CN116121677B - Plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating layer, and preparation method and use method thereof - Google Patents
Plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating layer, and preparation method and use method thereof Download PDFInfo
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- CN116121677B CN116121677B CN202211500738.5A CN202211500738A CN116121677B CN 116121677 B CN116121677 B CN 116121677B CN 202211500738 A CN202211500738 A CN 202211500738A CN 116121677 B CN116121677 B CN 116121677B
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- plating
- sulfate
- hot dip
- magnesium alloy
- zinc
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- 238000007747 plating Methods 0.000 title claims abstract description 239
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 82
- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 63
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 238000005246 galvanizing Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title abstract description 8
- -1 rare earth sulfate Chemical class 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims abstract description 23
- 235000011130 ammonium sulphate Nutrition 0.000 claims abstract description 23
- FAKFSJNVVCGEEI-UHFFFAOYSA-J tin(4+);disulfate Chemical compound [Sn+4].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O FAKFSJNVVCGEEI-UHFFFAOYSA-J 0.000 claims abstract description 23
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims abstract description 23
- 229910000368 zinc sulfate Inorganic materials 0.000 claims abstract description 23
- 229960001763 zinc sulfate Drugs 0.000 claims abstract description 23
- 239000004094 surface-active agent Substances 0.000 claims abstract description 12
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 11
- 239000011777 magnesium Substances 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 90
- 239000010959 steel Substances 0.000 claims description 90
- 238000005238 degreasing Methods 0.000 claims description 23
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 21
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 21
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 19
- 239000011701 zinc Substances 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 12
- 229910000347 yttrium sulfate Inorganic materials 0.000 claims description 11
- RTAYJOCWVUTQHB-UHFFFAOYSA-H yttrium(3+);trisulfate Chemical compound [Y+3].[Y+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RTAYJOCWVUTQHB-UHFFFAOYSA-H 0.000 claims description 11
- 150000002191 fatty alcohols Chemical class 0.000 claims description 10
- LEDZTLLWGZWUMH-UHFFFAOYSA-H cerium(3+) lanthanum(3+) trisulfate Chemical compound S(=O)(=O)([O-])[O-].[Ce+3].[La+3].S(=O)(=O)([O-])[O-].S(=O)(=O)([O-])[O-] LEDZTLLWGZWUMH-UHFFFAOYSA-H 0.000 claims description 8
- OZECDDHOAMNMQI-UHFFFAOYSA-H cerium(3+);trisulfate Chemical compound [Ce+3].[Ce+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O OZECDDHOAMNMQI-UHFFFAOYSA-H 0.000 claims description 8
- VQEHIYWBGOJJDM-UHFFFAOYSA-H lanthanum(3+);trisulfate Chemical compound [La+3].[La+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O VQEHIYWBGOJJDM-UHFFFAOYSA-H 0.000 claims description 8
- DVEKCXOJTLDBFE-UHFFFAOYSA-N n-dodecyl-n,n-dimethylglycinate Chemical compound CCCCCCCCCCCC[N+](C)(C)CC([O-])=O DVEKCXOJTLDBFE-UHFFFAOYSA-N 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000000779 smoke Substances 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000005260 corrosion Methods 0.000 abstract description 7
- 150000003841 chloride salts Chemical class 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 42
- 229910045601 alloy Inorganic materials 0.000 description 41
- 239000000956 alloy Substances 0.000 description 41
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid group Chemical group S(O)(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 34
- 239000007788 liquid Substances 0.000 description 23
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 15
- 238000001816 cooling Methods 0.000 description 15
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 15
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 15
- 230000001105 regulatory effect Effects 0.000 description 15
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 12
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 12
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 11
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 11
- 229910052725 zinc Inorganic materials 0.000 description 9
- CYEJMVLDXAUOPN-UHFFFAOYSA-N 2-dodecylphenol Chemical compound CCCCCCCCCCCCC1=CC=CC=C1O CYEJMVLDXAUOPN-UHFFFAOYSA-N 0.000 description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 6
- 235000019270 ammonium chloride Nutrition 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000011592 zinc chloride Substances 0.000 description 6
- 235000005074 zinc chloride Nutrition 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 description 3
- 235000011152 sodium sulphate Nutrition 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 238000003618 dip coating Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- TXUICONDJPYNPY-UHFFFAOYSA-N (1,10,13-trimethyl-3-oxo-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl) heptanoate Chemical compound C1CC2CC(=O)C=C(C)C2(C)C2C1C1CCC(OC(=O)CCCCCC)C1(C)CC2 TXUICONDJPYNPY-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910021626 Tin(II) chloride Inorganic materials 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007716 flux method Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 239000001119 stannous chloride Substances 0.000 description 1
- 235000011150 stannous chloride Nutrition 0.000 description 1
- 239000000758 substrate Substances 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C18/00—Alloys based on zinc
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating With Molten Metal (AREA)
Abstract
The invention belongs to the technical field of hot dip galvanizing, and provides a plating assistant agent for a hot dip galvanized aluminum magnesium alloy coating, a preparation method and a use method thereof, wherein the plating assistant agent for the hot dip galvanized aluminum magnesium alloy coating consists of the following components: 50-100 g/L of zinc sulfate, 80-150 g/L of ammonium sulfate, 20-60 g/L of tin sulfate, 1-10 g/L of rare earth sulfate, 0.5-2 g/L of surfactant and the balance of water. The plating assistant agent for the zinc-aluminum-magnesium alloy plating layer does not contain chloride salt, has a simple formula, does not generate smoke, does not change the conventional hot dip galvanizing process, is suitable for zinc-aluminum-magnesium alloy plating solution containing 0.2 to 11wt% of Al, 0 to 3wt% of Mg and 0 to 1wt% of RE, and can obtain the zinc-aluminum-magnesium alloy plating layer with good surface quality and excellent corrosion resistance by properly adjusting the proportion of each component of the plating assistant agent.
Description
Technical Field
The invention relates to the technical field of hot dip galvanizing, in particular to a plating assistant agent for a hot dip galvanized aluminum magnesium alloy plating layer, and a preparation method and a use method thereof.
Background
In order to enhance the corrosion resistance of steel materials, hot dip galvanization technology is one of the most commonly used methods of resistance to atmospheric corrosion. Through development of over three hundred years, the hot dip galvanizing technology has tremendous changes in both galvanizing technology and product quality requirements, a single pure zinc plating technology cannot meet the production and development requirements of people, and the developed novel alloy plating technology greatly prolongs the protection life of steel, wherein the zinc-aluminum-magnesium alloy plating can remarkably improve the corrosion resistance of steel materials compared with the pure zinc plating, and is one of the alloy plating technologies with the best corrosion resistance at present.
In the process of hot dip galvanizing aluminum magnesium alloy plating by adopting a flux method, plating assistance is one of the most critical steps, so that not only can the surface of steel be cleaned to form a plating assistance salt film, the steel subjected to oil and rust removal is prevented from being oxidized and rusted in the air before being immersed in zinc bath, but also the effect of activating the surface of a steel substrate can be achieved, the hot dip plating effect is remarkably improved, and the quality of the plating layer is improved. Patent CN115011898a discloses a leak-proof high-alumina hot dip galvanizing method, the plating assistant comprises ammonium chloride, zinc chloride, nickel chloride, citric acid and ethanol; the plating layer prepared by adopting the plating assistant agent can solve the problem of plating leakage on the surface of the plating layer under the condition of high-aluminum zinc bath, but the plating assistant agent comprises ammonium chloride, hydrogen chloride and ammonia gas can be decomposed and generated in the dip plating process, and the two gases meet in the air to generate ammonium chloride white smoke; on the other hand, chlorine ions in the plating assistant agent can react with aluminum in the zinc bath to generate cyan aluminum chloride gas; and is only suitable for zinc bath with aluminum content less than 0.2wt% and has limited application range. Patent CN114774821a discloses a process for hot dip galvanizing aluminum magnesium alloy coating, the plating assistant is mixed assistant of zinc chloride, aluminum chloride and magnesium chloride; although the plating assistant does not contain ammonium chloride, the plating assistant still contains a large amount of chloride salts such as zinc chloride, aluminum chloride gas can be generated in the hot dip plating process, and the pollution problem is not solved; the invention is also only applicable to zinc bath with aluminum content of 0.1wt% and magnesium content of 0.5wt%, and has limited application range. The technology only solves the problem of the conventional hot dip zinc aluminum magnesium alloy plating layer of the missed plating, is not applicable to alloy zinc bath with the aluminum content higher than 0.2 percent, and also still does not solve the problem of smoke pollution in the hot dip plating process due to the fact that the alloy zinc bath contains a large amount of chloride salt.
Therefore, the plating assistant agent for the hot-dip galvanized aluminum-magnesium alloy plating layer is researched and developed to solve the problems of plating omission, poor surface quality, smoke pollution and the like in the hot-dip galvanized aluminum-magnesium alloy plating layer, obtain the hot-dip galvanized aluminum-magnesium alloy plating layer with high corrosion resistance and good surface quality, does not generate smoke pollution in the hot-dip plating process, and has important significance and application value.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating, and a preparation method and a use method thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating, which comprises the following components in concentration:
50-100 g/L zinc sulfate; 80-150 g/L of ammonium sulfate; 20-60 g/L of tin sulfate; 1-10 g/L of rare earth sulfate; 0.5-2 g/L of surfactant; the balance being water.
Preferably, the rare earth sulfate comprises one or more of lanthanum sulfate, cerium sulfate, lanthanum cerium sulfate and yttrium sulfate.
Preferably, the surfactant comprises one or more of lauryl dimethyl betaine, fatty alcohol polyoxyethylene ether sodium sulfate and alkylphenol polyoxyethylene.
The invention also provides a preparation method of the plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating, which is to mix zinc sulfate, ammonium sulfate, tin sulfate, rare earth sulfate, surfactant and water to obtain the plating assistant agent.
The invention also provides a use method of the plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating, which comprises the steps of immersing the steel plating part into the plating assistant agent for plating assistant, and sequentially performing drying, hot dip plating and water cooling treatment to obtain the zinc aluminum magnesium alloy plating.
Preferably, the pH value of the plating assistant agent is adjusted to 3-5 before the steel plating piece is immersed in the plating assistant agent.
Preferably, before the steel plating part is subjected to plating assistance, degreasing and rust removal are sequentially carried out.
Preferably, the hot dip plating solution is zinc-aluminum-magnesium alloy plating solution, and the zinc-aluminum-magnesium alloy plating solution comprises 0.2-11% of Al, 0-3% of Mg, 0-1% of RE and the balance of Zn in percentage by mass.
Preferably, the plating assisting temperature is 25-45 ℃, and the plating assisting time is 10-300 s; the drying temperature is 100-120 ℃, and the drying time is 10-30 s; the temperature of the hot dip plating is 430-450 ℃, and the time of the hot dip plating is 50-70 s.
The beneficial effects of the invention include:
the plating assistant agent of the invention uses sulfate to replace chloride salts such as ammonium chloride, zinc chloride and the like, and no smoke is generated in the plating assistant process, thus avoiding smoke pollution; compared with chloride, the sulfate has lower price, can be used at normal temperature, does not need to be heated, and can effectively reduce the cost; the novel surfactant is adopted, the plating layer is tightly combined with the steel plating piece, and the phenomenon of plating leakage on the surface can be effectively prevented. The plating assistant agent of the invention can be widely applied to zinc-aluminum-magnesium alloy plating solutions with 0.2 to 11wt% of Al content, 0 to 3wt% of Mg and 0 to 1wt% of RE content. The plating assisting process provided by the invention is simple in flow, easy to operate, stable in solution, convenient for industrial production and preparation, and has great popularization and application potential, and the zinc-aluminum-magnesium alloy plating layer with good surface quality and excellent corrosion resistance can be obtained only by properly adjusting the proportion of each component without changing the conventional hot dip galvanizing process.
Drawings
FIG. 1 is a zinc-aluminum-magnesium alloy plating layer obtained in example 2.
Detailed Description
The invention provides a plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating, which comprises the following components in concentration:
50-100 g/L zinc sulfate; 80-150 g/L of ammonium sulfate; 20-60 g/L of tin sulfate; 1-10 g/L of rare earth sulfate; 0.5-2 g/L of surfactant; the balance being water.
The plating assistant for hot dip galvanizing aluminum magnesium alloy plating layer of the present invention contains 50-100 g/L zinc sulfate, preferably 60-90 g/L, more preferably 70-80 g/L.
The plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating layer of the present invention contains 80-150 g/L ammonium sulfate, preferably 90-130 g/L, more preferably 100-120 g/L.
The plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating layer of the present invention contains 20 to 60g/L tin sulfate, preferably 30 to 50g/L, more preferably 35 to 40g/L.
The plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating layer of the invention contains rare earth sulfate 1-10 g/L, preferably 2-8 g/L, more preferably 4-7 g/L.
The rare earth sulfate is preferably one or more of lanthanum sulfate, cerium sulfate, lanthanum cerium sulfate and yttrium sulfate.
The plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating of the present invention contains 0.5 to 2g/L of surfactant, preferably 0.7 to 1.5g/L, and more preferably 0.9 to 1.2g/L.
The surfactant is preferably one or more of lauryl dimethyl betaine, fatty alcohol polyoxyethylene ether sodium sulfate and alkylphenol polyoxyethylene ether; the fatty alcohol-polyoxyethylene ether is preferably AEO9; the alkylphenol ethoxylates are preferably dodecylphenol ethoxylates.
The invention also provides a preparation method of the plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating, which is to mix zinc sulfate, ammonium sulfate, tin sulfate, rare earth sulfate, surfactant and water to obtain the plating assistant agent.
In the present invention, the order of mixing is preferably to mix zinc sulfate, ammonium sulfate, tin sulfate, rare earth sulfate and water and then mix with a surfactant.
The invention also provides a use method of the plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating, which comprises the steps of immersing the steel plating part into the plating assistant agent for plating assistant, and sequentially performing drying, hot dip plating and water cooling treatment to obtain the zinc aluminum magnesium alloy plating.
Before the iron and steel plating part is immersed in the plating assistant agent, the pH value of the plating assistant agent is preferably adjusted to 3-5, and more preferably, the pH value is adjusted to 4; the pH-adjusting agent is preferably sulfuric acid, and the mass fraction of the sulfuric acid is preferably 90 to 98%, more preferably 94 to 96%.
Before the steel plating part is subjected to plating assistance, degreasing and rust removal are preferably carried out sequentially; the degreasing and deoiling agent is preferably NaOH solution, and the concentration of the NaOH solution is preferably 120-150 g/L, and more preferably 130-140 g/L; the rust removing agent is preferably an HCl solution, and the concentration of the HCl solution is preferably 15 to 20vol%, more preferably 16 to 18vol%.
The plating solution for hot dip plating is preferably zinc-aluminum-magnesium alloy plating solution, and the components of the zinc-aluminum-magnesium alloy plating solution are preferably 0.2-11% of Al, 0-3% of Mg, 0-1% of RE, the balance of Zn, more preferably 5-10% of Al, 1-2% of Mg, 0.5-1% of RE and the balance of Zn in percentage by mass.
RE in the zinc-aluminum-magnesium alloy plating solution is preferably one or more of La, ce and Pr.
The plating assisting temperature is preferably 25-45 ℃, more preferably 30-40 ℃, and even more preferably 33-37 ℃; the plating assisting time is preferably 10 to 300 seconds, more preferably 60 to 180 seconds, and still more preferably 80 to 120 seconds; the drying temperature is preferably 100 to 120 ℃, and more preferably 105 to 110 ℃; the drying time is preferably 10 to 30 seconds, more preferably 15 to 20 seconds; the temperature of the hot dip plating is preferably 430 to 450 ℃, and more preferably 435 to 440 ℃; the time for hot dip plating is preferably 50 to 70 seconds, more preferably 55 to 60 seconds.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
The mass fractions of the elements of the alloy liquid in the examples are as follows:
Zn-0.2Al represents 99.8% of Zn in the alloy liquid and 0.2% of Al in the alloy liquid;
zn-0.2Al-0.1Mg represents 99.7% of Zn and 0.2% of Al in the alloy liquid; the mass fraction of Mg is 0.1%;
Zn-5Al-0.1La represents 94.9% of Zn, 5% of Al and 0.1% of RE in the alloy liquid;
The mass fraction of Zn, al, mg, RE in the alloy liquid of the other examples is as described above.
Example 1
The plating assistant agent for hot dip zinc-aluminum alloy plating consists of 1L of water, 50g/L of zinc sulfate, 150g/L of ammonium sulfate, 20g/L of tin sulfate, 1g/L of lanthanum sulfate, 1g/L of cerium sulfate, 1g/L of lanthanum cerium sulfate, 1g/L of yttrium sulfate and 0.5g/L of lauryl dimethyl betaine.
Regulating the pH value of the plating assistant agent to 3 by using sulfuric acid with the mass fraction of 98%, degreasing and derusting the steel plate by adopting a 150g/L NaOH solution and a 20vol% HCl solution respectively, and immersing the treated steel plate into the plating assistant agent at 40 ℃ for plating assistance for 90s; taking out the steel plate, and drying at 100 ℃ for 20s; immersing in Zn-0.2Al alloy liquid, and hot dip coating at 440 deg.C for 50s; and taking out the steel plate, and performing water cooling treatment to obtain the zinc-aluminum alloy coated steel plate.
Example 2
The plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating is composed of 1L of water, 60g/L of zinc sulfate, 140g/L of ammonium sulfate, 30g/L of tin sulfate, 2g/L of lanthanum sulfate, 2g/L of cerium sulfate, 2g/L of lanthanum cerium sulfate, 2g/L of yttrium sulfate and 0.5g/L of fatty alcohol polyoxyethylene ether AEO 9.
The pH value of the plating assistant agent is regulated to 5 by sulfuric acid with the mass fraction of 98%, a 150g/L NaOH solution and a 20vol% HCl solution are respectively adopted to degrease, remove oil and rust, the treated steel plate is immersed into the plating assistant agent at 25 ℃ for plating assistant for 90 seconds, the steel plate is taken out, dried at 120 ℃ for 20 seconds, immersed into Zn-0.2Al-0.1Mg alloy liquid, hot dip plated at 440 ℃ for 60 seconds, and the steel plate is taken out and then water-cooled to obtain the zinc-aluminum-magnesium alloy plated steel plate.
The zinc-aluminum-magnesium alloy plating layer obtained by plating assistance and hot dip plating in the embodiment is shown in figure 1.
Example 3
The plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating layer is composed of 1L water, 70g/L zinc sulfate, 130g/L ammonium sulfate, 40g/L tin sulfate, 4g/L lanthanum sulfate, 4g/L cerium sulfate and 0.5g/L fatty alcohol polyoxyethylene ether sodium sulfate.
Regulating the pH value of the plating assistant agent to 3.5 by using sulfuric acid with the mass fraction of 98%, degreasing and derusting the steel plate by adopting a 150g/L NaOH solution and a 20vol% HCl solution respectively, and immersing the treated steel plate into the plating assistant agent at 45 ℃ for plating assistant for 180 seconds; taking out the steel plate, and drying at 120 ℃ for 20s; immersing in Zn-5Al-0.1Mg alloy liquid, and hot dip plating at 430 ℃ for 70s; and taking out the steel plate, and performing water cooling treatment to obtain the zinc-aluminum-magnesium alloy coated steel plate.
Example 4
The plating assistant agent for hot dip zinc-aluminum alloy plating consists of 1L of water, 80g/L of zinc sulfate, 120g/L of ammonium sulfate, 50g/L of tin sulfate, 4g/L of lanthanum cerium sulfate, 4g/L of yttrium sulfate and 0.5g/L of dodecylphenol polyoxyethylene ether.
The pH value of the plating assistant agent is regulated to 4 by sulfuric acid with the mass fraction of 98%, a 150g/L NaOH solution and a 20vol% HCl solution are respectively adopted to degrease, remove oil and rust, the treated steel plate is immersed into the plating assistant agent at 30 ℃ for plating assistant for 90 seconds, the steel plate is taken out, dried at 110 ℃ for 30 seconds, immersed into Zn-5Al-0.1La alloy liquid, hot dip plated at 440 ℃ for 60 seconds, and the steel plate is taken out and then water cooled to obtain the zinc-aluminum alloy plated steel plate.
Example 5
The plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating is composed of 1L of water, 90g/L of zinc sulfate, 110g/L of ammonium sulfate, 60g/L of tin sulfate, 10g/L of lanthanum sulfate and 0.5g/L of fatty alcohol polyoxyethylene ether AEO 9.
The pH value of the plating assistant agent is regulated to 4.5 by sulfuric acid with the mass fraction of 98%, a 150g/L NaOH solution and a 20vol% HCl solution are respectively adopted to carry out degreasing, degreasing and rust removal treatment on the steel plate, the treated steel plate is immersed into the plating assistant agent at 40 ℃ to carry out plating assistant for 120s, the steel plate is taken out, dried at 120 ℃ for 20s, immersed into Zn-5Al-0.1Mg-0.1Ce alloy liquid, hot dip plated at 450 ℃ for 55s, and the steel plate is taken out and then water-cooled to obtain the zinc-aluminum-magnesium alloy plated steel plate.
Example 6
The plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating layer is composed of 1L water, 100g/L zinc sulfate, 100g/L ammonium sulfate, 60g/L tin sulfate, 10g/L cerium sulfate and 0.5g/L dodecylphenol polyoxyethylene ether.
The pH value of the plating assistant agent is regulated to 5 by sulfuric acid with the mass fraction of 98%, a 150g/L NaOH solution and a 20vol% HCl solution are respectively adopted to degrease, remove oil and rust, the treated steel plate is immersed into the plating assistant agent at 30 ℃ for plating assistant for 90 seconds, the steel plate is taken out, dried at 120 ℃ for 30 seconds, immersed into Zn-11Al-0.1Mg alloy liquid, hot dip plated at 450 ℃ for 60 seconds, and water cooling treatment is carried out after the steel plate is taken out, so that the zinc-aluminum-magnesium alloy plated steel plate is obtained.
Example 7
The plating assistant agent for hot dip zinc-aluminum alloy plating consists of 1L of water, 90g/L of zinc sulfate, 90g/L of ammonium sulfate, 50g/L of tin sulfate, 10g/L of lanthanum cerium sulfate and 1g/L of fatty alcohol polyoxyethylene ether AEO 9.
The pH value of the plating assistant agent is regulated to 4 by sulfuric acid with the mass fraction of 98%, a 150g/L NaOH solution and a 20vol% HCl solution are respectively adopted to degrease, remove oil and rust, the treated steel plate is immersed into the plating assistant agent at 35 ℃ for plating assistance for 60s, the steel plate is taken out, dried at 110 ℃ for 30s, immersed into Zn-11Al-0.1Pr alloy liquid, hot dip plated for 60s at 440 ℃, and water cooling treatment is carried out after the steel plate is taken out, thus obtaining the zinc-aluminum alloy plated steel plate.
Example 8
The plating assistant agent for hot dip zinc-aluminum alloy plating consists of 1L of water, 80g/L of zinc sulfate, 80g/L of ammonium sulfate, 40g/L of tin sulfate, 10g/L of yttrium sulfate, 1g/L of fatty alcohol polyoxyethylene ether AEO9 and 1g/L of dodecylphenol polyoxyethylene ether.
The pH value of the plating assistant agent is regulated to 4.5 by sulfuric acid with the mass fraction of 98%, a 150g/L NaOH solution and a 20vol% HCl solution are respectively adopted to carry out degreasing, degreasing and rust removal treatment on the steel plate, the treated steel plate is immersed into the plating assistant agent at 25 ℃ to carry out plating assistant for 120s, the steel plate is taken out, dried at 120 ℃ for 20s, immersed into Zn-11Al-0.5Ce alloy liquid, hot dip plating is carried out for 60s at 440 ℃, and water cooling treatment is carried out after the steel plate is taken out, thus obtaining the zinc-aluminum alloy plated steel plate.
Example 9
The plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating layer is composed of 1L water, 70g/L zinc sulfate, 110g/L ammonium sulfate, 30g/L tin sulfate, 5g/L lanthanum sulfate and 2g/L lauryl dimethyl betaine.
The pH value of the plating assistant agent is regulated to 5 by sulfuric acid with the mass fraction of 98%, a 150g/L NaOH solution and a 20vol% HCl solution are respectively adopted to degrease, remove oil and rust, the treated steel plate is immersed into the plating assistant agent at 30 ℃ for assistant plating for 300s, the steel plate is taken out, dried at 120 ℃ for 20s, immersed into Zn-5Al-1Mg alloy liquid, hot dip plated at 440 ℃ for 60s, and water cooling treatment is carried out after the steel plate is taken out, so that the zinc-aluminum-magnesium alloy plated steel plate is obtained.
Example 10
The plating assistant agent for hot dip zinc-aluminum alloy plating consists of 1L of water, 60g/L of zinc sulfate, 120g/L of ammonium sulfate, 20g/L of tin sulfate, 5g/L of cerium sulfate and 2g/L of fatty alcohol polyoxyethylene ether AEO 9.
The pH value of the plating assistant agent is regulated to 3 by sulfuric acid with the mass fraction of 98%, a 150g/L NaOH solution and a 20vol% HCl solution are respectively adopted to degrease, remove oil and rust, the treated steel plate is immersed into the plating assistant agent at 40 ℃ for plating assistant for 60s, the steel plate is taken out, dried at 100 ℃ for 30s, immersed into Zn-10Al-1La alloy liquid, hot dip plated for 70s at 440 ℃, and water cooling treatment is carried out after the steel plate is taken out, thus obtaining the zinc-aluminum alloy plated steel plate.
Example 11
The plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating is composed of 1L of water, 50g/L of zinc sulfate, 100g/L of ammonium sulfate, 60g/L of tin sulfate, 2g/L of lanthanum cerium sulfate and 2g/L of fatty alcohol polyoxyethylene ether AEO 9.
The pH value of the plating assistant agent is regulated to 3.5 by sulfuric acid with the mass fraction of 98%, a 150g/L NaOH solution and a 20vol% HCl solution are respectively adopted to degrease, degrease and derusting the steel plate, the treated steel plate is immersed into the plating assistant agent for assistant plating for 30s at the temperature of 40 ℃, the steel plate is taken out, dried for 20s at the temperature of 120 ℃, immersed into Zn-10Al-2Mg alloy liquid, hot dip plated for 60s at the temperature of 440 ℃, and water cooling treatment is carried out after the steel plate is taken out, so that the zinc-aluminum-magnesium alloy plated steel plate is obtained.
Example 12
The plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating layer is composed of 1L of water, 100g/L of zinc sulfate, 80g/L of ammonium sulfate, 30g/L of tin sulfate, 5g/L of yttrium sulfate and 2g/L of dodecylphenol polyoxyethylene ether.
The pH value of the plating assistant agent is regulated to 4.5 by sulfuric acid with the mass fraction of 98%, a 150g/L NaOH solution and a 20vol% HCl solution are respectively adopted to carry out degreasing, degreasing and rust removal treatment on the steel plate, the treated steel plate is immersed into the plating assistant agent at 30 ℃ to carry out plating assistant for 120s, the steel plate is taken out, dried at 120 ℃ for 20s, immersed into Zn-6Al-3Mg-1La alloy liquid, hot dip plated at 440 ℃ for 60s, and the steel plate is taken out and then water-cooled to obtain the zinc-aluminum-magnesium alloy plated steel plate.
Comparative example 1
The conventional plating assistant consists of 1L of water, 100g/L of zinc chloride and 150g/L of ammonium chloride.
Immersing the steel plate subjected to degreasing, degreasing and rust removal in a plating assistant agent at 40 ℃ for plating assistant for 90 seconds, taking out the steel plate, drying at 120 ℃ for 20 seconds, immersing in Zn-0.2Al alloy liquid, hot dip plating at 440 ℃ for 50 seconds, taking out the steel plate, and performing water cooling treatment to obtain the zinc-aluminum alloy coated steel plate.
Comparative example 2
The conventional plating assistant consists of 1L of water, 100g/L of zinc chloride, 10g/L of sodium fluoride, 40g/L of potassium chloride and 10g/L of stannous chloride.
Immersing the steel plate subjected to degreasing, degreasing and rust removal in a plating assistant agent at 30 ℃ for plating assistant for 120 seconds, taking out the steel plate, drying for 20 seconds at 120 ℃, immersing in Zn-6Al-3Mg-1La alloy liquid, hot dip plating for 60 seconds at 440 ℃, taking out the steel plate, and performing water cooling treatment to obtain the zinc-aluminum-magnesium alloy plated steel plate.
Comparative example 3
The conventional plating assistant consists of 1L of water, 20g/L of zinc sulfate, 80g/L of ammonium sulfate, 30g/L of tin sulfate, 5g/L of yttrium sulfate and 2g/L of dodecylphenol polyoxyethylene ether.
The pH value of the plating assistant agent is regulated to 4.5 by sulfuric acid with the mass fraction of 98%, the steel plate subjected to degreasing, degreasing and rust removal is immersed into the plating assistant agent at 30 ℃ for assistant plating for 120s, the steel plate is taken out, dried at 120 ℃ for 20s, immersed into Zn-6Al-3Mg-1La alloy liquid, hot dip plated at 440 ℃ for 60s, and water cooling treatment is carried out after the steel plate is taken out, so that the zinc-aluminum-magnesium alloy plated steel plate is obtained.
Comparative example 4
The conventional plating assistant consists of 1L of water, 100g/L of zinc sulfate, 200g/L of ammonium sulfate, 30g/L of tin sulfate, 5g/L of yttrium sulfate and 2g/L of dodecylphenol polyoxyethylene ether.
The pH value of the plating assistant agent is regulated to 4.5 by sulfuric acid with the mass fraction of 98%, the steel plate subjected to degreasing, degreasing and rust removal is immersed into the plating assistant agent at 30 ℃ for assistant plating for 120s, the steel plate is taken out, dried at 120 ℃ for 20s, immersed into Zn-6Al-3Mg-1La alloy liquid, hot dip plated at 440 ℃ for 60s, and water cooling treatment is carried out after the steel plate is taken out, so that the zinc-aluminum-magnesium alloy plated steel plate is obtained.
Comparative example 5
The conventional plating assistant consists of 1L of water, 100g/L of zinc sulfate, 80g/L of ammonium sulfate, 5g/L of tin sulfate, 5g/L of yttrium sulfate and 2g/L of dodecylphenol polyoxyethylene ether.
The pH value of the plating assistant agent is regulated to 4.5 by sulfuric acid with the mass fraction of 98%, the steel plate subjected to degreasing, degreasing and rust removal is immersed into the plating assistant agent at 30 ℃ for assistant plating for 120s, the steel plate is taken out, dried at 120 ℃ for 20s, immersed into Zn-6Al-3Mg-1La alloy liquid, hot dip plated at 440 ℃ for 60s, and water cooling treatment is carried out after the steel plate is taken out, so that the zinc-aluminum-magnesium alloy plated steel plate is obtained.
The appearances of the plating aids of examples 1 to 12 and comparative examples 1 to 5, the amount of fumes, the amount of floating slag, the condition of missing plating during hot dip plating, and the surface quality of the obtained alloy plating were observed and recorded, respectively, and the plating-aiding and hot dip plating effects were summarized to obtain table 1.
TABLE 1 Table 1 summary of the plating aid and the dip coating effect of the hot dip galvanization aluminum magnesium alloy plating aid
As can be seen from table 1: the plating assistant agents of examples 1 to 12 were almost colorless in appearance, and only a small amount of dross was produced during the hot dip plating, and no smoke was produced at all, and the surface of the alloy plating layer was complete, smooth and free of particles, and no plating leakage occurred. The plating assisting effect and the surface quality of the alloy plating layer are good, and the method can be applied to large-scale industry.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (9)
1. A plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating, characterized by comprising the following components in concentration:
2. the plating assistant according to claim 1, wherein the rare earth sulfate comprises one or more of lanthanum sulfate, cerium sulfate, lanthanum cerium sulfate, and yttrium sulfate.
3. The plating assistant according to claim 1 or 2, wherein the surfactant comprises one or more of lauryl dimethyl betaine, fatty alcohol polyoxyethylene ether, sodium fatty alcohol polyoxyethylene ether sulfate and alkylphenol polyoxyethylene ether.
4. A method for preparing a plating assistant for hot dip galvanizing aluminum magnesium alloy plating according to any one of claims 1-3, wherein zinc sulfate, ammonium sulfate, tin sulfate, rare earth sulfate, surfactant and water are mixed to obtain the plating assistant.
5. The method of using the plating assistant agent for hot dip galvanizing aluminum magnesium alloy plating layer according to any one of claims 1 to 3, characterized in that the steel plating piece is immersed in the plating assistant agent for plating and then is sequentially dried, hot dip plated and water cooled to obtain the zinc aluminum magnesium alloy plating layer.
6. The method of claim 5, wherein the pH of the plating aid is adjusted to 3-5 prior to immersing the iron and steel plating article in the plating aid.
7. The method of claim 5 or 6, wherein the steel plating member is subjected to degreasing, degreasing and rust removal in sequence before being subjected to plating assistance.
8. The use method according to claim 7, wherein the hot dip plating solution is a zinc-aluminum-magnesium alloy plating solution, and the zinc-aluminum-magnesium alloy plating solution comprises 0.2-11% of Al, 0-3% of Mg, 0-1% of RE and the balance of Zn in percentage by mass.
9. The use method according to claim 8, wherein the plating assisting temperature is 25-45 ℃ and the plating assisting time is 10-300 s; the drying temperature is 100-120 ℃, and the drying time is 10-30 s; the temperature of the hot dip plating is 430-450 ℃, and the time of the hot dip plating is 50-70 s.
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| CN101575691A (en) * | 2009-05-22 | 2009-11-11 | 昆明理工大学 | Multifunctional plating assistant agent used for hot dipping |
| JP2010090407A (en) * | 2008-10-03 | 2010-04-22 | Nippon Parkerizing Co Ltd | Liquid for treating metal surface, and method for treating metal surface |
| CN106399889A (en) * | 2016-11-29 | 2017-02-15 | 国网山东省电力公司电力科学研究院 | Plating adjuvant for hot dipping of zinc-aluminum-magnesium alloy or zinc-aluminum-magnesium rare earth alloy |
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| JP2010090407A (en) * | 2008-10-03 | 2010-04-22 | Nippon Parkerizing Co Ltd | Liquid for treating metal surface, and method for treating metal surface |
| CN101575691A (en) * | 2009-05-22 | 2009-11-11 | 昆明理工大学 | Multifunctional plating assistant agent used for hot dipping |
| CN106399889A (en) * | 2016-11-29 | 2017-02-15 | 国网山东省电力公司电力科学研究院 | Plating adjuvant for hot dipping of zinc-aluminum-magnesium alloy or zinc-aluminum-magnesium rare earth alloy |
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| 热浸镀锌助镀剂的研究现状;程玉杰等;《热加工工艺》;20190630;第48卷(第12期);第12-15页 * |
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