CN106835162B - Method for removing stainless steel surface rust - Google Patents

Method for removing stainless steel surface rust Download PDF

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Publication number
CN106835162B
CN106835162B CN201710079252.1A CN201710079252A CN106835162B CN 106835162 B CN106835162 B CN 106835162B CN 201710079252 A CN201710079252 A CN 201710079252A CN 106835162 B CN106835162 B CN 106835162B
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parts
weight
rusty
rust
stainless steel
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CN201710079252.1A
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CN106835162A (en
Inventor
徐广林
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TAIZHOU CHAOWEI ELECTROMECHANICAL EQUIPMENT MANUFACTURING Co.,Ltd.
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Jiangsu Jinhuanqiu Construction Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/08—Iron or steel
    • C23G1/085—Iron or steel solutions containing HNO3
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
    • C09D171/02—Polyalkylene oxides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Abstract

The invention discloses a method for removing rusty stains on the surface of stainless steel, which comprises the steps of dissolving and cleaning the rusty stains by nitric acid and hydrogen peroxide, forming an oxide layer on the surface of corroded metal, and then coating the rusty spots with prepared mixed solution. The method for removing the rusty stains on the surface of the stainless steel can deeply dissolve and remove the rusty stains, and the rusty stain surface is coated with the rusty-proof layer which is tightly attached to the surface of the stainless steel, so that the rusty stain is not peeled and shed even under the influence of external thermal expansion and cold contraction, the metal surface at a rusty part is isolated from external corrosive substances, and the rusty stain is prevented from being further rusted.

Description

Method for removing stainless steel surface rust
Technical Field
The invention relates to the field of stainless steel manufacturing, in particular to a method for removing rusts on the surface of stainless steel.
Background
Stainless steel is a metal that does not rust easily, but is not absolutely stainless. Depending on the conditions and environments, the steel sheet may be contaminated and rusted. Stainless steel products have excellent corrosion resistance and are not prone to rusting because they contain chromium, and in air, they combine with oxygen to form a firm surface and a dense non-oxidized film which prevents oxidation of the steel surface and protects the surface from corrosion by various corrosion factors. Therefore, if the coating is damaged by some corrosion, the coating is left on the portion where chromium and oxygen cannot be bonded, and the stainless steel building material begins to rust.
For the stainless steel surface which is rusted, if the rusts are only ground, the rusts can quickly roll up the soil due to the damage of the rusted surface protective layer, and the further rust prevention of the stainless steel is not facilitated.
Disclosure of Invention
The invention mainly solves the technical problems in the prior art, and provides a method for removing rusts on the surface of stainless steel.
The technical problem of the invention is mainly solved by the following technical scheme:
a method for removing stainless steel surface rust comprises the following steps:
①, dipping a nitric acid solution with the concentration of 6-12% into a proper amount of nitric acid solution, uniformly coating the nitric acid solution on the surface of the rust, wiping the rust clean by using a soft cloth after 15-20 minutes, coating hydrogen peroxide with the concentration of 15-18% on the surface of the rust, and blowing the rust clean by using a high-pressure air gun after 6-10 minutes;
②, taking 18-26 parts of polysorbate, 5-8 parts of lauryl betaine, 10-18 parts of sulfamic acid, 2-6 parts of dodecanol ester, 1-4 parts of croscarmellose sodium, 25-35 parts of propylene glycol monomethyl ether acetate, 20-30 parts of kerosene, 15-20 parts of glycerol monooleate, 5-10 parts of triethanolamine, 15-20 parts of silane coupling agent KH 550and 8-15 parts of paraffin oil according to parts by weight, adding the taken raw materials into a reaction kettle together, controlling the internal temperature of the reaction kettle at 45-55 ℃, stirring for 15-20 minutes at the speed of 70-80rpm, and naturally cooling to room temperature to obtain a mixed solution;
③ heating the surface of the rusty scale with alcohol burner, naturally cooling, brushing the mixed solution prepared in step ② on the surface of rusty scale when the temperature of rusty scale surface is reduced to 50-60 deg.C, and air cooling to room temperature.
In step ②, 22 parts of polysorbate, 7 parts of lauryl betaine, 15 parts of sulfamic acid, 4 parts of dodecanol ester, 3 parts of croscarmellose sodium, 28 parts of propylene glycol monomethyl ether acetate, 27 parts of kerosene, 16 parts of glycerol monooleate, 8 parts of triethanolamine, 17 parts of a silane coupling agent KH55017 and 12 parts of paraffin oil are taken according to parts by weight.
The method for removing the rusty stains on the surface of the stainless steel can deeply dissolve and remove the rusty stains, and the rusty stain surface is coated with the rusty-proof layer which is tightly attached to the surface of the stainless steel, so that the rusty stain is not peeled and shed even under the influence of external thermal expansion and cold contraction, the metal surface at a rusty part is isolated from external corrosive substances, and the rusty stain is prevented from being further rusted.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention and to clearly and unequivocally define the scope of the present invention.
[ example 1]
①, dipping a nitric acid solution with the concentration of 6% into a proper amount of nitric acid solution, uniformly coating the nitric acid solution on the surface of the rust, wiping the rust clean by using a soft cloth after 15 minutes, coating hydrogen peroxide with the concentration of 15% on the surface of the rust, and blowing the rust clean by using a high-pressure air gun after 6 minutes;
②, taking 18 parts of polysorbate, 5 parts of lauryl betaine, 10 parts of sulfamic acid, 2 parts of dodecyl alcohol ester, 1 part of croscarmellose sodium, 25 parts of propylene glycol methyl ether acetate, 20 parts of kerosene, 15 parts of glycerol monooleate, 5 parts of triethanolamine, 15 parts of a silane coupling agent KH 550and 8 parts of paraffin oil according to parts by weight, adding the taken raw materials into a reaction kettle together, controlling the internal temperature of the reaction kettle to be 45 ℃, stirring for 15 minutes at the speed of 70rpm, and naturally cooling to room temperature to obtain a mixed solution;
③ heating the surface of the rusty scale with alcohol burner, naturally cooling, brushing the mixed solution prepared in step ② on the surface of rusty scale when the temperature of rusty scale surface is reduced to 50 deg.C, and air cooling to room temperature.
[ example 2]
①, dipping a 12% nitric acid solution into a proper amount of nitric acid solution, uniformly coating the nitric acid solution on the surface of the rust, wiping the rust clean with a soft cloth after 20 minutes, coating the hydrogen peroxide solution with 18% concentration on the surface of the rust, and blowing the rust clean with a high-pressure air gun after 10 minutes;
② weighing 26 parts of polysorbate, 8 parts of lauryl betaine, 18 parts of sulfamic acid, 6 parts of dodecyl alcohol ester, 4 parts of croscarmellose sodium, 35 parts of propylene glycol methyl ether acetate, 30 parts of kerosene, 20 parts of glycerol monooleate, 10 parts of triethanolamine, 20 parts of a silane coupling agent KH 550and 15 parts of paraffin oil according to parts by weight, adding the weighed raw materials into a reaction kettle, controlling the internal temperature of the reaction kettle to be 55 ℃, stirring for 20 minutes at the speed of 80rpm, and naturally cooling to room temperature to obtain a mixed solution;
③ heating the surface of the rusty scale with alcohol burner, naturally cooling, brushing the mixed solution prepared in step ② on the surface of rusty scale when the temperature of rusty scale surface is reduced to 60 deg.C, and air cooling to room temperature.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims (2)

1. A method for removing stainless steel surface rust is characterized by comprising the following steps:
①, dipping a nitric acid solution with the concentration of 6-12% into a proper amount of nitric acid solution, uniformly coating the nitric acid solution on the surface of the rust, wiping the rust clean by using a soft cloth after 15-20 minutes, coating hydrogen peroxide with the concentration of 15-18% on the surface of the rust, and blowing the rust clean by using a high-pressure air gun after 6-10 minutes;
②, taking 18-26 parts of polysorbate, 5-8 parts of lauryl betaine, 10-18 parts of sulfamic acid, 2-6 parts of dodecanol ester, 1-4 parts of croscarmellose sodium, 25-35 parts of propylene glycol monomethyl ether acetate, 20-30 parts of kerosene, 15-20 parts of glycerol monooleate, 5-10 parts of triethanolamine, 15-20 parts of silane coupling agent KH 550and 8-15 parts of paraffin oil according to parts by weight, adding the taken raw materials into a reaction kettle together, controlling the internal temperature of the reaction kettle at 45-55 ℃, stirring for 15-20 minutes at the speed of 70-80rpm, and naturally cooling to room temperature to obtain a mixed solution;
③ heating the surface of the rusty scale with alcohol burner, naturally cooling, brushing the mixed solution prepared in step ② on the surface of rusty scale when the temperature of rusty scale surface is reduced to 50-60 deg.C, and air cooling to room temperature.
2. The method for removing rust on a stainless steel surface according to claim 1, wherein 22 parts by weight of polysorbate, 7 parts by weight of lauryl betaine, 15 parts by weight of sulfamic acid, 4 parts by weight of dodecanol ester, 3 parts by weight of croscarmellose sodium, 28 parts by weight of propylene glycol monomethyl ether acetate, 27 parts by weight of kerosene, 16 parts by weight of glycerol monooleate, 8 parts by weight of triethanolamine, 17 parts by weight of a silane coupling agent KH55017 parts by weight of paraffin oil are taken in step ②.
CN201710079252.1A 2017-02-14 2017-02-14 Method for removing stainless steel surface rust Active CN106835162B (en)

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Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
CN109023404A (en) * 2018-08-27 2018-12-18 合肥绿洁环保科技有限公司 A kind of antirust low foam metal cleaner
CN109023403A (en) * 2018-08-27 2018-12-18 合肥绿洁环保科技有限公司 A kind of low bubble cleaning agent of copper product
CN111022469A (en) * 2019-12-31 2020-04-17 东台市展新不锈钢紧固件制造有限公司 Rust prevention method for stainless steel fastener

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101922011A (en) * 2010-08-06 2010-12-22 东北大学 Pickling method of surface of 430 stainless steel
CN103215611A (en) * 2013-03-27 2013-07-24 沈阳帕卡濑精有限总公司 Phosphorus-free water-based metal cleaning agent
CN105297038A (en) * 2015-11-18 2016-02-03 南京科润工业介质股份有限公司 Non-phosphorous water-based degreasing agent used in non-phosphorous coating pretreatment
CN106086907A (en) * 2016-08-27 2016-11-09 合肥普庆新材料科技有限公司 A kind of Pretreatment Technology Before Finishing of band pickling process

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2162546B1 (en) * 1999-01-22 2003-05-01 Bsh Fabricacion Sa METHOD AND INSTALLATION FOR THE SURFACE TREATMENT OF STAINLESS STEEL.
JP2000297391A (en) * 1999-04-09 2000-10-24 Kurosaki Kagaku Kogyo Kk Pickling agent and production thereof
CN104131300B (en) * 2014-07-01 2015-10-28 蚌埠市高华电子有限公司 A kind of for stainless mixed polishing solution and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101922011A (en) * 2010-08-06 2010-12-22 东北大学 Pickling method of surface of 430 stainless steel
CN103215611A (en) * 2013-03-27 2013-07-24 沈阳帕卡濑精有限总公司 Phosphorus-free water-based metal cleaning agent
CN105297038A (en) * 2015-11-18 2016-02-03 南京科润工业介质股份有限公司 Non-phosphorous water-based degreasing agent used in non-phosphorous coating pretreatment
CN106086907A (en) * 2016-08-27 2016-11-09 合肥普庆新材料科技有限公司 A kind of Pretreatment Technology Before Finishing of band pickling process

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Address after: 225500 People's Middle Road, Luotang Street, Jiangyan District, Taizhou City, Jiangsu Province, 9-16

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Address before: 9-16 Renmin Middle Road, Luotang street, Jiangyan District, Taizhou City, Jiangsu Province 225500

Patentee before: JIANGSU JINHUANQIU CONSTRUCTION Co.,Ltd.