CN102839365A - Environmental-friendly type multifunctional steel surface treating fluid - Google Patents
Environmental-friendly type multifunctional steel surface treating fluid Download PDFInfo
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- CN102839365A CN102839365A CN2012101045509A CN201210104550A CN102839365A CN 102839365 A CN102839365 A CN 102839365A CN 2012101045509 A CN2012101045509 A CN 2012101045509A CN 201210104550 A CN201210104550 A CN 201210104550A CN 102839365 A CN102839365 A CN 102839365A
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Abstract
The invention provides the introduction of a process of environmental-friendly type multifunctional steel surface treating fluid. The process is characterized by: 1, influence on coating quality in a pre-treating step before coating: 1) thoroughly cleaning greasy dirt and rust on the surface of a steel piece, so that no residual strong acid molecules are generated, and the possibility that the erosion is continued from the inside of the working piece after coating can be avoided; 2, influence on the coating quality after coating: 1) liquid medicine is combined with various paints, so that the erosion after coating is greatly improved when being compared with the traditional method; the anti-impact property can reach 50 kg/cm; and the adhesion force reaches the international first-level standard; 3, influence on equipment maintenance after coating: 1) the environmental-friendly type multifunctional steel surface treating fluid can be sprayed on an oil paint membrane with the rust and greases, or is directly treated in a coating and brushing manner, so that the liquid medicine can penetrate the paint membrane, and can directly react with the rust below the paint membrane; the existing paint membrane is not influenced; and the environmental-friendly type multifunctional steel surface treating fluid can be directly coated after a treating process; and 2) the process requirements in the equipment maintenance has the advantages of simple process requirements; a great amount of national resources, such as water, electricity and the like, can be saved in operation; and the labor strength and the manual cost can be reduced.
Description
Technical field
The present invention relates to a kind of steel surface treatment technology, be expressed as the environment-friendly type multifunctional steel surface treatment liquid particularly.
Background technology
According to incompletely statistics, 1/3 of the annual steel output in the whole world lose because of corrosion; The steel in the whole world 33.6% in 2010 are used in China; The direct economic loss that the annual invar iron rot of China causes accounts for 4% of gross national product, and the financial loss that annual invar iron rot causes is crossed trillion yuan Renminbi.At present, the steel anti-corrosive technology of China particularly application in advance (preceding) treatment process lag far behind level of developed countries, Chinese Enterprise is generally used at present is still traditional application pretreatment technology, like the strong acid and strong base method; The ball blast method that sandblasts; Power tool method etc.These traditional steel surface pre-treating process can cause serious environmental to pollute; The national water power equal energy source of a large amount of losses; Iron and steel is caused degree of depth corrosion and then influences coating quality; In the treatment process process, also can seriously jeopardize workman's health of human body and safety.
The patent of publication number CN1294204A discloses a kind of " multifunctional treating liquid for surface of iron or steel ", wherein contains the toxic substance thiocarbamide in the prescription, can't be called environmentfriendly products.Publication number is to contain poisonous carcinogenic substance such as Sodium Nitrite in the said prescription of the patent of CN1916236, and can use after the temperature in need being heated to, and causes soup in use to produce a large amount of residues, needs regular scarfing cinder radioactive waste liquid side by side.
Summary of the invention
The invention provides that a kind of to collect oil removing, rust cleaning, phosphatization, passivation be the environment-friendly type multifunctional steel surface treatment liquid of one.The objective of the invention is to simplify production technique; Significantly reduce labor strength; In the treatment process process, improve discharging and problem of environmental pollution; Practice thrift national energy; Improve enterprises production efficiency, reduce the enterprise production cost; Improving steel surface handles and coating quality.
For achieving the above object, the technical scheme that the present invention adopts, promptly to press raw material weight per-cent proportioning following for technical formula:
Phosphoric acid (85%) 28-35%
Primary zinc phosphate 1-3%
Organic acid 2-5%
Zinc nitrate 2-3%
Polyoxyethylene glycol 0.5-0.8%
Oxidation promotor 0.6-1%
Complexing agent 0.3-1%
Tensio-active agent 0.6-2.2%
The pure water surplus
Each action principle of above-mentioned component is: phosphoric acid has replaced strong acid such as hydrochloric acid, sulfuric acid, nitric acid as intensity mineral acid in a kind of, both can play the function of rust cleaning, is again one of main film forming substance of phosphatize phosphate coat; Primary zinc phosphate also is one of main film forming substance of phosphatize phosphate coat; The organic acid of stating is that in Hydrocerol A, tartrate, the oxalic acid one or more are composite, both can increase the free acidity of solution and guarantee the continual and steady of solution total acidity, has promoter action for rust cleaning; Described zinc nitrate can be zinc oxide or zinc sulfate also, in film process, plays synergy; Described molecular weight polyethylene glycol should be more than 4000, and promptly Macrogol 4000 or polyethylene glycol 6000 or cetomacrogol 1000 0 increase dispersiveness and the solvability of prescription each component in solution; Described oxidation promotor is that in ammonium molybdate, the Sodium orthomolybdate one or more are composite, in phosphatization and passivating process, plays the promoted effect of oxidation; Described complexing agent is that in Trisodium Citrate, EDTA---disodium, the Seignette salt one or more are composite, plays the minimizing residue, the effect of complexing soup and corrosion reactant at soup in to the workpiece treating processes; Described tensio-active agent can be that in OP-10, X 2073, the sodium lauryl sulphate one or more are composite, the oil removing effect of play infiltration, emulsification, peeling off.
The present technique invention has the following advantages and effect:
The present invention do not contain strong acid and strong base, do not contain VOC, do not contain toxic substance such as Sodium Nitrite, not quick-fried, do not burn, non-volatile, do not hinder skin, free from environmental pollution, do not have " three wastes " discharging in use; Meet the Chinese government fully at present to the requirement of environment protection and labour protection, can efficiently thoroughly solve at present in the steel surface preprocessing process serious problems of not only damaging workers ' health but also contaminate environment.
The present invention has realized rust cleaning, degreasing, phosphatization, the passivation one step completion of steel surface; Easy to use, under normal temperature (15-35 ℃) condition, carry out with several different methods such as dipping, spray, brushings; The present invention can hold effect and recycle not " three wastes " discharging repeatedly; Product can not produce no any corrosion to iron and steel in the degreasing and rust removal process, do not produce gas, can not cause the hydrogen embrittlement phenomenon to iron and steel inside; Iron and steel parts after the processing does not need to use flushing with clean water again, after ventilation air dry or oven dry, can directly spray paint, baking vanish, plastic-blasting, operation such as zinc-plated, has saved the water electricity consumption of enterprise greatly, has practiced thrift a large amount of national energy.
The present invention is little acid type treatment solution, has no irritating odor, and human body skin is not had injury, and factory building and production unit are not had corrosion.In use simplify technical process, reduce labour intensity, realized that the green of enterprise cleans production.
Iron and steel parts after handling through the present invention, the phosphatize phosphate coat compact crystallization, shock-resistant, solidity to corrosion and strong adhesion, alternative all kinds of rust-proofing primers are applicable to pretreatment technology and service procedure application after of all steel pieces before application.
Physical and chemical index of the present invention is following:
1) outward appearance light green transparent liquid;
2) density 1.18-1.26;
3) total acidity 650-700;
4) free acidity 230-280;
5) pH value 1-1.5;
6) viscosity >=10;
7) flash-point does not have;
8) solids content % >=30;
9) rust cleaning rate is more than 99%;
10) oil removing ability moisture film is continuous, does not break
Use the phosphatize phosphate coat physical and chemical index that is generated behind the present invention following:
1) rete color grey or silver gray
2) build 2---20 μ m
3) sticking power is 1 grade
4) shock-resistance cm 50kg
5) oil-proofness (10# machine oil) 24h is non-foaming, wrinkle resistant, does not come off
6) anti-gasoline (93# gasoline) 4h is non-foaming, wrinkle resistant, does not come off
7) resistance to salt water (3%NaCl 24h) dries up not have and returns rust
Reference standard is GB/T12612-2005 " a multifunctional treating liquid for surface of iron or steel general technical specifications ".
Concrete method of use and precaution are following:
Squeegee process picks the method that the soup direct brushing is handled at workpiece surface with banister brush; The workpiece that is primarily aimed at the maintenance of outdoor equipment and is difficult to handle with additive method; Compare traditional ball blast sandblasting, can carry out real-time servicing, significantly reduce maintenance cost; Improve maintenance quality, reach permanent maintenance time.
Should wear rubber gloves and mouth mask during the squeegee process construction
Required equipment acid-resistant container, acidproof hairbrush (non-animal wool is made)
Treatment step
1, the serious greasy dirt on surface, serious corrosion, dust are simply cleared up to workpiece to be handled.
2, pending workpiece keeps flat as far as possible, picks soup with banister brush and fully covers workpiece surface, and the brushing back was carried out the secondary brushing in 1-3 minute first.
3, obstinate corrosion can be brushed with scrub-brush earlier back and forth, the back by the single direction brushing to till the original color of metal occurs.
Normal temperature circulation immersion method directly immerses the method for handling in the treating pond of soup that holds with pending workpiece; Be applicable to rule and irregular workpiece and the inconvenient large-scale treating pond that installs ultrasonic device additional; Compare the treatment process of pickling and ball blast sandblast, environmental protection and energy saving, the treatment time is fast; Operation is simple, the non-processor dead angle.Can significantly reduce the product cost of supporting one's family, improve the product coating quality.
Required equipmentAcidproof pond, circulating filtration equipment, (heating installation)
Method of use
1, the serious greasy dirt on surface, serious corrosion, dust are simply cleared up to workpiece to be handled.
2, soak workpiece into the liquid fully.
2.1 soup soaks 5-30min usually at normal temperature (15 ℃-35 ℃), crosses the low suitably heating that needs like temperature.
2.2 in immersion process, need to add circulating filtration equipment, filtering residue dirt, the circulation soup plays souring to corrosion.
If must not be about 40 ℃ above 50 ℃ 2.3 remove heavily that rust or oxide debris soak time want proper extension and soup is heated to.
3, the workpiece after the processing need uprightly be placed on air seasoning place, keeps away the manual-free touching or contacts other pollutions (water, dust, sweat)
4, general fine surface drying time at 25 ℃ is about 2-4h, does solid work (formation phosphatize phosphate coat) and is 12-18h (formation phosphatize phosphate coat), adopts and does solid work the formation phosphatize phosphate coat about 100 ℃ of-150 ℃ of drying plant 20-30min, and ventilated type drying plant effect is better.
5, in use may prolong to some extent, at this moment can suitably add new soup to guarantee result of use along with rising treatment time of pH value.
The ultrasonic immersion treatment method of normal temperature is seen accompanying drawing 1: pending workpiece is directly immersed the treating pond that holds soup; Open the method that ultrasonic device is handled, be applicable to rule and irregular workpiece, compare the treatment process of pickling and ball blast sandblast; Environmental protection and energy saving; Treatment time is fast, and operation is simple, the non-processor dead angle.Can significantly reduce the product cost of supporting one's family, improve the product coating quality.
Required equipmentUltrasonic cleaning pond (also available common pickling tub adds independent ultrasonic device), straining installation, (heating installation)
Treatment step
1, the serious greasy dirt on surface, serious corrosion, dust are simply cleared up to workpiece to be handled.
2, workpiece is immersed ultrasonic cleaning device.
2.1 soup at the common supersound process 2-10min of normal temperature (15 ℃-35 ℃), is crossed the low suitably heating that needs like temperature.Ultrasonic device makes the soup vibrations, and workpiece is played souring.
2.2 in immersion process, need to add straining installation filtering residue dirt.
If must not be about 40 ℃ above 50 ℃ 2.3 remove heavily that rust or oxide debris treatment time want proper extension and soup is heated to.
3, the workpiece after the processing need uprightly be placed on air seasoning place, keeps away the manual-free touching or contacts other pollutions (water, dust, sweat)
4, general fine surface drying time at 25 ℃ is about 2-4h, does solid work (formation phosphatize phosphate coat) and is 12-18h, does solid work and forms phosphatize phosphate coat in the process, adopts and does solid work the formation phosphatize phosphate coat about 100 ℃ of-150 ℃ of drying plant 20-30min, and ventilated type drying plant effect is better.
5, in use may prolong to some extent, at this moment can suitably add new soup to guarantee result of use along with rising treatment time of pH value.
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Spraying process: pending workpiece is directly got into spray chamber with the treatment process that suitable pressure sprays, be applicable to the comparatively workpiece of rule, compare the treatment process of ball blast sandblast; Environmental protection and energy saving, the treatment time is fast, and surface smoothness is high; Operation is simple, the non-processor dead angle.Can significantly reduce the product cost of supporting one's family, improve the product coating quality.
Required equipmentSprinkling equipment accompanying drawing 2, straining installation
Treatment step
1, the serious greasy dirt on surface, serious corrosion, dust are simply cleared up to workpiece to be handled.
2, make the soup spray in the corrosion and greasy dirt of workpiece surface, with the pressure more than 2.5 kilograms until the worker
The corrosion and the greasy dirt on part surface are thoroughly cleaned out.
2.1 must throw out be removed by filter in the spraying method working process, filter continued and use.(soup that reclaims in the working process can continue to use after throw out is filtered)
3, the workpiece after the processing need uprightly be placed on air seasoning place, keeps away the manual-free touching or contacts other pollutions (water, dust, sweat)
4, general fine surface drying time at 25 ℃ is about 2-4h, does solid work (formation phosphatize phosphate coat) and is 12-18h (formation phosphatize phosphate coat).Adopt about 100 ℃ of-150 ℃ of drying plant 20-30min and do solid work the formation phosphatize phosphate coat, ventilated type drying plant effect is better.
5, in use may prolong to some extent, at this moment can suitably add new soup to guarantee result of use along with rising treatment time of pH value.
Precaution
1. the workpiece of handling workpiece in drying process must not be drenched with rain, and must not glue dust, before workpiece surface is done solid work, must not paint.
2. in use need the circulated filter system filtration residue to guarantee the working fluid cleaning.
3. the residue that filters out adds can directly work as vegetable fertilizer after 10% unslaked lime stirs.
4. this liquid can stir or shake up continued and use if a little deposition occurs, and effect is constant.
5. this liquid can distribute slight tart flavour when carrying out chemical reaction with the iron and steel rusty scale, and people and moving (planting) thing are not had injury.
6. steel surface corrosion thickness difference is handled the inconsistent normal phenomenon that belongs in stepmother's body colour pool through this liquid.
7. because factors such as soak time, corrosion thickness cause the conversion film surface to have water mark, dust (whiting) to belong to normal phenomenon, do not influence preservative effect.
8. it is bigger influenced by objective environment the time of drying of conversion film, will grasp flexibly during construction.
9. this liquid must could obtain best preservative effect with the supporting use of finish paint.
10. as accidentally working fluid being spattered like eyes, get final product with a large amount of flushing with clean water
1. product matched auxiliaring equipment:
2. the supporting solution example of product typicalness
The product multifunctional treating liquid for surface of iron or steel
The matched auxiliaring equipment mark
1 heating installation can be selected the utility appliance of adding, and is used for product in the winter time or the use when handling oxide debris;
2 recycle units guarantee that product in use flows constantly, reacts with steel surface fully;
3 straining installations guarantee that the residue that product in use produces filters constantly, gives full play to the high efficiency of soup;
4 ultrasonic vibrations equipment can be selected the utility appliance of adding, and are used for speed up processing;
The equipment of 5 sprinkling equipments necessary use of institute when adopting spraying process that steel surface is handled;
6 wind are cut equipment can select the utility appliance of adding, and can reduce the time of natural air drying;
Steel surface the utility appliance in drying process of 7 drying plants after product is handled;
Embodiment of the invention 1: prepare 100 kilograms of environment-friendly type multifunctional steel surface treatment liquids
1. after volume is to add the 20kg pure water in the plastic tank of 50L, under continuous stirring condition, add 2.2kg zinc nitrate, 2kg organic acid (Hydrocerol A) successively, be stirred to dissolving fully after, it is for use to make solution A.
2. after volume is to add the 15kg pure water in the plastic tank of 30L; Be no more than under 30 degrees centigrade of also continuous stirring condition in room temperature; Add 0.5kg polyoxyethylene glycol (Macrogol 4000), 0.8kg oxidation promotor (ammonium molybdate), 1.0kg complexing agent (Seignette salt) successively; After being stirred to fully the dissolving back and leaving standstill 15 minutes, it is for use to make solution B.
3. be have (stainless steel or the plastic material) in the retort that rotating ratio is the 1:18 electric mixer of 200L at volume, behind the 25kg pure water of adding surplus, start stirring; Slowly pour into 30kg phosphoric acid in the retort then; After treating water and phosphoric acid thorough mixing, add 2.5kg primary zinc phosphate, 1.0kg tensio-active agent (OP-10) successively, be stirred to fully dissolving after; Add solution A and the solution B that has made successively, the adding of A and B pitch time should be at least more than 30 minutes.Continue fully to stir after 1 hour, filter and obtain the 100kg finished product.
Embodiment of the invention 2: prepare 100 kilograms of environment-friendly type multifunctional steel surface treatment liquids
1. after volume is to add the 22kg pure water in the plastic tank of 50L, under continuous stirring condition, add 3.0kg zinc sulfate, 3.5kg organic acid (tartrate) successively, be stirred to dissolving fully after, it is for use to make solution A.
2. after volume is to add the 20kg pure water in the plastic tank of 30L; Be no more than under 30 degrees centigrade of also continuous stirring condition in room temperature; Add 0.8kg polyoxyethylene glycol (cetomacrogol 1000 0), 1.0kg oxidation promotor (Sodium orthomolybdate), 0.6kg complexing agent (EDTA-2 sodium) successively; After being stirred to fully the dissolving back and leaving standstill 15 minutes, it is for use to make solution B.
3. at volume have (stainless steel or the plastic material) in the retort that rotating ratio is the 1:18 electric mixer of 200L; After adding the 13.6kg pure water of surplus; Start stirring, then 32kg phosphoric acid slowly poured in the retort, treat water and phosphoric acid thorough mixing after; Add 2.0kg primary zinc phosphate, 1.5kg tensio-active agent (X 2073) successively; After being stirred to dissolving fully, add solution A and the solution B that has made successively, the adding of A and B pitch time should be at least more than 30 minutes.Continue fully to stir after 1 hour, filter and obtain the 100kg finished product.
Embodiment of the invention 3: prepare 100 kilograms of environment-friendly type multifunctional steel surface treatment liquids
1. after volume is to add the 18kg pure water in the plastic tank of 50L, under continuous stirring condition, add 2.0kg zinc nitrate, 2.4kg organic acid (1.0kg Hydrocerol A+1.4kg oxalic acid) successively, be stirred to dissolving fully after, it is for use to make solution A.
2. after volume is to add the 18kg pure water in the plastic tank of 30L; Be no more than under 30 degrees centigrade of also continuous stirring condition in room temperature; Add 0.5kg polyoxyethylene glycol (Macrogol 4000), 0.6kg oxidation promotor (ammonium molybdate), 0.3kg complexing agent (0.15kg Seignette salt+0.15kg EDTA-2 sodium) successively; After being stirred to fully the dissolving back and leaving standstill 15 minutes, it is for use to make solution B.
3. be have (stainless steel or the plastic material) in the retort that rotating ratio is the 1:18 electric mixer of 200L at volume, behind the 18.2kg pure water of adding surplus, start stirring; Slowly pour into 35kg phosphoric acid in the retort then; After treating water and phosphoric acid thorough mixing, add 3.0kg primary zinc phosphate, 2.0kg tensio-active agent (OP-10) successively, be stirred to fully dissolving after; Add solution A and the solution B that has made successively, the adding of A and B pitch time should be at least more than 30 minutes.Continue fully to stir after 1 hour, filter and obtain the 100kg finished product.
Description of drawings
Fig. 1 is the ultrasonic immersion treatment figure of normal temperature; Fig. 2 is sprinkling equipment figure.
Claims (6)
1. environment-friendly type multifunctional steel surface treatment liquid: form by raw materials such as phosphoric acid, membrane-forming agent, organic acid, dispersion agent, oxidation promotor, complexing agent, tensio-active agents, it is characterized in that:
Concrete proportioning raw materials of the present invention is following:
Phosphoric acid (85%) 28-35% (by weight percentage)
Primary zinc phosphate 1-3%
Organic acid 2-5%
Zinc nitrate 2-3%
Polyoxyethylene glycol 0.5-0.8%
Oxidation promotor 0.6-1%
Complexing agent 0.3-1%
Tensio-active agent 0.6-2.2%
The pure water surplus
Environment-friendly type multifunctional steel surface treatment liquid according to claim 1 is characterized in that: described organic acid is that in Hydrocerol A, tartrate, the oxalic acid one or more are composite.
2. environment-friendly type multifunctional steel surface treatment liquid according to claim 1 is characterized in that: described zinc nitrate also can be zinc oxide or zinc sulfate.
3. environment-friendly type multifunctional steel surface treatment liquid according to claim 1 is characterized in that: described molecular weight polyethylene glycol should be more than 4000, i.e. Macrogol 4000 or polyethylene glycol 6000 or cetomacrogol 1000 0.
4. environment-friendly type multifunctional steel surface treatment liquid according to claim 1 is characterized in that: described oxidation promotor is that in ammonium molybdate, the Sodium orthomolybdate one or more are composite.
5. environment-friendly type multifunctional steel surface treatment liquid according to claim 1 is characterized in that: described complexing agent is that in Trisodium Citrate, EDTA---disodium, the Seignette salt one or more are composite.
6. environment-friendly type multifunctional steel surface treatment liquid according to claim 1 is characterized in that: described tensio-active agent can be that in OP-10, X 2073, the sodium lauryl sulphate one or more are composite.
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| CN104060259A (en) * | 2014-06-30 | 2014-09-24 | 句容市博远电子有限公司 | Environment-friendly phosphating solution and preparation method thereof |
| CN104164662A (en) * | 2014-07-30 | 2014-11-26 | 武汉钢铁(集团)公司 | Roller coating conversion treatment agent for colored coated steel plate |
| CN105039993A (en) * | 2015-07-21 | 2015-11-11 | 安徽江威精密制造有限公司 | Copper piece antirust agent and preparation method and application thereof |
| CN105256321A (en) * | 2015-10-30 | 2016-01-20 | 湖南金化科技集团有限公司 | Iron and steel product surface treating agent and preparation method thereof |
| CN105506650A (en) * | 2016-01-14 | 2016-04-20 | 丁承日 | Metal oil and rust removal agent |
| CN105543825A (en) * | 2016-03-15 | 2016-05-04 | 上海应用技术学院 | Compound surfactant type passivator as well as preparation method and application thereof |
| CN106222641A (en) * | 2016-06-27 | 2016-12-14 | 无锡伊佩克科技有限公司 | Magnesium alloy chromium-free fluorine-free passivation Phosphating Solution and application thereof |
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| CN107164752A (en) * | 2017-05-09 | 2017-09-15 | 句容市博远电子有限公司 | A kind of environment-friendly phosphating solution and preparation method thereof |
| CN107723716A (en) * | 2017-10-17 | 2018-02-23 | 黄彬彬 | A kind of preparation method of rust remover |
| CN108070869A (en) * | 2017-11-30 | 2018-05-25 | 刘君宇 | A kind of nanometer of converting agent of iron rust and preparation method thereof |
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| CN104060259A (en) * | 2014-06-30 | 2014-09-24 | 句容市博远电子有限公司 | Environment-friendly phosphating solution and preparation method thereof |
| CN104164662A (en) * | 2014-07-30 | 2014-11-26 | 武汉钢铁(集团)公司 | Roller coating conversion treatment agent for colored coated steel plate |
| CN105039993A (en) * | 2015-07-21 | 2015-11-11 | 安徽江威精密制造有限公司 | Copper piece antirust agent and preparation method and application thereof |
| CN105256321A (en) * | 2015-10-30 | 2016-01-20 | 湖南金化科技集团有限公司 | Iron and steel product surface treating agent and preparation method thereof |
| CN105506650A (en) * | 2016-01-14 | 2016-04-20 | 丁承日 | Metal oil and rust removal agent |
| CN105543825A (en) * | 2016-03-15 | 2016-05-04 | 上海应用技术学院 | Compound surfactant type passivator as well as preparation method and application thereof |
| CN106222641A (en) * | 2016-06-27 | 2016-12-14 | 无锡伊佩克科技有限公司 | Magnesium alloy chromium-free fluorine-free passivation Phosphating Solution and application thereof |
| CN106282902A (en) * | 2016-08-29 | 2017-01-04 | 安徽省徽之尚机电科技有限公司 | A kind of iron and steel is without paint antirusting treating method |
| CN107164752A (en) * | 2017-05-09 | 2017-09-15 | 句容市博远电子有限公司 | A kind of environment-friendly phosphating solution and preparation method thereof |
| WO2018223440A1 (en) * | 2017-06-04 | 2018-12-13 | 深圳朝伟达科技有限公司 | Metal derusting and anti-rust sealing agent and preparation method thereof |
| CN111094614A (en) * | 2017-10-12 | 2020-05-01 | 安赛乐米塔尔公司 | Method for treating metal plate and metal plate treated by the method |
| CN111094614B (en) * | 2017-10-12 | 2021-12-03 | 安赛乐米塔尔公司 | Method for treating metal plate and metal plate treated by the method |
| US11319633B2 (en) | 2017-10-12 | 2022-05-03 | Arcelormittal | Metal sheet treatment method and metal sheet treated with this method |
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