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Aluminum alloy with excellent decorativeness

An aluminum alloy and decorative technology, applied in the field of aluminum alloys, can solve the problems of poor metal luster and reduced mechanical properties of color zipper elements, and achieve the effects of good corrosion resistance, stress corrosion resistance and good mechanical properties.

Inactive Publication Date: 2004-08-25
YKK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the existing aluminum alloy (such as JIS 5183) is subjected to electrochemical surface treatment, the metallic luster of the obtained colored zipper element is relatively poor, and when the alloy composition is adjusted or when the existing aluminum alloy (such as JIS 5052, 5056 or 5154) in order to emphasize the metallic luster, will reduce the mechanical properties required for this application, especially the strength

Method used

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  • Aluminum alloy with excellent decorativeness
  • Aluminum alloy with excellent decorativeness
  • Aluminum alloy with excellent decorativeness

Examples

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example 1

[0045] An aluminum alloy billet (40 mm diameter) having the composition shown in the left column of Table 1 was cast, homogenized, and then directly extruded through an extruder to produce an extruded rod with a diameter of 8 mm. This extruded rod was used as an experimental material, and cold workability was evaluated. Also, the extruded rod was rolled to a thickness of 1.36 mm at room temperature and annealed, then rolled to a thickness of 0.22 mm at room temperature, and then the surface passivation aluminum (anodized oxide film ) hardness and hue. Also, continuous casting was performed for the compositions given in the left column of Table 1, and hot workability was evaluated by performing hot rolling immediately after casting. The same evaluation was also performed for a normal material (comparative material).

[0046] These results are given in the right column of Table 1.

[0047] No.*1

Al alloy composition (mass%)

Hardness

cold workabil...

example 2

[0087] Produced as figure 1and 2 Zipper parts shown. As shown in Table 2, the strength of the zipper is better than that of the zipper of ordinary materials. Also, the anodized oxide film is transparent and has a high L* value, so it can be dyed for a good decorative appearance. Ordinary materials having the same strength as the material of the present invention have lower L* values ​​and therefore have poorer decorative properties. F-strength is a measurement of the element pull-out strength of an element that has been secured to a zipper tape.

[0088]

[0089] The aluminum alloy of the present invention has the strength, hardness and other mechanical properties required for its target use, and also has good metallic luster, so that the aluminum alloy has a prominent decorative property. The alloy is particularly useful when used in zipper elements, stops, sliders, pull tabs and other structural components of zippers or in snaps, common buttons and various type...

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Abstract

An aluminum alloy with excellent decorativeness, having a composition represented by the general formula AlaMgbMncCrd, wherein b, c, and d are, in mass percentage, 3.0<=b<=5.6, 0.05<=c<=1.0, 0.05<=d<=0.7, c+d>0.2, and a is the balance with unavoidable impurity elements possibly being contained, wherein a matrix of the aluminum alloy is a structure substantially composed of an aluminum solid solution, in which no beta-phase is present. This alloy has excellent decorativeness and decorativeness as well as superior strength, hardness and other such mechanical properties and is useful as materials for slide fastener constituent members, such as their elements, stops, and sliders, and / or in snap buttons, ordinary buttons, and clasps.

Description

technical field [0001] The present invention relates to an aluminum alloy with good decorative properties, which is used, for example, for structural parts of zippers, such as elements, stoppers, sliders and pull tabs of zippers, and which can be used for fastener products such as Snaps, plain buttons and various clips. Background technique [0002] For example, the structural components of zippers have until now been primarily made of copper alloys, including copper, brass, other copper-zinc alloys, nickel silver, and other copper-zinc-nickel alloys. The color of these alloys (be it copper, gold or silver) is determined by the materials used. In recent years, the use of zippers requires them to have a beautiful appearance, and therefore, various colors are required for the structural parts of the zippers. [0003] For example, a slide fastener having various colors is disclosed in Japanese Utility Model Registration No. 2587180, in which elements (teeth) made of aluminum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A44B1/02A44B1/04A44B19/02A44B19/26C22C21/00C22C21/06C22F1/00C22F1/04C25D11/04
CPCC22C21/06E02B11/005
Inventor 川添正孝见角幸一若狭裕信古里太明和优介
Owner YKK CORP
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