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A treatment solution for controlling the color of the rust layer on the surface of weathering steel and its treatment method

A treatment method and technology of weathering steel, applied in the direction of metal material coating process, etc., can solve the problems of unsustainable color, difficult large-scale components, unselectable, etc., and achieve the effect of beautiful color, uniform color of rust layer, and cost reduction

Active Publication Date: 2019-12-24
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the surface coating modification technology can play a beautifying effect in the early stage of weathering steel corrosion, it also has the disadvantages that the color is difficult to last and cannot be selected, and it consumes too much manpower and material resources, and it is difficult to be generally applicable to large components.

Method used

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  • A treatment solution for controlling the color of the rust layer on the surface of weathering steel and its treatment method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The present embodiment provides a kind of processing method of regulating and controlling the color treatment liquid of the rust layer on the surface of weathering steel, such as figure 1 As shown, the processing method includes the following steps:

[0053] 1) Surface cleaning of weathering steel: remove the scale on the surface of weathering steel by shot blasting or pickling, cut into 40mm×40mm weathering steel sheets, degrease with acetone, grind the experimental weathering steel to 600# with sandpaper, and finally use Clean with absolute ethanol and blow dry;

[0054] 2) Preparation of weather-resistant steel surface rust layer color treatment solution: the treatment solution includes a precursor solution and a corresponding stabilizing solution, and 500 g is prepared respectively according to their respective mass fractions to obtain a precursor solution and a corresponding stabilizing solution with uniform solute;

[0055] 3) Corrosion and coloring of weathering...

Embodiment 2

[0064] The processing method of this embodiment is basically the same as that of Embodiment 1, except that:

[0065] The precursor liquid is liquid B, and the corresponding stable liquid is liquid b.

[0066] The mass fraction of each component in the precursor liquid B is: 0.5% to 3.5% NaCl, 0.1% to 2% FeSO 4 , 0.1%~1%CuSO 4 , 0.1%~2%NaHSO 3 , and the balance is water.

[0067] The mass fraction of each component in the stable solution b is: 0.8% to 2% NaCl, 0.3% to 1.5% FeSO 4 , 0.2%~0.8%CuSO 4 ,0.1%~0.3%NaNO 3 , and the balance is water.

[0068] Adding mass fraction range of 40% absolute ethanol to the precursor liquid B liquid to replace the same mass fraction of water in the precursor liquid B liquid, and then spraying the surface of the weathering steel to promote rusting of the weathering steel surface. Layers dry quickly.

[0069] Adding anhydrous ethanol with a mass fraction range of 1% to the stabilizing liquid b to replace water of the same mass fraction in...

Embodiment 3

[0072] The processing method of this embodiment is basically the same as that of Embodiment 1, except that:

[0073] The precursor liquid is liquid C, and the corresponding stable liquid is liquid c.

[0074] The mass fractions of the components of the C liquid include: 0.1% to 2% NaCl, 0.5% to 0.9% NaCl 2 SO 4 , 0.6%~1%CuSO 4 ,0.2%~2%FeSO 4 , 40% absolute ethanol, and the balance is water.

[0075] The components and mass fractions of the corresponding stable liquid c include: 0.5% to 2% NaCl, 0.2% to 0.8% Na 2 SO 4 , 0.4% ~ 0.8% CuSO 4 ,0.5%~1.5%FeSO 4 , 0.1%~0.2%NaH 2 PO 3 , and the balance is water.

[0076] Adding mass fraction range of 40% absolute ethanol to the precursor liquid C liquid to replace the same mass fraction of water in the precursor liquid B liquid, and then spraying the surface of the weathering steel to promote rusting of the weathering steel surface. Layers dry quickly.

[0077] The color of the rust layer on the surface of the weathering st...

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Abstract

The invention belongs to the technical field of metal corrosion and protection, and relates to conditioning fluid for regulating the color of a rust layer on the surface of weathering resistant steeland a treatment method thereof. The conditioning fluid comprises a precursor solution for corrosion coloring of the surface of the weathering resistant steel, and a stabilizing solution for solidifying the color of the rust layer obtained after corrosion coloring of the surface of the weathering resistant steel. The precursor solution comprises one or two or more than two of a precursor solution body A which is used for enabling the rust layer of the surface of the weathering resistant steel to be red, a precursor solution body B which is used for enabling the rust layer of the surface of theweathering resistant steel to be yellow, and a precursor solution body C which is used for enabling the rust layer of the surface of the weathering resistant steel to be red with blue. According to the conditioning fluid and the treatment method thereof, by means of the theory that any color can be achieved by conducting composite mixing on the three primary colors, the precursor solution and thestabilizing solution are sequentially sprayed to the surface of the weathering resistant steel, an attractive visual effect is achieved under the situation that no coating is applied to the rust layerof the surface of the treated weathering resistant layer, and according to the three primary color combination theory, the color of the rust layer has the advantages of controllability and the like.

Description

technical field [0001] The invention belongs to the technical field of metal corrosion and protection, and in particular relates to a treatment solution for controlling the color of the rust layer on the surface of weathering steel and a treatment method thereof. Background technique [0002] Weathering steel has excellent corrosion resistance in the marine atmospheric environment, mainly relying on the stable and dense protective corrosion rust layer formed on its surface to delay further corrosion, thereby reducing the corrosion rate. [0003] Although weathering steel has good atmospheric corrosion resistance, during its service, the appearance of the steel structure is very poor, and the color of the outer surface is not beautiful, uneven, and cannot be selected. In the early stage of corrosion, rust liquid often hangs and disperses to pollute the surrounding environment This phenomenon makes it difficult for users to accept it when using it in the suburbs and urban area...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/05C23C22/78C23C22/76
CPCC23C22/05C23C22/76C23C22/78
Inventor 周鲁军杨善武谢蒙蒙郭晖尚成嘉王学敏万发荣李秀程谢振家董毅张文华张梦琪丁健文
Owner UNIV OF SCI & TECH BEIJING
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