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Aluminum wheel coating method and aluminum wheel

A coating method and technology for aluminum alloys, which are applied in chemical instruments and methods, metal material coating processes, and devices for coating liquids on surfaces, etc. and other problems, to achieve excellent anti-corrosion effect

Active Publication Date: 2013-09-11
นิปปอน เพนท์ ออโตโมทีฟ โคทติ้งส์ โค แอลทีดี +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, even with the method of forming a coating film obtained by using the coating composition described in any of the patent documents, the deterioration of the coating film caused by salt damage cannot be completely suppressed. The coating film cannot meet the corrosion resistance under severe service conditions

Method used

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  • Aluminum wheel coating method and aluminum wheel
  • Aluminum wheel coating method and aluminum wheel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0072] Hereinafter, the present invention will be described with reference to examples, but the present invention is not limited by these examples.

[0073] [Manufacturing method of anticorrosion coating composition]

[0074] Prepare a solvent obtained by mixing a hydrocarbon solvent / alcohol solvent / ester solvent (hereinafter referred to simply as a mixed solvent) at the compounding ratio (parts by mass) described in Table 1. The acrylic resin, powdered silica, and mixed solvent are expressed as Mix in the ratio described in 1, and disperse the powdered silica to a fineness meter of 5 μm or less by a batch disperser using glass beads (JIS K-5600-2-5). The dispersion was taken out into another container, and the epoxy resin varnish was added according to Table 1 while stirring, and then the crosslinkable polymer particle solution and additives were added in the same manner to prepare each anticorrosion coating composition.

[0075] [Table 1]

[0076]

[0077] The numerical...

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Abstract

The invention provides a wheel coating method that uses a coating composition that can form a coating film having anticorrosive properties that can prevent corrosion even with use in areas where salt damage is easily incurred and having superior beauty characteristics. In the aluminum wheel coating method, an anticorrosive coating composition is applied onto the aluminum wheel, and thereafter, a clear coating composition is applied to form a transparent multilayer coating film. The anticorrosive coating composition for the aluminum wheel coating method contains an acrylic resin (1), which has a mass average molecular weight of 50,000 - 140,000, a glass transition point of 20 - 50 DEG C, hydroxyl value of 10 - 50 mg KOH / g, and acid value of 10 - 40 mg KOH / g, and an epoxy resin (2) having an epoxy equivalent of 210 - 1000 g / eq. The anticorrosive coating composition contains 5 - 20 parts by mass in a solid part conversion of the epoxy resin (2) to 100 parts by mass of the solid portion of the acrylic resin (1).

Description

technical field [0001] The present invention relates to a coating method for an aluminum alloy rim and an aluminum alloy rim obtained by the coating method. Background technique [0002] In general, an aluminum alloy rim is obtained by a shot peening process in which small pieces of metal such as stainless steel are sprayed on an aluminum alloy formed by casting, forging, or the like, and then necessary parts are cut. [0003] The aluminum alloy rim subjected to such processing is further subjected to chemical conversion treatment, and then the entire surface or a part thereof is coated for imparting corrosion resistance, aesthetics, and weather resistance. Since aluminum alloy rims require a high level of aesthetics and corrosion resistance under severe conditions of use, studies have been conducted to obtain excellent appearance and high corrosion performance for such a coating. [0004] Especially in coastal areas where it is easy to come into contact with the salt of se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B32B15/20B60B7/00C09D5/00C09D5/08C09D133/04C09D163/00C23F11/00
CPCB05D7/53B60B23/04B60B23/10B60B25/20C09D163/00B05D2502/00B05D2504/00B05D7/14C09D5/08B05D2202/25C08K3/36C09D133/08C23C22/361B82Y30/00B05D2420/01B05D7/16C09D163/04B60B19/00
Inventor 植村纯哉清水彻村上浩司小栗立也前田雅史
Owner นิปปอน เพนท์ ออโตโมทีฟ โคทติ้งส์ โค แอลทีดี
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