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Aluminum alloy plate

An aluminum alloy plate, quality technology, applied in the direction of metal rolling, etc., can solve the problems of reduced productivity and increased probability of edge cracks, and achieve the effect of suppressing edge cracks

Inactive Publication Date: 2018-04-06
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] However, if the strength of the aluminum alloy plate is high, the probability of occurrence of edge cracks during rolling increases, which may reduce productivity.

Method used

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  • Aluminum alloy plate

Examples

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Effect test

Embodiment

[0102] Next, about the aluminum alloy plate of this invention, the Example which satisfies the requirement of this invention is compared with the comparative example which does not satisfy the requirement of this invention, and it demonstrates concretely.

[0103] [Preparation of test material]

[0104]An aluminum alloy having a composition shown in Table 1 was melted, and an ingot (about 4 tons in weight) was produced by semi-continuous casting. Carry out homogenization heat treatment for the ingot (480°C for test materials 1-8, 12-19, 550°C for test materials 9, 10, and 20, 400°C for test material 11, and 380°C for test material 21. ℃, the test material 22 is 580 ℃). Then implement hot rolling (starting temperature: 400°C for test materials 1-8, 12-19, the same temperature as the soaking temperature for test materials 9-11, 20-22, end temperature: 330°C, starting plate thickness : 580mm, final plate thickness: 2mm), made into a hot-rolled plate. Thereafter, cold rolling w...

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Abstract

The purpose of the present invention is to provide an aluminum alloy sheet hard to separate a coating layer, providing high strength, and preventing the edge thereof from being broken when rolling. The aluminum alloy sheet according to the present invention includes at least one among 4.7-6.0 wt% of Mg, 0.20 wt% or less of Fe, 0.10 wt% or less of Si, 0.005-0.500 wt% of Cu, and 0.005-0.400 wt% of Zn. The total content of the Cu and Zn is 0.500 wt% or less. The remainder of the aluminum alloy sheet consists of Al and inevitable impurities. The aluminum alloy sheet includes 3.8 wt% or higher of solid Mg. An internal force of the aluminum alloy sheet is 250-400 Mpa.

Description

technical field [0001] The present invention relates to an aluminum alloy plate, and specifically relates to an aluminum alloy plate that can be used for structural members such as an inner chassis provided inside an electronic device. Background technique [0002] Although this applies to all electronic devices, among electronic devices, there is a great demand for reducing the weight of various mobile devices (portable devices) that are predicated on portability. [0003] Therefore, it has been proposed to replace the various components inside the electronic equipment composed of relatively heavy iron alloys with aluminum alloys, so as to reduce the weight of the entire electronic equipment. [0004] For example, Patent Document 1 proposes a material for conductive parts of electrical and electronic equipment characterized by containing Mg: 0.5 to 5.0% by weight, and the balance being Al and unavoidable impurities. [0005] prior art literature [0006] patent documents ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22C21/06C22F1/047
CPCC22C21/06C22C21/08C22F1/047B21B2003/001C22C1/026C22C21/10
Inventor 阿部智子金田大辅小林一德
Owner KOBE STEEL LTD
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