Aluminium foil material for tableware and manufacturing method of aluminium foil for tableware

A manufacturing method and technology of aluminum foil, which are applied in the field of manufacturing aluminum foil materials for tableware and aluminum foil for tableware, can solve problems such as insufficient punching depth, easy growth of grains, and increased production costs, so as to reduce intragranular segregation and avoid crystal segregation. The effect of grain growth and control of production cost

Inactive Publication Date: 2010-08-25
JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

The aluminum foil for tableware produced by 3003 alloy has good punching performance. Due to the high content of Mn element in the alloy, the grains are easy to grow during homogenization annealing. After rolling to the thickness of the finished product (0.03 ~ 0.08mm ), coarse grain stripes will inevitably appear on the surface, which will affect the normal use of customers; A large amount of copper and manganese metals need to be added, which increases the production cost of the enterprise
Although the aluminum foil for tableware produced by 8011 alloy can overcome some shortcomings of 3003 alloy, because the content of alloy elements in 8011 alloy is low, but its performance is soft, it is not suitable for high-speed punching, and the punching depth is insufficient, and its application range is limited. very restrictive

Method used

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Embodiment Construction

[0013] The composition and weight percentage of the embodiment of the material of the present invention are: Si 0.2~0.30%, Fe 1.40~1.50%, Cu 0.05%, Mn 0.50~0.60%, Mg 0.05%, Cr 0.01%, Zn 0.05%, Ti 0.05% %, Al balance, each component is smelted into an alloy.

[0014] Embodiments of the method of the present invention go through the following steps successively:

[0015] a. Smelting, smelting the raw materials with the above ingredients and proportions. The smelting must be degassed and slag removed. Electromagnetic stirring is used to stir the melt evenly. The temperature of the entire smelting process is controlled below 770°C. Controlled at 750±5℃;

[0016] b. Casting and rolling, during casting and rolling production, the rotary blowing method is used for online degassing, and the melt is purified by 30PPi+50PPi plate-type double-stage filtration to ensure that the hydrogen content in the melt is ≤0.15ml / 100g. The agent uses aluminum titanium boron wire produced by Shenzhe...

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Abstract

The invention relates to an aluminium foil material for tableware and a manufacturing method of aluminium foils for the tableware, belonging to the technical field of manufacture of aluminium alloy materials and the aluminium foils. The aluminium foil material comprises the following components in percentage by weight: 0.2-0.30% of Si, 1.40-1.50% of Fe, 0.05% of Cu, 0.50-0.60% of Mn, 0.05% of Mg, 0.01% of Cr, 0.05% of Zn, 0.05% of Ti, and the balance of Al, wherein the components are smelted into an alloy. The manufacturing method of the aluminium foils for the tableware comprises the following steps of: a, smelting; b, casting; c, uniform annealing; d, cold rolling; e, foil rolling; and f, finished product annealing. The invention can prevent an aluminium coil from generating grain growth during the uniform annealing and also has better machining property and easy rolling.

Description

technical field [0001] The invention belongs to the manufacturing technology of aluminum alloy material and aluminum foil, and relates to an aluminum foil material for tableware and a method for manufacturing the aluminum foil for tableware. Background technique [0002] The alloy used to produce aluminum foil for tableware is generally 3003 alloy or 8011 alloy. The aluminum foil for tableware produced by 3003 alloy has good punching performance. Due to the high content of Mn element in the alloy, the grains are easy to grow during homogenization annealing. After rolling to the thickness of the finished product (0.03 ~ 0.08mm ), coarse grain stripes will inevitably appear on the surface, which will affect the normal use of customers; A large amount of copper and manganese metals need to be added, which increases the production cost of the enterprise. Although the aluminum foil for tableware produced by 8011 alloy can overcome some shortcomings of 3003 alloy, because the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00B21B1/40
Inventor 董则防张安乐
Owner JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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