A kind of aluminum foil for container and preparation method thereof

A technology for aluminum foil and containers, which is applied in the field of aluminum foil for containers and its preparation, can solve problems such as uneven thickness, poor ductility, and low strength of aluminum foil, and achieve uniform distribution, good ductility, and uniform thinning effect

Active Publication Date: 2021-11-19
包头常铝北方铝业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of low strength, poor ductility and uneven thickness of aluminum foil for containers in the prior art, and provide an aluminum foil for containers and a preparation method thereof. The aluminum foil for containers prepared by the method has high strength , good ductility, uniform thickness

Method used

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Examples

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preparation example Construction

[0029] One aspect of the present invention provides a method for preparing an aluminum foil for a container, the method comprising the following steps:

[0030] (1) Place electrolytic aluminum liquid and titanium alloy in a smelting furnace for melting, and electromagnetically stir 3-5 times to obtain aluminum liquid, wherein the electrolytic aluminum liquid contains 0.05-0.08% by weight of Si, 0.5-1.5% by weight Fe, 0.3-0.5% by weight of Cu, 0.05-0.1% by weight of Mn, 0.2-0.4% by weight of Mg, 0-0.1% by weight of Zn, and the balance is aluminum;

[0031] (2) Refining in the smelting furnace using a secondary refining process, the refining temperature is 718-738°C, the refining time is 6-12min, 3-5 minutes after the refining is completed, the slag removal treatment is carried out, and then the composition inspection is carried out, and titanium alloy is added After adjusting the composition, carry out secondary refining again, and remove slag;

[0032] (3) Carry out a convert...

Embodiment 1

[0057] (1) Place electrolytic aluminum liquid and titanium alloy in a smelting furnace for melting, electromagnetically stir 4 times, the time of each electromagnetic stirring is 10 minutes, and the time interval between two electromagnetic stirring is 20 minutes, to obtain aluminum liquid, wherein, The electrolytic aluminum liquid contains 0.05% by weight of Si, 1.2% by weight of Fe, 0.5% by weight of Cu, 0.07% by weight of Mn, 0.3% by weight of Mg, 0.05% by weight of Zn, and the balance is aluminum;

[0058] (2) Refining is carried out in the smelting furnace using a secondary refining process. The refining temperature is 725°C and the refining time is 8 minutes. After 5 minutes of refining, the slag removal treatment is carried out, and then the composition inspection is carried out. Titanium alloy is added to adjust the composition and then carried out again Secondary refining, the refining time is 5 minutes, and the slag is removed;

[0059] (3) Carry out a converter to t...

Embodiment 2

[0064] (1) Place electrolytic aluminum liquid and titanium alloy in a smelting furnace for melting, electromagnetically stir 3 times, the time of each electromagnetic stirring is 12 minutes, and the time interval of twice electromagnetic stirring is 15 minutes, to obtain aluminum liquid, wherein, The electrolytic aluminum liquid contains 0.08% by weight of Si, 0.5% by weight of Fe, 0.3% by weight of Cu, 0.1% by weight of Mn, 0.2% by weight of Mg, 0.1% by weight of Zn, and the balance is aluminum;

[0065] (2) Refining is carried out in the smelting furnace using a secondary refining process. The refining temperature is 718°C and the refining time is 12 minutes. After 4 minutes of refining, the slag removal treatment is carried out, and then the composition inspection is carried out. Titanium alloy is added to adjust the composition and then carried out again Secondary refining, refining time is 10 minutes, slag removal;

[0066] (3) Carry out a converter to the refined aluminu...

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Abstract

The invention relates to the technical field of aluminum foil processing for containers, and discloses an aluminum foil for containers and a preparation method thereof. The method includes: (1) melting electrolytic aluminum liquid and titanium alloy, and electromagnetic stirring for 3-5 times; (2) refining by secondary refining process, carrying out slag removal treatment after 3-5 minutes, and then performing component inspection, Add titanium alloy to adjust the composition and carry out secondary refining again, and remove slag; (3) converter, filter after standing for 40-100 minutes; (4) add Al-5Ti-1B bar material through extrusion or rolling for crystallization (5) cooling, then performing multiple cold rolling and multiple annealing treatments; (6) performing five-pass rolling processes, and then electrostatically oiling the food grade The lubricating oil is atomized and sprayed onto the surface of the aluminum foil to obtain the finished aluminum foil. The aluminum foil for containers prepared by the method has high strength, good ductility and uniform thickness.

Description

technical field [0001] The invention relates to the technical field of aluminum foil processing for containers, in particular to an aluminum foil for containers and a preparation method thereof. Background technique [0002] At present, there are two production methods of aluminum and aluminum alloy foil for containers in my country (hereinafter referred to as container foil): one is the hot-rolled billet method, and the other is the cast-rolled billet method. The traditional hot rolling method is to cast the aluminum melt into an ingot with a thickness of several hundred millimeters, after homogenization, finishing, heating, hot rough rolling, hot finish rolling and other processes, it is rolled to a thickness of several millimeters, and then put into cold rolling. , aluminum foil rolling and other processes; and the casting and rolling method is to directly process the aluminum melt into a casting and rolling coil with a thickness of 6-8mm by using a twin-roll casting and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C1/06C22C21/00C22F1/04B21B1/40B05D1/04B05D7/14
CPCB05D1/04B05D7/14B05D2202/25B21B1/40C22C1/026C22C1/03C22C1/06C22C21/00C22F1/04
Inventor 包黎明张海平郝智伟
Owner 包头常铝北方铝业有限责任公司
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