CN103540919A - Cast iron surface anti-corrosion treatment agent and cast iron surface anti-corrosion treatment method - Google Patents
Cast iron surface anti-corrosion treatment agent and cast iron surface anti-corrosion treatment method Download PDFInfo
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- CN103540919A CN103540919A CN201310452958.XA CN201310452958A CN103540919A CN 103540919 A CN103540919 A CN 103540919A CN 201310452958 A CN201310452958 A CN 201310452958A CN 103540919 A CN103540919 A CN 103540919A
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- cast iron
- iron surface
- agent
- zirconium
- triethoxysilyl
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/20—Use of solutions containing silanes
Abstract
The invention relates to a cast iron surface anti-corrosion treatment agent and a cast iron surface anti-corrosion treatment method. The cast iron surface anti-corrosion treatment agent comprises titanium fluoride, zirconium nitrate, zirconium fluoride, amino silane, 1, 2-bi (triethoxy silicyl) ethane and di (triethoxy silicyl) hexane. The treatment agent also comprises 10-50ppm of free fluorine ions, and the performance factor (PF) value of the treatment agent is 3.2-4.5. A cast iron material is arranged at a cathode of an electroplating device, and electrolytic treatment is carried out on the cast iron material and the anti-corrosion treatment agent.
Description
Technical field
The invention belongs to field of metal surface treatment, specifically refer to a kind of processing of cast iron materials surface anticorrosion treatment agent and treatment process.
Background technology
In order to improve the erosion resistance of metallic surface, conventionally can use chromic salt process metal surfaces or use phosphatizing metallic surface.But environment and laborer's health is had to serious infringement adopting chromic salt or phosphoric acid salt to carry out waste water in metal finishing process etc., along with the enhancing of the world to the protection consciousness of environment, the strict restriction of now using chromic salt or phosphoric acid salt to be subject to.
Although phosphoric acid salt carries out in metal finishing process, injury to laborer is less, but rich phosphatization problem is serious in the waste water of postorder, and also inevitably use containing chromic salts in using phosphatic technique, therefore, existing many countries all to ban use of chromic salt or phosphoric acid salt be metal conditioner.
Now can substitute chromium hydrochlorate or phosphatic chromium-free metal surface treatment agent uses substantially is all zirconium metalloid surface treatment agent, titanium metalloid surface treatment agent or zirconium-titanium class surface treatment agent.This class treatment agent is generally to substitute phosphate radical with halogen, wherein particularly relatively the most fastening with the combination of matrix after the film process of fluorion in chromium-free metal surface treatment agent or film forming.
But, all chromate-free metal finishing or phosphoric acid salt metal finishing in existing technology, still cannot use together the effect ratio of chromic salt or phosphoric acid salt metal finishing, and aspect erosion resistance, also have difference, and the coating adhesion of postorder also there is gap.
Summary of the invention
The object of this invention is to provide a kind of Cast Iron Surface antiseptic treating agent, by this metal conditioner, can on pending matrix, form overlay film, the performance of this overlay film approaches substantially by chromic salt or phosphoric acid salt the treatment effect to metallic surface, and to the coating adhesion of postorder also larger raising.
The present invention is achieved by the following technical solutions:
An antiseptic treating agent, by titanium fluoride, zirconium nitrate, Zirconium tetrafluoride, aminosilane, 1,2-bis-(triethoxysilyl) ethane and two (triethoxysilyl) hexane form; Titanium fluoride, zirconium nitrate and Zirconium tetrafluoride convert and account for 110-140ppm or the 550-650ppm for the treatment of agent total amount with metallic element, wherein, titanium fluoride is 1:1-1:3 with the ratio of the metallic element atom of zirconium nitrate and Zirconium tetrafluoride, and the ratio of the metallic element atom of zirconium nitrate and Zirconium tetrafluoride is 2:5; Aminosilane and 1,2-bis-(triethoxysilyl) ethane and two (triethoxysilyl) hexane be take mol ratio as 17:3-9:1, wherein, 1,2-bis-(triethoxysilyl) ethane and two (triethoxysilyl) hexane be take mol ratio as 1:1; In described treatment agent, also include the free fluorine ion of 10-50ppm, and the PF value for the treatment of agent is 3.2-4.5.
Described aminosilane includes 3-TSL 8330, APTES, 3-aminopropyl methyldiethoxysilane, N-phenyl-3-TSL 8330, N-(2-amino-ethyl)-3-TSL 8330 or N-(2-amino-ethyl) one or more combinations of-APTES.
In described treatment agent, contain at least one being selected from calcium cpd, magnesium compound or strontium compound, wherein calcium cpd concentration is 30-50ppm, and the concentration of magnesium compound or strontium compound is 30-100ppm.
In described treatment agent, contain nitrate radical, 100-30000ppm.
In described Cast Iron Surface antiseptic treating agent, include water-soluble or water dispersible organic resin, in solid components and concentration 50-1000ppm.
In described metal conditioner, further include and be selected from nitric acid, sulfuric acid, phosphoric acid and their salt, it take solid components and concentration metering is 50-10000ppm.
A method for anticorrosion treatment, by cast iron materials be arranged at electroplanting device negative electrode and with antiseptic treating agent in carry out electrolysis treatment.
Casting material after electrolysis is positioned over 5-30 second in the acidic aqueous solution of compound of at least a kind of element that contains cobalt, nickel, tin, copper, titanium or zirconium.
Casting material after electrolysis is positioned over 5-30 second in the Cast Iron Surface antiseptic treating agent that includes water-soluble or water dispersible organic resin.
Casting material after electrolysis is positioned over 5-30 second in the Cast Iron Surface antiseptic treating agent that includes nonionic surface active agent and aniorfic surfactant.
The invention has the beneficial effects as follows:
Technical scheme of the present invention is by the usage ratio to titanium-containing compound and zirconium-containing compound, improved at the overlay film effect of pending metallic surface and the coating adhesion of rear operation, and pass through aminosilane and 1, the ratio of components of 2-bis-(triethoxysilyl) ethane and two (triethoxysilyl) hexane, has improved the corrosion resistance nature of overlay film.
Embodiment
Describe by the following examples technical scheme of the present invention in detail, should be understood that, following embodiment is only exemplary, only can be used for explaining and technical scheme of the present invention being described, and can not to be interpreted as is the restriction to technical solution of the present invention.
In the present invention, titaniferous compound and zirconium compound are for form the material of the chemical transformation overlay film that contains titanium and zirconium on metal material surface, although this two compounds belongs to common used material in metal finishing, but cannot reach best effect always, and, the composition of this two compounds or the difference of proportioning are all not identical in performance and the characteristic of the overlay film of metallic surface yet.In the present invention, what select is titanium fluoride, zirconium nitrate and three kinds of compounds of Zirconium tetrafluoride, titanium fluoride, zirconium nitrate and Zirconium tetrafluoride convert and account for 110-140ppm or the 550-650ppm for the treatment of agent total amount with metallic element, wherein, titanium fluoride is 1:1-1:3 with the ratio of the metallic element atom of zirconium nitrate and Zirconium tetrafluoride, and the ratio of the metallic element atom of zirconium nitrate and Zirconium tetrafluoride is 2:5.
In technical scheme of the present invention, when the ratio of titanium fluoride and the metallic element atom of zirconium nitrate and Zirconium tetrafluoride is 1:1, it is preferred version of the present invention that titanium fluoride, zirconium nitrate and Zirconium tetrafluoride be take the metallic element 550-650ppm that accounts for treatment agent total amount that converts; When the ratio of titanium fluoride and the metallic element atom of zirconium nitrate and Zirconium tetrafluoride is 1:3, it is preferred version of the present invention that titanium fluoride, zirconium nitrate and Zirconium tetrafluoride be take the metallic element 110-140ppm that accounts for treatment agent total amount that converts.
In the present invention, also include the free fluorine ion of 10-50ppm, and the PF value for the treatment of agent is 3.2-4.5.In treatment agent, adding free fluorine ion is in order to guarantee the stability for the treatment of agent, but the concentration of fluorion can not be too high, because when the excessive concentration of fluorion, although treatment agent stability improves, but separate out also, reduce, the plastic film mulching decreased on cast iron materials surface, weakens antiseptic property.
In treatment agent, also contain calcium cpd, magnesium compound and strontium compound, its Main Function is maintain fluorion stable.
In technical scheme of the present invention, aminosilane, 1,2-bis-(triethoxysilyl) ethane and two (triethoxysilyl) hexane generation condensation reaction, reactant in the overlay film of metallic surface for improving the erosion resistance of overlay film, and improve the tack that aftertreatment is filmed, its preparation method is for making aminosilane, 1, and 2-bis-(triethoxysilyl) ethane and two (triethoxysilyl) hexane are hydrolyzed and make in water, alcohol or acidic aqueous solution.
In technical scheme of the present invention, aminosilane includes 3-TSL 8330, APTES, 3-aminopropyl methyldiethoxysilane, N-phenyl-3-TSL 8330, N-(2-amino-ethyl)-3-TSL 8330 or N-(2-amino-ethyl) one or more combinations of-APTES.
Aminosilane and 1,2-bis-(triethoxysilyl) ethane and two (triethoxysilyl) hexane be take mol ratio as 17:3-9:1, wherein, 1,2-bis-(triethoxysilyl) ethane and two (triethoxysilyl) hexane be take mol ratio as 1:1.
At aminosilane of the present invention, 1, the final condenses solid components and concentration of 2-bis-(triethoxysilyl) ethane and two (triethoxysilyl) hexane accounts for the 220-280ppm for the treatment of agent total amount.
Method for anticorrosion treatment in the present invention is to be negative electrode electroplating processes by pending cast iron materials.Being about to cast iron materials connects and electroplates with electroplanting device negative electrode.
After plating, for improve treatment agent the wear resisting property of metallic surface and with the tack of filming, can add water-soluble or water dispersible organic resin, in the present invention, such as, epoxy resin, acrylic resin etc., wherein, the weathering resistance of epoxy resin is poor, does not select epoxy resin during to metal finishing for outdoor; The good weatherability of acrylic resin, and be applicable to low temperature, can be for extremely frigid zones, but the hardness of this resin is larger, and fragility is large, and time and overlay film thickness that when processing, the time is less than other resin also should reduce.When the resin using has acrylic resin, in solid composition, should not surpass 1000ppm, best with 50-300ppm.
In the present invention, nitrate radical mainly plays oxygenant effect, and can promote overlay film to separate out and improve the solvency action of calcium cpd, magnesium compound and strontium compound, to maintain the concentration stabilize of calcium cpd, magnesium compound and strontium compound.
In order to promote the formation of overlay film, improve the erosion resistance of overlay film, in treatment agent, can select nitric acid, sulfuric acid, phosphoric acid etc. and their salt, can also adjust on the one hand the pH value for the treatment of agent, the pH value of the treatment agent of this programme is optimum 3.2-4.5.
In order to improve the stability for the treatment of agent and the property separated out, can add tensio-active agent, mainly add anionic species tensio-active agent and/or nonionic class tensio-active agent.
A method for anticorrosion treatment, by cast iron materials be arranged at electroplanting device negative electrode and with antiseptic treating agent in carry out electrolysis treatment.
Casting material after electrolysis is positioned over 5-30 second in the acidic aqueous solution of compound of at least a kind of element that contains cobalt, nickel, tin, copper, titanium or zirconium.
Casting material after electrolysis is positioned over 5-30 second in the Cast Iron Surface antiseptic treating agent that includes water-soluble or water dispersible organic resin.
Casting material after electrolysis is positioned over 5-30 second in the Cast Iron Surface antiseptic treating agent that includes nonionic surface active agent and aniorfic surfactant.
In actual production, also the casting material after electrolysis can be positioned over successively in the acidic aqueous solution of compound of at least a kind of element that contains cobalt, nickel, tin, copper, titanium or zirconium, include in the Cast Iron Surface antiseptic treating agent of water-soluble or water dispersible organic resin, include in the Cast Iron Surface antiseptic treating agent of nonionic surface active agent and aniorfic surfactant.
Embodiment mono-
, by titanium fluoride, zirconium nitrate, Zirconium tetrafluoride, aminosilane, 1,2-bis-(triethoxysilyl) ethane and two (triethoxysilyl) hexane form; Titanium fluoride, zirconium nitrate and Zirconium tetrafluoride convert and account for the 110-140ppm for the treatment of agent total amount with metallic element, and wherein, titanium fluoride is 1:3 with the ratio of the metallic element atom of zirconium nitrate and Zirconium tetrafluoride, and the ratio of the metallic element atom of zirconium nitrate and Zirconium tetrafluoride is 2:5; Aminosilane and 1,2-bis-(triethoxysilyl) ethane and two (triethoxysilyl) hexane be take mol ratio as 17:3, wherein, 1,2-bis-(triethoxysilyl) ethane and two (triethoxysilyl) hexane be take mol ratio as 1:1; In described treatment agent, also include the free fluorine ion of 10-50ppm, and the PF value for the treatment of agent is 3.2-4.5.
Embodiment bis-
, by titanium fluoride, zirconium nitrate, Zirconium tetrafluoride, aminosilane, 1,2-bis-(triethoxysilyl) ethane and two (triethoxysilyl) hexane form; Titanium fluoride, zirconium nitrate and Zirconium tetrafluoride convert and account for the 550-650ppm for the treatment of agent total amount with metallic element, and wherein, titanium fluoride is 1:1 with the ratio of the metallic element atom of zirconium nitrate and Zirconium tetrafluoride, and the ratio of the metallic element atom of zirconium nitrate and Zirconium tetrafluoride is 2:5; Aminosilane and 1,2-bis-(triethoxysilyl) ethane and two (triethoxysilyl) hexane be take mol ratio as 9:1, wherein, 1,2-bis-(triethoxysilyl) ethane and two (triethoxysilyl) hexane be take mol ratio as 1:1; In described treatment agent, also include the free fluorine ion of 10-50ppm, and the PF value for the treatment of agent is 3.2-4.5.
Claims (10)
1. a Cast Iron Surface antiseptic treating agent, is characterized in that: by titanium fluoride, zirconium nitrate, Zirconium tetrafluoride, aminosilane, 1,2-bis-(triethoxysilyl) ethane and two (triethoxysilyl) hexane form; Titanium fluoride, zirconium nitrate and Zirconium tetrafluoride convert and account for 110-140ppm or the 550-650ppm for the treatment of agent total amount with metallic element, wherein, titanium fluoride is 1:1-1:3 with the ratio of the metallic element atom of zirconium nitrate and Zirconium tetrafluoride, and the ratio of the metallic element atom of zirconium nitrate and Zirconium tetrafluoride is 2:5; Aminosilane and 1,2-bis-(triethoxysilyl) ethane and two (triethoxysilyl) hexane be take mol ratio as 17:3-9:1, wherein, 1,2-bis-(triethoxysilyl) ethane and two (triethoxysilyl) hexane be take mol ratio as 1:1; In described treatment agent, also include the free fluorine ion of 10-50ppm, and the PF value for the treatment of agent is 3.2-4.5.
2. Cast Iron Surface antiseptic treating agent according to claim 1, it is characterized in that: in described treatment agent, contain at least one being selected from calcium cpd, magnesium compound or strontium compound, wherein calcium cpd concentration is 30-50ppm, and the concentration of magnesium compound or strontium compound is 30-100ppm.
3. Cast Iron Surface antiseptic treating agent according to claim 1 and 2, is characterized in that: in described treatment agent, contain nitrate radical, 100-30000ppm.
4. Cast Iron Surface antiseptic treating agent according to claim 1 and 2, is characterized in that: described treatment agent includes water-soluble or water dispersible organic resin, in solid components and concentration 50-1000ppm.
5. Cast Iron Surface antiseptic treating agent according to claim 1 and 2, is characterized in that: in described treatment agent, further include and be selected from nitric acid, sulfuric acid, phosphoric acid and their salt, it take the metering of solid components and concentration is 50-10000ppm.
6. Cast Iron Surface antiseptic treating agent according to claim 1 and 2, is characterized in that: described treatment agent includes tensio-active agent, mainly adds anionic species tensio-active agent and/or nonionic class tensio-active agent.
7. a Cast Iron Surface method for anticorrosion treatment, is characterized in that: by cast iron materials be arranged at electroplanting device negative electrode and with antiseptic treating agent in carry out electrolysis treatment.
8. Cast Iron Surface method for anticorrosion treatment according to claim 7, is characterized in that: the casting material after electrolysis is positioned over 5-30 second in the acidic aqueous solution of compound of at least a kind of element that contains cobalt, nickel, tin, copper, titanium or zirconium.
9. Cast Iron Surface method for anticorrosion treatment according to claim 7, is characterized in that: the casting material after electrolysis is positioned over 5-30 second in the Cast Iron Surface antiseptic treating agent that includes water-soluble or water dispersible organic resin.
10. Cast Iron Surface method for anticorrosion treatment according to claim 7, is characterized in that: the casting material after electrolysis is positioned over 5-30 second in the Cast Iron Surface antiseptic treating agent that includes nonionic surface active agent and aniorfic surfactant.
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| CN201310452958.XA CN103540919A (en) | 2013-09-27 | 2013-09-27 | Cast iron surface anti-corrosion treatment agent and cast iron surface anti-corrosion treatment method |
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| CN201310452958.XA CN103540919A (en) | 2013-09-27 | 2013-09-27 | Cast iron surface anti-corrosion treatment agent and cast iron surface anti-corrosion treatment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526250A (en) * | 2013-09-27 | 2014-01-22 | 宁波金恒机械制造有限公司 | Cast iron surface treatment agent and treatment method |
| CN103540918A (en) * | 2013-09-27 | 2014-01-29 | 宁波金恒机械制造有限公司 | Cast iron surface anti-corrosion treatment agent |
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| CN103526250A (en) * | 2013-09-27 | 2014-01-22 | 宁波金恒机械制造有限公司 | Cast iron surface treatment agent and treatment method |
| CN103540918A (en) * | 2013-09-27 | 2014-01-29 | 宁波金恒机械制造有限公司 | Cast iron surface anti-corrosion treatment agent |
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| CN1516751A (en) * | 2001-06-15 | 2004-07-28 | �ձ�������ʽ���� | Treating solution for metal surface treatment and surface treatment method |
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| JP2008088553A (en) * | 2006-09-08 | 2008-04-17 | Nippon Paint Co Ltd | Method of treating surface of metal base, metallic material treated by the surface treatment method, and method of coating the metallic material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103526250A (en) * | 2013-09-27 | 2014-01-22 | 宁波金恒机械制造有限公司 | Cast iron surface treatment agent and treatment method |
| CN103540918A (en) * | 2013-09-27 | 2014-01-29 | 宁波金恒机械制造有限公司 | Cast iron surface anti-corrosion treatment agent |
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Application publication date: 20140129 |