CN102794257B - Water-based paint coating process for stainless steel rail wagon - Google Patents
Water-based paint coating process for stainless steel rail wagon Download PDFInfo
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- CN102794257B CN102794257B CN201210290891.XA CN201210290891A CN102794257B CN 102794257 B CN102794257 B CN 102794257B CN 201210290891 A CN201210290891 A CN 201210290891A CN 102794257 B CN102794257 B CN 102794257B
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Abstract
The invention discloses a water-based paint coating process for a stainless steel rail wagon, and mainly solves the shortages that the conventional water-based paint is unfirm to attach onto the surface of a stainless steel substrate and poor in appearance quality. The water-based paint coating process comprises the steps as follows: firstly, cleaning the surface of a stainless steel wagon body to remove oil stains and dust on the surface; secondly, spraying a phosphide priming paint buffer coat onto the surface of the stainless steel wagon body; thirdly, drying in a natural environment or an oven, enabling the phosphide priming paint buffer coat to form a dry film with a thickness of 5-30 microns; and lastly, spraying a water-based paint onto the phosphide priming paint buffer coat, so that the process of coating the surface of the stainless steel wagon body is finished. According to the water-based paint coating process, one phosphide priming paint buffer coat without chromium is arranged between the water-based paint and the stainless steel substrate, so that the adhesive force of the water-based paint is increased, the problems of spots, color difference and the like due to influence of the substrate surface treatment on the water-based paint are effectively solved, the protection and environment-friendly performance of the water-based paint can be greatly improved, and the appearance quality of the coat in the spraying construction can be guaranteed.
Description
Technical field
The present invention relates to railway freight-car external coating technique, refer to particularly a kind of stainless steel railway freight-car water paint coating process.
Background technology
At present, stainless steel railway freight-car has been widely used in domestic arterial railway supply line, for example, for expanding on Dalian-Qinhuangdao Railway C80B type stainless steel open-top car along the line, become the main body of Coal Transport.In order to extend the life cycle of stainless steel railway freight-car, paint spraying need to be used in its stainless steel position.Traditional coating process is such: after car load steel construction assembling completion, stainless steel surfaces is cleaned, to remove surperficial dust and greasy dirt, then directly apply solvent based coating.Because the adhesive force of solvent based coating is relatively better, and high to the tolerance of surface of bottom material cleannes, while therefore using solvent based coating on stainless steel railway freight-car, its adhesion problem is not very outstanding.
Along with the develop rapidly of railway transportation cause, the delivery task that stainless steel railway freight-car is born is also more and more heavier, and its vehicle is also progressively to heavy duty, environmental protection, attractive in appearance, long-life future development.For this reason, newly-designed stainless steel railway freight-car requires to adopt the water paint of environment-friendly type mostly.But for smooth stainless steel surfaces, use water paint can have the poor problem of coating adhesion, cause coating quality variation.By ball blast or blasting treatment, can increase the roughness of stainless steel surfaces, and then the adhesive force of raising coating, but surface of bottom material is not easy to process thoroughly, and the defects such as spot, aberration easily appear in coating, have had a strong impact on adhesive force and the barrier propterty of subsequent technique floating coat.How to guarantee presentation quality and the service life of water-borne coating on stainless steel railway freight-car, be that railway scientific research personnel attempts the technical barrier solving always.
Summary of the invention
Object of the present invention will provide a kind of stainless steel railway freight-car water paint coating process exactly, and it can effectively improve water paint at the adhesive force of stainless steel surfaces, guarantees that water-borne coating presentation quality is good.
For achieving the above object, the stainless steel railway freight-car water paint coating process that the present invention is designed, comprises the steps:
1) production technology standard is cleaned stainless steel car body surface routinely, removes greasy dirt and dust on it;
2) adopt the method for airless spraying or aerial spraying at one metal conditioner tie coat of stainless steel car body surface spraying;
3) after metal conditioner spraying, be dried or dry in baking oven in natural environment, making metal conditioner tie coat form thickness is the dry film of 5 ~ 30 μ m;
4) water paint coating process standard sprays water paint on metal conditioner tie coat routinely again, can complete the application of stainless steel car body surface.
As preferred version, said step 2) in, in described metal conditioner, the percentage by weight of each component is: polyvinyl butyral resin 14.5 ~ 17.0%, thermosetting phenolic resin 6.0 ~ 8.5%, aluminium triphosphate 2.5 ~ 4.0%, trbasic zinc phosphate 2.0 ~ 3.0%, iron oxide red 11.0 ~ 13.0%, talcum powder 1.0 ~ 2.0%, phosphatase 11 .0 ~ 2.5%, surplus is organic solvent.
Further, in described metal conditioner, the percentage by weight of each component is: polyvinyl butyral resin 15.1%, thermosetting phenolic resin 6.7%, aluminium triphosphate 3.2%, trbasic zinc phosphate 2.5%, iron oxide red 12.0%, talcum powder 1.5%, phosphatase 11 .7%, surplus is organic solvent.
Further, in said step 3), after the spraying of described metal conditioner in natural environment dry 30 ~ 90min or dry 5 ~ 15min in temperature is the baking oven of 45 ~ 65 ℃, making metal conditioner tie coat form thickness is the dry film of 8 ~ 25 μ m.
Again further, after the spraying of described metal conditioner in natural environment dry 50 ~ 70min or dry 10 ~ 12min in temperature is the baking oven of 50 ~ 60 ℃, making metal conditioner tie coat form thickness is the dry film of 10 ~ 20 μ m.
The design main points of coating process of the present invention be at water paint, increased with between stainless steel ground together with metal conditioner tie coat, in metal conditioner, the mechanism of action of each component is as follows:
Polyvinyl butyral resin is the main film-forming resin of tie coat, plays bonding pigment, applies adhesive force in tie coat.This resin strong adhesion, good toughness, have good heat-resisting, fast light and oil resistance.The effect of thermosetting phenolic resin is to mix with polyvinyl butyral resin, the corrosion resistance of enhanced polyethylene butyral resin.
Aluminium triphosphate, trbasic zinc phosphate be as chemical anti-rust pigment, and its mechanism of action is the Fe with stainless steel metal surface
2+form the complex compound sediment layer of adhesion-tight, simultaneously with coating in hydroxyl, carboxyl coordination, produce stable crosslinked complex, thereby make to form between pigment-coating-ground stable chemical constitution, and then significantly strengthen adhesive force and the anti-permeability performance of coating.
Iron oxide red mainly plays pigmentation, and plays certain physics rust inhibition.Talcum powder is as a kind of filler, and Main Function is the shield effectiveness that improves coating, and then improves the levelability of coating.
The Main Function of phosphoric acid is to generate phosphating coat with metal reaction, and phosphating coat has good passivation to stainless steel metal surface, and because phosphating coat surface is comparatively coarse, can significantly strengthen the adhesive force of follow-up water-borne coating.
Organic solvent mainly plays dissolve polyvinyl alcohol butyral resin, thermosetting phenolic resin, make coating there is good workability, thereby the fine and close dry film that forms one deck 5 ~ 30 μ m on stainless steel car body surface, can adopt one or several known organic solvent assembly.
In above-mentioned metal conditioner, each component synergy, can form extremely strong adhesive force at the smooth surface of the metals such as aluminium, copper, cadmium, nickel.
The invention has the advantages that: metal conditioner is sprayed to behind stainless steel car body surface, wherein each component with stainless steel surfaces generation chemical reaction, smooth stainless steel surfaces is converted into the phosphating coat that layer of surface is coarse, i.e. metal conditioner tie coat.Because this tie coat and stainless steel ground have extremely strong adhesive force, and coating surface is coarse, and after water paint applies in the above, adhesive force will significantly improve.Simultaneously, metal conditioner tie coat surface wants high a lot of compared with stainless steel surface of bottom material cleannes, water paint is no longer subject to surface of bottom material to process the impact of cleannes after applying, presentation quality after spraying will obtain strong guarantee, thereby extend application cycle, minimizing workman's maintenance and repair time of stainless steel railway freight-car, save vehicle operating cost.In addition, metal conditioner tie coat adopts the formula that does not contain chromium to form, and its safety and environmental protection is nontoxic to operating personnel, extremely meets the needs of modern railways transport undertaking development.
The specific embodiment
Below in conjunction with specific embodiment, stainless steel railway freight-car water paint coating process of the present invention is described in further detail.
Embodiment 1
1) pre-cleaning before application: production technology standard is cleaned stainless steel car body surface routinely, removes greasy dirt and dust on it.
2) allotment metal conditioner: be polyvinyl butyral resin 15.1kg, thermosetting phenolic resin 6.7kg, aluminium triphosphate 3.2kg, trbasic zinc phosphate 2.5kg, iron oxide red 12.0kg, talcum powder 1.5kg, phosphatase 11 .7kg, butanols 34.0kg, ethanol 11.0kg, dimethylbenzene 12.3kg by weight percentage, mixing and stirring.
3) metal conditioner spraying: adopt the method for airless spraying at one metal conditioner tie coat of stainless steel car body surface spraying, then in temperature is the baking oven of 50 ~ 60 ℃, dry 10min, making metal conditioner tie coat form thickness is the dry film of 10 ~ 20 μ m.
4) water paint application: water paint coating process standard sprays water paint on metal conditioner tie coat routinely, can complete the application of stainless steel car body surface.
Embodiment 2
1) pre-cleaning before application: production technology standard is cleaned stainless steel car body surface routinely, removes greasy dirt and dust on it.
2) allotment metal conditioner: by weight percentage for getting polyvinyl butyral resin 14.5kg, thermosetting phenolic resin 8.0kg, aluminium triphosphate 3.0kg, trbasic zinc phosphate 2.0kg, iron oxide red 11.0kg, talcum powder 2.0kg, phosphoric acid 2.0kg, butanols 34.1kg, ethanol 11.0kg, dimethylbenzene 12.4kg, mixing and stirring.
3) metal conditioner spraying: adopt the method for pressure-air spraying at one metal conditioner tie coat of stainless steel car body surface spraying, be then dried 60min in natural environment, making metal conditioner tie coat form thickness is the dry film of 10 ~ 15 μ m.
4) water paint application: water paint coating process standard sprays water paint on metal conditioner tie coat routinely, can complete the application of stainless steel car body surface.
Embodiment 3
1) pre-cleaning before application: production technology standard is cleaned stainless steel car body surface routinely, removes greasy dirt and dust on it.
2) allotment metal conditioner: by weight percentage for getting polyvinyl butyral resin 17.0kg, thermosetting phenolic resin 6.0kg, aluminium triphosphate 4.0kg, trbasic zinc phosphate 3.0kg, iron oxide red 13.0kg, talcum powder 1.0kg, phosphatase 11 .2kg, butanols 32.6kg, ethanol 10.0kg, dimethylbenzene 12.2kg, mixing and stirring.
3) metal conditioner spraying: adopt the method for airless spraying at one metal conditioner tie coat of stainless steel car body surface spraying, then in temperature is the baking oven of 45 ~ 60 ℃, dry 15min, making metal conditioner tie coat form thickness is the dry film of 8 ~ 15 μ m.
4) water paint application: water paint coating process standard sprays water paint on metal conditioner tie coat routinely, can complete the application of stainless steel car body surface.
Embodiment 4
1) pre-cleaning before application: production technology standard is cleaned stainless steel car body surface routinely, removes greasy dirt and dust on it.
2) allotment metal conditioner: by weight percentage for getting polyvinyl butyral resin 15.5kg, thermosetting phenolic resin 8.5kg, aluminium triphosphate 2.5kg, trbasic zinc phosphate 2.0kg, iron oxide red 12.0kg, talcum powder 1.5kg, phosphoric acid 2.2kg, butanols 33.1kg, ethanol 10.3kg, dimethylbenzene 12.4kg, mixing and stirring.
3) metal conditioner spraying: adopt the method for pressure-air spraying at one metal conditioner tie coat of stainless steel car body surface spraying, be then dried 70min in natural environment, making metal conditioner tie coat form thickness is the dry film of 15 ~ 25 μ m.
4) water paint application: water paint coating process standard sprays water paint on metal conditioner tie coat routinely, can complete the application of stainless steel car body surface.
Claims (3)
1. a stainless steel railway freight-car water paint coating process, is characterized in that: this technique comprises the steps:
1) production technology standard is cleaned stainless steel car body surface routinely, removes greasy dirt and dust on it;
2) adopt the method for airless spraying or aerial spraying at one metal conditioner tie coat of stainless steel car body surface spraying, in described metal conditioner, the percentage by weight of each component is: polyvinyl butyral resin 14.5～17.0%, thermosetting phenolic resin 6.0～8.5%, aluminium triphosphate 2.5～4.0%, trbasic zinc phosphate 2.0～3.0%, iron oxide red 11.0～13.0%, talcum powder 1.0～2.0%, phosphatase 11 .0～2.5%, surplus is organic solvent;
3) after metal conditioner spraying, in natural environment, be dried or dry in baking oven, wherein: be 30～90min the drying time in natural environment, the temperature of drying in baking oven is that 45～65 ℃, time are 5～15min, and making metal conditioner tie coat form thickness is the dry film of 8～25 μ m;
4) water paint coating process standard sprays water paint on metal conditioner tie coat routinely again, can complete the application of stainless steel car body surface.
2. stainless steel railway freight-car water paint coating process according to claim 1, it is characterized in that: said step 2), in described metal conditioner, the percentage by weight of each component is: polyvinyl butyral resin 15.1%, thermosetting phenolic resin 6.7%, aluminium triphosphate 3.2%, trbasic zinc phosphate 2.5%, iron oxide red 12.0%, talcum powder 1.5%, phosphatase 11 .7%, surplus is organic solvent.
3. stainless steel railway freight-car water paint coating process according to claim 1 and 2, it is characterized in that: said step 3), after the spraying of described metal conditioner in natural environment dry 50～70min or dry 10～12min in temperature is the baking oven of 50～60 ℃, making metal conditioner tie coat form thickness is the dry film of 10～20 μ m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210290891.XA CN102794257B (en) | 2012-08-16 | 2012-08-16 | Water-based paint coating process for stainless steel rail wagon |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210290891.XA CN102794257B (en) | 2012-08-16 | 2012-08-16 | Water-based paint coating process for stainless steel rail wagon |
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| CN102794257A CN102794257A (en) | 2012-11-28 |
| CN102794257B true CN102794257B (en) | 2014-08-27 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103666138A (en) * | 2013-11-29 | 2014-03-26 | 江苏太平洋液压机械制造有限公司 | Modified phenolic anti-rust paint |
| CN104289406B (en) * | 2014-10-27 | 2016-07-06 | 山西华豹涂料有限公司 | The technique of railway freight-car application aqueous anticorrosion paint |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569986A (en) * | 2003-07-21 | 2005-01-26 | 深圳市海川实业股份有限公司 | High adhesion metal conditioner for coating metal |
| CN1752160A (en) * | 2005-09-29 | 2006-03-29 | 武汉理工大学 | Phosphoric acid doped polyphenylamine phosphate priming paint and preparing process thereof |
| CN201792688U (en) * | 2010-07-05 | 2011-04-13 | 江阴市中江彩板有限公司 | Red copper wire-drawing color coating steel plate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040009300A1 (en) * | 2000-10-11 | 2004-01-15 | Toshiaki Shimakura | Method for pretreating and subsequently coating metallic surfaces with paint-type coating prior to forming and use og sybstrates coated in this way |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569986A (en) * | 2003-07-21 | 2005-01-26 | 深圳市海川实业股份有限公司 | High adhesion metal conditioner for coating metal |
| CN1752160A (en) * | 2005-09-29 | 2006-03-29 | 武汉理工大学 | Phosphoric acid doped polyphenylamine phosphate priming paint and preparing process thereof |
| CN201792688U (en) * | 2010-07-05 | 2011-04-13 | 江阴市中江彩板有限公司 | Red copper wire-drawing color coating steel plate |
Non-Patent Citations (3)
| Title |
|---|
| 汽车修补漆在豪华大客车上的应用;马孟度;《材料保护》;20060531;第39卷(第5期);第68-70页 * |
| 金晓鸿.防腐蚀涂料和涂装技术(VII).《材料开发与应用》.2002,第17卷(第1期),第42-46页. * |
| 马孟度.汽车修补漆在豪华大客车上的应用.《材料保护》.2006,第39卷(第5期),第68-70页. |
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