A kind of manufacturing method of special aluminum foil material for bottle caps

A manufacturing method and technology of aluminum foil, applied in metal rolling and other directions, can solve the problems of low production efficiency and yield, influence of painting and glazing effects, and easy oxidation of aluminum foil, so as to reduce oxidative corrosion, improve surface quality and Paint quality, excellent bake resistance

Active Publication Date: 2019-11-19
JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The aluminum foil obtained by existing aluminum alloy materials and rolling methods is difficult to meet higher requirements, and has the defects of low production efficiency and yield, poor rolling performance, and low rupture strength. At the same time, because the processing of aluminum foil bottle caps is mostly If it is carried out at high temperature, the two sides of the aluminum foil are prone to oxidation, which not only reduces the food grade of the aluminum foil, but also affects the effect of painting and glazing.

Method used

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  • A kind of manufacturing method of special aluminum foil material for bottle caps
  • A kind of manufacturing method of special aluminum foil material for bottle caps

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Effect test

Embodiment 1

[0024] A method for manufacturing a special aluminum foil material for bottle caps, characterized in that the alloy composition and weight percentage in the special aluminum foil material for bottle caps are: Fe, Si mixture 0.99%, Cu 0.04%, Mn 0.04%, Mg 0.03%, Zn 0.03%, Ti 0.055%, and the balance is Al.

[0025] Its manufacturing method comprises the following specific steps:

[0026] a: Melting, casting and rolling: Select a specific aluminum alloy ingot according to the composition and weight percentage of the alloy, and add the aluminum alloy ingot to a large-capacity regenerative melting furnace, and melt it at 735°C and 725°C respectively and refining. After the refining is completed, the aluminum melt is obtained. The aluminum melt enters the front box of the casting and rolling machine through the launder, and is cast and rolled by the casting and rolling machine. The thickness of the aluminum foil blank after casting and rolling is 6.0±0.4mm;

[0027] b: Intermediate ...

Embodiment 2

[0039] The difference between this embodiment and Embodiment 1 is that it is a method for manufacturing a special aluminum foil material for bottle caps. It is characterized in that the alloy composition and weight percentage in the special aluminum foil material for bottle caps are: Fe, Si Mixture 1.22%, Cu 0.03%, Mn 0.02%, Mg 0.06%, Zn 0.04%, Ti 0.065%, and the balance is Al.

[0040] Its manufacturing method comprises the following specific steps:

[0041] a: Melting, casting and rolling: select a specific aluminum alloy ingot according to the alloy composition and weight percentage, and add the aluminum alloy ingot to a large-capacity regenerative melting furnace, and melt it at 745°C and 730°C respectively and refining. After the refining is completed, the aluminum melt is obtained. The aluminum melt enters the front box of the casting and rolling machine through the launder, and is cast and rolled by the casting and rolling machine. The thickness of the aluminum foil bla...

Embodiment 3

[0048] The difference between this embodiment and Embodiments 1 and 2 is that it is a method for manufacturing a special aluminum foil material for bottle caps, which is characterized in that the alloy composition and weight percentage in the special aluminum foil material for bottle caps are: Fe , Si mixture 1.45%, Cu 0.03%, Mn 0.01%, Mg 0.03%, Zn 0.03%, Ti 0.065%, and the balance is Al.

[0049] Its manufacturing method comprises the following specific steps:

[0050] a: Melting, casting and rolling: Select a specific aluminum alloy ingot according to the composition and weight percentage of the alloy, and add the aluminum alloy ingot to a large-capacity regenerative melting furnace, and melt it at 750°C and 730°C respectively and refining. After the refining is completed, the aluminum melt is obtained. The aluminum melt enters the front box of the casting and rolling machine through the launder, and is cast and rolled by the casting and rolling machine. The thickness of the...

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Abstract

The invention discloses a manufacturing method for an aluminum foil material special for a bottle cap. The aluminum foil material comprises alloy components including, by weight percent, Fe and Si mixtures, Cu, Mn, Mg, Zn, Ti and the balance Al and is obtained through the steps of smelting and cast rolling, intermediate rolling, homogenizing annealing, foil rolling and trimming, cropping and coating. By adjusting the weight ratio of Fe to Si and the mass ratio of the Fe to the Si, generation of an alpha phase and a beta phase of a Al-Fe-Si phase is controlled, the alloy degree is improved, theimprovement of plasticity of a finished product is promoted, the mechanical performance is improved, and the machining fracture rate is reduced; and meanwhile, to reduce surface layer oxidation corrosion of aluminum foil during bottle cap machining, coating of a high-temperature resistant anticorrosion coating is carried out, the baking resisting performance is outstanding, the surface quality and the paint quality of the finished product of the bottle cap are advantageously improved, and the technical improvement of coating missing is also carried out on an existing roller coater.

Description

technical field [0001] The invention relates to the production of aluminum foil, in particular to a method for manufacturing a special aluminum foil material for bottle caps. Background technique [0002] Aluminum anti-theft bottle cap is a new type of packaging material that is popular in domestic and foreign markets. Compared with traditional plastic bottle caps or tinplate caps, it is widely consumed for its good sealing performance, high pressure resistance, corrosion resistance, beautiful appearance, and environmental protection. favored by those. In addition to good deep drawing performance and low anisotropy, its manufacturing materials also require a certain baking strength after being cured by multiple color printing. At present, the aluminum alloys used to produce anti-theft covers on the market are generally 1100, 8011 and other alloys. Since the user has to carry out five heating processes such as baking, painting, and glazing in the process of processing bottl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/02B21B1/40B21B1/46C22F1/04
CPCB21B1/40B21B1/46C22C1/026C22C21/00C22F1/04
Inventor 万宝伟黄绍浪高广荣董则防王超新陆佳
Owner JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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