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Fusion casting technology for aluminum alloy flat ingot for packaging tin

An aluminum alloy and packaging can technology, applied in the field of aluminum alloy melting and casting, can solve the problems of immature production technology and a small number of 3 series aluminum alloy flat ingots.

Inactive Publication Date: 2017-03-22
GUANGXI UNIV
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  • Summary
  • Abstract
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Problems solved by technology

[0004] At present, the domestic production of 3-series aluminum alloy flat ingots meeting the above quality requirements is relatively small, which cannot meet the needs of can production, and a large number of cans need to be imported from abroad. The main reason is that the existing production technology is not mature enough and needs further improvement.

Method used

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Embodiment Construction

[0015] The present invention will be further described in detail below in conjunction with the examples.

[0016] An aluminum alloy flat ingot melting and casting process for packaging cans, comprising the following steps:

[0017] (1) Ingredients: 99.70% remelted aluminum ingots, Al-Mn, A1-Fe, Al-Si, Al-Cu master alloys, and remelted magnesium ingots are used as raw materials, and the ingredients are prepared according to the following mass fractions: Si: 0.17-0.23 %, Fe: 0.36-0.44%, Cu: 0.15-0.19%, Mn: 0.80-0.94%, Mg: 1.16-1.30%, Zn: ≤0.15%, Ti: ≤0.06%, and the balance is Al.

[0018] (2) Melting: start feeding when the furnace temperature reaches above 800°C. After the molten aluminum is completely melted, start the electromagnetic stirrer to stir for 30 minutes to ensure the composition and temperature uniformity of the alloy melt; when the temperature of the molten aluminum rises to above 730°C , carry out manual stirring, and after stirring evenly, pre-refining the melt...

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Abstract

The invention relates to a fusion casting technology for an aluminum alloy flat ingot for a packaging tin. Through smelting temperature control, electromagnetic stirring and melt refining, the slag content, nitrogen content and alkali metal content in melt are effectively reduced, uniformity of alloy components is guaranteed, and a low-liquid-level aluminum alloy flat ingot casting machine is adopted for controlling the casting speed and water flow in the casting process; and casting cracks and feather crystals are avoided, the product yield is greatly increased, and the product production rate is increased.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy melting and casting, and in particular relates to a melting and casting process of an aluminum alloy flat ingot for can materials. Background technique [0002] With the development of the national economy and the improvement of the quality of life of the people, the demand for beverage packaging made of aluminum alloy materials continues to grow. At present, the widely used carbonated beverage packaging cans in the market are mainly made of 3-series aluminum alloys. In developed countries such as the United States and Japan, 3-series aluminum alloys have been used as packaging cans for beer, cola and other beverages for a long time, while the history of using aluminum alloy materials as packaging cans in China is relatively short. [0003] In order to produce qualified tank products, the 3-series aluminum alloy slabs are required to meet the following quality requirements: (1) The hydroge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/03C22C1/06B22D21/04
CPCC22C21/08B22D21/04C22C1/026C22C1/03C22C1/06
Inventor 龚静
Owner GUANGXI UNIV
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