CN110616422A - Chromium-free environment-friendly passivator for galvanized sheet and preparation and use method thereof - Google Patents
Chromium-free environment-friendly passivator for galvanized sheet and preparation and use method thereof Download PDFInfo
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- CN110616422A CN110616422A CN201910950530.5A CN201910950530A CN110616422A CN 110616422 A CN110616422 A CN 110616422A CN 201910950530 A CN201910950530 A CN 201910950530A CN 110616422 A CN110616422 A CN 110616422A
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- chromium
- free environment
- galvanized sheet
- friendly
- passivator
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000000839 emulsion Substances 0.000 claims abstract description 23
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000011701 zinc Substances 0.000 claims abstract description 16
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 16
- 229920002635 polyurethane Polymers 0.000 claims abstract description 15
- 239000004814 polyurethane Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000007822 coupling agent Substances 0.000 claims abstract description 12
- 239000013556 antirust agent Substances 0.000 claims abstract description 10
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004203 carnauba wax Substances 0.000 claims abstract description 9
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 9
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 9
- 239000008397 galvanized steel Substances 0.000 claims description 9
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 235000013869 carnauba wax Nutrition 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 4
- 239000003112 inhibitor Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000005238 degreasing Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 238000002161 passivation Methods 0.000 abstract description 5
- 238000004132 cross linking Methods 0.000 abstract description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 2
- 238000005536 corrosion prevention Methods 0.000 abstract description 2
- -1 fluorine ions Chemical class 0.000 abstract description 2
- 238000005461 lubrication Methods 0.000 abstract description 2
- 229910052731 fluorine Inorganic materials 0.000 abstract 1
- 239000011737 fluorine Substances 0.000 abstract 1
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229920006254 polymer film Polymers 0.000 description 3
- 235000010288 sodium nitrite Nutrition 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000012498 ultrapure water Substances 0.000 description 2
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 description 1
- 241001163841 Albugo ipomoeae-panduratae Species 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- WMOHXRDWCVHXGS-UHFFFAOYSA-N [La].[Ce] Chemical compound [La].[Ce] WMOHXRDWCVHXGS-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- ICAKDTKJOYSXGC-UHFFFAOYSA-K lanthanum(iii) chloride Chemical compound Cl[La](Cl)Cl ICAKDTKJOYSXGC-UHFFFAOYSA-K 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 208000005135 methemoglobinemia Diseases 0.000 description 1
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 235000003270 potassium fluoride Nutrition 0.000 description 1
- 239000011698 potassium fluoride Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910000349 titanium oxysulfate Inorganic materials 0.000 description 1
- YONPGGFAJWQGJC-UHFFFAOYSA-K titanium(iii) chloride Chemical compound Cl[Ti](Cl)Cl YONPGGFAJWQGJC-UHFFFAOYSA-K 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- C23C—COATING 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
- C23C22/00—Chemical 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
- C23C22/05—Chemical 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
- C23C22/68—Chemical 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 solutions with pH between 6 and 8
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 relates to a chromium-free environment-friendly passivator for a galvanized sheet and a preparation and use method thereof, wherein the passivator comprises the following components in parts by weight: 20-40 parts of latent curing type polyurethane emulsion; 5-20 parts of a zirconium coupling agent; 0.5-5 parts of organic zinc antirust agent; 1-8 parts of palm wax emulsion; 40-65 parts of pure water; the organic zinc antirust agent is ALCOPHOR; the pure water has a conductivity of less than 0.1 × 10‑6mΩ.cm‑1. The advantages are that: when the latent curing type polyurethane emulsion is used for curing, a film component is formed on a zinc plate through a cross-linking reaction, a zirconium coupling agent is organically complexed, corrosion of fluorine ions, sulfate ions and chloride ions is avoided, an organic zinc antirust agent, polyurethane and the coupling agent form an alternate cross-linking reaction, a firm passivation film is formed, and the latent curing type polyurethane emulsion has excellent corrosion prevention, wear resistance and lubrication effects.
Description
Technical Field
The invention relates to a chromium-free environment-friendly passivator for a galvanized sheet and a preparation and use method thereof.
Background
Galvanization is an effective method for improving the atmospheric corrosion resistance of steel, but in a humid environment, a galvanized layer is easy to corrode, white loose corrosion products are generated on the surface, dark gray products are sometimes generated, and the steel plate is seriously influencedThe appearance and performance of the galvanized sheet, therefore, the galvanized sheet is passivated and covered with a protective film. The passivating agent is a necessary product in the galvanizing processing process, the surface of a newly manufactured galvanized plate is very active, and the galvanized plate needs to be passivated before being packaged and stored in a warehouse so as to improve the antirust capacity in the storage and transportation processes. The action mechanism of the passivating agent is to seal micropores on the surface of the steel plate, and primary batteries are easily formed at the micropores to aggravate corrosion. The passivated steel plate has a smoother and more beautiful appearance, and does not influence subsequent processing such as welding, polishing and the like. The traditional passivation process adopts hexavalent chromic acid solution or sodium nitrite solution, and has self-repairing capability. Both of the above are carcinogenic substances, and the country has gradually abolished, especially exported products, and the use is forbidden. If the water discharged by European Union is not allowed to exceed 0.3mg/m3Some countries even propose no chromium (Cr) in wastewater6+) The ROHS directive of no hexavalent chromium is started to be implemented in 7 months in the European Union in 2006. Sodium nitrite is in contact with the skin for a long time, so that people can have serious skin allergy, and the taking of a few grams of sodium nitrite by mistake constitutes dangerous methemoglobinemia.
In recent years, the research on passivators is very active, more than 100 patent applications are already carried out in China, 50-60 passivators for galvanized plates are also available, and the passivators mainly focus on inorganic component passivators such as silicate, molybdate, titanate, zirconate and rare earth cerium lanthanum, but the antirust effect is not good when the protective film is too thin. The passivator composed of high polymer films such as conventional acrylic emulsion, polyurethane emulsion and the like has poor bonding strength with a metal matrix and also has unsatisfactory antirust effect. The third category is that the inorganic organic polymer composite passivator is improved compared with the two categories, but the adopted fluotitanate and fluozirconate assistants such as hydrogen fluoride, potassium fluoride, ammonium fluoride, sodium fluoride, fluosilicate and the like have obvious corrosion effect on the galvanized sheet; the adopted silane coupling agent and titanate coupling agent are easy to hydrolyze and have poor stability; the adopted anions of the rust inhibitors such as titanyl sulfate, lanthanum chloride, titanium trichloride and the like also have corrosion effect, and the high-grade chromium-free environment-friendly passivator which can be really used for industrial production is few.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a chromium-free environment-friendly passivator for a galvanized sheet and a preparation and use method thereof, which can meet the current environment-friendly requirement and can well protect a galvanized substrate.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a chromium-free environment-friendly passivator for a galvanized sheet comprises the following components in parts by weight:
the organic zinc antirust agent is ALCOPHOR.
The pure water has an electric conductivity of less than 0.1 × 10-6mΩ.cm-1。
Latent curing polyurethane emulsion is used as main filming matter and has exposed and cured reaction group during high temperature stoving. Too much tends to cause microcracking in the film, and increases the cost, and too little protection becomes weak. Selecting latent curing type single-component polyurethane emulsion.
The zirconium coupling agent further crosslinks and cures the polymer film, and when the amount is less than 5 parts, the curing is slowed down.
The organic zinc rust inhibitor (trade name alcopor) is distributed in the film phase and reacts with the zinc surface further to play a role in rust prevention. When the content is too large, the crystalline particles become large to affect the integrity of the film. ALCOPHOR 827 available from Hangao or Hechuan chemical may be selected.
The palm wax emulsion can enable the film to have lubricity on the premise of not influencing the antirust capacity, is convenient for subsequent shearing processing precision, and has the characteristic of small corrosivity. Less than 1 part is preferable because lubricity will be lost and foaming will occur when too much is applied.
Pure water (conductivity less than 0.1X 10)-6mΩ.cm-1) High purity water is the basis and guarantee of rust prevention.
A preparation method of a chromium-free environment-friendly passivator for a galvanized sheet comprises the following steps:
1) uniformly mixing the latent curing type polyurethane emulsion and the zirconium coupling agent;
2) uniformly mixing an organic zinc antirust agent and pure water;
3) mixing the mixed solution obtained in the step 1) and the step 2), adding the palm wax emulsion, and grinding in a sand mill for more than 10min to obtain the uniform chromium-free environment-friendly passivator.
A using method of a chromium-free environment-friendly passivator for a galvanized sheet comprises the following steps:
1) degreasing, cleaning and drying the galvanized steel sheet;
2) the galvanized sheet is evenly coated with the chromium-free environment-friendly passivating agent on two sides through a roller coater, and the coating amount is 1.2-2.0g/m on one side2;
3) After being coated, the galvanized steel sheet is dried by hot air, and the temperature of the galvanized steel is controlled at 70-95 ℃.
Compared with the prior art, the invention has the beneficial effects that:
the chromium-free environment-friendly passivator for the galvanized sheet utilizes cross-linking reaction on the galvanized sheet to form a membrane component when latent curing type polyurethane emulsion is cured, organically complexes a zirconium coupling agent to avoid corrosion of fluoride ions, sulfate ions and chloride ions, and forms a firm passivation membrane by the interpenetrating cross-linking reaction of an organic zinc antirust agent, polyurethane and the coupling agent, and has excellent corrosion prevention, wear resistance and lubrication effects. Under the condition of 85-95 ℃ of plate temperature, the drying speed is fast, the involucra has certain toughness, and the impact resistance is improved. The bonding strength, the rust resistance, the aging resistance and other key indexes are excellent, and white rust does not exist within 72 hours of a salt spray corrosion test.
Drawings
FIG. 1 is a first micrograph of a galvanized sheet treated with a chromium-free environmental passivation agent for galvanized sheets.
FIG. 2 is a second micrograph of a galvanized sheet treated with a chromium-free environmental passivation agent for galvanized sheets.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.
A chromium-free environment-friendly passivator for a galvanized sheet comprises the following components in parts by weight:
the organic zinc antirust agent is ALCOPHOR. The pure water has a conductivity of less than 0.1 × 10-6mΩ.cm-1. The carnauba wax emulsion is preferably a carnauba wax emulsion.
Latent curing polyurethane emulsion is used as main filming matter and has exposed and cured reaction group during high temperature stoving. Too much tends to cause microcracking in the film, and increases the cost, and too little protection becomes weak. Selecting latent curing type single-component polyurethane emulsion.
The zirconium coupling agent further crosslinks and cures the polymer film, and when the amount is less than 5 parts, the curing is slowed down.
The organic zinc rust inhibitor (trade name alcopor) is distributed in the film phase and reacts with the zinc surface further to play a role in rust prevention. When the content is too large, the crystalline particles become large to affect the integrity of the film. ALCOPHOR 827 available from Hangao or Hechuan chemical may be selected.
The carnauba wax emulsion can enable the film to have lubricity on the premise of not influencing the antirust capacity, and is convenient for subsequent shearing processing precision. Less than 1 part is preferable because lubricity will be lost and foaming will occur when too much is applied.
Pure water (conductivity less than 0.1X 10)-6mΩ.cm-1) High purity water is the basis and guarantee of rust prevention.
A preparation method of a chromium-free environment-friendly passivator for a galvanized sheet comprises the following steps:
1) uniformly mixing the latent curing type polyurethane emulsion and the zirconium coupling agent;
2) uniformly mixing an organic zinc antirust agent and pure water;
3) mixing the mixed solution obtained in the step 1) and the step 2), adding the carnauba wax emulsion, and grinding in a sand mill for more than 10min to obtain the uniform chromium-free environment-friendly passivator.
A using method of a chromium-free environment-friendly passivator for a galvanized sheet comprises the following steps:
1) degreasing the galvanized steel sheet, cleaning with pure water, and drying with hot air;
2) the galvanized sheet is evenly coated on two sides by a roller coaterThe galvanized sheet chromium-free environment-friendly passivator has the coating weight of 1.2-2.0g/m on one side2;
3) After being coated, the galvanized steel sheet is dried by hot air, and the temperature of the galvanized steel is controlled to be 85-95 ℃.
The chromium-free environment-friendly passivator for the galvanized sheet comprises the following components in percentage by weight:
example one | Example two | EXAMPLE III | Example four | |
Latent curing polyurethane emulsion (unit:%) | 30 | 40 | 20 | 20 |
Zirconium coupling agent (Unit:%) | 10 | 5 | 20 | 8 |
Organic zinc antirust agent (unit:%) | 1.5 | 5 | 5 | 1 |
Carnauba wax emulsion (unit:%) | 4 | 4 | 1 | 7 |
Pure water (unit:%) | 54.5 | 46 | 54 | 64 |
The galvanized sheet chromium-free environment-friendly passivator has the following treatment effects:
the galvanized sheet chromium-free environment-friendly passivating agent can protect the corrosion resistance of the substrate after being coated on the galvanized sheet and has excellent binding force.
Claims (5)
1. The chromium-free environment-friendly passivator for the galvanized sheet is characterized by comprising the following components in parts by weight:
2. the galvanized sheet chromium-free environment-friendly passivator according to claim 1, wherein the organic zinc rust inhibitor is ALCOPHOR.
3. The galvanized sheet chromium-free environment-friendly passivator according to claim 1, wherein the conductivity of pure water is less than 0.1 x 10-6mΩ.cm-1。
4. The preparation method of the chromium-free environment-friendly passivator for the galvanized sheet according to claim 1, characterized by comprising the following steps:
1) uniformly mixing the latent curing type polyurethane emulsion and the zirconium coupling agent;
2) uniformly mixing an organic zinc antirust agent and pure water;
3) mixing the mixed solution obtained in the step 1) and the step 2), adding the carnauba wax emulsion, and grinding in a sand mill for more than 10min to obtain the uniform chromium-free environment-friendly passivator.
5. The use method of the chromium-free environment-friendly passivator for the galvanized sheet according to claim 1, characterized by comprising the following steps:
1) degreasing, cleaning and drying the galvanized steel sheet;
2) the galvanized sheet is evenly coated with the chromium-free environment-friendly passivating agent on two sides through a roller coater, and the coating amount is 1.2-2.0g/m on one side2;
3) After being coated, the galvanized steel sheet is dried by hot air, and the temperature of the galvanized steel is controlled at 70-95 ℃.
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CN201910950530.5A CN110616422B (en) | 2019-10-08 | 2019-10-08 | Chromium-free environment-friendly passivator for galvanized sheet and preparation and use method thereof |
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CN201910950530.5A CN110616422B (en) | 2019-10-08 | 2019-10-08 | Chromium-free environment-friendly passivator for galvanized sheet and preparation and use method thereof |
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CN110616422B CN110616422B (en) | 2022-03-22 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114951933A (en) * | 2022-04-06 | 2022-08-30 | 攀钢集团攀枝花钢铁研究院有限公司 | Spot welding method for environment-friendly passivated galvanized plate |
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US4508767A (en) * | 1982-12-28 | 1985-04-02 | Dai Nippon Tokyo Co., Ltd | Process for forming a corrosion resistant coating |
CN102245807A (en) * | 2008-12-16 | 2011-11-16 | 日本帕卡濑精株式会社 | Surface treating agent for galvanized steel sheet |
CN104497841A (en) * | 2014-12-15 | 2015-04-08 | 中国钢研科技集团有限公司 | Water-based chromium-free surface lubricating treating agent for galvanized steel sheets and application method of treating agent |
CN104947098A (en) * | 2015-05-29 | 2015-09-30 | 焦占付 | Hot galvanizing chromium-free passivation agent and preparation method thereof |
WO2017016455A1 (en) * | 2015-07-27 | 2017-02-02 | 宝山钢铁股份有限公司 | Environmentally friendly surface treating agent for galvanized steel sheet, galvanized steel sheet, and manufacturing method for galvanized steel sheet |
WO2017028438A1 (en) * | 2015-08-14 | 2017-02-23 | 尤为 | Chromium-free passivator with hydrophobic surface property for plated metal |
-
2019
- 2019-10-08 CN CN201910950530.5A patent/CN110616422B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4508767A (en) * | 1982-12-28 | 1985-04-02 | Dai Nippon Tokyo Co., Ltd | Process for forming a corrosion resistant coating |
CN102245807A (en) * | 2008-12-16 | 2011-11-16 | 日本帕卡濑精株式会社 | Surface treating agent for galvanized steel sheet |
CN104497841A (en) * | 2014-12-15 | 2015-04-08 | 中国钢研科技集团有限公司 | Water-based chromium-free surface lubricating treating agent for galvanized steel sheets and application method of treating agent |
CN104947098A (en) * | 2015-05-29 | 2015-09-30 | 焦占付 | Hot galvanizing chromium-free passivation agent and preparation method thereof |
WO2017016455A1 (en) * | 2015-07-27 | 2017-02-02 | 宝山钢铁股份有限公司 | Environmentally friendly surface treating agent for galvanized steel sheet, galvanized steel sheet, and manufacturing method for galvanized steel sheet |
WO2017028438A1 (en) * | 2015-08-14 | 2017-02-23 | 尤为 | Chromium-free passivator with hydrophobic surface property for plated metal |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN114951933A (en) * | 2022-04-06 | 2022-08-30 | 攀钢集团攀枝花钢铁研究院有限公司 | Spot welding method for environment-friendly passivated galvanized plate |
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