CN101418446A - A kind of environment-friendly type multifunctional steel surface processing agent - Google Patents
A kind of environment-friendly type multifunctional steel surface processing agent Download PDFInfo
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- CN101418446A CN101418446A CNA2007101958605A CN200710195860A CN101418446A CN 101418446 A CN101418446 A CN 101418446A CN A2007101958605 A CNA2007101958605 A CN A2007101958605A CN 200710195860 A CN200710195860 A CN 200710195860A CN 101418446 A CN101418446 A CN 101418446A
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Abstract
The invention discloses a kind of " four unifications " multi-functional environment-protection iron and steel treatment agent and construction technology thereof that integrates rust cleaning, oil removing, phosphatization and passivation.The weight proportion of this treatment agent is as follows: strong phosphoric acid (85%) content 20-25%; Primary zinc phosphate: 2-5%; Citric acid: 2-5%; Single nickel salt: 1-5%; Tensio-active agent: 0.5-3%; Sodium polyphosphate: 2-4%; Ammonium molybdate: 1-3%; Zinc nitrate: 2-3%; Deionized water: add to 100%.The surface treatment agent rust cleaning that the present invention produces, strong, nontoxic, harmless, the no organic volatile of the ability that descales, not skin irritation, three-waste free discharge, operating procedure simply, the saving of labor, save time, water-saving, reduce discharging energy-conservationly, be a kind of novel environmentfriendly products.
Description
The present invention relates to a kind of steel surface treatment technology, specifically a kind of multifunction environment-protection type surface treatment agent.
As everyone knows, in iron and steel, metal processing, shipbuilding, building and automobile etc. relate to the enterprise of iron and steel, all to use treating liquid for surface of iron or steel (cream, powder) to steel surface eliminate rust, oil removing and passivation technology, traditional steel surface rust cleaning, oil removing and passivation are to adopt strong acid rust cleaning, soap oil removing, sexavalence chromic salts passivation such as potassium bichromate, and be simple function, this method treatment process is long, waste a large amount of water rinses, skin to the people has pungency, the three waste discharge difficulty.To the eighties in 20th century, this is that one of steel surface treatment technology improves greatly phosphorization technology to have occurred.As " low temperature phosphor ", " middle temperature phosphating ", " cold phosphating liquid " etc., collection rust cleaning, oil removing, phosphatization and passivation " four unifications " phosphatization liquid has appearred again in addition.The phosphatization liquid of the external phosphatization liquid such as the RDP product of the U.S., Henkel KGaA company, the phosphatization liquid of Japanese Sharp company are in stock on Chinese market, and all there is the multifunctional type phosphatization liquid that uses for oneself in domestic each large enterprises.Technology that we can say these phosphatization liquid is imperfection all, especially can not adapt to current society to environmental protection and requirements of saving energy, specifically: liquid itself just has irritating smell, all contains poisonous raw material such as chromic salt, nitrite etc.; Simultaneously the phosphatization working condition requirement is heated, " four unifications " by name of these products but actual still proceed step by step work, pickling-cleaning-phosphatization; More than the function one, product performance just a little less than, when rust cleaning, can only finish rust cleaning with infusion method, spraying process commonly used, squeegee process DeGrain.
Publication number has been the CN1916236 patent disclosure a kind of " new type environmental protective metal treatment solution and treatment process ", and the composition of wherein filling a prescription contains Sodium Nitrite and treatment temp is 40-60 ℃, can't be called real environmental protection and energy saving product.The patent No. is that the phosphatization liquid described in ZL92102593 and 88105272 all contains objectionable impuritiess such as nitrite, and a large amount of sediments are arranged in the liquid, and etching apparatus soon when being heated by phosphatization equipment will discharge a large amount of waste liquids simultaneously, and antirust ability is poor.
The invention provides " four unifications " steel surface processing agent that a kind of environmental protection and energy saving integrate rust cleaning, oil removing, phosphatization, passivation.The raw material that this treatment agent adopts does not contain hazardous and noxious substances such as potassium bichromate, nitrite, fluorochemical, hydrogen peroxide and formaldehyde, has accomplished nontoxic, tasteless, nonirritant, no organic volatile (VOC); Four step functions are once finished; This treatment solution Working environment is that normal temperature does not need heating; Working method not only can also can be removed with squeegee process and spraying process with infusion method and heavily become rusty and descale.Iron and steel parts after treatment, the phosphatize phosphate coat compact crystallization, shock-resistant, reach one-level with iron and steel basic unit and finish paint conjugation, therefore can be used as priming paint, directly can handle brushing finish paint on the workpiece.Treatment process is simple, conserves water, and saves time and saves the labor force; Solution can use repeatedly, because sediment does not need discharging less.
For achieving the above object, the technical solution used in the present invention, the each component proportioning is as follows:
Phosphoric acid (concentration 85%) 20-25% (weight ratio);
Primary zinc phosphate 2-5%;
Citric acid 2-5%;
Oxalic acid 2-4%;
Single nickel salt 1-5%;
Sodium polyphosphate 2-4%;
Tensio-active agent 0.5-3%;
Ammonium molybdate 1-3%;
Zinc nitrate or zinc oxide 2-3%;
Deionized water is added to 100%.
The principle of above-mentioned component is: phosphoric acid is a kind of acid of medium tenacity, and example hydrochloric acid, sulfuric acid and nitric acid are not strong, but not only can eliminate rust but also be the phosphatization main raw material; Unite use with oxalic acid and citric acid, can improve total acidity and free acidity, this is for the rust cleaning and the effect that descaled; Primary zinc phosphate and single nickel salt are the main raw materials of phosphatization; Sodium polyphosphate (tripoly phosphate sodium STPP), ammonium molybdate play filming function and passivation; Zinc nitrate or zinc oxide or zinc sulfate play a driving role; Citric acid not only strengthens acidity also has pair iron ion to play complexing action.
Said tensio-active agent can be OP-10, alkyl sodium sulfonate, Sodium dodecylbenzene sulfonate or sodium lauryl sulphate etc., and they play inhibitor effect, permeate agent effect and oil removing effect.Data is introduced: polyphosphoric acid salt can produce hard iron phosphate membrane with the steel substrate surface by depolymerization formation ortho-phosphoric acid root in acidic medium, thus the passivation of playing, and Here it is no longer uses the theoretical foundation of dichromate as passivation.
Said single nickel salt can be a nickelous nitrate also, contains six or seven crystal water can use no matter be.
" four unification " multifunctional steel surface processing agent working method as embodiments of the invention 1, preparation 100kg is as follows: at capacity is that (the anti-corrosion system of plastics) added the accurately phosphoric acid 20kg of weighing in the normal-temperature reaction jar that has 38-56 rev/mins of electric mixers of 260L, add the 10kg deionized water, start stirring, with 5kg primary zinc phosphate 3kg deionized water, the furnishing pasty state is slowly poured in the phosphoric acid solution while stirring and is gone in the plastic tank of 10kg capacity; (anticorrosion) will weigh up citric acid 3kg in the charged stirred tank of another 10L, and oxalic acid 2kg mixing is dissolved with the 5kg deionized water, and insoluble having no relations of oxalic acid just is suspended in the water; In the plastic tank of 10kg capacity, add the single nickel salt 1kg sodium polyphosphate 2kg that has weighed up, use the 5kg deionized water dissolving; Add the ammonium molybdate 0.5kg that has weighed up in the 5kg plastic tank, zinc nitrate 2kg goes dried up dissolving with 2kg; In the plastic tank of 10kg capacity, claim 3kgOP-10 to add 5kg and go that dried up constantly to be stirred to off-bottom stand-by.
With phosphoric acid solubilizing reaction jar is main jar, add successively while stirring above-mentioned in plastic tank the dissolved raw material, be successively: primary zinc phosphate, citric acid+oxalic acid, single nickel salt+sodium polyphosphate, ammonium molybdate+zinc nitrate, add OP-10 at last, add while stirring up to adding, use 10kg water, all in the impouring phosphoric acid jars towards all containers, remaining 21.5kg deionized water is all poured in the phosphatase reaction jar, stir reaction in two hours and all finish, filter, promptly obtain finished product 100kg.
The multifunctional steel surface processing agent of example 2 preparation 100kg, auxilliary portion combination except that phosphoric acid and primary zinc phosphate is called masterbatch, 1) preparation 300kg masterbatch earlier: in the corrosion resistant retort of 400L, (be with electronic agitator) and add citric acid 20kg, oxalic acid 20kg, sodium polyphosphate 30kg, single nickel salt 10kg, zinc oxide 20kg, ammonium molybdate 5kg to add deionized water 195kg and stir energetically and obtain masterbatch 300kg.
Add phosphoric acid 25kg in the corrosion-resistant retort of 200L (with 78 rev/mins electric mixer), primary zinc phosphate 3kg adds and removes dried up 30kg, stirs energetically, up to whole dissolvings.
3kgOP-10 dissolved in the 5kg deionized water constantly to stir be integral up to off-bottom and water.
Get 1/10th of above-mentioned masterbatch and join in the phosphatase reaction jar, OP-10 adds simultaneously, and amount of makeup water 4kg stirred two hours energetically, filters to obtain finished product 100kg.Other masterbatch is stand-by.
The steel surface processing agent technical indicator of manufacturing with the present invention is as follows:
1) outward appearance light green transparent liquid;
2) viscosity 〉=10;
3) the pH value 0.8-1.2;
4) density 1.2-1.3;
5) free acid 250-300 (point);
6) total acidity 600-750 (point);
7) sticking power is 1 grade;
8) rust cleaning rate is more than 99%;
9) oil removing ability moisture film is continuous, does not break;
10) shock-resistance 50kg/cm;
11) oil-proofness (10# machine oil) 24h is non-foaming, wrinkle resistant;
12) anti-gasoline (93# gasoline) 4h is non-foaming, wrinkle resistant;
13) resistance to salt water (3%NaCl 24h) non-corroding.
Reference standard is GB/T12612-2005 " a multifunctional treating liquid for surface of iron or steel general technical specifications ".This product and external product contrast see the following form:
| Physicochemical property | Henkel KGaA phosphatization liquid | Japanese Sharp phosphatization liquid | U.S. RDP phosphatization liquid | Treatment agent of the present invention |
| The pH value | 2.0～2.5 | 0.9～1.5 | 0.8～1.2 | 0.8～1.2 |
| The rust cleaning ability | 50 degree 10-20min can remove light rust | Do not have | Room temperature is removed light rust 10min, and 50 degree remove the 40min that heavily becomes rusty | Room temperature is removed light rust 5-10min, and 35 degree remove heavily rust, oxide skin 20min |
| The oil removing ability | Do not have | Do not have | Light oil fat | Light oil fat |
| Phosphatize phosphate coat thickness | 10—20μm | 10—20μm | 10—20μm | 2—29μm |
| Impact resistance | >30kg/cm | >30kg/cm | >35kg/cm | ≥50kg/cm |
| Sticking power | 2 grades | 2 grades | 2 grades | 1 grade |
| Rust-proof life (humidity 70%, room temperature) | 5 days | 5 days | 5 days | 360 days |
| Anti-corrosion capability (25 ℃ of 3%NaCl solution) | 1h takes out to dry up not have and returns rust | 1h takes out to dry up not have and returns rust | 1h takes out to dry up not have and returns rust | 24h takes out to dry up not have and returns rust |
| Outward appearance and sense organ | Transparent, irritating smell is arranged | Green transparent has irritating smell | Water white transparency has irritating smell | Light green is transparent to have no irritating odor |
Steel surface processing agent of the present invention can be at normal temperatures, soaks, spray, brushing, and the steel part of unlike material different thickness all is suitable for.
Below be the technical process of the present invention and traditional rust cleaning, oil removing, phosphatization, passivation:
1) operational path of the present invention is: cleaning; Degreasing, rust cleaning, phosphatization, passivation; Dry; Topcoating, plastic-blasting, zinc-plated, plating, application.
2) the traditional process of surface treatment route of iron and steel parts before application is: the cleaning workpiece; Pre-washing 2 minutes, 60 ℃; Oil removing 2 minutes, 60 ℃; Hot water wash 2 minutes, 70～80 ℃; Cold wash 2 minutes; Pickling 1～15 minute, 40～60 ℃; Clear water was washed 2 minutes; In and 2 minutes, 60 ℃; Cleaned 60 ℃ 2 minutes; Phosphatization 15 minutes, 80～90 ℃; Cleaned 2 minutes; Passivation 10 minutes, 50～70 ℃; Clear water was washed 2 minutes; Aftertreatment; Dry; Spray base; Dry; Application.
Handle steel part saving of labor, water-saving, save time with the present invention as can be seen.Greatly save the labor force and alleviated labour intensity; It is a kind of energy saving and environment friendly product.
The present invention successfully is applied to: Hubei morning twilight petrochemical equipment company, mechanical industry company of space flight group, the Hubei safe laser of crowd company limited etc. get a good review.
Claims (4)
1, a kind of multifunctional steel surface processing agent that integrates rust cleaning, oil removing, phosphatization and passivation, its feature
Be: proportioning raw materials of the present invention is:
85% strong phosphoric acid 20-25% (by weight);
Primary zinc phosphate 2-5%;
Citric acid 2-5%;
Oxalic acid 2-4%;
Single nickel salt 1-5%;
Sodium polyphosphate 2-4%;
Tensio-active agent 0.5-3%;
Ammonium molybdate 1-3%;
Zinc nitrate or zinc oxide 2-3%;
Deionized water dosage to 100%.
2, according to claim 1, it is characterized in that: said tensio-active agent can be OP-10, also can be alkyl sodium sulfonate, sodium alkyl benzene sulfonate, sodium lauryl sulphate etc.
3, according to claim 1, said single nickel salt can be a nickelous nitrate, can be with 6 or 7 crystal water.
4, according to claim 1, said zinc nitrate can be zinc sulfate or zinc oxide.
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| CNB2007101958605A CN100567573C (en) | 2007-12-03 | 2007-12-03 | A kind of environment-friendly type multifunctional steel surface processing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101958605A CN100567573C (en) | 2007-12-03 | 2007-12-03 | A kind of environment-friendly type multifunctional steel surface processing agent |
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| CN101418446A true CN101418446A (en) | 2009-04-29 |
| CN100567573C CN100567573C (en) | 2009-12-09 |
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| CN101805896A (en) * | 2010-03-31 | 2010-08-18 | 南车戚墅堰机车车辆工艺研究所有限公司 | Casting surface treatment agent and preparation method thereof |
| CN101949018A (en) * | 2010-08-10 | 2011-01-19 | 常州人和地义新材料科技有限公司 | Multi-functional metal surface pretreatment solution and preparation method thereof |
| CN101982564A (en) * | 2010-09-25 | 2011-03-02 | 王志刚 | Rust-removing and anti-rusting agent for iron and steel |
| CN101544888B (en) * | 2009-04-29 | 2012-07-25 | 布柯玛蓄能器（天津）有限公司 | Antioxidant for hot rolling |
| CN102839365A (en) * | 2012-04-11 | 2012-12-26 | 王晓翌 | Environmental-friendly type multifunctional steel surface treating fluid |
| CN102925883A (en) * | 2012-11-29 | 2013-02-13 | 郭衡怀 | Multifunctional metal surface treatment solution |
| CN103103515A (en) * | 2013-02-28 | 2013-05-15 | 杨东佑 | Stainless steel passivation parting agent preparation method thereof |
| CN104357858A (en) * | 2014-10-27 | 2015-02-18 | 李莹 | Steel surface treating agent and preparation method thereof |
| CN104498927A (en) * | 2014-12-15 | 2015-04-08 | 中国钢研科技集团有限公司 | Normal-temperature phosphating solution |
| 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 |
| CN105968719A (en) * | 2016-05-31 | 2016-09-28 | 安徽开林新材料股份有限公司 | Preparation process of steel surface water-based treatment agent universal carrier |
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| CN108624876A (en) * | 2018-05-11 | 2018-10-09 | 中山市汇宏环保科技有限公司 | A kind of environment protection type multifunctional inorganic agent and preparation method thereof |
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2007
- 2007-12-03 CN CNB2007101958605A patent/CN100567573C/en not_active Expired - Fee Related
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| CN101805896B (en) * | 2010-03-31 | 2011-11-02 | 南车戚墅堰机车车辆工艺研究所有限公司 | Casting surface treatment agent and preparation method thereof |
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| CN101949018A (en) * | 2010-08-10 | 2011-01-19 | 常州人和地义新材料科技有限公司 | Multi-functional metal surface pretreatment solution and preparation method thereof |
| CN101982564A (en) * | 2010-09-25 | 2011-03-02 | 王志刚 | Rust-removing and anti-rusting agent for iron and steel |
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| CN102925883A (en) * | 2012-11-29 | 2013-02-13 | 郭衡怀 | Multifunctional metal surface treatment solution |
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| CN108624876A (en) * | 2018-05-11 | 2018-10-09 | 中山市汇宏环保科技有限公司 | A kind of environment protection type multifunctional inorganic agent and preparation method thereof |
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| CN110628248A (en) * | 2019-09-30 | 2019-12-31 | 中国科学院过程工程研究所 | Steel surface self-reaction protective coating and application thereof |
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| CN113846320A (en) * | 2021-10-27 | 2021-12-28 | 西安热工研究院有限公司 | Four-in-one phosphating solution and preparation method thereof |
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