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Automobile hub coating film

A technology of automobile wheel hub and coating film, applied in the direction of wheels, coating, wheel cover plate, etc., can solve the problems of wheel hub being easily stained with dirt, affecting the life of the coating film, poor contact of the coating film, etc. The effect of prolonging the service life and increasing the yield rate

Inactive Publication Date: 2019-12-20
黄山五环科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the surface of the automobile wheel hub is mostly a rough casting surface, which leads to poor contact of the coating film and affects the life of the coating film. Moreover, the automobile wheel hub is the main load-bearing part of the automobile, which requires not only sufficient mechanical strength, but also sufficient toughness to The impact resistance is guaranteed, and the hub is easy to be stained with dirt. If it is not cleaned for a long time, it may be corroded and deformed, resulting in a safety hazard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A coating film for an automobile hub, comprising a hub body, characterized in that: the surface of the hub body is sequentially provided with a primer layer, an intermediate coating layer and a topcoat layer from the inside to the outside, and the primer layer, the intermediate coating layer and the topcoat layer The paint layers are all sprayed and formed by powder coating. The particle diameter of the powder is 30-45 microns. The thickness of the coating is sequentially greater than the thickness of the primer layer and the topcoat layer. The powder coating is mainly composed of anti-corrosion epoxy resin. The shape of the powder is spherical. The anti-corrosion epoxy resin The resin is prepared from bisphenol A, liquid caustic soda, excess epichlorohydrin and auxiliary materials. The liquid caustic is a mixed solution of sodium hydroxide aqueous solution, sodium chloride aqueous solution and water. The auxiliary agent It is an anticorrosion agent, film forming agent,...

Embodiment 2

[0022] A coating film for an automobile hub, comprising a hub body, characterized in that: the surface of the hub body is sequentially provided with a primer layer, an intermediate coating layer and a topcoat layer from the inside to the outside, and the primer layer, the intermediate coating layer and the topcoat layer The paint layers are all sprayed and formed by powder coating. The particle diameter of the powder is 30-45 microns. The thickness of the coating is sequentially greater than the thickness of the primer layer and the topcoat layer. The powder coating is mainly composed of anti-corrosion epoxy resin. The shape of the powder is spherical. The anti-corrosion epoxy resin The resin is prepared from bisphenol A, liquid caustic soda, excess epichlorohydrin and auxiliary materials. The liquid caustic is a mixed solution of sodium hydroxide aqueous solution, sodium chloride aqueous solution and water. The auxiliary agent It is an anticorrosion agent, film forming agent,...

Embodiment 3

[0024]A coating film for an automobile hub, comprising a hub body, characterized in that: the surface of the hub body is sequentially provided with a primer layer, an intermediate coating layer and a topcoat layer from the inside to the outside, and the primer layer, the intermediate coating layer and the topcoat layer The paint layers are all sprayed and formed by powder coating. The particle diameter of the powder is 30-45 microns. The thickness of the coating is sequentially greater than the thickness of the primer layer and the topcoat layer. The powder coating is mainly composed of anti-corrosion epoxy resin. The shape of the powder is spherical. The anti-corrosion epoxy resin The resin is prepared from bisphenol A, liquid caustic soda, excess epichlorohydrin and auxiliary materials. The liquid caustic is a mixed solution of sodium hydroxide aqueous solution, sodium chloride aqueous solution and water. The auxiliary agent It is an anticorrosion agent, film forming agent, ...

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Abstract

The invention discloses an automobile hub coating film, which comprises a hub body, wherein the surface of the hub body is provided with a primer layer, a middle coating and a finish paint layer frominside to outside in sequence; the primer layer, the middle coating and the finish paint layer are all in spraying and forming arrangement by powder paint; the grain diameter of the powder is 30-45 micrometers, a leveling rate and a powdering rate can be balanced, and surface properties, including coating film gloss, plumpness and the like, are excellent; the powder grain diameter of the finish paint layer is greater than the powder grain diameter of the middle coating and the powder grain diameter of the primer layer in sequence; and the thickness of the middle coating is greater than the thickness of the primer layer and the thickness of the finish paint layer in sequence. By use of a powder paint way, the omission of a base colored paint for automobile hub painting becomes a new development direction, so that the emission of VOCs (Volatile Organic Compounds) in a whole painting process is lowered by about 20% according to the characteristic of zero VOC of the powder paint, paintingworking procedures are reduced, efficiency is improved, a yield is improved, and cost is lowered.

Description

technical field [0001] The invention relates to the technical field of automobile wheel hub protection, in particular to an automobile wheel hub coating film. Background technique [0002] The hub (Car Rim) is the part where the axle is installed in the center of the wheel, which is what people often call "rim" or "steel ring". Therefore, the choice of coating film on the surface of the wheel hub is particularly important. In addition to good surface quality and workability, the coating film on the surface of the wheel hub also needs excellent mechanical properties, good horizontal fluidity, salt spray resistance and weather resistance. [0003] However, the surface of the automobile wheel hub is mostly a rough casting surface, which leads to poor contact of the coating film and affects the life of the coating film. Moreover, the automobile wheel hub is the main load-bearing part of the automobile, which requires not only sufficient mechanical strength, but also sufficient t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60B7/00C09D163/00C09D5/08C09D5/03
CPCB60B7/0046C09D5/033C09D5/08C09D163/00
Inventor 汪年华罗乐平程殿辉王永垒江蓉
Owner 黄山五环科技有限公司
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