Method for making enamel steel plate
A manufacturing method and enamel technology, which are applied in the field of manufacturing enamel steel plates, can solve the problems such as the elimination of "orange peel" and the increase of bubble defects in the enamel color blackened enamel layer that have not yet been found.
Inactive Publication Date: 2003-08-27
JFE METAL PROD & ENG INC
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Problems solved by technology
However, if the slurry containing such organic substances is fired, it will have a bad influence on the characteristics of the enamel itself, such as blackening of the enamel color, increase of bubble defects in the enamel layer, etc.
[0005] In the traditional enamelled steel sheet manufacturing process, no examples have been found that reveal the technology to eliminate "orange peel"
Method used
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Embodiment
[0032] Hereinafter, the present invention will be specifically described based on Examples and Comparative Examples of the present invention. Invention examples 1 to 8 of the first invention
[0033] Prepare such a nickel-plated steel plate, that is, on both sides of a 0.6mm thick common steel plate, the amount of nickel plating on both sides is 100mg / m 2 Nickel plating layer, and degreasing and alkali etching treatment.
[0034] Then, spray the bottom slurry with the composition shown in Table 1 to form a wet film with a thickness of about 50 μm. After coating the slurry on the nickel-plated steel plate, bake it at 810 ° C for 2 minutes in an electric furnace to obtain a bottom enameled steel plate.
[0035] Add the surfactant shown in Table 3 (Nissin Chemical Industry "Safinol 465 (Sa-Fino-Lu 465)") and water for adjusting the specific gravity to the surface slurry with the ingredients shown in Table 2, Coating slurries having the static surface tension and apparent viscos...
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Abstract
The objective of the present invention is to provide a cheap method for making enamel steel plate which exhibits its own excellent properties such as rigidity, weathering resistance, washing, heat resistance, incombustibility, anti-corrosion, drug resistance and appearance and has very smooth enamel surfaces in a practical application. Specifically, said method used for manufacturing enamal steel plates comprises a working procedure that the a paste used for enamel with a static state surface tension lower than 50 dyne / cm and an apparent viscidity of 500 mPa dot s (a rotating velocity of 100 rpm) by a E type viscometer is sprayed and smeared at the base material surface by a sprayer and is then roasted. Furthermore, said method is also characterized in that the paste used for enamel at the base material surface, during or after the coating course, is kept in a flowing state to vibrate the base material steel plate, during the working procedure that the base material surface is coated with a paste used for enamel through a sprayer.
Description
technical field [0001] The present invention relates to a method for manufacturing an enamelled steel plate. In particular, the present invention relates to a method of manufacturing an enamelled steel sheet that is very suitable for sign boards, blackboards, tunnel interior materials, building interior materials, and exterior materials with smooth surfaces. Background technique [0002] Enameled steel sheet is a product that provides functions such as anti-corrosion, chemical resistance, weather resistance, and appearance by forming an enamel layer on the surface of the steel plate base material, and improves the life of the steel plate. Compared with painted steel plates, enamelled steel plates have excellent qualities in terms of hardness, weather resistance, washability, heat resistance, and non-combustibility. However, unevenness occurs on the surface of the enamel layer. It's called "orange peel" because of the bump's appearance that resembles orange peel. The surfa...
Claims
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IPC IPC(8): C23D5/00C23D5/02
CPCC23D5/02
Inventor 林和裕田口正男福岛康雅高木正人野间新市
Owner JFE METAL PROD & ENG INC