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Aluminum-base alloy sheet

A technology of aluminum alloy plate and plate width, which is applied in the field of aluminum alloy plate and can solve problems such as insufficient effect

Inactive Publication Date: 2010-12-15
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there is a problem that even if the grains of the aluminum alloy plate used as the raw material are so fine that orange peel does not occur, wrinkles will still occur due to extrusion.
However, in the case of molding into a panel with a deeper shape or a panel with a more complicated three-dimensional shape, the effect is not sufficient when the molding conditions are more severe.

Method used

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  • Aluminum-base alloy sheet
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  • Aluminum-base alloy sheet

Examples

Experimental program
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Effect test

Embodiment

[0135] Next, examples of the present invention will be described. Under the conditions shown in Table 2, homogenization heat treatment (abbreviated as soaking treatment) and hot rolling (abbreviated as hot rolling) were carried out for the 6000 series aluminum alloy plates with A-K composition shown in Table 1, and then cold rolled. Manufactured by rolling, solution and quenching. In addition, in the expression of the content of each element in Table 1, "-" shows below a detection limit.

[0136] More specific production conditions of the aluminum alloy plate are as follows. Ingots having a thickness of 500 mm, a width of 2000 mm, and a length of 7 m each having the compositions shown in Table 1 were melted by the DC casting method. At this time, as shown in Table 2, the cooling rate (°C / min) during casting was changed in the following two stages: from the usual melting temperature (about 700°C) of each example to the liquidus temperature (approximately The same about 650°C...

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Abstract

An Al-Mg-Si aluminum-base alloy sheet which is inhibited at high repeatability from forming ridging marks in press forming even when the forming conditions are more severe. The aluminum-base alloy sheet has a specific composition and has, in the sheet widthwise direction in a relatively wide area, a texture wherein the Goss and Cube orientation components are reduced in terms of average area fraction in the sheet widthwise direction and the variations of Goss and Cube orientation components in the texture are reduced in terms of difference between the maximum and minimum area fractions in the sheet widthwise direction. Thus, the aluminum alloy sheet is inhibited from forming uneven ridging marks having a relatively large period in the sheet widthwise direction on the surface of the sheet.

Description

technical field [0001] The present invention relates to an aluminum alloy sheet, particularly an aluminum alloy sheet (hereinafter, aluminum is also simply referred to as Al) excellent in ridging mark resistance. Here, the aluminum alloy plate excellent in wrinkle resistance means Al-Mg-Al that can suppress surface irregularities (also called wrinkle and rope-like (roping) marks) that occur when the panel is extruded. Si series aluminum alloy plate. The aluminum alloy plate referred to in the present invention means a plate subjected to tempering such as solution treatment and quenching treatment after rolling, and is a plate before being processed into a panel by extrusion molding or the like. Background technique [0002] In recent years, in response to global environmental problems caused by exhaust gas and the like, improvements in fuel consumption by reducing the weight of the bodies of transportation machines such as automobiles have been sought after. Therefore, esp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C21/06C22F1/05C22F1/00
CPCC22C21/06C22F1/05C22C21/02
Inventor 有贺康博松本克史长尾护
Owner KOBE STEEL LTD
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