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Aluminum member and method for producing same

A manufacturing method and technology for components, which are applied in anodizing, electrolytic coatings, surface reaction electrolytic coatings, etc., can solve problems such as difficulty in achieving opaque white hues

Pending Publication Date: 2021-07-30
FURUKAWA SKY ALUMINUM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional dyeing and tinting methods used in anodizing of aluminum components make it difficult to achieve such shades as opaque white

Method used

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  • Aluminum member and method for producing same
  • Aluminum member and method for producing same
  • Aluminum member and method for producing same

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Embodiment

[0058] Hereinafter, the present invention will be described in detail based on examples. In addition, this invention is not limited to the example shown below, The structure can be changed suitably within the range which does not destroy the gist of this invention.

[0059] Prepare base metals formed of aluminum alloys shown in Tables 1 and 2 below, anodize the base metals under the conditions shown in Tables 1 and 2, and manufacture Examples 1-34 and Comparative Examples 2-8. Aluminum components. On the other hand, in Comparative Example 1, the base material was not anodized. In addition, "1100" described as the type of base material alloy in Table 1 is a 1000-series aluminum alloy, "5052" is a 5000-series aluminum alloy, and "6063" is a 6000-series aluminum alloy. In addition, as basic treatment, alkali degreasing was performed using 5% by mass NaOH, chemical grinding was performed using a solution of phosphoric acid and sulfuric acid mixed at a volume ratio of 7:3, mechan...

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Abstract

The purpose of the present invention is to provide an aluminum member that is obtained by simpler primary treatment than in the past and that has high whiteness and suppressed unevenness of white color, and a method for producing the same. The aluminum member according to the present invention has a base material made of aluminum or an aluminum alloy, and an anodized film on the surface of the base material. The aluminum member, measured from the anodized-film-surface side, has an arithmetic average roughness Ra of 0.1 [mu]m or higher, a roughness curve element average length RSm of 10 [mu]m or less, and a Hunter whiteness of 60-90.

Description

technical field [0001] The present invention relates to an aluminum member and a manufacturing method thereof, and in particular to an aluminum member having high whiteness and suppressed white spots and a manufacturing method thereof, which can be obtained through simple one-time processing without requiring complicated steps such as secondary treatment. Background technique [0002] Opaque white aluminum members are expected to be used in applications requiring lightweight and good design, such as building materials and electronic equipment housings. However, conventional dyeing and tinting methods applied in anodizing of aluminum components make it difficult to achieve such a hue as opaque white. Therefore, how to manufacture aluminum-based materials with an opaque white color has been studied. [0003] Patent Document 1 discloses a method in which an aluminum member having a white surface is produced by changing the film structure by performing porous-type anodization w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/04C25D11/06
CPCC25D11/04C25D11/16C25D11/08C25D11/10C25D11/06C25D11/14B32B15/016
Inventor 深津明弘布村顺司
Owner FURUKAWA SKY ALUMINUM CORP