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Method for coating visible surface of motor vehicle wheel rims

A motor vehicle and coating technology, which is applied to the device for coating liquid on the surface, wheels, special surfaces, etc., can solve the problems of electrochemical precipitation and other problems

Pending Publication Date: 2020-07-28
B 库查斯卡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as described in these publications, electrochemical precipitation of metal particles on substrates or their coatings is problematic in terms of environmental pollution and disposal costs

Method used

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  • Method for coating visible surface of motor vehicle wheel rims

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Embodiment Construction

[0016] In the figures, the substrate to be coated, in this case a vehicle wheel rim made of aluminum or steel, is marked with the reference letter S.

[0017] In order to carry out the method proposed by the invention, the surface of the substrate S to be coated is first prepared, ie as smooth and clean as possible, by usual mechanical methods.

[0018] Then, by using generally known methods, with or without chemical pretreatment, a polymeric primer layer A is applied to this surface of the substrate, which layer compensates for any unevenness that may be caused by mechanical processing. The polymer base coat A contains a sufficient amount of filler to smooth out any roughness on the metal surface of the substrate.

[0019] Subsequently, a high-gloss powder coating as described in publication DE 3143060C2 to form a polymeric intermediate layer B is then applied on the surface of this polymer base coat A. Most importantly, the surface of the polymeric interlayer B does have a ...

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Abstract

The invention relates to a method for coating motor vehicle wheel rims, in which a polymer priming layer (A), a polymer intermediate layer (B), a decorative layer (C) consisting of a heat-cured polymer layer with embedded flake-like metal pigments covering the visible surface of the decorative layer (C), and finally a polymer cover layer (D) are consecutively applied to the metal surface of the wheel rim. According to the invention, in order to develop this method such that the coated wheel rims achieve the appearance of polished metal without substantial extra costs, the polymer intermediatelayer (B) is produced with a high-gloss surface and the decorative layer (C) is applied to the high-gloss surface of the polymer intermediate layer (B) in the wet spraying method with a layer thickness of max. 2 [mu]m, where it is dried at ambient temperature and, before the application of the polymer cover layer (D), it is fixed to the polymer intermediate layer (B) via a thermal post-treatment in such a way that it adheres to the surface thereof with a cross-cut pull-off strength (according to DIN EN ISO 2409) of Gt=0 to Gt=2.

Description

technical field [0001] The invention relates to a method for coating the visible surface of a motor vehicle rim made of aluminum or steel, wherein first a polymer base layer (A) is applied to the machined metal surface of the rim, said layer compensating for the mechanical processing irregularities, subsequently applying an intermediate polymer layer (B) to the surface of the polymer base layer (A), and then applying a decorative layer (C) to the surface of the polymer intermediate layer (B), said The decorative layer (C) consists of a thermosetting polymer layer and embedded flake-like metallic pigments covering the visible surface of the decorative layer (C), the surface of which is finally covered with a polymeric top layer (D). Background technique [0002] Such a method is known, for example, from EP 2 123 366 A1. [0003] Insofar as this patent application refers to polymer coatings or layers, it means all paint coatings commonly used in automotive engineering whose p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/06B05D7/00B05D3/02C09D5/29C09D5/36C09D5/38B60B7/00
CPCB05D5/068B05D7/574B05D7/576B05D3/0254B05D2202/00B05D2601/08B05D2601/10B60B2900/572B05D1/02B05D5/067B05D2202/10B05D2202/25B05D2601/02
Inventor B·库查斯卡
Owner B 库查斯卡