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Method for processing steel plate with colorful coating layer and transfer device used by the method

A processing method and color coating technology, which can be applied to the device, printing device, coating and other directions for coating liquid on the surface, which can solve the problems of shrinkage, aesthetic requirements, outdated pursuit of decorative effect, and restriction of market demand for color steel plates.

Active Publication Date: 2009-04-15
CHANGSHU HUAYE STEEL STRIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, the current coated steel plate with only a single color effect is outdated compared to people's pursuit of product aesthetics and decorative effects. Due to the monotonous decorative effect, the market demand for color steel plates is restricted and even tends to shrink.
[0003] The applicant has searched, and there is no technical solution for imparting more than one color to the surface of the steel plate in the literature, especially in the Chinese patent literature

Method used

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  • Method for processing steel plate with colorful coating layer and transfer device used by the method
  • Method for processing steel plate with colorful coating layer and transfer device used by the method
  • Method for processing steel plate with colorful coating layer and transfer device used by the method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Take the processing of the steel plate 20 with two different colors as an example.

[0035] A) Uncoiling the galvanized steel sheet, specifically opening the previously coiled galvanized steel sheet;

[0036] B) Pretreatment, chemical treatment is carried out on the galvanized steel sheet after uncoiling. Specifically, the galvanized steel sheet is first introduced into a chemical cleaning tank to wash away the dust, marks and even oil stains remaining on the surface of the galvanized steel sheet, so that the galvanized steel sheet The surface of the galvanized steel is fully cleaned, and then dried after cleaning. The drying temperature is from room temperature to 60°C. If the galvanized steel sheet travels fast, the drying temperature will increase accordingly, and vice versa. Usually, the galvanized steel sheet 20 is controlled. Speed ​​is 35-60m / min, the present embodiment selects 35m / min, then carries out passivation treatment, the mechanism of passivation treatmen...

Embodiment 2

[0043] Only change the traveling speed of the galvanized steel sheet in step B) to 60m / min, the passivation temperature is 135°C, and the steel sheet temperature is 70°C; change the baking temperature in step D) to 320°C, and the temperature of the steel sheet is 20°C at 225°C, the traveling speed of the steel plate 20 is changed to 60m / min; the number of transfers in step E) is changed to three times, that is, three sets of transfer printing devices of the present invention are arranged on the traveling channel of the steel plate 20, and each transfer After printing, the temperature of entering the baking furnace for baking is changed to 50°C, and the advancing speed of the steel plate 20 is changed to 60m / min to obtain a color coated steel sheet blank with three colors or patterns; the baking in step F) The temperature was changed to 300° C., the traveling speed of the steel plate 20 was changed to 60 m / min, and the rest were the same as described in Example 1 to obtain a col...

Embodiment 3

[0045] Only change the traveling speed of the galvanized steel sheet in step B) to 55m / min, the passivation temperature is 120°C, and the steel sheet temperature is 62°C; change the baking temperature in step D) to 410°C, and the temperature of the steel sheet is 20°C is 240°C, the advancing speed of the steel plate 20 is changed to 55m / min; the number of transfers in step E) is changed to four times, that is, four sets of transfer printing devices of the present invention are set on the advancing channel of the steel plate 20, and each time After transfer printing, the baking temperature in the baking oven is changed to 60°C, and the traveling speed of the steel plate 20 is changed to 55m / min; the baking temperature in step F) is changed to 405°C, and the traveling speed of the steel plate 20 is changed to 55m / min , and the rest are the same as those described in Example 1 to obtain a color-coated steel sheet with four sets of colors or four sets of patterns on one side of the...

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Abstract

The invention relates to a processing method for a colorful coating steel plate and a transfer printing device used by the method. The method comprises the following steps: uncoiling a steel plate to be coated; carrying out pretreatment, namely, carrying out the chemical treatment of the uncoiled steel plate after cleaning and drying the steel plate, and drying the steel plate again to obtain the steel plate to be coated; carrying out priming, namely priming the two surfaces of the steel plate to be coated; carrying out drying, namely roasting the primed steel plate in a baking furnace to obtain the steel plate for transfer printing; carrying out transfer printing, namely sending the steel plate for transfer printing into more than one set of transfer printing device for continuous transfer printing, and roasting the steel plate after each time of transfer printing so as to obtain a semi-finished product of the colorful coating steel plate which has the surfaces to be polished; and carrying out surface polishing, namely painting clear lacquer on the surfaces of the semi-finished product of the colorful coating steel plate, drying the steel plate, and coiling the steel plate after cooling down the steel plate to obtain the colorful coating steel plate which has more than one color or pattern on the surfaces. The processing method has the advantages that the obtained colorful coating steel plate has ideal beautification and decoration effects; and the recommended transfer printing device can ensure more than one colorful effect on the steel plate.

Description

technical field [0001] The invention belongs to the technical field of galvanized steel sheet production, and in particular relates to a method for processing a color-coated steel sheet, and also relates to a transfer printing device used in the method. Background technique [0002] The color coated steel plate in the prior art is to coat the finish paint of a single color on the same surface of the steel plate, such as coating a red finish paint, then making the steel plate appear as a red steel plate; Then the steel plate will be given a blue effect, and so on. The specific process steps are: uncoiling, pretreatment, painting, drying, varnish coating, drying, cooling and rewinding. The pretreatment is to chemically treat the surface of the steel plate, such as removing oil stains on the surface of the steel plate. Painting is to apply the required single-color paint to the surface of the steel plate by a paint roller, and then apply a transparent paint to the surface of t...

Claims

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Application Information

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IPC IPC(8): B05D1/36B05D5/06B05D3/02B05D3/06B05D3/12B41M1/28B41M7/00B41F16/00B41F23/04B41F35/00
Inventor 吕敬玖秦燕君
Owner CHANGSHU HUAYE STEEL STRIP
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