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Paint-applying method for car body

A technology for automobiles and car bodies, applied in chemical instruments and methods, devices for coating liquids on surfaces, coatings, etc., can solve problems such as failure to achieve design, difficult safety management, and difficulty in recycling coating films.

Inactive Publication Date: 2003-12-10
KANSAI PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that aluminum-based automobile body parts cannot be painted with excellent appearance and excellent performance even if they are painted with conventional painting methods.
However, it is troublesome to choose the most suitable coating method for direct coating on the car body, and it is difficult to obtain a uniform coating film thickness, and coating defects (lifting, condensation, garbage, etc.) are prone to occur when coating is used, and the consumption of paint exceeds The amount necessary for finishing is difficult to manage safely in terms of the working environment and safety and sanitation of the painting, and it is also difficult to recycle the painted film. From the perspective of polluting the environment, it is extremely unsatisfactory. Since it is generally sprayed, it may not meet the design According to the above requirements, the finishing process forms a plane and lacks a three-dimensional effect

Method used

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  • Paint-applying method for car body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0242] After degreasing and cleaning the 0.8mm thick aluminum plate (JIS A6061), the surface was treated with a zinc phosphate treatment agent, and then, the cationic electrodeposition coating ELECRON GT-10 (manufactured by Kansai Paint Co., Ltd., Blocked polyisocyanate curable epoxy resin electrodeposition paint), fired at 170°C for 20 minutes, to obtain an electrodeposition painted plate with a dry film thickness of about 20 μm. On the electrodeposition coated surface, the following thermosetting water-based intermediate coating was sprayed to form a 30 μm thick film, and fired at 140° C. for 20 minutes. Then, spray a heat-curing top coat (manufactured by Kansai Paint Co., Ltd., NEOAMILAC #6000 white, organic solvent system) to form a dry film with a thickness of about 30 μm, and dry it with a dryer at 140° C. for 20 minutes to obtain each test panel .

Embodiment 2～26

[0244] According to the method described in Tables 1 and 2, the painted boards of Examples 2-26 were produced.

Embodiment 27～38

[0246] After degreasing and cleaning the 0.8mm thick aluminum plate (JIS A6061), it is treated with a zinc phosphate treatment agent to obtain a surface-treated aluminum material, and the surface of the zinc-iron alloyed hot-dip galvanized steel sheet is treated with a zinc phosphate treatment agent. A surface-treated plate was obtained, and the following cationic electrodeposition paint was painted to a thickness of 20 μm. After washing with water, it was fired at 170° C. for 20 minutes to obtain a painted steel plate. The two plates are welded so that the painted surfaces of the aluminum material and the steel plate painted according to the following procedure are in the same direction, and then the two surfaces of the aluminum material and the steel plate are painted according to the finishing conditions recorded in Tables 1 and 2.

[0247] In Tables 1 and 2, the aluminum oxide film treatment was carried out as follows.

[0248] condition

[0249] cond...

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Abstract

In an external plate part and / or an internal plate part of the body of an automobile of which the main material is constituted of an aluminum material, an aluminum-coated steel material or a heterogeneous metal material being a combination of the aluminum material with a steel material, the relative roughness of the aluminum material is 0.2 [mu]m or below in Ra, while the aluminum material is a base material of a JIS A6000 series aluminum alloy and is subjected to oxide film coating treatment, and the film decorative film material is stuck to the surface of the aluminum material or the aluminum-coated steel material, according to this method of sticking the decorative film material to the body of the automobile, which is excellent in finish properties and a performance.

Description

technical field [0001] The present invention relates to a coating method for obtaining excellent coating film appearance such as brightness and smoothness of the coating film, corrosion resistance and processability, etc., in an automobile body coating method partially or entirely made of aluminum material or oxide film-treated aluminum material. A method of coating an automobile body with a film. [0002] The present invention relates to an automobile body outer panel part and / or inner panel part composed of an aluminum material, an aluminum material coated steel material, or a dissimilar metal material combined with an aluminum material and a steel material, by coating the aluminum material or the aluminum material on the surface of the steel material , Pasting decorative film materials, forming an excellent appearance such as brightness and smoothness, and a coating method for coating films with excellent properties such as corrosion resistance and processability. technic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D1/00B05D3/10B05D7/00B29C63/02B29C63/48B32B15/08
CPCB05D7/586B05D1/007B05D3/102B05D7/14B05D7/50B05D7/546B05D7/577B05D7/582B05D7/587B05D2202/10B05D2202/25B32B15/08B32B2311/24C04B35/62821C04B2235/3427C04B2237/402
Inventor 中村茂须贝英生
Owner KANSAI PAINT CO LTD
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