A kind of preparation method of color steel plate

A technology of color steel plate and metal substrate, which is applied to the surface coating liquid device, pretreatment surface, spraying device, etc., which can solve the problems of uneven spraying paint, inconvenient clamping, and lack of paint spraying, etc., to achieve the goal of spraying paint The effect of uniform thickness, faster processing speed and increased stability

Active Publication Date: 2022-02-22
HANGZHOU ZHEJIANG UNIV JINGYI ELECTROMECHANICAL TECH ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing painting equipment used for the production of color steel plates has the following two problems. One is that it is inconvenient to clamp. During clamping, the clamps will cover part of the painted surface, resulting in spraying on some parts of the painted surface of the color steel plate. If the paint is not enough, it needs to be repainted twice, and the process is complicated
Moreover, the secondary touch-up painting is generally done manually, which will lead to the uneven thickness of the paint layer of this part of the manual painting and the thickness of the paint layer sprayed by the machine.
The second is that the uniform movement between the steel plate and the spray head cannot be effectively guaranteed, resulting in the problem of uneven spray paint
The above problems will seriously affect the production quality of color steel plates

Method used

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  • A kind of preparation method of color steel plate
  • A kind of preparation method of color steel plate
  • A kind of preparation method of color steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Please refer to Figure 1 to Figure 2 A preparation method for a color steel plate is shown, comprising the following steps:

[0049] S1: Obtain the metal substrate 10, and perform surface treatment on the surface of the metal substrate 10 to be painted; the surface treatment includes degreasing and cleaning the surface of the metal substrate 10, cleaning the scale layer, and passivating the surface to be painted to increase the metal The roughness of the surface of the substrate 10 improves the adhesion between the metal substrate 10 and the paint layer 30 . Wherein, the type of the metal substrate 10 is not particularly limited, and any base material generally used in the manufacturing process of the color steel plate can be used. For example, the metal substrate 10 may be a hot-dip galvanized sheet, an electro-galvanized sheet, a stainless steel sheet, or the like.

[0050] It should be noted that the surface treatment described in S1 includes cleaning the metal su...

Embodiment 2

[0073] Such as image 3 As shown, the structure of the color steel plate of this embodiment is basically the same as that of Embodiment 1, the difference is that the color steel plate of this embodiment is provided with a finishing paint 60 on the surface of S4.

[0074] It should be noted that the varnish 60 is incompatible with the UV metal coating solution 40 , and is a transparent non-yellowing varnish resistant to chemical corrosion and ultraviolet rays.

[0075] Based on the technical scheme that has used varnish 60, compare embodiment one and have following progress:

[0076] 1. T-bend: There is no cracking or peeling off of the surface film layer at the lower bend after the sample is continuously bent 3 times to reach 3T.

[0077] 2. MEK wiping: Use a rag soaked in liquid MEK solvent to wipe back and forth 100 times in the cleaned unit area, and the coating surface does not fall off.

Embodiment 3

[0079] Such as Figure 4 As shown, the color steel plate structure of this embodiment is basically the same as that of Embodiment 1, the difference is that the paint layer 30 in S2 is a single-layer paint that increases the adhesion of the pattern layer 50 and provides a base color for the pattern layer 50 , and the thickness of the single-layer paint is 25 μm.

[0080] It should be noted that in this embodiment, the surface-treated metal substrate 10 is directly coated with a colored paint layer 30 after drying, and the paint layer 30 is dried after the roller coating is completed. Or spray the UV optical adhesive and then roll the paint layer 30 .

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Abstract

The invention relates to a preparation method and production equipment of a color steel plate. The preparation method includes the following steps: S1: obtaining a metal substrate, and performing surface treatment on the surface of the metal substrate to be painted; S2: setting a paint layer on the painted surface of the metal substrate; S3: Set UV metal coating liquid on the surface of the paint layer, the UV metal coating liquid contains acrylic resin and n-butyl acetate; S4: Use digital jet printing to make a pattern layer on the UV metal coating liquid to form a color Steel plate, which can effectively increase the adhesion of the pattern layer, and the performance of the entire coating against cracking and separation from the metal substrate; the color steel plate production equipment is used for the paint spraying process of the color steel plate, and the color steel plate production equipment is used to spray paint the steel plate When the steel plate to be painted moves in a straight line at a constant speed, it is evenly sprayed with paint, and the thickness of the paint is uniform, which is conducive to the smooth progress of the subsequent process, and there will be no problem affecting the production quality of the color steel plate due to the uneven paint surface of the steel plate.

Description

technical field [0001] The invention relates to the technical field of processing color steel plates, in particular to a preparation method of color steel plates. Background technique [0002] Color steel plate, also known as color coated steel plate, is traditionally produced by coating or pressing organic paint or colored plastic film on the steel plate on a continuous production line. The material of the steel plate can be galvanized sheet, cold-rolled sheet, stainless steel or aluminum-plated sheet, etc. Color steel plate not only has the mechanical strength of ordinary steel plate, but also can improve the corrosion resistance. By using different colors of paint and different embossed plastic films, appearances such as wood grain, marble grain, metal texture, cloth texture, leather texture, etc. can be made. In the cupping test of the color steel plate in the prior art, when the sample is slowly stretched to 3 to 4mm, the surface of the film layer begins to fall off, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05B13/02B05D1/02B05D3/00B05D1/38B05D7/16B05D7/24
CPCB05B13/0221B05D1/02B05D7/16B05D7/24B05D7/584B05D7/586B05D3/002B05D3/007
Inventor 王杭凯吕福在唐志峰
Owner HANGZHOU ZHEJIANG UNIV JINGYI ELECTROMECHANICAL TECH ENG
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