CN103433190A - Energy-saving and environment-friendly corrosion-preventing method of metal workpieces - Google Patents
Energy-saving and environment-friendly corrosion-preventing method of metal workpieces Download PDFInfo
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Abstract
The invention relates to an energy-saving and environment-friendly corrosion-preventing method of metal workpieces. The energy-saving and environment-friendly corrosion-preventing method comprises the steps that (1) oil removal and rust removal are conducted on the surfaces of the metal workpieces through an oil removal and rust removal agent; (2) the metal workpieces are cleaned; (3) the metal workpieces are rinsed; (4) according to corrosion-preventing treatment of the metal workpieces, the metal workpieces are soaked in a corrosion-preventing trough containing corrosion-preventing liquid, the corrosion-preventing liquid needs to reach a set liquid level in the corrosion-preventing trough, the height of the position of the set liquid level is three fourths that of the inner cavity of the corrosion-preventing trough, corrosion-preventing treatment of the metal workpieces is completed at the temperature in the range from 20 DEG C to 25 DEG C, treatment time ranges from 30 seconds to 60 seconds, a downdraft type circulating filtration pump is adopted in a treatment process so that the corrosion-preventing liquid can be stirred and filtered in a circulating mode, and the flow of the circulating filtration pump is 0.1-0.2m<3>/minute as for each cubic meter of the volume of the corrosion-preventing trough. The energy-saving and environment-friendly corrosion-preventing method has the advantages of saving energy and protecting the environment.
Description
Technical field
The present invention relates to the surface of workpiece anti-corrosion method, especially relate to a kind of pre-anticorrosion method of energy saving and environment friendly metal works.
Background technology
At present, the anti-corrosion method of metal (metal especially used in auto industry) generally has following three kinds:
1. zinc-plated or lead plating method;
2. the methods such as pickling, phosphatization, passivation, Da Keluo;
3. pickling, phosphatization, passivation, electrophoresis or spraying powder method.
Wherein, phosphatization is processed and is widely used, but there is following defect in it:
(1) harm of phosphorus.
The content of inorganic phosphorus of phosphorous phosphorized waste water is high, COD and biochemical oxygen demand (BOD) relatively low (Phos comprises nitrite, phosphate etc.), with biochemical process, processes, and is difficult to reach the discharge standard of waste water.Like this, phosphorized waste water enters in rivers and lakes, has increased the loads of nutrition of water body, causes the eutrophication of water body (particularly sealing water body), destroys the self-cleaning of water body and circulation.Governing factor in most eutrophication waters is phosphorus, and this problem of eutrophication pollution oneself become the great environmental problem that current China faces.
(2) phosphatization is processed steps such as needing neutralization, table tune, and the time of processing is long, cost is high, workload is large.
The acidic and alkaline waste water that general phosphating line is discharged, as discharge after being pooled to same wastewater disposal basin, may make the pH of waste water close to neutrality because of neutralization.But some phosphating lines only have degreasing process, without the pickling operation, like this, the pH of the waste water of discharging from this line is alkalescence (reason is that the degreaser temperature is high, and the alkaline matter of taking out of is more) more.When changing degreaser and surface adjustment liquid, the alkaline waste water of discharge is more.If above-mentioned waste water is not processed and is directly entered pond, farmland, meeting spoiled soil structure, murder by poisoning fish and livestock etc.In addition, the main component of phosphatization waste residue is ferric phosphate and trbasic zinc phosphate.Along with the strict implement of China's pollutant emission rules, parkerized environmental issue is more aobvious outstanding.
In sum, the processing step of above-mentioned anti-corrosion method is complicated, cost is high.In the anticorrosion process of metal, discharge a large amount of poisonous and harmful chemical pollutants.In addition, degreasing and phosphatization are carried out after usually all needing treatment fluid is heated to uniform temperature, and this has strengthened the energy consumption of production line.With 40-45 ℃ of calculating of phosphatization temperature, the thermal energy consumption cost that the most cheap at present domestic spray phosphating line is processed sheet member is 0.4 yuan/square metre of RMB.Therefore, the energy-conserving and environment-protective policy that environment is polluted, improves in the minimizing that above-mentioned anti-corrosion method and current country vigorously advocate is far from suitable.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of pre-anticorrosion method of energy saving and environment friendly metal works, and this method has advantages of energy-saving and environmental protection.
For solving the problems of the technologies described above, the invention provides a kind of pre-anticorrosion method of energy saving and environment friendly metal works, comprise the following steps: (1) carries out the degreasing and rust removal processing by oil-removing rust-removing agent to surface of workpiece; (2) clean metal workpiece; (3) rinsing metal works; (4) the pre-anticorrosion processing of metal works: metal works is immersed in the pre-anticorrosion groove that pre-impregnating fluid is housed, the liquid level of pre-impregnating fluid must reach the setting liquid level place in pre-anticorrosion groove, the position of described setting liquid level is at 3/4 place of pre-anticorrosion groove inner chamber height, complete the pre-anticorrosion processing of metal works in the time of 20-25 ℃, processing time is 30-60 second, in processing procedure, adopt the filter pump that is circulated throughout of downdraft, make pre-impregnating fluid obtain circulation stirring and filtration, for the groove volume of every cubic metre of pre-anticorrosion groove, the flow that is circulated throughout filter pump is 0.1-0.2m
3/ minute.
For can concise description for the purpose of problem, below to the pre-anticorrosion method of energy saving and environment friendly metal works of the present invention all referred to as this method.
After by oil-removing rust-removing agent, surface of workpiece being carried out to the degreasing and rust removal processing in step (1), make first the grease of surface of workpiece and metal works be separated, the grease of disengaging swims on liquid level, second makes iron rust be converted into Fe soluble in water
3+or Fe
2+thereby, reach the purpose of degreasing and rust removal.The degreasing and rust removal Disposal quality of metal works, directly affect the pre-anticorrosion Disposal quality of metal works.
Step (2) clean metal workpiece and step (3) rinsing metal works, can finally make the surface of workpiece clean enough.
The pre-anticorrosion processing of the metal works of step (4), be attached to surface of workpiece by pre-impregnating fluid, makes surface of workpiece form fine and close diaphragm, thereby extend the anticorrosion time, reaches anticorrosion purpose preferably.
This method has following advantage:
(1) step of this method (1) is all carried out to step (4) under 20-25 ℃, and oil-removing rust-removing agent, rinse water, washings, pre-impregnating fluid, without heating, effectively reduce the energy resource consumption of each step, like this, greatly reduce energy cost, comparatively energy-conservation;
(2) four of this method steps, without waste residue, waste liquid, pollutant emission, processing mode for closed loop, significantly reduce discharge costs, realize environmentally friendly processing, comparatively environmental protection, and the integrated treatment performance is better than existing phosphatization and processes, be connected compact between various processes, improved preservative treatment efficiency and the antiseptic effect of metal works, and then can improve the later stage coating quality of metal works;
(3) processing cost of this method, be only the 17-30% of phosphatization processing cost, other traditional anti-corrosion method processing cost, has obvious Social benefit and economic benefit, realizes green the processing and sustainable development.
In the method:
Described step (3) is first dried metal works afterwards for the first time, again metal works is carried out to pre-anticorrosion processing, the condition of drying for the first time is: lifting is passed through the metal works of rinsing and is located at the top of potcher, utilize hot blast to be dried described metal works, drying time is 2-3 minute, and bake out temperature is 50-60 ℃;
Step (4) is carried out the nature airing or dries for the second time metal works afterwards, the condition of drying for the second time is: lifting is passed through pre-antiseptic metal works and is located at the top of pre-anticorrosion groove, utilize hot blast to be dried described metal works, drying time is 2-3 minutes, and bake out temperature is 60-70 ℃.
Dry for the first time metal works, can remove fast the moisture through the surface of workpiece of rinsing.Dry for the second time metal works, can remove fast the moisture through pre-antiseptic surface of workpiece.
The condition that in described step (1), the surface of workpiece degreasing and rust removal is processed is: metal works is immersed in the degreasing and rust removal groove that oil-removing rust-removing agent is housed, utilize oil-removing rust-removing agent through chemical reaction, the degreasing and rust removal that completes metal works in the time of 20-25 ℃ is processed, processing time is 3-10 minute, in processing procedure, first, adopt the filter pump that is circulated throughout of downdraft, make oil-removing rust-removing agent obtain circulation stirring and filtration, for the groove volume of every cubic metre of degreasing and rust removal groove, the flow that is circulated throughout filter pump is 0.1-0.2m
3/ minute, second, greasy dirt flows into long-pending oil groove by the overflow mode, then realizes the real-time continuous separation of profit by oil water separator;
The preparation method of above-mentioned oil-removing rust-removing agent is: add successively 150-200 gram hydrochloric acid, 2-4 gram tartaric acid in the water of 0.8 liter, 30-40 ℃, stir, as stand-by liquid; Add successively 1-5 gram hexamethylenetetramine, 2-4 gram dodecyl sodium sulfate, 2-3 gram APES in the water of 0.2 liter, 30-40 ℃, obtain solution after stirring, this solution is slowly added in stand-by liquid, stir 5-15 minute, can make oil-removing rust-removing agent.
Be circulated throughout acting as of filter pump: force oil-removing rust-removing agent to circulate, the one, allow oil-removing rust-removing agent obtain circulation stirring, the composition of oil-removing rust-removing agent is kept evenly; The 2nd, allow oil-removing rust-removing agent be filtered, the free particles in it is separated.
In described step (2), the condition of clean metal workpiece is: will be immersed in the rinse bath that running water is housed and be cleaned through the metal works of degreasing and rust removal, the temperature of running water is 20-25 ℃, in cleaning process, by the rinse water in circulating pump continuous sucking rinse bath, and employing particulate filter, anion exchange resin, cationic ion-exchange resin is processed continuously to rinse water, rinse water after being purified also will pump it in potcher, separately, described metal works is entering, while leaving rinse bath, all obtaining spray processes, the angle of shower water and horizontal plane is 120 degree, its temperature is 20-25 ℃, flow is 10-30 liter/min, pressure is 30000Pa, spray time is 3 minutes, the pH of the rinse water in rinse bath is controlled at 6.5-7.0.
Step (2) clean metal workpiece, the oil-removing rust-removing agent that surface of workpiece capable of washing is residual, make surface of workpiece comparatively clean.Adopt particulate filter, can carry out filtration treatment to granule foreign contained in the rinse water in rinse bath; Adopt anion exchange resin, cationic ion-exchange resin, can carry out adsorption treatment to heavy metal ion contained in the rinse water in rinse bath, chlorion plasma, like this, rinse water in rinse bath can be purified and be pumped in potcher, rinse water in rinse bath has obtained recycling fully, improved its comprehensive utilization ratio, guaranteed that step (2), without waste residue, waste liquid discharge, is the processing mode of closed loop.
In described step (3), the condition of rinsing metal works is: will be immersed in the potcher that running water is housed and carry out rinsing through the metal works cleaned, the temperature of running water is 20-25 ℃, in rinse cycle, by the overflow mode, rinse water in potcher is overflowed in rinse bath, separately, described metal works is entering, while leaving potcher, all obtaining spray processes, the angle of shower water and horizontal plane is 120 degree, its temperature is 20-25 ℃, flow is 10-30 liter/min, pressure is 30000Pa, spray time is 3 minutes, the pH of the rinse water in potcher is controlled at 6.5-7.0.
Step (3) rinsing metal works, further the residual a small amount of oil-removing rust-removing agent of rinsing surface of workpiece, make the surface of workpiece clean enough.By the overflow mode, rinse water comparatively clean in potcher is overflowed in rinse bath, like this, the rinse water in potcher has also obtained recycling fully, has improved its comprehensive utilization ratio, has guaranteed that step (3) is without waste residue, waste liquid discharge.
The preparation method of pre-impregnating fluid in described step (4), comprise the following steps: at 60～70 weight portions, add successively 50～55 weight portions in the perfluoroalkyl acrylate of solid content >=90%, the water-base fluorocarbon emulsion of solid content 48% and 8～10 weight portions, the water of the Epocryl of solid content >=90% and 10～15 weight portions, and after abundant stirring and dissolving, add again suspension, and stir, can make described pre-impregnating fluid, the preparation method of the suspension added is: the polyvinylpyrrolidone of 1～1.5 weight portion is joined in the absolute ethyl alcohol of 25～30 weight portions and fully stir, then the micron order or the nanoscale zinc powder that add respectively 8～10 weight portions, the micron order of 5～8 weight portions or nanometer glass scale, fully stir, ultrasonic dispersion is 40 minutes again, to form suspension.
The perfluoroalkyl acrylate of solid content >=90% is the film forming matter of pre-impregnating fluid.The perfluoroalkyl acrylate of solid content>=90% by perfluoroalkyl ethanol and excessive (methyl) acrylic acid in solvent and catalyst Z rOCl arranged
28H
2carry out esterification under the condition that O and hydroquinone of polymerization retarder exist, then remove complete (methyl) acrylic acid of solvent and unreacted under reduced pressure, then add lye pH adjustment to alkalescent, obtain after filtration.It has excellent low-surface-energy characteristic, weatherability and environment friendly, in fields such as building coating, textile industries, is widely used.The above-mentioned characteristic of this film forming matter has guaranteed the antiseptic property that it is excellent.
The water-base fluorocarbon emulsion of solid content 48% is PVF and hydroxyl vinyl ether co-polymer, and the weight percent concentration of fluorine is 8～11.5%, and the main chain contain fluorine atoms.Weatherability, alkali resistance, acid rain resistant that the water-base fluorocarbon emulsion of solid content 48% has splendid mechanical stability, overlength, can bear larger shearing force, and be normal temperature cure, the corrosion resistance of the film-forming temperature of the pre-impregnating fluid of capable of regulating, film forming and raising rete.
The film forming accelerating that the Epocryl of solid content >=90% is pre-impregnating fluid, strengthen the filming performance of pre-impregnating fluid.
One of micron order or nanoscale zinc powder are functional additive, and its electrode potential is lower than the electrode potential of metal works, and while processing metal works, the liquid phase part of pre-impregnating fluid of take is carrier, is distributed on surface of workpiece.When the rete of pre-impregnating fluid breaks, corrosive medium (normally electrolyte solution) is while invading; to make zinc powder and metal works in electric conducting state; zinc powder can form a microcell electrochemical protection at surface of workpiece; set up the system of microcell cathodic protection; play the effect of cathodic protection, thereby improve the antiseptic property of pre-impregnating fluid.
Micron order or nanometer glass scale are another functional additive, when glass flake is dispersed in surface of workpiece, can play the mechanical isolation effect to corrosive medium, extend the path of corrosive medium arrival surface of workpiece on microcosmic, effectively improved the antiseptic power of pre-impregnating fluid.
The dispersant that polyvinylpyrrolidone (being called for short PVP) and absolute ethyl alcohol are described zinc powder and glass flake.Both is water-soluble, better dispersed, and therefore described zinc powder and glass flake can successfully enter in pre-impregnating fluid.
After using pre-impregnating fluid to adopt this method of dipping to carry out preservative treatment to metal works, can form a layered low-surface energy diaphragm at surface of workpiece, make metal works there is good corrosion resistance.Therefore, pre-impregnating fluid economic formula, favorable anti-corrosion effect.
After testing, pre-impregnating fluid gets final product film forming at 60-70 ℃; Under normal storage environment, the anticorrosion phase of metal works can reach more than 36 months.
Pre-impregnating fluid is easy to storage, only need be kept at more than 5 ℃, avoid daylight shady and cool dry the locating of directly shining, ventilates to get final product.The part physicochemical properties of pre-impregnating fluid are:
Solid content in pre-impregnating fluid >=perfluoroalkyl acrylate of 90%, the water-base fluorocarbon emulsion of solid content 48%, Epocryl, micron order or nanoscale zinc powder, micron order or the nanometer glass scale of solid content >=90%, polyvinylpyrrolidone, absolute ethyl alcohol are commercially available product, and specifying information is as follows:
In described step (1) also the synchronous supersonic generator that adopts metal works is carried out to the ultrasonic wave processing, the power of supersonic generator is that 0-3000 watts, frequency are 20-40KHz;
In described step (1), metal works is after degreasing and rust removal is processed, lift by crane described metal works and be located at the top of degreasing and rust removal groove, more described metal works is shaken up and down, jitter amplitude is 1-3 centimetres, chattering frequency is 3-6 times/minutes, and the shake time is 0.5-1 minute.
The audio electrical signal that supersonic generator produces, by the piezoelectric inverse effect of transducer, convert the mechanical oscillation of same frequency to, and with form radiation in oil-removing rust-removing agent of superaudio compressional wave.Malleation and negative pressure alternating action due to the superaudio longitudinal wave propagation, produce countless surpass 1000 atmospheric micro-bubbles explosions at any time, form thin microlocal high pressure bombardment at pending surface of workpiece, greasy dirt, the rust staining of pending surface of workpiece are peeled off rapidly, and Here it is, and ultrasonic wave is processed peculiar " cavitation effect "; Separately, oil-removing rust-removing agent forms the tiny backflow of multiply under the effect of frequency sweep, ultrasonic wave is processed to the greasy dirt, the rust staining that strip down and take away in time surface of workpiece, makes the degreasing and rust removal of surface of workpiece process more quick, thorough.
After described metal works is shaken up and down, can reduce the amount that metal works is taken oil-removing rust-removing agent out of when entering step (2).
Anion exchange resin in described step (2) is for having the anion exchange resin of selecting exchangeability to chlorion, tartrate anion ion, the cationic ion-exchange resin in described step (2) is for having the cationic ion-exchange resin of selecting exchangeability to iron ion.Specifying information is as follows:
Described anion exchange resin is following resin:
Name of product manufacturer
201 * semi-finals basicity styrene series anion exchange resin Shanghai Jin Yang resin Science and Technology Ltd.
Described cationic ion-exchange resin is following resin:
Name of product manufacturer
001 * 7 strongly acidic styrene type cation exchange resin Shanghai Jin Yang resin Science and Technology Ltd.
Pre-impregnating fluid in described step (4) is processed weekly once, condition is: the pre-impregnating fluid in pre-anticorrosion groove is heated to 35-40 ℃, continue after 2-3 hour, then add in addition pre-impregnating fluid in pre-anticorrosion groove, the liquid level of the pre-impregnating fluid in pre-anticorrosion groove is maintained set the liquid level place to get final product.
Like this, supplement pre-impregnating fluid in good time, allow the liquid level of the pre-impregnating fluid in pre-anticorrosion groove maintain and set the liquid level place, and guarantee that step (4) discharges without waste liquid.
Hydrochloric acid in this method, tartaric acid, hexamethylenetetramine, dodecyl sodium sulfate, APES are commercially available product, and specifying information is as follows:
The accompanying drawing explanation
Fig. 1 is that after using the pre-impregnating fluid described in the embodiment of the present invention 1 and adopting this method of dipping to carry out pre-anticorrosion processing to metal works, the surface of workpiece microscopic appearance is at the transmission electron microscope analysis photo be amplified to after 5000 times.
Fig. 2 is that surface of workpiece microscopic appearance described in Fig. 1 is in the average particle size distribution state diagram after Ma Erwen nano particle size instrument is measured.
The specific embodiment
Embodiment mono-
The pre-anticorrosion method of energy saving and environment friendly metal works comprises the following steps:
(1) by oil-removing rust-removing agent, surface of workpiece is carried out to the degreasing and rust removal processing:
By the planer-type crane, metal works (as the metal shell of cleaner) is immersed in the square degreasing and rust removal groove that oil-removing rust-removing agent is housed, the liquid level of oil-removing rust-removing agent is advisable flooding metal works fully, the internal layer of degreasing and rust removal groove is that acidproof polyfluortetraethylene plate, skin is adiabator layer, utilize oil-removing rust-removing agent through chemical reaction, the degreasing and rust removal that completes metal works in the time of 25 ℃ is processed, processing time is 3 minutes, by observing, when metal works shows its metal true qualities, complete degreasing and rust removal and process;
In processing procedure, first, what adopt downdraft is circulated throughout filter pump (this pump is the poly fourfluoroplastics pump), makes oil-removing rust-removing agent obtain circulation stirring and filtration, and for the groove volume of every cubic metre of degreasing and rust removal groove, the flow that is circulated throughout filter pump is 0.1m
3/ minute, second, greasy dirt flows into square long-pending oil groove by the overflow mode, then realizes the real-time continuous separation of profit by the oil water separator of buyable, and the separative efficiency of oil is 95%;
In step (1), metal works is after degreasing and rust removal is processed, by the planer-type crane, lift by crane described metal works and be located at the top of degreasing and rust removal groove, again described metal works is shaken up and down, jitter amplitude is 1 centimetre, chattering frequency is 6 times/minutes, and the shake time is 1 minute, in order to avoid too much oil-removing rust-removing agent is brought in rinse bath;
In step (1) also the synchronous supersonic generator that adopts metal works is carried out to the ultrasonic wave processing, the supersonic generator buyable, its power is that 1000 watts, frequency are 40KHz, the ultrasonic wave vibration plate is inlaid in wall and the bottom surface in the degreasing and rust removal groove;
When the color of oil-removing rust-removing agent becomes buff, when the speed of its degreasing and rust removal significantly descends, need to change in time oil-removing rust-removing agent;
The preparation method of above-mentioned oil-removing rust-removing agent is: add successively 150 gram hydrochloric acid, 2 gram tartaric acid in the water of 0.8 liter, 30 ℃, stir, as stand-by liquid; Add successively 1 gram hexamethylenetetramine, 2 gram dodecyl sodium sulfates, 2 gram APESs in the water of 0.2 liter, 30 ℃, obtain solution after stirring, this solution is slowly added in stand-by liquid, stir 5 minutes, can make oil-removing rust-removing agent;
(2) clean metal workpiece:
To be immersed in through the metal works of degreasing and rust removal in the square rinse bath that running water is housed and be cleaned, to remove as far as possible the residual acid of surface of workpiece, the residues such as salt, rinse bath adopts corrosion resistant plate to make, the temperature of running water is 25 ℃, in cleaning process, by the rinse water in stainless steel circulating pump continuous sucking rinse bath, and employing particulate filter, anion exchange resin, cationic ion-exchange resin is processed continuously to rinse water, rinse water after being purified also will pump it in potcher and recycle, separately, described metal works is entering, while leaving rinse bath, all obtaining spray processes, the angle of shower water and horizontal plane is 120 degree, its temperature is 25 ℃, flow is 10 liter/mins, pressure is 30000Pa, spray time is 3 minutes, the pH of the rinse water in rinse bath is controlled at 6.5-7.0,
Described anion exchange resin is for having the anion exchange resin of selecting exchangeability to chlorion, tartrate anion ion, described cationic ion-exchange resin is for having the cationic ion-exchange resin of selecting exchangeability to iron ion, and specifying information is as follows:
Described anion exchange resin is following resin:
Name of product manufacturer
201 * semi-finals basicity styrene series anion exchange resin Shanghai Jin Yang resin Science and Technology Ltd.
Described cationic ion-exchange resin is following resin:
Name of product manufacturer
001 * 7 strongly acidic styrene type cation exchange resin Shanghai Jin Yang resin Science and Technology Ltd.;
(3) rinsing metal works:
To be immersed in the square stainless steel potcher that running water is housed and carry out rinsing through the metal works cleaned, a small amount of acid that the clean metal surface of the work is residual, salt etc., surface of workpiece need clean up, keep clean, can not contain greasy dirt and acidic materials, the temperature of running water is 25 ℃, in rinse cycle, by the overflow mode, rinse water in potcher is overflowed in rinse bath, separately, described metal works is entering, while leaving potcher, all obtaining spray processes, the angle of shower water and horizontal plane is 120 degree, its temperature is 25 ℃, flow is 10 liter/mins, pressure is 30000Pa, spray time is 3 minutes, the pH of the rinse water in potcher is controlled at 6.5-7.0,
(4) dry for the first time metal works: by the planer-type crane, lifting is passed through the metal works of rinsing and is located at the top of potcher, be provided with the fan of heater on the planer-type crane, utilize hot blast to be dried described metal works, drying time is 2 minutes, and bake out temperature is 60 ℃;
(5) the pre-anticorrosion processing of metal works:
Surface of workpiece after cleaning is very clean, and very activation, be easy to be corroded, and must carry out immediately pre-anticorrosion processing, and the surface of workpiece after cleaning forms the diaphragm of one deck densification, makes metal works have good corrosion resistance;
To be immersed in the square pre-anticorrosion groove that pre-impregnating fluid is housed through the metal works of drying for the first time, the internal layer of pre-anticorrosion groove is the stainless steel flaggy, skin is heat-insulation layer, the liquid level of pre-impregnating fluid must reach the setting liquid level place in pre-anticorrosion groove, the position of described setting liquid level is at 3/4 place of pre-anticorrosion groove inner chamber height, complete the pre-anticorrosion processing of metal works in the time of 25 ℃, processing time is 30 seconds, in processing procedure, adopt the filter pump that is circulated throughout of downdraft, make pre-impregnating fluid obtain circulation stirring and filtration, for the groove volume of every cubic metre of pre-anticorrosion groove, the flow that is circulated throughout filter pump is 0.1m
3/ minute,
The preparation method of described pre-impregnating fluid, comprise the following steps: at 60 weight portions, add successively 50 weight portions in the perfluoroalkyl acrylate of solid content >=90%, the water-base fluorocarbon emulsion of solid content 48% and 8 weight portions, the water of the Epocryl of solid content >=90% and 10 weight portions, and after abundant stirring and dissolving, add again suspension, and stir, can make described pre-impregnating fluid, the preparation method of the suspension added is: the polyvinylpyrrolidone of 1 weight portion is joined in the absolute ethyl alcohol of 25 weight portions and fully stir, then the micron order or the nanoscale zinc powder that add respectively 8 weight portions, the micron order of 5 weight portions or nanometer glass scale, fully stir, ultrasonic dispersion is 40 minutes again, to form suspension,
Pre-impregnating fluid buyable;
Pre-impregnating fluid in described step (4) is processed weekly once, condition is: the pre-impregnating fluid in pre-anticorrosion groove is heated to 35 ℃, continue after 3 hours, add in addition pre-impregnating fluid again in pre-anticorrosion groove, the liquid level of the pre-impregnating fluid in pre-anticorrosion groove is maintained set the liquid level place get final product, heater is arranged on interior four jiaos of pre-anticorrosion groove;
(6) dry for the second time metal works: lifting is passed through pre-antiseptic metal works and is located at the top of pre-anticorrosion groove, utilizes hot blast to be dried described metal works, and drying time is 2 minutes, and bake out temperature is 70 ℃.
Below, again in conjunction with Fig. 1, Fig. 2, the described metal works reason that its antiseptic effect is improved after pre-anticorrosion processing is analyzed:
It should be noted that, the diameter that the abscissa in Fig. 2 is particle, ordinate are the percentage that the particle under this particle diameter accounts for total particle.
Referring to Fig. 1, Fig. 2, can find out, the particle of pre-impregnating fluid is uniformly dispersed, and average grain diameter is all in the 100nm left and right.These particles form one deck equally distributed nano particle diaphragm in three dimensions at described surface of workpiece; these particles not only can play the effect of the described surface of workpiece of sealing; extend the path that corrosive medium is invaded; slowing down corrosion; but also can play the cathodic protection effect of microcosmos area, make described metal works its antiseptic effect after pre-anticorrosion processing be improved.After testing, pre-impregnating fluid gets final product film forming at 25-30 ℃, at 60-70 ℃, 2-3 minutes, can dry; Under normal storage environment, the anticorrosion phase of described metal works can reach more than 36 months.
For the described metal works after pre-anticorrosion processing, appoint get wherein five as experimental sample, and be numbered respectively 1-No. 5; Then, the Hailin salt spray test chamber that experimental facilities Co., Ltd produces frequently in employing, and, according to GB/T10125-1997 " artificial atmosphere corrosion test salt spray test " national standard, described experimental sample is carried out to the salt air corrosion experiment.Salt spray corrosion test the results are shown in Table 1, the time in table 1 be corresponding experimental sample occur first the corrosion rust spot time.
Table 1
As can be seen from Table 1, after 140 hours, No. 1 first corrosion rust spot appears in experimental sample.Separately, after above-mentioned salt mist experiment is continued to carry out, at 170 hours, a plurality of corrosion rust spots will occur, occur corrosion area in blocks after 200 hours.By the GB/T13171-2004 check, show, pre-impregnating fluid is not phosphorous.
Embodiment bis-
The pre-anticorrosion method of energy saving and environment friendly metal works comprises the following steps:
(1) by oil-removing rust-removing agent, surface of workpiece is carried out to the degreasing and rust removal processing:
By the planer-type crane, metal works (as the metal shell of cleaner) is immersed in the square degreasing and rust removal groove that oil-removing rust-removing agent is housed, the liquid level of oil-removing rust-removing agent is advisable flooding metal works fully, the internal layer of degreasing and rust removal groove is that acidproof polyfluortetraethylene plate, skin is adiabator layer, utilize oil-removing rust-removing agent through chemical reaction, the degreasing and rust removal that completes metal works in the time of 20 ℃ is processed, processing time is 10 minutes, by observing, when metal works shows its metal true qualities, complete degreasing and rust removal and process;
In processing procedure, first, what adopt downdraft is circulated throughout filter pump (this pump is the poly fourfluoroplastics pump), makes oil-removing rust-removing agent obtain circulation stirring and filtration, and for the groove volume of every cubic metre of degreasing and rust removal groove, the flow that is circulated throughout filter pump is 0.2m
3/ minute, second, greasy dirt flows into square long-pending oil groove by the overflow mode, then realizes the real-time continuous separation of profit by the oil water separator of buyable, and the separative efficiency of oil is 95%;
In step (1), metal works is after degreasing and rust removal is processed, by the planer-type crane, lift by crane described metal works and be located at the top of degreasing and rust removal groove, again described metal works is shaken up and down, jitter amplitude is 3 centimetres, chattering frequency is 3 times/minutes, and the shake time is 0.5 minute, in order to avoid too much oil-removing rust-removing agent is brought in rinse bath;
In step (1) also the synchronous supersonic generator that adopts metal works is carried out to the ultrasonic wave processing, the supersonic generator buyable, its power is that 3000 watts, frequency are 20KHz, the ultrasonic wave vibration plate is inlaid in wall and the bottom surface in the degreasing and rust removal groove;
When the color of oil-removing rust-removing agent becomes buff, when the speed of its degreasing and rust removal significantly descends, need to change in time oil-removing rust-removing agent;
The preparation method of above-mentioned oil-removing rust-removing agent is: add successively 200 gram hydrochloric acid, 4 gram tartaric acid in the water of 0.8 liter, 40 ℃, stir, as stand-by liquid; Add successively 5 gram hexamethylenetetramines, 4 gram dodecyl sodium sulfates, 3 gram APESs in the water of 0.2 liter, 40 ℃, obtain solution after stirring, this solution is slowly added in stand-by liquid, stir 15 minutes, can make oil-removing rust-removing agent;
(2) clean metal workpiece:
To be immersed in through the metal works of degreasing and rust removal in the square rinse bath that running water is housed and be cleaned, to remove as far as possible the residual acid of surface of workpiece, the residues such as salt, rinse bath adopts corrosion resistant plate to make, the temperature of running water is 20 ℃, in cleaning process, by the rinse water in stainless steel circulating pump continuous sucking rinse bath, and employing particulate filter, anion exchange resin, cationic ion-exchange resin is processed continuously to rinse water, rinse water after being purified also will pump it in potcher and recycle, separately, described metal works is entering, while leaving rinse bath, all obtaining spray processes, the angle of shower water and horizontal plane is 120 degree, its temperature is 20 ℃, flow is 30 liter/mins, pressure is 30000Pa, spray time is 3 minutes, the pH of the rinse water in rinse bath is controlled at 6.5-7.0,
Described anion exchange resin is for having the anion exchange resin of selecting exchangeability to chlorion, tartrate anion ion, described cationic ion-exchange resin is for having the cationic ion-exchange resin of selecting exchangeability to iron ion, and specifying information is as follows:
Described anion exchange resin is following resin:
Name of product manufacturer
201 * semi-finals basicity styrene series anion exchange resin Shanghai Jin Yang resin Science and Technology Ltd.
Described cationic ion-exchange resin is following resin:
Name of product manufacturer
001 * 7 strongly acidic styrene type cation exchange resin Shanghai Jin Yang resin Science and Technology Ltd.;
(3) rinsing metal works:
To be immersed in the square stainless steel potcher that running water is housed and carry out rinsing through the metal works cleaned, a small amount of acid that the clean metal surface of the work is residual, salt etc., surface of workpiece need clean up, keep clean, can not contain greasy dirt and acidic materials, the temperature of running water is 20 ℃, in rinse cycle, by the overflow mode, rinse water in potcher is overflowed in rinse bath, separately, described metal works is entering, while leaving potcher, all obtaining spray processes, the angle of shower water and horizontal plane is 120 degree, its temperature is 20 ℃, flow is 30 liter/mins, pressure is 30000Pa, spray time is 3 minutes, the pH of the rinse water in potcher is controlled at 6.5-7.0,
(4) dry for the first time metal works: by the planer-type crane, lifting is passed through the metal works of rinsing and is located at the top of potcher, be provided with the fan of heater on the planer-type crane, utilize hot blast to be dried described metal works, drying time is 3 minutes, and bake out temperature is 50 ℃;
(5) the pre-anticorrosion processing of metal works:
Surface of workpiece after cleaning is very clean, and very activation, be easy to be corroded, and must carry out immediately pre-anticorrosion processing, and the surface of workpiece after cleaning forms the diaphragm of one deck densification, makes metal works have good corrosion resistance;
To be immersed in the square pre-anticorrosion groove that pre-impregnating fluid is housed through the metal works of drying for the first time, the internal layer of pre-anticorrosion groove is the stainless steel flaggy, skin is heat-insulation layer, the liquid level of pre-impregnating fluid must reach the setting liquid level place in pre-anticorrosion groove, the position of described setting liquid level is at 3/4 place of pre-anticorrosion groove inner chamber height, complete the pre-anticorrosion processing of metal works in the time of 20 ℃, processing time is 60 seconds, in processing procedure, adopt the filter pump that is circulated throughout of downdraft, make pre-impregnating fluid obtain circulation stirring and filtration, for the groove volume of every cubic metre of pre-anticorrosion groove, the flow that is circulated throughout filter pump is 0.2m
3/ minute,
The preparation method of described pre-impregnating fluid, comprise the following steps: at 70 weight portions, add successively 55 weight portions in the perfluoroalkyl acrylate of solid content >=90%, the water-base fluorocarbon emulsion of solid content 48% and 10 weight portions, the water of the Epocryl of solid content >=90% and 15 weight portions, and after abundant stirring and dissolving, add again suspension, and stir, can make described pre-impregnating fluid, the preparation method of the suspension added is: the polyvinylpyrrolidone of 1.5 weight portions is joined in the absolute ethyl alcohol of 30 weight portions and fully stir, then the micron order or the nanoscale zinc powder that add respectively 10 weight portions, the micron order of 8 weight portions or nanometer glass scale, fully stir, ultrasonic dispersion is 40 minutes again, to form suspension,
Pre-impregnating fluid buyable;
Pre-impregnating fluid in described step (4) is processed weekly once, condition is: the pre-impregnating fluid in pre-anticorrosion groove is heated to 40 ℃, continue after 2 hours, add in addition pre-impregnating fluid again in pre-anticorrosion groove, the liquid level of the pre-impregnating fluid in pre-anticorrosion groove is maintained set the liquid level place get final product, heater is arranged on interior four jiaos of pre-anticorrosion groove;
(6) dry for the second time metal works: lifting is passed through pre-antiseptic metal works and is located at the top of pre-anticorrosion groove, utilizes hot blast to be dried described metal works, and drying time is 3 minutes, and bake out temperature is 60 ℃.
Embodiment tri-
The pre-anticorrosion method of energy saving and environment friendly metal works comprises the following steps:
(1) by oil-removing rust-removing agent, surface of workpiece is carried out to the degreasing and rust removal processing:
By the planer-type crane, metal works (as the metal shell of cleaner) is immersed in the square degreasing and rust removal groove that oil-removing rust-removing agent is housed, the liquid level of oil-removing rust-removing agent is advisable flooding metal works fully, the internal layer of degreasing and rust removal groove is that acidproof polyfluortetraethylene plate, skin is adiabator layer, utilize oil-removing rust-removing agent through chemical reaction, the degreasing and rust removal that completes metal works in the time of 23 ℃ is processed, processing time is 7 minutes, by observing, when metal works shows its metal true qualities, complete degreasing and rust removal and process;
In processing procedure, first, what adopt downdraft is circulated throughout filter pump (this pump is the poly fourfluoroplastics pump), makes oil-removing rust-removing agent obtain circulation stirring and filtration, and for the groove volume of every cubic metre of degreasing and rust removal groove, the flow that is circulated throughout filter pump is 0.15m
3/ minute, second, greasy dirt flows into square long-pending oil groove by the overflow mode, then realizes the real-time continuous separation of profit by the oil water separator of buyable, and the separative efficiency of oil is 95%;
In step (1), metal works is after degreasing and rust removal is processed, by the planer-type crane, lift by crane described metal works and be located at the top of degreasing and rust removal groove, again described metal works is shaken up and down, jitter amplitude is 2 centimetres, chattering frequency is 5 times/minutes, and the shake time is 0.7 minute, in order to avoid too much oil-removing rust-removing agent is brought in rinse bath;
In step (1) also the synchronous supersonic generator that adopts metal works is carried out to the ultrasonic wave processing, the supersonic generator buyable, its power is that 1500 watts, frequency are 30KHz, the ultrasonic wave vibration plate is inlaid in wall and the bottom surface in the degreasing and rust removal groove;
When the color of oil-removing rust-removing agent becomes buff, when the speed of its degreasing and rust removal significantly descends, need to change in time oil-removing rust-removing agent;
The preparation method of above-mentioned oil-removing rust-removing agent is: add successively 175 gram hydrochloric acid, 3 gram tartaric acid in the water of 0.8 liter, 35 ℃, stir, as stand-by liquid; Add successively 3 gram hexamethylenetetramines, 3 gram dodecyl sodium sulfates, 2.5 gram APESs in the water of 0.2 liter, 35 ℃, obtain solution after stirring, this solution is slowly added in stand-by liquid, stir 10 minutes, can make oil-removing rust-removing agent;
(2) clean metal workpiece:
To be immersed in through the metal works of degreasing and rust removal in the square rinse bath that running water is housed and be cleaned, to remove as far as possible the residual acid of surface of workpiece, the residues such as salt, rinse bath adopts corrosion resistant plate to make, the temperature of running water is 23 ℃, in cleaning process, by the rinse water in stainless steel circulating pump continuous sucking rinse bath, and employing particulate filter, anion exchange resin, cationic ion-exchange resin is processed continuously to rinse water, rinse water after being purified also will pump it in potcher and recycle, separately, described metal works is entering, while leaving rinse bath, all obtaining spray processes, the angle of shower water and horizontal plane is 120 degree, its temperature is 23 ℃, flow is 20 liter/mins, pressure is 30000Pa, spray time is 3 minutes, the pH of the rinse water in rinse bath is controlled at 6.5-7.0,
Described anion exchange resin is for having the anion exchange resin of selecting exchangeability to chlorion, tartrate anion ion, described cationic ion-exchange resin is for having the cationic ion-exchange resin of selecting exchangeability to iron ion, and specifying information is as follows:
Described anion exchange resin is following resin:
Name of product manufacturer
201 * semi-finals basicity styrene series anion exchange resin Shanghai Jin Yang resin Science and Technology Ltd.
Described cationic ion-exchange resin is following resin:
Name of product manufacturer
001 * 7 strongly acidic styrene type cation exchange resin Shanghai Jin Yang resin Science and Technology Ltd.;
(3) rinsing metal works:
To be immersed in the square stainless steel potcher that running water is housed and carry out rinsing through the metal works cleaned, a small amount of acid that the clean metal surface of the work is residual, salt etc., surface of workpiece need clean up, keep clean, can not contain greasy dirt and acidic materials, the temperature of running water is 23 ℃, in rinse cycle, by the overflow mode, rinse water in potcher is overflowed in rinse bath, separately, described metal works is entering, while leaving potcher, all obtaining spray processes, the angle of shower water and horizontal plane is 120 degree, its temperature is 23 ℃, flow is 20 liter/mins, pressure is 30000Pa, spray time is 3 minutes, the pH of the rinse water in potcher is controlled at 6.5-7.0,
(4) the pre-anticorrosion processing of metal works:
Surface of workpiece after cleaning is very clean, and very activation, be easy to be corroded, and must carry out immediately pre-anticorrosion processing, and the surface of workpiece after cleaning forms the diaphragm of one deck densification, makes metal works have good corrosion resistance;
To be immersed in through the metal works of rinsing in the square pre-anticorrosion groove that pre-impregnating fluid is housed, the internal layer of pre-anticorrosion groove is the stainless steel flaggy, skin is heat-insulation layer, the liquid level of pre-impregnating fluid must reach the setting liquid level place in pre-anticorrosion groove, the position of described setting liquid level is at 3/4 place of pre-anticorrosion groove inner chamber height, complete the pre-anticorrosion processing of metal works in the time of 23 ℃, processing time is 45 seconds, in processing procedure, adopt the filter pump that is circulated throughout of downdraft, make pre-impregnating fluid obtain circulation stirring and filtration, for the groove volume of every cubic metre of pre-anticorrosion groove, the flow that is circulated throughout filter pump is 0.15m
3/ minute,
The preparation method of described pre-impregnating fluid, comprise the following steps: at 65 weight portions, add successively 53 weight portions in the perfluoroalkyl acrylate of solid content >=90%, the water-base fluorocarbon emulsion of solid content 48% and 9 weight portions, the water of the Epocryl of solid content >=90% and 13 weight portions, and after abundant stirring and dissolving, add again suspension, and stir, can make described pre-impregnating fluid, the preparation method of the suspension added is: the polyvinylpyrrolidone of 1.3 weight portions is joined in the absolute ethyl alcohol of 27 weight portions and fully stir, then the micron order or the nanoscale zinc powder that add respectively 9 weight portions, the micron order of 6 weight portions or nanometer glass scale, fully stir, ultrasonic dispersion is 40 minutes again, to form suspension,
Pre-impregnating fluid buyable;
Pre-impregnating fluid in described step (4) is processed weekly once, condition is: the pre-impregnating fluid in pre-anticorrosion groove is heated to 37 ℃, continue after 2.5 hours, add in addition pre-impregnating fluid again in pre-anticorrosion groove, the liquid level of the pre-impregnating fluid in pre-anticorrosion groove is maintained set the liquid level place get final product, heater is arranged on interior four jiaos of pre-anticorrosion groove;
(5) after the pre-anticorrosion processing of metal works, metal works is carried out to the nature airing.
Separately, oil-removing rust-removing agent uses a period of time, when it can't continue to use, and can be converted into flocculant by conventional method, realizes zero pollutant discharge, turns waste into wealth.
In sum, after adopting this method, the preservative treatment effect of metal works is better, and under normal storage environment, the anticorrosion phase of described metal works can reach more than 36 months.Like this, the long service life of metal works, engineering structure is safer.
Claims (9)
1. the pre-anticorrosion method of energy saving and environment friendly metal works, comprise the following steps: (1) carries out the degreasing and rust removal processing by oil-removing rust-removing agent to surface of workpiece; (2) clean metal workpiece; (3) rinsing metal works; It is characterized in that: it is further comprising the steps of:
(4) the pre-anticorrosion processing of metal works: metal works is immersed in the pre-anticorrosion groove that pre-impregnating fluid is housed, the liquid level of pre-impregnating fluid must reach the setting liquid level place in pre-anticorrosion groove, the position of described setting liquid level is at 3/4 place of pre-anticorrosion groove inner chamber height, complete the pre-anticorrosion processing of metal works in the time of 20-25 ℃, processing time is 30-60 second, in processing procedure, adopt the filter pump that is circulated throughout of downdraft, make pre-impregnating fluid obtain circulation stirring and filtration, for the groove volume of every cubic metre of pre-anticorrosion groove, the flow that is circulated throughout filter pump is 0.1-0.2m
3/ minute.
2. the pre-anticorrosion method of energy saving and environment friendly metal works as described as claim l is characterized in that:
Described step (3) is first dried metal works afterwards for the first time, again metal works is carried out to pre-anticorrosion processing, the condition of drying for the first time is: lifting is passed through the metal works of rinsing and is located at the top of potcher, utilize hot blast to be dried described metal works, drying time is 2-3 minute, and bake out temperature is 50-60 ℃;
Step (4) is carried out the nature airing or dries for the second time metal works afterwards, the condition of drying for the second time is: lifting is passed through pre-antiseptic metal works and is located at the top of pre-anticorrosion groove, utilize hot blast to be dried described metal works, drying time is 2-3 minutes, and bake out temperature is 60-70 ℃.
3. as claim l or the pre-anticorrosion method of 2 described energy saving and environment friendly metal works, it is characterized in that:
The condition that in described step (1), the surface of workpiece degreasing and rust removal is processed is: metal works is immersed in the degreasing and rust removal groove that oil-removing rust-removing agent is housed, utilize oil-removing rust-removing agent through chemical reaction, the degreasing and rust removal that completes metal works in the time of 20-25 ℃ is processed, processing time is 3-10 minute, in processing procedure, first, adopt the filter pump that is circulated throughout of downdraft, make oil-removing rust-removing agent obtain circulation stirring and filtration, for the groove volume of every cubic metre of degreasing and rust removal groove, the flow that is circulated throughout filter pump is 0.1-0.2m
3/ minute, second, greasy dirt flows into long-pending oil groove by the overflow mode, then realizes the real-time continuous separation of profit by oil water separator;
The preparation method of above-mentioned oil-removing rust-removing agent is: add successively 150-200 gram hydrochloric acid, 2-4 gram tartaric acid in the water of 0.8 liter, 30-40 ℃, stir, as stand-by liquid; Add successively 1-5 gram hexamethylenetetramine, 2-4 gram dodecyl sodium sulfate, 2-3 gram APES in the water of 0.2 liter, 30-40 ℃, obtain solution after stirring, this solution is slowly added in stand-by liquid, stir 5-15 minute, can make oil-removing rust-removing agent.
4. the pre-anticorrosion method of energy saving and environment friendly metal works as claimed in claim 1 or 2 is characterized in that:
In described step (2), the condition of clean metal workpiece is: will be immersed in the rinse bath that running water is housed and be cleaned through the metal works of degreasing and rust removal, the temperature of running water is 20-25 ℃, in cleaning process, by the rinse water in circulating pump continuous sucking rinse bath, and employing particulate filter, anion exchange resin, cationic ion-exchange resin is processed continuously to rinse water, rinse water after being purified also will pump it in potcher, separately, described metal works is entering, while leaving rinse bath, all obtaining spray processes, the angle of shower water and horizontal plane is 120 degree, its temperature is 20-25 ℃, flow is 10-30 liter/min, pressure is 30000Pa, spray time is 3 minutes, the pH of the rinse water in rinse bath is controlled at 6.5-7.0.
5. the pre-anticorrosion method of energy saving and environment friendly metal works as claimed in claim 1 or 2, it is characterized in that: in described step (3), the condition of rinsing metal works is: will be immersed in the potcher that running water is housed and carry out rinsing through the metal works cleaned, the temperature of running water is 20-25 ℃, in rinse cycle, by the overflow mode, rinse water in potcher is overflowed in rinse bath, separately, described metal works is entering, while leaving potcher, all obtaining spray processes, the angle of shower water and horizontal plane is 120 degree, its temperature is 20-25 ℃, flow is 10-30 liter/min, pressure is 30000Pa, spray time is 3 minutes, the pH of the rinse water in potcher is controlled at 6.5-7.0.
6. the pre-anticorrosion method of energy saving and environment friendly metal works as claimed in claim 1 or 2, it is characterized in that: the preparation method of pre-impregnating fluid in described step (4), comprise the following steps: at 60～70 weight portions, add successively 50～55 weight portions in the perfluoroalkyl acrylate of solid content >=90%, the water-base fluorocarbon emulsion of solid content 48% and 8～10 weight portions, the water of the Epocryl of solid content >=90% and 10～15 weight portions, and after abundant stirring and dissolving, add again suspension, and stir, can make described pre-impregnating fluid, the preparation method of the suspension added is: the polyvinylpyrrolidone of 1～1.5 weight portion is joined in the absolute ethyl alcohol of 25～30 weight portions and fully stir, then the micron order or the nanoscale zinc powder that add respectively 8～10 weight portions, the micron order of 5～8 weight portions or nanometer glass scale, fully stir, ultrasonic dispersion is 40 minutes again, to form suspension.
7. the pre-anticorrosion method of energy saving and environment friendly metal works as claimed in claim 3, it is characterized in that: in described step (1) also the synchronous supersonic generator that adopts metal works is carried out to the ultrasonic wave processing, the power of supersonic generator is that 0-3000 watts, frequency are 20-40KHz;
In described step (1), metal works is after degreasing and rust removal is processed, lift by crane described metal works and be located at the top of degreasing and rust removal groove, more described metal works is shaken up and down, jitter amplitude is 1-3 centimetres, chattering frequency is 3-6 times/minutes, and the shake time is 0.5-1 minute.
8. the pre-anticorrosion method of energy saving and environment friendly metal works as claimed in claim 4, it is characterized in that: the anion exchange resin in described step (2) is for having the anion exchange resin of selecting exchangeability to chlorion, tartrate anion ion, the cationic ion-exchange resin in described step (2) is for having the cationic ion-exchange resin of selecting exchangeability to iron ion.
9. the pre-anticorrosion method of energy saving and environment friendly metal works as claimed in claim 6, it is characterized in that: the pre-impregnating fluid in described step (4) is processed weekly once, condition is: the pre-impregnating fluid in pre-anticorrosion groove is heated to 35-40 ℃, continue after 2-3 hour, add in addition pre-impregnating fluid again in pre-anticorrosion groove, the liquid level of the pre-impregnating fluid in pre-anticorrosion groove is maintained set the liquid level place to get final product.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921389A (en) * | 2016-06-07 | 2016-09-07 | 苏州天朋精密元器件有限公司 | Surface coating treating method for metal workpiece |
| CN112024341A (en) * | 2020-07-09 | 2020-12-04 | 中船第九设计研究院工程有限公司 | Surface treatment process of T-shaped component for ship |
| CN115445892A (en) * | 2022-10-21 | 2022-12-09 | 乔冠应用材料(淮安)有限公司 | Anticorrosion treatment process for copper material strip coil cutting surface |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041010A (en) * | 1988-09-09 | 1990-04-04 | 淮北矿务局科研所 | Steel derusting, passivation novel process |
| CN102114460A (en) * | 2011-03-24 | 2011-07-06 | 常州市骠马涂装***工程有限公司 | Pretreatment process for coating |
| CN102691057A (en) * | 2012-06-17 | 2012-09-26 | 吴昊 | Metal surface treating agent replacing phosphating solution and preparation method and application thereof |
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2013
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041010A (en) * | 1988-09-09 | 1990-04-04 | 淮北矿务局科研所 | Steel derusting, passivation novel process |
| CN102114460A (en) * | 2011-03-24 | 2011-07-06 | 常州市骠马涂装***工程有限公司 | Pretreatment process for coating |
| CN102691057A (en) * | 2012-06-17 | 2012-09-26 | 吴昊 | Metal surface treating agent replacing phosphating solution and preparation method and application thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921389A (en) * | 2016-06-07 | 2016-09-07 | 苏州天朋精密元器件有限公司 | Surface coating treating method for metal workpiece |
| CN112024341A (en) * | 2020-07-09 | 2020-12-04 | 中船第九设计研究院工程有限公司 | Surface treatment process of T-shaped component for ship |
| CN115445892A (en) * | 2022-10-21 | 2022-12-09 | 乔冠应用材料(淮安)有限公司 | Anticorrosion treatment process for copper material strip coil cutting surface |
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Effective date of registration: 20230412 Address after: Room 301, 3rd Floor, No. 8 Longping South Road, Zhanjiang Development Zone, Zhanjiang City, Guangdong Province, 524000 Patentee after: GUANGDONG HENGLI INFORMATION TECHNOLOGY Co.,Ltd. Address before: No. 2 Changle Road, Bengbu City, Anhui Province, 233000 (current house number 414) Patentee before: ANHUI HANGDA ECOLOGICAL MATERIAL CO.,LTD. |