg, 0.001-0.007% of Cr, 0.02-0.05% of Ti and less than 0.10% of Zn, and the balance of Al.
2. The 8011 aluminum alloy foil for manufacturing covers of claim 1, wherein the 8011 aluminum alloy foil comprises the following elements in percentage by mass: 0.65% of Si, 0.70% of Fe, 0.14% of Cu, 0.03% of Mn, 0.025% of Mg, 0.005% of Cr, 0.02% of Ti and less than 0.10% of Zn, and the balance of Al.
3. A method of making 8011 aluminium alloy foil as claimed in claim 1, wherein the method comprises the steps of:
firstly, according to mass fraction: 0.60-0.80% of Si, 0.70-0.90% of Fe, 0.08-0.18% of Cu, 0.02-0.06% of Mn, 0.01-0.04% of Mg, 0.001-0.007% of Cr, 0.02-0.05% of Ti, less than 0.10% of Zn and the balance of Al, and weighing a pure magnesium ingot, an aluminum-manganese intermediate alloy, an aluminum-titanium intermediate alloy, an aluminum-silicon intermediate alloy, an aluminum-iron intermediate alloy, electrolytic copper, an aluminum-nickel intermediate alloy, an aluminum-zinc intermediate alloy and an aluminum ingot for remelting;
secondly, smelting the weighed pure magnesium ingot, the aluminum-manganese intermediate alloy, the aluminum-titanium intermediate alloy, the aluminum-silicon intermediate alloy, the aluminum-iron intermediate alloy, the electrolytic copper, the aluminum-nickel intermediate alloy, the aluminum-zinc intermediate alloy and the aluminum ingot for remelting at the temperature of 700-750 ℃ for 3-5 h to obtain an aluminum alloy solution; casting the aluminum alloy melt under the conditions that the casting temperature is 690-710 ℃, the casting speed is 3.3-3.6 m/h, the cooling water strength is 0.08-0.15 MPa, and the cooling water temperature is 10-20 ℃ to obtain an aluminum alloy ingot;
thirdly, heating the aluminum alloy cast ingot to 500-565 ℃, preserving heat for 24h at 500-565 ℃, then cooling to 460-480 ℃, preserving heat for 2h at 460-480 ℃, and performing primary rolling at 440-480 ℃ to obtain a rough strip; and (3) insulating the blank strip for 10-12 h at 280-380 ℃, then performing secondary rolling to the thickness of a finished product, and performing stretch bending, straightening and cleaning to obtain 8011 aluminum alloy foil for making the cover.
4. The method for manufacturing 8011 aluminum alloy foil for cover production as claimed in claim 3, wherein in the first step: 0.65% of Si, 0.70% of Fe, 0.14% of Cu, 0.03% of Mn, 0.025% of Mg, 0.005% of Cr, 0.02% of Ti, less than 0.10% of Zn and the balance of Al, and weighing a pure magnesium ingot, an aluminum-manganese intermediate alloy, an aluminum-titanium intermediate alloy, an aluminum-silicon intermediate alloy, an aluminum-iron intermediate alloy, electrolytic copper, an aluminum-nickel intermediate alloy, an aluminum-zinc intermediate alloy and an aluminum ingot for remelting.
5. The method for manufacturing 8011 aluminum alloy foil for cover production according to claim 3, wherein the aluminum alloy ingot casting in the second step is cast by a semi-continuous casting method, and the grain size of the ingot casting is not more than 2 grade.
6. The method of claim 3, wherein the aluminum alloy ingot of step two has a thickness of 220mm to 520 mm.
7. The method for manufacturing 8011 aluminum alloy foil for cover production according to claim 3, wherein the aluminum alloy ingot which is kept warm at 500 ℃ -565 ℃ is manually cooled to 460 ℃ -480 ℃ within 2 h.
8. The method for manufacturing 8011 aluminum alloy foil for cover production according to claim 3, wherein the first rolling in the third step is a 2100mm hot roughing rolling mill, which is sequentially subjected to hot roughing rolling and hot finish rolling, wherein the emulsion concentration of the hot roughing rolling is 3.0-3.5, and the emulsion concentration of the hot finish rolling is not less than 7.0%.
9. The method of claim 3, wherein the second rolling in the third step is cold rolling, and the cold rolling reduction rate is 25% -50%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115449658A (en) * | 2022-08-16 | 2022-12-09 | 洛阳龙鼎铝业有限公司 | 8011L alloy cast-rolling blank crack-free production process |
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