CN102896082B - Coating process - Google Patents
Coating process Download PDFInfo
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- CN102896082B CN102896082B CN201210404474.3A CN201210404474A CN102896082B CN 102896082 B CN102896082 B CN 102896082B CN 201210404474 A CN201210404474 A CN 201210404474A CN 102896082 B CN102896082 B CN 102896082B
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Abstract
The invention discloses a coating process. The coating process comprises the following steps: pre-treating a base material; then, degreasing and/or cleaning rust, and drying; and finally, coating prime lacquer. The coating process simplifies the complex pre-treatment process, not only completely satisfies the existing economical model based on low energy consumption, low exhaustion and low pollution, but also generates the effects of circular economy and reaches the requirements for establishing a cleaning production mechanism.
Description
Technical field
The present invention relates to field of coating, specifically relate to a kind of innovation and the coating process of new material in application techniques of coating process.
Background technology
Reduce painting cost, improve coating quality, reduce the theme that application public hazards are application techniques development always.
In tradition coating process, when to metal etc., easily rust article carry out the surface treatment of application anti-corrosive primer, more than the surfaces such as metal need reach anticorrosion rust cleaning standard St3 level, by to metal surface through electronic or manual polishing, sandblast supervisor, by all surface corrosion parts and original end, the complete Ex-all of finish paint; In the construction stage, at least need the end, in, face is coated with and is coated with respectively the erosion that just can prevent erosion.Through the workpiece of traditional coating process processing, tensile strength only has 600-800psi, and coating easily departs from substrate surface; The hole that surface of the work forms because of corrosion, common coating can only be at surperficial package, and hole inside cannot be goed deep into, and after application, corrosion still can be continued in inside, original space; Aspect corrosion resistance, do not test by many internal authorities, and itself is containing a large amount of organic solvents, inflammable.
The major defect existing in tradition coating process is:
1, there is the disadvantages such as energy resource consumption is high, three waste discharge is many, environmental pollution is high and be harmful to operator's health in traditional coating process pre-treatment link;
2, pretreatment procedure complexity, relates to supporting technical recipe, parameter is a lot of, is unfavorable for company's low cost movement and worker's operation;
3, be subject to the restriction in space, may cause large-scale painting part (as passenger vehicle, hull etc.) cannot phosphatization, passivation, be difficult to guarantee that base material obtains good adhesive force and anticorrosion texts, thereby cause coating bad, produce unnecessary doing over again;
4, sewage disposal complexity, especially passivation procedure is to adopt containing chromium passivating material, Cr6
+belong to extremely toxic substance, and have carcinogenesis, the maximal emission allowing in industrial wastewater is 0.5mg/L.Use the passivating material containing chromium, can increase undoubtedly the processing cost of waste water;
The effects such as that the lead 5, adding in electrophoretic paint and tin can play is anticorrosion, catalysis, passivation, acceleration are crosslinked, but lead be the material that toxicity is very strong, tin is also heavy metal element, they all can be to water body generation pollution.
Summary of the invention
In view of the problem that above-mentioned prior art exists, the present invention is proposed.
Therefore, the technical problem to be solved in the present invention is, how to provide a kind of Coating Pretreatment operation to simplify and can reduce " three wastes " discharge, select not leaded and chromate, low volatile organic to there is the coating process of the coating that fire prevention, chemically resistant material permeate simultaneously.
For solving the problems of the technologies described above, the invention provides following technical scheme: a kind of coating process, it is first base material to be carried out to pretreatment, then carries out degreasing and/or rust cleaning, then dry, finally sprays priming paint.
The present invention specifically operating procedure in the following order realizes coating process:
Step 1: pretreatment, base material is classified, determine pretreated method and remove foreign material on base material etc.;
Step 2: degreasing and/or rust cleaning, the judgement selection cleaning machine according to pretreatment to base material and the cleaning agent of coupling, after cleaning, carry out draining processing to the base material cleaning;
Step 3: dry, select suitable baking temperature and drying time according to base material;
Step 4: spraying priming paint, the non-painting of base material position is covered, then carry out substrate surface dedusting, finally apply as priming paint using the anticorrosion environment-friendly materials of band rust.
As a kind of preferred version of coating process of the present invention, wherein: in described step 1, base material being classified is that primary coat, rustless metal and/or glass fibre are divided into a class, and corrosion metals and/or porose base material are divided into another kind of.
As a kind of preferred version of coating process of the present invention, wherein: while corrosion metals being carried out to pretreatment in described step 1, rusting grade and derusting grade to corrosion metals are judged.
As a kind of preferred version of coating process of the present invention, wherein: determine in described step 1 that pretreated method is that the weight of base material greasy dirt is estimated, and determines and takes corresponding greasy dirt detergent.
As a kind of preferred version of coating process of the present invention, wherein: cleaning machine described in step 2 is hot water and cold water general-purpose type, and pressure reaches the jetting machine of 3～25MPa.
As a kind of preferred version of coating process of the present invention, wherein: while rust cleaning in described step 2, according to Svensk Standard SIS055900 to base material rusting grade when C, the D grade, jetting machine selection pressure is between 10～25MPa.
As a kind of preferred version of coating process of the present invention, wherein: while rust cleaning in described step 2, according to Svensk Standard SIS055900 to base material rusting grade when A, the B grade, jetting machine selection pressure is between 3～10MPa.
As a kind of preferred version of coating process of the present invention, wherein: when primary coat, rustless metal and/or glass fibre one class base material coatings in described step 4, its wet-film thickness is 5mils, build 2.5mils.
As a kind of preferred version of coating process of the present invention, wherein: when corrosion metals and/or porose base material one class base material coatings in described step 4, its wet-film thickness is 8mils, build 4mils.
Adopt technical scheme of the present invention, there is following useful technique effect:
Coating process of the present invention allows complicated pretreatment procedure simplify, and not only meets existingly taking low energy consumption, low emission, low pollution as basic economic model completely, and can produce recycling economy effect and reach the requirement that creates clean production mechanism.
The present invention adopt water under high pressure by greasy dirt or old paint and the lepidiod corrosion partial flushing peeled off clean, after surperficial bone dry, get final product application, can do subbing or " three-in-one " end, in, the single layer coating that is coated with of face, operation is simple.After application, surface tensile strength 3 Zhou Houke reach 6780psi, sclerosis can reach 12000psi completely, and contain special solvent carrier, can infiltrate surface pore, not only the moisture in all spaces can be got rid of, self can produce expansion simultaneously, and all spaces are enriched, the authoritative institution test through the world through tests such as 15000h spray salt and the weather-proof tests of uvioresistant, has antiacid, alkalescence and solvent borne simultaneously, not leaded and chromate, low volatile organic, environmentally friendly and there is the advantages such as fire prevention, resistance to chemical corrosion.
Brief description of the drawings
Fig. 1 is coating process schematic flow sheet of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, coating process of the present invention comprises the steps.Step 111, carries out pretreatment to base material; Step 112, carries out degreasing and/or rust cleaning; Step 113, dry processing; Step 114, sprays priming paint.
Technique of the present invention is first carried out pretreatment to base material, is mainly:
1, to base material classify (aluminium, steel, fiber, fiberglass etc.) determine pretreated method;
2, the rusting grade to steel and derusting grade are judged (being up to st3 grade);
3, the weight of base material greasy dirt is estimated, to take corresponding greasy dirt detergent;
4, the dust on removing painting part, welding slag, foreign material etc.
The object of processing before application is to remove the grease on coated article surface, greasy dirt, corrosion product, residual impurity thing etc., and gives surface certain chemistry, physical characteristic, to increase coat of paint adhesive force, and the protectiveness of increase coated article and ornamental.The importance of application front surface processing is to provide a clean painted surface, improve the adhesive force of painting layer, generate the nonconducting nonmetallic chemical composition coating of one deck, improve the anti-corrosion capability of coating, and there is in conjunction with the anticorrosion environment-friendly materials of band rust the characteristic such as effect and extremely strong penetrating power that makes active corrosion " deactivation " " solidization ", can meet the protection quality requirement of coating, therefore lower to the requirement of ground pre-treatment, especially steel surface rust cleaning is up to St3 grade, adopt jetting machine by greasy dirt or the old paint of having peeled off and lepidiod corrosion partial flushing clean, bone dry gets final product application.
Then carry out degreasing and/or processing of rust removing, be mainly:
1, according to pretreatment 111, the judgement of base material is selected the cleaning agent of hot water or cold-water high-pressure cleaning machine and coupling.Corrosion is more serious, according to Svensk Standard SIS055900 to base material rusting grade when C, the D grade, selection pressure is at 1500～3500psi, approximately 10～25MPa, so that better rust cleaning; Not serious for corrosion, can select 450～1500psi to base material rusting grade at A, B grade substrate surface according to Svensk Standard SIS055900, approximately 3～10MPa, therefore should adopt cold and hot general-purpose type, pressure to reach the machine of 3～25MPa for the selection of jetting machine;
It should be noted that,
According to Svensk Standard SIS055900.For steel plate, steel with oxide skin or band rust, corrosion is divided into A by this standard, B, and C, D4 grade:
A: the complete oxidized skin in steel surface covers, even and if have rust also few.
B: steel surface starts to get rusty, thus oxide skin and then beginning slabbing.
C: on steel surface, oxide skin has been become rusty and fallen to, but can with the naked eye see few spot corrosion.
D: on steel surface, oxide skin has been become rusty and fallen to, and naked eyes can be seen the spot corrosion of a great deal of.
And, 1 ft lbf/inch
2(psi)=6.895 kPas of (kPa)=0.0703 kilograms/centimetre
2(kg/cm
2)=0.0689 bar (bar)=0.068 atmospheric pressure (atm).
Whether 2, the base material cleaning is carried out to draining, observe greasy dirt and eliminate, whether derusting grade reaches construction requirement, return rust can do the processing of letting pass for trace.
Then be dried processing, according to inhomogeneous base material, select suitable baking temperature and drying time.
Finally spray priming paint, be mainly:
1, the non-painting of base material position is covered;
2, substrate surface is carried out to dedusting, carry out wiping to reach better degreasing effect with special degreaser, thoroughly solve the coating that greasy dirt causes bad;
3, to be with the anticorrosion environment-friendly materials of rust as priming paint, coating thickness need be determined by the actual conditions at coated position by relevant technologies personnel, be generally 1-3 layer.
Now, execution conditions: best construction temperature is 4～49 DEG C, and should not be at rainy day or temperature below 10 DEG C, more than 70 DEG C application; Best construction humidity is humidity 45～55%, and along with being increased to more than 60% of humidity, the hardening time of coating surface is shorter.
Construction tool can adopt soft hairbrush, cylinder, airless spray gun etc.
In the time that primary coat, rustless metal and/or glass fibre one class base material are applied, its wet-film thickness is 5mils, build 2.5mils, and coating weight is 7.14m
2/ litre; In the time that corrosion metals and/or porose base material one class base material are applied, its wet-film thickness is 8mils, build 4mils, and coating weight is 4.76m
2/ litre.
Herein, 1mil=0.0254mm.
In concrete enforcement, the band anticorrosion environment-friendly materials of rust and traditional rust-inhibiting primer coating test data are:
To sum up, the present invention allows complicated pretreatment procedure simplify, and not only meets existingly taking low energy consumption, low emission, low pollution as basic economic model completely, and can produce recycling economy effect and reach the requirement that creates clean production mechanism.
It should be noted that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (1)
1. a coating process, is characterized in that: first base material is carried out to pretreatment, then carry out degreasing and rust cleaning, then dry processing, finally sprays priming paint;
Described pretreatment is that base material is classified, and corrosion metals and/or porose base material are divided into a class, determines pretreated method and removes the foreign material on base material;
Described degreasing and rust cleaning are the cleaning agents of according to pretreatment, the judgement of base material being selected cleaning machine and coupling, after cleaning, the base material cleaning is carried out to draining processing, wherein, described cleaning machine is hot water and cold water general-purpose type, pressure reaches the jetting machine of 3～25MPa, when rust cleaning, according to Svensk Standard SIS055900 to base material rusting grade when A, the B grade, jetting machine selection pressure is between 3～10MPa, and according to Svensk Standard SIS055900 to base material rusting grade when C, the D grade, jetting machine selection pressure is between 10～25MPa;
Described being dried is to select suitable baking temperature and drying time according to base material;
Described spraying priming paint is that the non-painting of base material position is covered, and then carries out substrate surface dedusting, finally applies as priming paint using the anticorrosion environment-friendly materials of band rust, and wherein, while coating, its wet-film thickness is 8mils, build 4mils.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210404474.3A CN102896082B (en) | 2012-10-22 | 2012-10-22 | Coating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210404474.3A CN102896082B (en) | 2012-10-22 | 2012-10-22 | Coating process |
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|---|---|
| CN102896082A CN102896082A (en) | 2013-01-30 |
| CN102896082B true CN102896082B (en) | 2014-11-05 |
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|---|---|---|---|
| CN201210404474.3A Active CN102896082B (en) | 2012-10-22 | 2012-10-22 | Coating process |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103625652A (en) * | 2013-11-28 | 2014-03-12 | 陕西飞机工业（集团）有限公司 | Aircraft body surface temporary protection method used on the way of aircraft ferry flights |
| CN106269428A (en) * | 2016-08-19 | 2017-01-04 | 广东冠能电力科技发展有限公司 | A kind of Outdoor Terminal Case spray painting technique |
| CN106269438A (en) * | 2016-10-27 | 2017-01-04 | 欧派家居集团股份有限公司 | Wood products and coating process thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1032476B1 (en) * | 1997-11-20 | 2002-03-20 | E.I. Du Pont De Nemours & Company Incorporated | Method for multi-layered coating of substrates |
| CN1409657A (en) * | 1999-12-17 | 2003-04-09 | 坎梅陶尔股份有限公司 | Method for producing coated metal surfaces and its use |
| CN102489434A (en) * | 2011-11-16 | 2012-06-13 | 上海路丰达表面材料科技有限公司 | Dust-free corrosion-resistant coating process for steel materials |
-
2012
- 2012-10-22 CN CN201210404474.3A patent/CN102896082B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1032476B1 (en) * | 1997-11-20 | 2002-03-20 | E.I. Du Pont De Nemours & Company Incorporated | Method for multi-layered coating of substrates |
| CN1409657A (en) * | 1999-12-17 | 2003-04-09 | 坎梅陶尔股份有限公司 | Method for producing coated metal surfaces and its use |
| CN102489434A (en) * | 2011-11-16 | 2012-06-13 | 上海路丰达表面材料科技有限公司 | Dust-free corrosion-resistant coating process for steel materials |
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| CN102896082A (en) | 2013-01-30 |
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Effective date of registration: 20180207 Address after: 224000 South Road South Road, Yancheng economic and Technological Development Zone, Jiangsu Province, No. 43 Co-patentee after: Jiangsu Xinxin energy passenger car Co., Ltd. Patentee after: Jiangsu Aoxin New Energy Automobile Co., Ltd. Address before: 224007 South Road South Road, Yancheng City Development Zone, Jiangsu Province, No. 43 Patentee before: Jiangsu Aoxin New Energy Automobile Co., Ltd. |
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Effective date of registration: 20191112 Address after: 224000 No. 69, East Ring Road, Yancheng City economic and Technological Development Zone, Jiangsu Co-patentee after: Jiangsu Xinxin energy passenger car Co., Ltd. Patentee after: New Energy Automobile Research Institute Co Ltd Address before: 224000 South Road South Road, Yancheng economic and Technological Development Zone, Jiangsu Province, No. 43 Co-patentee before: Jiangsu Xinxin energy passenger car Co., Ltd. Patentee before: Jiangsu Aoxin New Energy Automobile Co., Ltd. |
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