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Aluminum Alloy Cold Rolled Sheet for Bottles and Cans

A technology of aluminum alloy and cold-rolled sheet, which is applied in the field of raw material sheets for bottles and cans, to achieve the effects of reducing manufacturing costs, reducing soaking temperature, and reducing the amount of trimming

Active Publication Date: 2015-10-14
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In addition, even if the lug rate itself is reduced, if the deviation of the lug rate in the width direction of the cold-rolled sheet is not suppressed, it is not necessarily a material with a stable and good lug rate.

Method used

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  • Aluminum Alloy Cold Rolled Sheet for Bottles and Cans
  • Aluminum Alloy Cold Rolled Sheet for Bottles and Cans
  • Aluminum Alloy Cold Rolled Sheet for Bottles and Cans

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Embodiment Construction

[0048] (Al alloy cold-rolled sheet composition)

[0049] First, the chemical composition of the aluminum alloy cold-rolled sheet (ingot) of the present invention, including the reason for limitation of each element, will be described below.

[0050] The chemical composition of the aluminum alloy cold-rolled sheet of the present invention, as a raw material for bottles and cans, needs to satisfy the above-mentioned necessary characteristics such as the formability and strength of cans, and from the point of view of the chemical composition, it is necessary to satisfy the required properties. Describe the organization specified by the present invention. Therefore, the aluminum alloy cold-rolled sheet of the present invention has the following composition: containing Mn: 0.3-1.2 mass%, Mg: 1.0-3.0 mass%, Fe: 0.3-0.7 mass%, Si: 0.1-0.5 mass%, and the Fe The mass composition ratio (Fe / Mn) with Mn is in the range of 0.45 to 1.5, and the balance is composed of Al and unavoidable imp...

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Abstract

The present invention reduces the cost of production of a cold-rolled aluminum alloy sheet to be used as a material for bottle cans and reduces the width-direction unevenness of earing. This cold-rolled aluminum alloy sheet for bottle cans has a specific composition and has a structure which contains a small amount of dispersed particles having a center-of-gravity diameter less than 1 µm, which represent an a phase, and in which the ratio of the amount of the ß phase that is an Al6(Fe,Mn)-based intermetallic compound to the amount of the a phase that is an Al-Fe-Mn-Si-based intermetallic compound is 0.50 or more in terms of the ratio of the maximum height Hß of the X-ray diffraction peaks and the maximum height Ha of the X-ray diffraction peaks, Hß / Ha. Thus, the hot-rolled sheet in the invention has an even degree of recrystallization in the sheet-width direction, and the cold-rolled aluminum alloy sheet has low width-direction unevenness of earing.

Description

technical field [0001] The present invention relates to a raw material plate for bottles and cans, and in detail, relates to an aluminum alloy cold-rolled plate for bottles and cans. In addition, the aluminum cold-rolled alloy sheet of the present invention is a cold-rolled sheet of a rolled sheet (cold-rolled sheet) rolled by hot rolling-cold rolling or modified by further heat treatment. plate. In addition, the aluminum alloy is also called an Al alloy hereinafter. Background technique [0002] As aluminum-based beverage cans, two-piece aluminum cans obtained by seaming a can body and a can end are often used. The can body is subjected to DI processing (drawing and ironing) of an aluminum-based cold-rolled sheet, trimmed to a predetermined size, and then degreased / cleaned. It is manufactured by painting and printing, baking, and necking and flange processing on the edge of the can body. Hereinafter, the can manufactured in this way is also called a DI can. [0003] As...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/06C22F1/04C22F1/047C22F1/00
CPCC22C21/08C22F1/047C22C21/06C22F1/04
Inventor 有贺康博松本克史鹤田淳人正田良治井上祐志
Owner KOBE STEEL LTD
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