CN110359036A - A kind of phosphating process of steel pipe - Google Patents
A kind of phosphating process of steel pipe Download PDFInfo
- Publication number
- CN110359036A CN110359036A CN201910803179.7A CN201910803179A CN110359036A CN 110359036 A CN110359036 A CN 110359036A CN 201910803179 A CN201910803179 A CN 201910803179A CN 110359036 A CN110359036 A CN 110359036A
- Authority
- CN
- China
- Prior art keywords
- parts
- phosphating
- steel pipe
- liter
- weight
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 33
- 239000010959 steel Substances 0.000 title claims abstract description 33
- 230000008569 process Effects 0.000 title claims abstract description 31
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 13
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 12
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000908 ammonium hydroxide Substances 0.000 claims abstract description 8
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 6
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 6
- 239000011787 zinc oxide Substances 0.000 claims abstract description 6
- 238000012545 processing Methods 0.000 claims abstract description 5
- 238000005406 washing Methods 0.000 claims abstract description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 4
- PPSSQRUPSRPZON-UHFFFAOYSA-N nitrobenzene;sodium Chemical compound [Na].[O-][N+](=O)C1=CC=CC=C1 PPSSQRUPSRPZON-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000011684 sodium molybdate Substances 0.000 claims abstract description 3
- 235000015393 sodium molybdate Nutrition 0.000 claims abstract description 3
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims abstract description 3
- HRKQOINLCJTGBK-UHFFFAOYSA-N dihydroxidosulfur Chemical compound OSO HRKQOINLCJTGBK-UHFFFAOYSA-N 0.000 claims description 8
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- FHHJDRFHHWUPDG-UHFFFAOYSA-N peroxysulfuric acid Chemical compound OOS(O)(=O)=O FHHJDRFHHWUPDG-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 239000011775 sodium fluoride Substances 0.000 claims description 4
- 235000013024 sodium fluoride Nutrition 0.000 claims description 4
- MFXMOUUKFMDYLM-UHFFFAOYSA-L zinc;dihydrogen phosphate Chemical compound [Zn+2].OP(O)([O-])=O.OP(O)([O-])=O MFXMOUUKFMDYLM-UHFFFAOYSA-L 0.000 claims description 4
- 239000003995 emulsifying agent Substances 0.000 claims description 3
- 244000248349 Citrus limon Species 0.000 claims 1
- 235000005979 Citrus limon Nutrition 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 10
- 229910002651 NO3 Inorganic materials 0.000 abstract description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 abstract description 3
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 3
- 231100001261 hazardous Toxicity 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 38
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 18
- 229910019142 PO4 Inorganic materials 0.000 description 14
- 238000005260 corrosion Methods 0.000 description 9
- 229910052739 hydrogen Inorganic materials 0.000 description 9
- 239000001257 hydrogen Substances 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- -1 corrosion inhibiter Substances 0.000 description 7
- 238000005554 pickling Methods 0.000 description 6
- 238000007127 saponification reaction Methods 0.000 description 6
- 239000011701 zinc Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 5
- 239000010452 phosphate Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 4
- 230000028161 membrane depolarization Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000000872 buffer Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229910001448 ferrous ion Inorganic materials 0.000 description 3
- 239000011964 heteropoly acid Substances 0.000 description 3
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000536 complexating effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- DHRLEVQXOMLTIM-UHFFFAOYSA-N phosphoric acid;trioxomolybdenum Chemical compound O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.OP(O)(O)=O DHRLEVQXOMLTIM-UHFFFAOYSA-N 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000012085 test solution Substances 0.000 description 2
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 description 2
- 229910000165 zinc phosphate Inorganic materials 0.000 description 2
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001450 anions Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 229910000366 copper(II) sulfate Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910001447 ferric ion Inorganic materials 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 description 1
- VLAPMBHFAWRUQP-UHFFFAOYSA-L molybdic acid Chemical compound O[Mo](O)(=O)=O VLAPMBHFAWRUQP-UHFFFAOYSA-L 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- AMWVZPDSWLOFKA-UHFFFAOYSA-N phosphanylidynemolybdenum Chemical compound [Mo]#P AMWVZPDSWLOFKA-UHFFFAOYSA-N 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000005837 radical ions Chemical class 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 238000012795 verification 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
- C23C22/06—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 acidic solutions with pH less than 6
- C23C22/40—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 acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
- C23C22/42—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 acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates containing also phosphates
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 kind of phosphating process of steel pipe, are related to steel pipe treatment process comprising following steps: S1, oil removing, processing of rust removing；S2, washing；S3, phosphorating treatment；S4 is dry；According to parts by weight, every liter of phosphating solution includes following components: 30-40 parts of phosphoric acid；20-25 parts of zinc oxide；0.2-0.3 parts of sodium chlorate；0.2-0.3 parts of sodium molybdate；0.2-0.4 parts of m-nitrobenzene sodium sulfonate；0.5-1.0 parts of phosphatization auxiliary agent；Ammonium hydroxide adjusts pH to 2.0-3.5.The invention has the following advantages that passing through the combination and cooperation of each component in system, so that the phosphating process is just able to carry out at normal temperature, and phosphating solution is without harmful substances such as nitrate, nitrite, heavy metals, it is pollution-free to operating environment, non-hazardous to operator.
Description
Technical field
The present invention relates to steel pipe treatment process, more specifically, it relates to a kind of phosphating process of steel pipe.
Background technique
Phosphatization is the process of a kind of chemistry and electrochemical reaction formation phosphate chemical conversion film, the phosphate of the formation
Conversion film is referred to as phosphating coat.The purpose of phosphatization is mainly: providing protection to parent metal, prevents metal quilt to a certain extent
Corrosion；For preceding bottoming of painting, the adhesive force and anti-corrosion capability of paint film layer are improved.
Publication No. is that the Chinese patent of CN109013704A discloses a kind of seamless steel pipe manufacture craft comprising following step
It is rapid: a. heating；B. it perforates；C. pickling processes pickling processes: are carried out to materials in the tube using pickling solution；D. phosphorating treatment: after pickling
Materials in the tube carry out phosphorating treatment the step of in, using phosphating solution to materials in the tube carry out phosphorating treatment；E. saponification process: saponification liquor is used
Saponification process is carried out to materials in the tube；F. slow cooling operates；G. cold rolling；H. it anneals；I. verification operation；J. it aligns；K. it cuts: it will be aligned
Materials in the tube afterwards are cut to conform to the steel pipe of specification length.Wherein, pickling solution is the sulfuric acid solution that mass fraction is 18-22%, acid
Washing temperature is 40-60 DEG C, and pickling time is 20-40 minutes；In phosphating solution comprising concentration be 40g/L zinc dihydrogen phosphate and
The zinc nitrate of 55g/L, phosphatization temperature are 50-75 DEG C, and phosphorization treatment time is 8-15 minutes；Saponification liquor includes that concentration is 80g/L
Odium stearate, saponification temperature be 60-75 DEG C, saponification time be more than or equal to 5 minutes.
In above-mentioned technical proposal, parkerized process requirement carries out under 50-75 DEG C of heating condition, on the one hand to energy
The consumption in source is larger, on the other hand causes temperature in processing workshop higher, so that the working environment of staff is more severe, has
It is to be modified.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of phosphating process of steel pipe, Neng Gou
Phosphatization is carried out to steel pipe under room temperature.
To achieve the above object, the present invention provides the following technical scheme that
A kind of phosphating process of steel pipe, includes the following steps,
S1, oil removing, processing of rust removing；
S2, washing；
S3, phosphorating treatment；
S4 is dry；
According to parts by weight, every liter of phosphating solution includes following components:
Ammonium hydroxide adjusts pH to 2.0-3.5.
By using above-mentioned technical proposal, phosphoric acid and zinc oxide are main film forming substance, before phosphorating treatment, in phosphating solution
A series of ionization, the hydrolysis dynamic equilibrium carried out therewith there are the reaction of the three-level ionization equilibrium of free phosphoric acid and zinc oxide is anti-
It answers.After steel pipe immerses phosphating solution, i.e., the anode oxidation process of Fe occurs on surface, generates Fe (H2PO4)2、Zn(H2PO4)2、
Zn3(PO4)2·4H2O and Zn2Fe(PO4)2·4H2The substances such as O, when the concentration that phosphating reaction proceeds to these substances respectively reaches
When respective solubility product, the phosphate of these indissolubles just forms nucleus on the active site of steel tube surface, and centered on nucleus
Crystal is formed constantly increasing to extension around surface, until steel tube surface forms continuous, uniform phosphating coat.
Sodium chlorate has stronger curing, plays a part of accelerating cathodic depolarization, can speed up the film forming speed of phosphatization
Rate, and significantly improve the corrosion resistance of phosphating coat.Sodium molybdate annexs the effect of passivation and purification, can be improved phosphorus as promotor
Change the corrosion resistance of film.Oxidant, corrosion inhibiter, complexing agent and the work for reducing film layer weight can be played simultaneously in parkerizing process
With.BecauseIt can be condensed to form diversified condensation polyacid radical ion by the polyhedral concurrent or total rib of oxygen,
In the polyacid root anion structure of molybdenum, basic structural unit is the MoO of the octahedral bodily form6When it is reacted with orthophosphates,Just
Tetrahedron is immediately by MoO6Octahedron surrounds, i.e., inserts hetero atom at polyacid radical ion center and form a kind of heteropoly acid: phosphorus molybdenum
Acid (H3PO4·12MoO3·30H2O).Coordination MoO of the molybdenum in phosphomolybdic acid3More than in free molybdic acid or regular molybdate in molecule
In it is much active；In the solution containing inorganic acid, phosphate and aforementioned phosphomolybdic acid reaction generate the salt of complexing phosphomolybdic acid.And
Phosphomolybdate has strong oxidation to many inorganic compounds and organic compound.Exactly this strong oxidation, accelerates
The anode oxidation process of steel tube surface, while phosphomolybdate ion (heteropoly acid ion), which is complexed, to promote cathode surface to go to pole
Change, play synergistic function with sodium chlorate, and improve micro-current density, anode surface is partly closed, thus make cathode and
Annode area greatly accelerates phosphatization speed than increasing.Heteropoly acid is adsorbed on steel tube surface or in phosphatization membrane micropore, as a result
Finer and close arrangement is generated, so as to improve the quality of phosphating coat.
M-nitrobenzene sodium sulfonate and sodium chlorate are used in combination, and can promote nucleus growth well, while improving phosphating coat
Stability.By ammonium hydroxide adjustment and control system pH to control free acidity, avoid liberation of hydrogen obvious, phosphating coat is coarse or liberation of hydrogen becomes
Phenomenon weak, that phosphatization is lepthymenia.By the combination and cooperation of each component in system, so that the phosphating process at normal temperature can be into
Row, and phosphating solution is without the harmful substances such as nitrate, nitrite, heavy metal, it is pollution-free to operating environment, to operator without
Harm.
Further, according to parts by weight, every liter of phosphating solution includes 25-30 parts of zinc dihydrogen phosphate.
By using above-mentioned technical proposal, zinc dihydrogen phosphate is while participating in phosphorization, additionally it is possible to play stablize it is molten
Liquid pH value, the effect for adjusting total acidity.
Further, according to parts by weight, every liter of phosphating solution includes 0.1-0.3 parts of sodium fluoride.
By using above-mentioned technical proposal, sodium fluoride, which has, buffers and promotes double action, since fluorine ion has very greatly
Elecrtonegativity, easily in the form of covalent bond in conjunction with hydrogen ion generate hydrofluoric acid, when solution free acidity decline when discharge
Hydrogen ion has very strong buffer function, while also reducing the ultra-voltage of hydrogen, plays the role of cathodic depolarization, to forming a film
Journey plays facilitation.
Further, the phosphatization auxiliary agent uses citric acid.
By using above-mentioned technical proposal, in parkerizing process, part ferrous ion can generate trivalent under oxidation
Iron ion, and then generate Fe (PO4)3Sediment influences phosphorization filming speed and quality of forming film.Citric acid can have as compounding agent
Effect complexing ferric ion, reduces sediment.Meanwhile the faintly acid of citric acid also can increase the active site of body surface, promote phosphorus
The initial stage for changing nucleus is formed, to play the role of refining film layer, so that phosphating coat is finer and close.
Further, according to parts by weight, every liter of phosphating solution includes 0.1-0.2 parts of 1- spicy thioalcohol.
By using above-mentioned technical proposal, 1- spicy thioalcohol has good wetability and adsorptivity, improves into film uniformity
While, additionally it is possible to effectively improve the thickness and its corrosion resistance of phosphating coat.In addition, 1- spicy thioalcohol can also cooperate with citric acid to reduce
Sediment, to further increase phosphorization film quality.
Further, according to parts by weight, every liter of phosphating solution includes 0.3-0.5 parts of emulsifier op-10.
By using above-mentioned technical proposal, OP-10 can align absorption in phosphating solution and metal interface, reduce steel pipe table
Face tension improves phosphating solution to the wetability of steel tube surface, to reduce the requirement of pre-treatment, accelerates film forming.Can also it press down simultaneously
The precipitation of hydrogen manufacturing slows down the reduction of General Acidity in Phosphating Solution, plays the role of stable phosphating solution.In addition, OP-10 can also improve yin
Pole polarization, help to obtain and crystallizes fine and closely woven phosphating coat, to improve the compactness of phosphating coat.In addition, in the effect of 1- spicy thioalcohol
Under, it can be effectively reduced the additive amount of OP-10.
Further, according to parts by weight, every liter of phosphating solution includes 0.1-0.2 parts of hydroxyl sulfate.
By using above-mentioned technical proposal, the iron ion that oxidation generates can be reduced into ferrous ion by hydroxyl sulfate, be had
Conducive to P film Zn2Fe(PO4)2·4H2The high phosphating coat of O ingredient generates, to improve the quality of phosphating coat.Meanwhile hydroxyl sulfate is also
The electrode potential that Fe can be reduced by Coordination Adsorption, causes Fe to have bigger dissolution trend, to accelerate the molding speed of phosphating coat
Degree.
In conclusion the invention has the following advantages:
1. phosphoric acid and zinc oxide are main film forming substance, before phosphorating treatment, there are the three-levels of free phosphoric acid in phosphating solution
Ionization equilibrium reaction and zinc oxide carry out therewith a series of ionization, hydrolysis dynamic equilibrium reaction.When steel pipe immerses phosphating solution
Afterwards, i.e., the anode oxidation process of Fe occurs on surface, generates Fe (H2PO4)2、Zn(H2PO4)2、Zn3(PO4)2·4H2O and Zn2Fe
(PO4)2·4H2The substances such as O, when the concentration that phosphating reaction proceeds to these substances respectively reaches respective solubility product, these are difficult
Molten phosphate just forms nucleus on the active site of steel tube surface, and constantly to extension increasing around surface centered on nucleus
It grows and forms crystal, until steel tube surface forms continuous, uniform phosphating coat.
2. sodium chlorate has stronger curing, plays a part of accelerating cathodic depolarization, can speed up the film forming of phosphatization
Rate, and significantly improve the corrosion resistance of phosphating coat.M-nitrobenzene sodium sulfonate and sodium chlorate are used in combination, and can promote well
Nucleus growth, while improving the stability of phosphating coat.By ammonium hydroxide adjustment and control system pH to control free acidity, avoid liberation of hydrogen bright
Aobvious, phosphating coat is coarse or liberation of hydrogen tends to become weak, the phenomenon that phosphatization is lepthymenia.By the combination and cooperation of each component in system, so that should
Phosphating process is just able to carry out at normal temperature, and phosphating solution is free of the harmful substances such as nitrate, nitrite, heavy metal, to behaviour
Make environmental nonpollution, non-hazardous to operator.
3. sodium fluoride, which has, buffers and promote double action, since fluorine ion has very big elecrtonegativity, easily with covalent
The form of key generates hydrofluoric acid in conjunction with hydrogen ion, and the release hydrogen ions when the decline of the free acidity of solution have very strong slow
Punching effect, while the ultra-voltage of hydrogen is also reduced, play the role of cathodic depolarization, facilitation is played to film forming procedure.
4.1- spicy thioalcohol has good wetability and adsorptivity, while raising into film uniformity, additionally it is possible to effectively mention
The thickness and its corrosion resistance of high phosphating coat.In addition, 1- spicy thioalcohol can also cooperate with citric acid to reduce sediment, to further increase phosphorus
Change film quality.
5.OP-10 can align absorption in phosphating solution and metal interface, reduce steel tube surface tension, improve phosphating solution pair
The wetability of steel tube surface accelerates film forming to reduce the requirement of pre-treatment.The precipitation that may also suppress hydrogen simultaneously, slows down phosphatization
Stable phosphating solution is played the role of in the reduction of liquid total acidity.In addition, OP-10 can also improve cathodic polarization, it help to obtain knot
Brilliant fine and closely woven phosphating coat, to improve the compactness of phosphating coat.In addition, can be effectively reduced OP-10 under the action of 1- spicy thioalcohol
Additive amount.
6. the iron ion that oxidation generates can be reduced into ferrous ion by hydroxyl sulfate, be conducive to P film Zn2Fe(PO4)2·
4H2The high phosphating coat of O ingredient generates, to improve the quality of phosphating coat.Meanwhile hydroxyl sulfate can also be reduced by Coordination Adsorption
The electrode potential of Fe causes Fe to have bigger dissolution trend, to accelerate the shaping speed of phosphating coat.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
Below in conjunction with drawings and examples, invention is further described in detail.
Embodiment
Embodiment 1
A kind of phosphating process of steel pipe, as shown in Figure 1, comprising the following steps:
S1, oil removing, processing of rust removing；
S2, washing；
S3, phosphorating treatment；
S4 is dry；
According to parts by weight, every liter of phosphating solution component is as shown in table 1, and adjusts pH to 2.0 using ammonium hydroxide.
Wherein, phosphatization auxiliary agent uses citric acid.
Embodiment 2
The difference from embodiment 1 is that according to parts by weight, every liter of phosphating solution component is as shown in table 1, and use ammonium hydroxide tune
Save pH to 3.0.
Embodiment 3
The difference from embodiment 1 is that according to parts by weight, every liter of phosphating solution component is as shown in table 1, and use ammonium hydroxide tune
Save pH to 3.5.
Embodiment 4
The difference from example 2 is that according to parts by weight, every liter of phosphating solution component is as shown in table 1.
Embodiment 5
The difference from example 2 is that according to parts by weight, every liter of phosphating solution component is as shown in table 1.
Embodiment 6
The difference from example 2 is that according to parts by weight, every liter of phosphating solution component is as shown in table 1.
Wherein, emulsifier op-10 is replaced with into dodecyl sodium sulfate.
Embodiment 7
The difference from example 2 is that according to parts by weight, every liter of phosphating solution component is as shown in table 1.
Embodiment 8
The difference from example 2 is that according to parts by weight, every liter of phosphating solution component is as shown in table 1.
Wherein, phosphatization auxiliary agent uses tartaric acid.
Comparative example
Comparative example 1
The difference from example 2 is that according to parts by weight, every liter of phosphating solution component is as shown in table 1.
Comparative example 2
The difference from example 2 is that according to parts by weight, every liter of phosphating solution component is as shown in table 1.
Performance detection test
Corrosion resisting property is examined: referring to institute in GB 6807-86 " phosphorization treatment technology condition before iron and steel parts are painted " Appendix D
The drop method of record to sample carry out Kesternich test, test solution formula be 41g/L anhydrous cupric sulfate, 35g/L sodium chloride and
13ml/L hydrochloric acid (0.1N) drips test solution on phosphatization surface, while starting stopwatch at 15-25 DEG C, observation drop from
Its orchid becomes the light yellow or pink time, and time record is as shown in table 2.
Appearance test: referring to the appearance test side in GB 6807-86 " phosphorization treatment technology condition before iron and steel parts are painted "
Method carries out appearance observation to sample, and observed result is as shown in table 2.
Table 1 (phosphating solution formula table)
Table 1- is continuous
Table 2 (detection test table)
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (7)
1. a kind of phosphating process of steel pipe, it is characterised in that: include the following steps,
S1, oil removing, processing of rust removing；
S2, washing；
S3, phosphorating treatment；
S4 is dry；
According to parts by weight, every liter of phosphating solution includes following components:
30-40 parts of phosphoric acid；
20-25 parts of zinc oxide；
0.2-0.3 parts of sodium chlorate；
0.2-0.3 parts of sodium molybdate；
0.2-0.4 parts of m-nitrobenzene sodium sulfonate；
0.5-1.0 parts of phosphatization auxiliary agent；
Ammonium hydroxide adjusts pH to 2.0-3.5.
2. a kind of phosphating process of steel pipe according to claim 1, it is characterised in that: according to parts by weight, every liter of phosphatization
Liquid includes 25-30 parts of zinc dihydrogen phosphate.
3. a kind of phosphating process of steel pipe according to claim 1, it is characterised in that: according to parts by weight, every liter of phosphatization
Liquid includes 0.1-0.3 parts of sodium fluoride.
4. a kind of phosphating process of steel pipe according to claim 1, it is characterised in that: the phosphatization auxiliary agent uses lemon
Acid.
5. a kind of phosphating process of steel pipe according to claim 1, it is characterised in that: according to parts by weight, every liter of phosphatization
Liquid includes 0.1-0.2 parts of 1- spicy thioalcohol.
6. a kind of phosphating process of steel pipe according to claim 5, it is characterised in that: according to parts by weight, every liter of phosphatization
Liquid includes 0.3-0.5 parts of emulsifier op-10.
7. a kind of phosphating process of steel pipe according to claim 1, it is characterised in that: according to parts by weight, every liter of phosphatization
Liquid includes 0.1-0.2 parts of hydroxyl sulfate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910803179.7A CN110359036B (en) | 2019-08-28 | 2019-08-28 | Phosphating process for steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910803179.7A CN110359036B (en) | 2019-08-28 | 2019-08-28 | Phosphating process for steel pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110359036A true CN110359036A (en) | 2019-10-22 |
| CN110359036B CN110359036B (en) | 2021-07-30 |
Family
ID=68225442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910803179.7A Active CN110359036B (en) | 2019-08-28 | 2019-08-28 | Phosphating process for steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110359036B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI716170B (en) * | 2019-10-29 | 2021-01-11 | 亞比斯包材工場股份有限公司 | Method for treating and phosphatizing metal board without acid |
| CN115852354A (en) * | 2022-11-28 | 2023-03-28 | 北京市三强钢筋预应力设备有限公司 | Processing technology of extrusion anchor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988194A (en) * | 2010-11-18 | 2011-03-23 | 平湖市供电局 | Site rust-removing and corrosion-preventing method for steel piece of electric power system |
| CN102703889A (en) * | 2012-05-28 | 2012-10-03 | 武汉永正科技发展有限公司 | Low-temperature single-component zinc series phosphating solution and preparation method thereof |
| CN105543826A (en) * | 2015-12-29 | 2016-05-04 | 钢铁研究总院 | Normal-temperature phosphating solution forming phosphating film highly resistant to corrosion, preparing method and phosphating technology |
| JP2018059204A (en) * | 2016-10-07 | 2018-04-12 | グッドリッチ コーポレイション | Method for arranging corrosion resistance system on substrate, corrosion inhibiting system, and chemical coating solution |
-
2019
- 2019-08-28 CN CN201910803179.7A patent/CN110359036B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988194A (en) * | 2010-11-18 | 2011-03-23 | 平湖市供电局 | Site rust-removing and corrosion-preventing method for steel piece of electric power system |
| CN102703889A (en) * | 2012-05-28 | 2012-10-03 | 武汉永正科技发展有限公司 | Low-temperature single-component zinc series phosphating solution and preparation method thereof |
| CN105543826A (en) * | 2015-12-29 | 2016-05-04 | 钢铁研究总院 | Normal-temperature phosphating solution forming phosphating film highly resistant to corrosion, preparing method and phosphating technology |
| JP2018059204A (en) * | 2016-10-07 | 2018-04-12 | グッドリッチ コーポレイション | Method for arranging corrosion resistance system on substrate, corrosion inhibiting system, and chemical coating solution |
Non-Patent Citations (1)
| Title |
|---|
| 尚书定: "锌系低温低渣磷化工艺", 《表面工程与再制造》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI716170B (en) * | 2019-10-29 | 2021-01-11 | 亞比斯包材工場股份有限公司 | Method for treating and phosphatizing metal board without acid |
| CN115852354A (en) * | 2022-11-28 | 2023-03-28 | 北京市三强钢筋预应力设备有限公司 | Processing technology of extrusion anchor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110359036B (en) | 2021-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4865653A (en) | Zinc phosphate coating process | |
| US4168983A (en) | Phosphate coating composition | |
| CN100595328C (en) | Composition for surface treatment of light metal and its composite material | |
| WO2010050131A1 (en) | Treatment solution for chemical conversion of metal material and method for treatment | |
| JPH05195245A (en) | Phosphate conversion treatment method on metal surface | |
| DE102005023023B4 (en) | Method of preparing metallic workpieces for cold forming, process coated workpieces and their use | |
| CN102719819B (en) | General phosphating agent | |
| CN106148974A (en) | A kind of iron and steel derusting and phosphorating agent | |
| CN103695881B (en) | Room temperature is without slag fast bonderizing liquor and preparation method thereof | |
| US5207840A (en) | Process for preparing zinc phosphate coatings containing manganese and magnesium | |
| CN103668149B (en) | Ordinary-temp fast bonderizing liquor and preparation method thereof | |
| CN110359036A (en) | A kind of phosphating process of steel pipe | |
| CN102102200A (en) | Phosphorization solution for cathode electrophoresis | |
| WO1995007370A1 (en) | Nickel-free phosphatization process | |
| CN108998781A (en) | A kind of car body coating front surface zirconium treatment technique | |
| EP0381190B1 (en) | Phosphate treatment solution for composite structures and method for treatment | |
| CN104451634B (en) | Aluminum and aluminum alloy passivation solution, preparation method and using method thereof | |
| EP0111223B1 (en) | Process for phosphatizing metallic surfaces, and solutions for use therein | |
| EP0675972B1 (en) | Substantially nickel-free phosphate conversion coating composition and process | |
| EP1005578B1 (en) | Phosphating method accelerated by n-oxides | |
| CN103668148B (en) | High anti-corrosion Phosphating Solution of middle temperature zinc cathode and preparation method thereof | |
| EP0889977B1 (en) | Zinc phosphatizing with low quantity of copper and manganese | |
| US3090710A (en) | Method and solution for producing chromate coatings on zinc and zinc alloys | |
| EP1090160B1 (en) | Method for controlling the coating weight for strip-phosphating | |
| DE4330104A1 (en) | Nickel- and copper-free phosphating process |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A phosphating process for steel pipes Effective date of registration: 20220523 Granted publication date: 20210730 Pledgee: China Minsheng Banking Corp Wenzhou branch Pledgor: Zhejiang Fengye Group Co.,Ltd. Registration number: Y2022980006078 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |