CN107345297A - A kind of alkaline cleaning fluid, phosphating solution and metal surface treating method - Google Patents
A kind of alkaline cleaning fluid, phosphating solution and metal surface treating method Download PDFInfo
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- CN107345297A CN107345297A CN201710663027.2A CN201710663027A CN107345297A CN 107345297 A CN107345297 A CN 107345297A CN 201710663027 A CN201710663027 A CN 201710663027A CN 107345297 A CN107345297 A CN 107345297A
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- phosphating solution
- cleaning fluid
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- 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
- C23C22/78—Pretreatment of the material to be coated
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/16—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions using inhibitors
- C23G1/18—Organic inhibitors
-
- 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
- C23C22/44—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 fluorides or complex fluorides
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
Abstract
A kind of alkaline cleaning fluid disclosed by the invention, phosphating solution and metal surface treating method, the steps such as phosphatization are washed twice including oil removing alkali cleaning pickling, used green alkaline cleaning fluid has energy-conserving and environment-protective technique effect, there is good cleaning performance to ferrous metal and non-ferrous metal simultaneously, the phosphating solution of use has film forming quick, film adhesion is strong, corrosion resistance is good, it can be operated by brushing or spraying, it is simple to operate, low cost and other advantages, the phosphating solution of the preparation reduces phosphating solution sediment, ensure the quality of phosphating coat, even film layer is fine and smooth, therefore, the metal surface treating method can be more environmentally-friendly, Treatment of Metal Surface before application is realized more efficiently, there is actively impact to coating process and coating quality.
Description
Technical field
The present invention relates to metal surface treating method before a kind of application, belong to smelting and processing of metals technical field.
Background technology
Coating Pretreatment refers to the preparation carried out before application to coated article surface, is the basis of whole coating process,
It handles quality height and directly affects whole coating quality quality, it is therefore necessary to gives significant concern.Metal works processing and
During storage, especially in machining process, easily by oil pollution, its surface easily produces bur, such as some workpiece
To prevent from getting rusty during storage, it is necessary to smear antirust oil or antirust grease is protected by.The presence of greasy dirt influences coating in gold
Belong to the wetting on matrix and adhesion, it is therefore desirable to which metal material needs to be removed before application is carried out, and carries out suitably
Surface chemistry is changed, there is provided is adapted to the substrate of coating specification, to increase the adhesive force of paint film, is extended the service life of paint film, fill
Protective effect and the decorative effect of coating are waved in distribution.
Treatment of Metal Surface process can include the processes such as alkali cleaning, pickling and phosphorating treatment, it is necessary to use before usual application
Include the reagent treatment such as alkali cleaning cleaning fluid, pickle and phosphating solution.By taking cleaning fluid as an example, with environmental protection requirement standard
Severization, emission control to industrial wastewater is also increasingly stricter, thus the discharge of substantial amounts of sub-standard cleaning agent into
To need the important topic studied.In addition, existing metallic copper material detergent is mostly solvent-borne type, phosphorous aqueous cleaning agent etc., this
A little cleaning agents have the drawback that cleaning performance is not highly desirable, and the top layer of black easily occurs in the metallic element after cleaning, gives
Following process makes troubles, and the especially processing to precision components causes to puzzle；It is stronger to equipment corrosion, increase equipment into
This；Scavenging period is longer, and conventional alkaline cleaner has NaOH, Na2CO3, silicate, phosphate etc., but these alkali lye respectively have
Defect, such as NaOH are epistasis alkali lye, can be reacted with acid dirt, but are only used for ferrous metal, have corrosion to non-ferrous metal
Effect, Na2CO3 belong to moderate strength alkali lye, there is emollescence to hard water, and saponifying ability is weak, and washing property is poor, although silicate
Non-ferrous metal and ferrous metal are widely used, but the H4SiO4 colloids produced are easily deposited on metal surface, influence follow-up phosphatization
Quality, the phosphorus-containing wastewater of phosphate production are difficult to handle, and can cause Water Eutrophication, are also limited by use.It is generally single
Anion surfactant it is more, its CMC concentration is high, and dirt-removing power is strong, but stability by solution medium and water quality impact compared with
Greatly, such as in acid medium, anion translates into neutral molecule, and dissolubility reduces in water；When the hardness of water is higher,
Easily generation slightly solubility material, make the reduction of its surface-active.
And for parkerizing process, with the progress of phosphorization technology, both at home and abroad just in active development quick phosphorization process,
Its phosphatization temperature is low, less energy consumption, sediment is few, crystal grain is thin, film is thin, the adhesive force of film and corrosion resistance improve a lot.State at present
Interior phosphorization technology common problem is：Phosphatization temperature is high, phosphating solution service life is short, washing difficulty is big and causes water body
The problems such as pollution, not only bring burden to environmental improvement but also consume the resources such as substantial amounts of water, phosphate.
Therefore, it is necessary to Treatment of Metal Surface flow before application is improved, it is desirable to obtain more environmentally-friendly, more efficient
Metal surface treating method.
The content of the invention
It is an object of the invention to provide metal surface treating method before a kind of application, it not only optimizes handling process,
And significantly more efficient cleaning fluid and phosphating solution are used, dual improved effect is played, to meeting paint coating requirement, increase paint
The adhesive force of film, extend the service life of paint film, the protective effect and decorative effect for giving full play to coating play an important role.
A kind of metal surface treating method, mainly including following steps：
Step 1) oil removing：Pending metal works are immersed in acetone soln, 10-15min is cleaned using ultrasonic cleaner,
Greasy dirt is fully cleaned；
Step 2) alkali cleaning：Pending workpiece is immersed in alkaline cleaning fluid or carries out spray process using alkaline cleaning fluid；
Step 3) pickling：Above-mentioned metal works after alkali cleaning are subjected to pickling, H2SO4 that pickle used is 150mL/L,
The mixed solution of 50mL/L HF and 30mL/L triethanolamine, for control temperature at 25 DEG C or so, pickling time is about 2 min；
Step 4) is once washed：Using equipment deionized water rinsing surface of workpiece is sprayed, water temperature is maintained at 50 DEG C or so,
Rinse 2-3min or so；
Step 5）Secondary washing：1-2min is handled using 20-40g/L sodium carbonate liquor, then carries out secondary deionized water punching
Wash, water temperature is maintained at 20 DEG C or so, and cold wind is stand-by after drying up；
Step 6) phosphorating treatment：Phosphating solution is uniformly directly brushed into one layer of phosphatization liquid film on workpiece using acidproof brush, or made
One layer of phosphatization liquid film is sprayed with spray gun, or carries out immersion treatment, is then dried, the phosphatization membrane crystallization that workpiece surface is formed
It is fine and close.
The raw material of the alkaline cleaning fluid forms and each group sendout is：Sodium hydroxide 5-15g/L, potassium hydroxide 5-
10g/L, sodium metasilicate 2.5-5g/L, sodium gluconate 2-5g/L, phosphate amine salt 1-4g/L, triethanolamine 4-8g/L, polyoxy second
Alkene oleate 4-10g/L, dodecyl Hydroxypropyl phosphate ester glycine betaine 2-4g/L, sodium lauroyl sarcosine 5-12g/L, coconut acyl
Diethanol amine 2-5g/L, poly-epoxy succinic acid 1-1.5g/L, BTA 1.5-3g/L, remaining is deionized water；
The raw material of above-mentioned phosphating solution forms：Zinc dihydrogen phosphate 80-150 parts, zinc oxide 10-30 parts, phosphoric acid 30-50
Part, manganese carbonate 2-5 parts, prodan 2-4 parts, HAS 1-5 parts, triazole compounds 4-8 parts, sodium citrate 2-3 parts, poly
Phosphate 10-15 parts, sodium fluoride 1-3 parts, ammonium peroxydisulfate 1-2 parts, sodium molybdate 3-8 parts, potassium chlorate 1-2 parts, hexa-methylene four
Amine 1-3 parts, ring sodium trimetaphosphate 3-5 parts.
Compared with prior art, advantage of the invention is that the alkaline cleaning fluid that the present invention uses is free of phosphoric acid salt, no
The problems such as water pollution eutrophy can be caused, there is environment protecting, while have to ferrous metal and non-ferrous metal good clear
Effect is washed, compared with prior art, alkaline cleaner of the invention can not only wash the impurity such as some metal oxides, and
Surface of workpiece greasy deposits can be washed by the synergy of various ingredients, effect is preferable, effectively increases skin covering of the surface
Permeability, contribute to following process program, the phosphating solution that the present invention uses has that film forming is quick, film adhesion is strong, anti-corrosion
Property is good, can by brush or spray operated, simple to operate, low cost and other advantages, the phosphating solution of the preparation not only reduces
Phosphating solution sediment, ensure the quality of phosphating coat, even film layer exquisiteness.
Brief description of the drawings
Fig. 1 is metal surface treating method flow chart before application of the invention.
Embodiment
Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
As shown in figure 1, a kind of metal surface treating method of the present invention, mainly including following steps：
Step 1) oil removing：Pending metal works are immersed in acetone soln, 10-15min is cleaned using ultrasonic cleaner,
Greasy dirt is fully cleaned；
Step 2) alkali cleaning：Pending workpiece is immersed in alkaline cleaning fluid or carries out spray process using alkaline cleaning fluid；
Step 3) pickling：Above-mentioned metal works after alkali cleaning are subjected to pickling, H2SO4 that pickle used is 150mL/L,
The mixed solution of 50mL/L HF and 30mL/L triethanolamine, for control temperature at 25 DEG C or so, pickling time is about 2 min；
Pickle used is the mixed solution of 150mL/L H2SO4,50mL/L HF and 30mL/L triethanolamine, and control temperature exists
25 DEG C or so, pickling time is about 2 min.The pickle is sour based on sulfuric acid, coordinates molten with hydrofluoric acid and triethanolamine addition
Close, be mainly used in the processing of high-alloy steel and stainless steel using the acid solution of the formulation components, it can fast and effeciently go
Except the oxide of workpiece surface；
Step 4) is once washed：Using equipment deionized water rinsing surface of workpiece is sprayed, water temperature is maintained at 50 DEG C or so,
Rinse 2-3min or so；
Step 5）Secondary washing：In previous water-washing process, still remained at surface of workpiece especially surface concave, aperture position
Acid solution, easily get rusty again, it is necessary to carry out neutralisation treatment after water washing, it is main molten using 20-40g/L sodium carbonate
Liquid, 1-2min is handled, then carry out secondary deionized water flushing, water temperature is maintained at 20 DEG C or so, and cold wind is stand-by after drying up；
Step 6) phosphorating treatment：Phosphating solution is uniformly directly brushed into one layer of phosphatization liquid film on workpiece using acidproof brush, or made
One layer of phosphatization liquid film is sprayed with spray gun, or carries out immersion treatment, is then dried, the phosphatization membrane crystallization that workpiece surface is formed
It is fine and close；
The raw material of the alkaline cleaning fluid forms and each group sendout is：Sodium hydroxide 5-15g/L, potassium hydroxide 5-10g/L,
Sodium metasilicate 2.5-5g/L, sodium gluconate 2-5g/L, phosphate amine salt 1-4g/L, triethanolamine 4-8g/L, polyoxyethylene oleic acid
Ester 4-10g/L, dodecyl Hydroxypropyl phosphate ester glycine betaine 2-4g/L, sodium lauroyl sarcosine 5-12g/L, coconut acyl diethanol
Amine 2-5g/L, poly-epoxy succinic acid 1-1.5g/L, BTA 1.5-3g/L, remaining is deionized water.
Composite reactive agent prescription is used in above-mentioned cleaning fluid, mainly including nonionic surfactant：Polyoxyethylene oleic acid
Ester 4-10g/L and coconut diethanolamide 2-5g/L, amphoteric surfactant：Dodecyl Hydroxypropyl phosphate ester glycine betaine 2-
4g/L, anion surfactant：Sodium lauroyl sarcosine 5-12g/L.
The mechanism of action of above-mentioned alkaline cleaning fluid is：
Sodium gluconate is corrosion inhibiting and descaling agent, has two kinds of performances of inhibition and scale inhibition, has good cooperative effect, with sodium metasilicate
Compounding use, there is the ability of stronger resistance chlorion, there is good chelating ability to iron ion, can be with the iron ion shape in solution
Play a part of strengthening corrosion mitigating effect into diaphragm, prevent fouling；The activity of Hamposyl L salt is with lipophilic group alkyl groups
Increase and increase, be typically chosen C12-C14, when alkyl carbon chain lengths are long, water solubility is poor, shows activity during less than C12
Declining substantially, dirt-removing power is low, applicants have found that, the hydrophilic group of sodium lauroyl sarcosine is identical with lipophilic group species, its
Molecular weight is small, has higher permeability, has stronger decontamination compared to the neopelex of conventional single use
Effect；Dodecyl Hydroxypropyl phosphate ester glycine betaine belongs to amphoteric phosphate surfactant molecule, better than general anion table
Alkali resistance, electrolyte-resistant and the antistatic behaviour advantage of face activating agent, and with stronger calcium soap dispersiveness, with surface
Power is low, frothing capacity good characteristics；Coconut diethanolamide is water-soluble, has a stronger foaming power, power of impregnation, detergency,
Antirust power and preferable dispersiveness etc., there are better effects for metal cleaner；Poly-epoxy succinic acid belongs to nitrogen-free, non-phosphorus had
Machine compound, have scale inhibitor double effects concurrently, biodegradability is got well and is applied to high-alkali, high metal content water system, and it adds
Part scaling cations can be blocked after entering, suppress its reaction with anion, so as to prevent fouling, while are had very with BTA
Good synergy, the corrosion mitigating effect after proportionally compounding are remarkably reinforced.
The preparation method of the alkaline cleaning fluid of the present invention is simultaneously：
Step 1：Complexed surfactant solution is prepared, by polyoxyethylene oleate 4-10g/L and coconut diethanolamide 2-5g/
L, dodecyl Hydroxypropyl phosphate ester glycine betaine 2-4g/L, sodium lauroyl sarcosine 5-12g/L is put in acid and alkali-resistance reactor, slow
It is slow to add phosphate amine salt 1-4g/L and deionized water, it is heated to 50 DEG C or so and more than 10h is stirred with 80rpm,
Step 2：Prepare alkalescence cleaning base fluid：Add sodium hydroxide 5-15g/L, potassium hydroxide 5-10g/L, sodium metasilicate 2.5-5g/
L, sodium gluconate 2-5g/L, in the complexed surfactant solution obtained to step 1, appropriate amount of deionized water is added again, in
More than 16h is stirred with 40rpm in 40 DEG C of environment,
Step 3：The reagents such as dispersant are added, then add triethanolamine 4-8g/L, poly-epoxy succinic acid 1-1.5g/L, benzo three
Azoles 1.5-3g/L, continue to stir more than 10h；
Step 4：Selectively, appropriate PH conditioning agents are added the pH value of alkaline cleaning fluid is adjusted to more than 8.5, be preferably adjusted to 9.5-
Between 10；The alkaline cleaning fluid that preparation is drawn is cleaned to workpiece, cleaning temperature is 60-75 DEG C, scavenging period 5min.
The present invention alkaline cleaning fluid, there is advantages below, its use tween, nonionic surfactant and
The Recompounded multielement system of amphoteric surfactant, comparing the single-activity agent that tradition uses has obvious advantage, for example is used alone
During anion surfactant sodium lauroyl sarcosine, its critical micelle concentration is 11mmol/L, and when it and amphoteric surface are lived
Property agent dodecyl Hydroxypropyl phosphate ester glycine betaine is according to 2:1-3:During 1 mass ratio compounding, critical micelle concentration is reduced to
3mmol/L, the surface tension of compound system are down to 40-45mN/m（Surface tension of the pure water at 25 DEG C is 72mN/m), meet
The surface tension requirements scope 30-55 mN/m of usual alkaline cleaner；When adding nonionic surfactant, and its matter again
Amount than in accordance with（Such as polyoxyethylene oleate 4-10g/L and coconut diethanolamide 2-5g/L）During ratio as described above, compounding
The surface tension of system is reduced to 30-35 mN/m, and this illustrates that the compounding of two or more classes of surfactant generates obvious association
Same-action, contribute in degreasing metal cleaning process rapidly and efficiently.
The raw material of above-mentioned phosphating solution forms：Zinc dihydrogen phosphate 80-150 parts, zinc oxide 10-30 parts, phosphoric acid
30-50 parts, manganese carbonate 2-5 parts, prodan 2-4 parts, HAS 1-5 parts, triazole compounds 4-8 parts, sodium citrate 2-3
Part, polyphosphate 10-15 parts, sodium fluoride 1-3 parts, ammonium peroxydisulfate 1-2 parts, sodium molybdate 3-8 parts, potassium chlorate 1-2 parts, six is sub-
Tetramine 1-3 parts, ring sodium trimetaphosphate 3-5 parts；
The phosphatization liquid and preparation method thereof is：First zinc oxide 10-30 parts are completely dissolved with suitable quantity of water in acid-resistant container or Phosphating Slot,
Phosphoric acid 30-50 parts are added after being sufficiently stirred to continue to stir, and are heated to 100-120 DEG C of insulation and are fully reacted for 2 hours, wait to fill
Zinc dihydrogen phosphate 80-150 parts, manganese carbonate 2-5 parts, prodan 2-4 parts, HAS 1-5 parts, triazole are added after dividing reaction
Compound 4-8 parts, sodium fluoride 1-3 parts, ammonium peroxydisulfate 1-2 parts, sodium molybdate 3-8 parts, potassium chlorate 1-2 parts, hexa 1-3
Part, ring sodium trimetaphosphate 3-5 parts stir, and are eventually adding polyphosphate 10-15 parts, sodium citrate 2-3 parts, then add again
Enter suitable quantity of water carry out pH value adjustment stir after.
Had the advantage that compared to existing phosphating solution composition and preparation method, above-mentioned phosphating solution,
1）The oxidant of use, accelerator include manganese carbonate, prodan, HAS, triazole compounds, and sodium citrate is more
Quadrafos, sodium fluoride, ammonium peroxydisulfate, sodium molybdate, potassium chlorate, hexa, ring sodium trimetaphosphate, through testing
Card, component configuration have special role, can make it that the phosphating solution film forming that preparation is drawn is quick, film adhesion is strong, anti-corrosion
The features such as property is good；
2）For example, the usage amount of phosphoric acid can be reduced to the full extent using a small amount of appropriate amount of components of HAS, so as to reduce
Cost reduce pollution, what is more important its can accelerate substrate corrosion reaction speed so that Fe be oxidized to Fe2+ ferrous irons from
Son, so as to quickly consume a large amount of hydrogen ions, promote to dissociate a large amount of PO43- in phosphating solution, and Zn2+, Fe2+ reactions and in workpiece
Phosphating coat nucleus and fast-growth at the fast deposition of surface；
3）The configuration of activation accelerator using sodium fluoride 1-3 parts, prodan 2-4 parts, HAS 1-5 parts can not only add
Fast phosphatization nucleus is formed so that nucleus densification corrosion resistance strengthens, and may also speed up the overall phosphatization speed of phosphating solution, promotes phosphorus
It is careful to change layer；
4）The oxidant of use is formed by components such as ammonium peroxydisulfate 1-2 parts, sodium molybdate 3-8 parts, potassium chlorate 1-2 parts, is risen in acid
Having in property solution between very strong oxidisability, especially sodium molybdate and phosphating solution main component has good coordinating effect,
Treatment temperature can be effectively reduced, improves film forming speed, corrosion inhibiter can also be played a part of and reduce phosphatization film thickness；
5）Appropriate hexa is added, mainly uses, may also function as pair as the agent of buffer metal material corrosion
The effect of phosphating solution pH value regulation；Appropriate ring sodium trimetaphosphate is added, its role is to generate complex chemical compound decompose can
Heavy metal existing for energy, is used as dispersant and stabilizer；
6）Appropriate triazole compounds are added, mainly absorption can occur in metal surface or form complex for it, in sodium molybdate
The new adsorption layer of heterocyclic compound is formed on the passivating film formed with metal again, constitutes the compound of one layer of three-dimensional net structure
Film, absorption of the heterocyclic compound at micropore effectively plugs the diffusion admittance of metal ion, while also prevents CI- to gold
Permeated in category, so as to significantly reduce the corrosion rate to metal works in the case of with sodium molybdate component；
7）And it can be given full play in final stage addition polyphosphate 10-15 parts, the sodium citrate 2-3 part for preparing phosphating solution
Its effect as nucleus regulator and slag reduction agent, experiment proves that, compared to conventional art, this method can reduce phosphatization slag
Form more than 5-10%.
It should be noted that oxidant, accelerator are to realize low temperature phosphor conditio sune qua non, its solution acidity, oxygen
Agent, catalyst are that an important factor for influenceing phosphatization speed, conclusive effect, oxidant, accelerator are played to phosphatization quality
The low then phosphatization speed of concentration it is slow, too low then film forming, otherwise excessive concentration, phosphatization speed is not fast, it may appear that course of reaction is too fast,
Situations such as being not easy to form suitable thickness, therefore the formation of said components allocation ratio determines to need by creative consideration and examination
Checking could be determined finally.
Although giving detailed description and explanation to the embodiment of the present invention above, it should be noted that
We can carry out various equivalent changes and modification to above-mentioned embodiment according to the conception of the present invention, and its caused function is made
, all should be within protection scope of the present invention during with the spirit still covered without departing from specification and accompanying drawing.It is described above, be only
Presently preferred embodiments of the present invention, it is not intended to limit the invention, every technical spirit according to the present invention is to above example institute
Any trickle amendment, equivalent substitution and the improvement made, should be included within the protection domain of technical solution of the present invention.
Claims (3)
1. a kind of alkaline cleaning fluid, its raw material composition and each group sendout are：Sodium hydroxide 5-15g/L, potassium hydroxide 5-
10g/L, sodium metasilicate 2.5-5g/L, sodium gluconate 2-5g/L, phosphate amine salt 1-4g/L, triethanolamine 4-8g/L, polyoxy second
Alkene oleate 4-10g/L, dodecyl Hydroxypropyl phosphate ester glycine betaine 2-4g/L, sodium lauroyl sarcosine 5-12g/L, coconut acyl
Diethanol amine 2-5g/L, poly-epoxy succinic acid 1-1.5g/L, BTA 1.5-3g/L, remaining is deionized water.
2. a kind of phosphating solution, its raw material composition are by weight：Zinc dihydrogen phosphate 80-150 parts, zinc oxide 10-30 parts, phosphoric acid
30-50 parts, manganese carbonate 2-5 parts, prodan 2-4 parts, HAS 1-5 parts, triazole compounds 4-8 parts, sodium citrate 2-3
Part, polyphosphate 10-15 parts, sodium fluoride 1-3 parts, ammonium peroxydisulfate 1-2 parts, sodium molybdate 3-8 parts, potassium chlorate 1-2 parts, six is sub-
Tetramine 1-3 parts, ring sodium trimetaphosphate 3-5 parts.
3. a kind of metal surface treating method of the phosphating solution of alkaline cleaning fluid and claim 2 using the claims 1,
Mainly include the following steps that：
Step 1) oil removing；Step 2) alkali cleaning：Pending workpiece is immersed in alkaline cleaning fluid or sprayed using alkaline cleaning fluid
Leaching is handled；Step 3) pickling；Step 4) is once washed；Step 5）Secondary washing；Step 6) phosphorating treatment：It is direct using acidproof brush
Phosphating solution is uniformly brushed into one layer of phosphatization liquid film on workpiece, then dried, the phosphatization membrane crystallization that workpiece surface is formed causes
It is close.
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| CN110923718A (en) * | 2019-12-12 | 2020-03-27 | 广东红日星实业有限公司 | Water-soluble fine polishing solution and preparation method thereof |
Also Published As
| Publication number | Publication date |
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| CN105369271B (en) | 2017-11-17 |
| CN105369271A (en) | 2016-03-02 |
| CN107345297B (en) | 2020-07-14 |
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