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Aluminum alloy sheet for DI can body

A technology for aluminum alloy plates and tanks, applied in the field of aluminum alloy plates, can solve problems such as leakage of fillers

Inactive Publication Date: 2014-10-08
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in such a thinned can, especially when the side wall (peripheral surface) with a thin plate thickness is pressed (inwardly pressed) in contact with the protrusion, the front end of the protrusion passes through the side wall, and sometimes In case of perforation (pinhole) and leakage of filler

Method used

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  • Aluminum alloy sheet for DI can body
  • Aluminum alloy sheet for DI can body

Examples

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Embodiment

[0095] As mentioned above, the form for carrying out this invention was described, and the Example which confirmed the effect of this invention is compared with the comparative example which does not satisfy the requirement of this invention below, and it demonstrates concretely. In addition, this invention is not limited to this Example.

[0096] (sample aluminum alloy plate)

[0097] The aluminum alloys with the compositions shown in Table 1 were melted and semi-continuous casting was used to produce ingots at casting rates and cooling rates within the above-mentioned preferred numerical ranges for each example.

[0098] The above-mentioned 2 times of soaking were carried out on the ingot, and after the first soaking was carried out for 4 hours at a soaking temperature of 600° C. in each case, the average cooling rate (° C. / hour) of 500 to 200° C. was expressed as The ingot was temporarily cooled to room temperature while making various changes as shown in Table 1. Then, a...

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Abstract

An aluminum alloy sheet is a sheet of a specific 3000 series aluminum alloy for can bodies formed by drawing and ironing (DI). For producing the alloy sheet, the soaking conditions and hot rolling conditions for the ingot are controlled to produce a cold-rolled sheet having a structure in which the amount of a coarse Mn-based intermetallic compound is a specific value or less and a certain average amount of Mg in solution is ensured. The can body formed therefrom by DI has excellent piercing resistance even when used in a severe environment in which the can body has a lower internal pressure.

Description

technical field [0001] The present invention relates to a packaging container used for beverage and food, and particularly to an aluminum alloy plate formed by DI forming of a main body portion of a beverage can. Background technique [0002] Now, as one of the packaging containers used for beverages and foods, it is known to have a bottomed cylindrical main body (can body) with a bottom and a side wall integrally structured and a circle on which the opening for sealing the main body becomes an upper surface. A 2-piece can with a plate-shaped lid (can lid). As a material for such a tank, aluminum alloy plates ranging from AA to JIS 3000 series are widely used in terms of formability, corrosion resistance, strength, and the like. Among the two-piece cans made of this aluminum alloy plate, the main body of cylindrical cans with a height as high as beverage cans is often subjected to drawing and wall ironing called DI (Drawing and wall Ironing) - thinning and drawing. Formed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/06C22C21/00C22F1/00C22F1/04
CPCC22C21/00B21D51/26B21D22/28C22F1/00C22C21/06C22F1/04B21D35/005
Inventor 有贺康博松本克史鹤田淳人正田良治山口正浩井上祐志
Owner KOBE STEEL LTD
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