Self-cleaning high-corrosion-resistance plating layer steel plate and preparation method thereof

A self-cleaning and coating technology, applied in chemical instruments and methods, coatings, layered products, etc., can solve the problems of no industrial value, unstable crystal form, etc., and achieve concise process steps and good corrosion resistance. Effect

Inactive Publication Date: 2013-01-09
CHANGSHU HUAYE STEEL STRIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Brookite is relatively rare in nature, and its crystal form is unstable. It will transform into rutile at around 650°C, so it has no industrial value.

Method used

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  • Self-cleaning high-corrosion-resistance plating layer steel plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] figure 1 The preparation method of the self-cleaning high corrosion-resistant coating steel plate of the shown structure comprises the following steps:

[0026] A) Steel plate cleaning, choose cold-rolled steel plate, the thickness of cold-rolled steel plate does not need to be limited in this embodiment, because it can usually be carried out in specifications with a thickness of 0.1-4.5 mm according to user requirements and / or different places of use Selection, after the cold-rolled steel plate is selected, the surfaces on both sides are cleaned with a disk brush, and then alkaline cleaning and electrolytic cleaning are performed to remove the surface oxide layer and / or oil stains, etc. After cleaning, the cold-rolled steel plate is guided through a drying tunnel to dry to obtain Substrate 1;

[0027] B) Plating, using the dipping and pulling method to apply the structural layer material to the outward-facing side surface of the substrate 1 obtained in step A) ...

Embodiment 2

[0031] A) steel plate cleaning, select cold-rolled steel plate, after the cold-rolled steel plate is selected, carry out disk cleaning, pickling and electrolytic cleaning on both sides of the cold-rolled steel plate, after cleaning, guide the cold-rolled steel plate through the drying tunnel to dry, and obtain the substrate 1;

[0032] B) Plating, the thickness of the first and second structural layers 2 and 3 is 55 μm, and the materials of the first and second structural layers 2 and 3 are binary materials, and the binary materials are aluminum zinc, of which: aluminum The mass percentage is 55%, and the mass percentage of zinc is 45%. The aluminum-zinc binary material is melted in the plating pot, and when the substrate 1 passes through the plating pot in the state of dipping and pulling, it adheres to the inside and outside of the substrate 1 surface;

[0033] C) Passivation, using a roller coating method to apply a trivalent chromium solution with a mass concentratio...

Embodiment 3

[0036] A) steel plate cleaning, select cold-rolled steel plate, after the cold-rolled steel plate is selected, carry out alkali cleaning and electrolytic cleaning on both sides of the cold-rolled steel plate, after cleaning, guide the cold-rolled steel plate through the drying tunnel to dry, and obtain the substrate 1;

[0037] B) Plating, the thickness of the first and second structural layers 2 and 3 is 4 μm, and the materials of the first and second structural layers 2 and 3 are all one-component materials, and the one-component material is zinc. When the substrate 1 is dipped and pulled When passing through the plating pot in the state, it adheres to the inner and outer surfaces of the substrate 1;

[0038] C) Passivation, using a roller coating method to apply a trivalent chromium solution with a mass concentration of 22g / L as a passivating agent to the surface of the first structural layer 2 at room temperature, and after passivation, it enters the The drying tunne...

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Abstract

The invention provides a self-cleaning high-corrosion-resistance plating layer steel plate and a preparation method thereof, belonging to the technical field of a coating layer steel plate. The steel plate comprises a base plate, a first structure layer in combination with the surface of one outward side of the base plate when in use and a second structure layer in combination with the surface of one inward side of the base plate when in use. The steel plate is characterized in that the surface of the first structure layer is combined with a passivation layer, and the surface of the passivation layer is combined with a self-cleaning layer. The preparation method comprises the following steps of: selecting and cleaning a cold-roll steel plate, and drying after cleaning to obtain the base plate; coating a structure layer material on the surface of one side of the base plate to from a first structure layer, and coating the structure layer material on the surface of the other side of the base plate to from a second structure layer; passivating the surface of the first structure layer by a passivant, and drying after passivating; and coating the self-cleaning sol onto the surface of the passivation layer, and calcining and curing. The steel plate disclosed by the invention has the advantages of good corrosion resistance effect, ideal self-cleaning effect and succinct processing steps, and is capable of guaranteeing the self-cleaning and corrosion-resistant effects.

Description

technical field [0001] The invention belongs to the technical field of coated steel plates, and in particular relates to a self-cleaning high-corrosion-resistant coated steel plate, and also relates to a preparation method thereof. Background technique [0002] Coated steel sheets are widely used in exterior walls of buildings, standard factory buildings, garages, solar water heaters, traffic signs, vehicles ( Such as automobile mufflers) and various mechanical equipment, etc. However, the appearance and corrosion resistance of the coated steel plate used in outdoor occasions are affected by the pollution of dust and oily smoke in the atmosphere, especially when this kind of steel plate is used in high-rise buildings, it is often difficult to clean it with rainwater , and manual cleaning is not only difficult, but also difficult to guarantee safety. Therefore, the maintenance of the coated steel plate has been perplexing the industry for a long time, and there is no techni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/04C23C22/73B05D3/02B05D7/14
Inventor 李丽陆卫明王海英姚天宇沈方林
Owner CHANGSHU HUAYE STEEL STRIP
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