CN114540805A - One-step treatment method for rust dissolving, rust preventing and blackening of steel - Google Patents

One-step treatment method for rust dissolving, rust preventing and blackening of steel Download PDF

Info

Publication number
CN114540805A
CN114540805A CN202210070676.2A CN202210070676A CN114540805A CN 114540805 A CN114540805 A CN 114540805A CN 202210070676 A CN202210070676 A CN 202210070676A CN 114540805 A CN114540805 A CN 114540805A
Authority
CN
China
Prior art keywords
rust
steel
blackening
preventing
agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210070676.2A
Other languages
Chinese (zh)
Inventor
崔进
王德立
王志亚
刘坤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Xintai Water Treatment Technology Co Ltd
Original Assignee
Shandong Xintai Water Treatment Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong Xintai Water Treatment Technology Co Ltd filed Critical Shandong Xintai Water Treatment Technology Co Ltd
Priority to CN202210070676.2A priority Critical patent/CN114540805A/en
Publication of CN114540805A publication Critical patent/CN114540805A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/48Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
    • C23C22/50Treatment of iron or alloys based thereon
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/34Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/82After-treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

The invention discloses a one-step steel rust-dissolving, rust-preventing and blackening treatment method, which comprises a medicament for steel treatment, wherein the treatment medicament comprises the following components: 40-50% of water, 40-50% of phosphoric acid, 5-10% of complexing agent, 2-4% of blackening agent, 1-2% of corrosion inhibitor and 0.1-0.3% of antioxidant. The invention discloses a one-step steel rust-removing, rust-preventing and blackening treatment method, which is characterized in that a treatment agent stock solution is sprayed or brushed on the outer surface of a steel workpiece, the steel workpiece is sprayed or brushed on the outer surface of the steel workpiece after standing for 20 minutes, the steel workpiece coated with the treatment agent is dried or dried, the steel workpiece coated with the treatment agent is converted and forms a black protective layer after being subjected to 24 hours, and then a layer of rust-preventing paint is coated on the outer surface of the steel workpiece, so that the one-step steel rust-removing, rust-preventing and blackening treatment effect is realized, and no 'grey coating' phenomenon occurs in the treatment process.

Description

One-step treatment method for rust dissolving, rust preventing and blackening of steel
Technical Field
The invention belongs to the technical field of metal surface treatment, and particularly relates to a one-step treatment method for steel rust removal, rust prevention and blackening.
Background
At present, the conventional steel rust removal, rust prevention and blackening methods generally comprise pickling rust removal, sand blasting rust prevention, water washing, phosphating blackening or oxidation blackening, and finally soaking in rust-proof oil, a film protecting liquid, an antirust paint and the like to enhance the protection performance, the process is complex, the waste time and labor are consumed, three wastes are generated in the treatment process, and the harm is generated to the environment and the health of operators.
Aiming at the problems, a reagent which directly converts rust into rust removal and delamination without removing rust appears in the market. However, the medicament on the market generally has incomplete conversion to a thicker rust layer, loose protective layer and white 'ash hanging' phenomenon. Therefore, by optimizing the formula, the one-step steel rust-removing, rust-preventing and blackening treating agent and the treating method are invented, the rust layer is completely converted, the formed conversion film is uniform and compact, and the color is black, and the phenomenon of ash hanging does not occur in the using process.
Disclosure of Invention
The invention aims to provide a one-step steel rust-removing, rust-preventing and blackening treatment method, which is realized by the following technical scheme for solving the technical problems:
a one-step steel rust-dissolving, rust-preventing and blackening treatment method comprises a medicament for steel treatment, and is characterized in that: the treatment agent comprises the following components: 40-50% of water, 40-50% of phosphoric acid, 5-10% of complexing agent, 2-4% of blackening agent, 1-2% of corrosion inhibitor and 0.1-0.3% of antioxidant;
the processing method comprises the following steps:
step one, spraying or brushing the treating agent stock solution on the outer surface of a steel workpiece;
step two, after the steel workpiece is kept stand for 20 minutes, spraying or brushing the treating agent stock solution on the outer surface of the steel workpiece;
thirdly, drying or blowing the steel workpiece coated with the treatment agent;
and step four, finishing conversion after the steel workpiece coated with the treatment agent is subjected to 24 hours, forming a black protective layer, and coating a layer of antirust paint on the outer surface of the steel workpiece.
Preferably, the phosphoric acid is 85% industrial phosphoric acid, and the complexing agent is one or more of citric acid, tartaric acid, triethanolamine and ammonium bifluoride.
Preferably, the blackening agent is one or two of pyrogallic acid or tannic acid, the corrosion inhibitor is at least three of urotropine, mercaptobenzothiazole, benzotriazole, sodium hydrosulfate, sodium dodecyl benzene sulfonate and sodium benzoate, and the antioxidant is one or two of hydroquinone or resorcinol.
Preferably, the first step and the second step are carried out in a normal temperature environment, and should not be carried out at 10 ℃ or lower, and during drying, dew condensation or rain should be avoided.
Preferably, the drying in the third step is drying by a hot air blower, and the drying is drying by an oven.
The invention has the following beneficial effects:
according to the invention, the treating agent stock solution is coated on the outer surface of the steel workpiece, the rust layer on the surface of the steel workpiece is converted to form a conversion film, and the conversion film is uniformly and compactly attached to the outer surface of the steel workpiece, so that the steel is subjected to rust removing, rust preventing and blackening treatment in one step, and no 'ash hanging' phenomenon occurs in the treating process.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
A one-step steel rust-dissolving, rust-preventing and blackening treatment method comprises a medicament for steel treatment, and is characterized in that: the treatment agent preferably comprises the following components: 45.6 percent of water, 43 percent of phosphoric acid, 5 percent of triethanolamine, 3 percent of pyrogallic acid, 0.2 percent of hydroquinone and 1.2 percent of corrosion inhibitor (consisting of urotropine, promoter M, sodium thiocyanate and LAS);
the processing method comprises the following steps:
spraying or brushing the treating agent stock solution on the outer surface of a steel workpiece, and performing construction at normal temperature without being below 10 ℃, wherein the treatment is performed in a drying period without dewing or raining;
step two, after the steel workpiece is kept stand for 20 minutes, spraying or brushing the treating agent stock solution on the outer surface of the steel workpiece;
thirdly, drying the steel workpiece coated with the treatment agent by using a hot air blower or drying the steel workpiece by using an oven;
and step four, finishing conversion after the steel workpiece coated with the treatment agent is subjected to 24 hours, forming a black protective layer, and coating a layer of antirust paint on the outer surface of the steel workpiece.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (5)

1. A one-step steel rust-dissolving, rust-preventing and blackening treatment method comprises a medicament for steel treatment, and is characterized in that: the treatment agent comprises the following components: 40-50% of water, 40-50% of phosphoric acid, 5-10% of complexing agent, 2-4% of blackening agent, 1-2% of corrosion inhibitor and 0.1-0.3% of antioxidant;
the processing method comprises the following steps:
step one, spraying or brushing the treating agent stock solution on the outer surface of a steel workpiece;
step two, after the steel workpiece is kept stand for 20 minutes, spraying or brushing the treating agent stock solution on the outer surface of the steel workpiece;
thirdly, drying or blowing the steel workpiece coated with the treatment agent;
and step four, finishing conversion after the steel workpiece coated with the treatment agent is subjected to 24 hours, forming a black protective layer, and coating a layer of antirust paint on the outer surface of the steel workpiece.
2. The one-step steel rust-dissolving, rust-preventing and blackening treatment method according to claim 1, characterized in that: the phosphoric acid is 85% industrial phosphoric acid, and the complexing agent is one or more of citric acid, tartaric acid, triethanolamine and ammonium bifluoride.
3. The one-step steel rust-dissolving, rust-preventing and blackening treatment method according to claim 1, characterized in that: the blackening agent is one or two of pyrogallic acid or tannic acid, the corrosion inhibitor is at least three of urotropine, mercaptobenzothiazole, benzotriazole, sodium hydrosulphate, sodium dodecyl benzene sulfonate and sodium benzoate, and the antioxidant is one or two of hydroquinone or resorcinol.
4. The one-step steel rust-dissolving, rust-preventing and blackening treatment method according to claim 1, characterized in that: the first step and the second step are carried out in a normal temperature environment, construction is not required to be carried out below 10 ℃, and condensation or rain is avoided during drying.
5. The one-step steel rust-dissolving, rust-preventing and blackening treatment method according to claim 1, characterized in that: in the third step, the drying means drying by a hot air blower and the drying means drying by an oven.
CN202210070676.2A 2022-01-21 2022-01-21 One-step treatment method for rust dissolving, rust preventing and blackening of steel Pending CN114540805A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210070676.2A CN114540805A (en) 2022-01-21 2022-01-21 One-step treatment method for rust dissolving, rust preventing and blackening of steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210070676.2A CN114540805A (en) 2022-01-21 2022-01-21 One-step treatment method for rust dissolving, rust preventing and blackening of steel

Publications (1)

Publication Number Publication Date
CN114540805A true CN114540805A (en) 2022-05-27

Family

ID=81671259

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210070676.2A Pending CN114540805A (en) 2022-01-21 2022-01-21 One-step treatment method for rust dissolving, rust preventing and blackening of steel

Country Status (1)

Country Link
CN (1) CN114540805A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115340796A (en) * 2022-09-05 2022-11-15 上海保立佳化学技术有限公司 Rust-conversion rust-fixation waterproof coating and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87101353A (en) * 1987-06-10 1988-12-21 山东省冶金研究所 Iron and steel surface painting preprocessing liquor-one step phosphorus liquid
JPH0849082A (en) * 1994-08-03 1996-02-20 Daido Kagaku Kogyo Kk Surface-treating composition for blackening and treatment using the same
CN1125268A (en) * 1994-12-19 1996-06-26 吴镛俊 Low temp. antirusting bonderizing liquor
CN101407915A (en) * 2008-11-24 2009-04-15 夏光甫 Environment-friendly metal rust-removing and rust-preventing spraying liquid
JP2018066055A (en) * 2016-10-19 2018-04-26 株式会社サンエイジ Method for producing iron-rust reduction rustproofing agent

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87101353A (en) * 1987-06-10 1988-12-21 山东省冶金研究所 Iron and steel surface painting preprocessing liquor-one step phosphorus liquid
JPH0849082A (en) * 1994-08-03 1996-02-20 Daido Kagaku Kogyo Kk Surface-treating composition for blackening and treatment using the same
CN1125268A (en) * 1994-12-19 1996-06-26 吴镛俊 Low temp. antirusting bonderizing liquor
CN101407915A (en) * 2008-11-24 2009-04-15 夏光甫 Environment-friendly metal rust-removing and rust-preventing spraying liquid
JP2018066055A (en) * 2016-10-19 2018-04-26 株式会社サンエイジ Method for producing iron-rust reduction rustproofing agent

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
易博;董勇军;赵定义;高义斌;李启润;张俊喜;: "磷酸、单宁酸混合型带锈转化液的转化效果", 腐蚀与防护, no. 09, pages 874 *
虢韬;王伟;赵定义;杨恒;屈中伟;: "单宁酸-磷酸复合转化液pH值对Q235钢锈层结构和防腐蚀性能的影响", 材料保护, no. 03 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115340796A (en) * 2022-09-05 2022-11-15 上海保立佳化学技术有限公司 Rust-conversion rust-fixation waterproof coating and preparation method thereof

Similar Documents

Publication Publication Date Title
CN105603349A (en) Hot galvanizing process
CN114540805A (en) One-step treatment method for rust dissolving, rust preventing and blackening of steel
US5344505A (en) Non-chromium passivation method and composition for galvanized metal surfaces
GB2158845A (en) Composition and process for treatment of ferrous substrates
NO873904L (en) DISEASING PASSIVATION BY MULTIMETAL METAL PROGRESS.
JPH01283386A (en) Metal surface treatment composition and formation of protective film
CN104862717A (en) Closed internal acid washing process
CN110257838B (en) Aluminum profile powder spraying pretreatment process
CN108315677B (en) Hot galvanizing process for communication tower
CN101392360A (en) Hot-dipped aluminum technique method of heavy duty automobile exhaust tube
CN111763907A (en) Salt bath nitriding agent for metal workpiece surface treatment and metal workpiece surface treatment method
AU2004252269A1 (en) Composition for forming conversion coatings on aluminium surfaces
US5688340A (en) Preparation of metal surfaces for vitreous enameling
CN106868438A (en) Steel structure zincincation
CA2381247A1 (en) Method and installation for hot dip galvanizing hot rolled steel strip
CN106011837A (en) Environment-friendly type metal surface treatment technology
CN104195485B (en) On-line automatic pretreatment process for steel pipe hot-dip galvanizing
CN107502904B (en) Environment-friendly pickling solution applied to stainless steel
CN108580237A (en) The spraying method of aluminium alloy extrusions
CN110699621A (en) Galvanizing method for steel member of solar photovoltaic/photothermal support system
CN113857016A (en) Treatment process for forging galvanized iron art handrail in high-humidity environment
KR20190115872A (en) Method for forming a metal coating
CN103952689A (en) Environment-friendly multifunctional metal surface treatment solution
JPS6025503B2 (en) Pre-painting treatment agent and method for steel materials
CN113814146A (en) Treatment process for forging galvanized iron art handrail with high air salt concentration

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20220527