CN104289406A - Process for coating water-based anticorrosive paint on railway wagon - Google Patents

Process for coating water-based anticorrosive paint on railway wagon Download PDF

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Publication number
CN104289406A
CN104289406A CN201410580820.2A CN201410580820A CN104289406A CN 104289406 A CN104289406 A CN 104289406A CN 201410580820 A CN201410580820 A CN 201410580820A CN 104289406 A CN104289406 A CN 104289406A
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paint
car
water
application
railway freight
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CN104289406B (en
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王爱民
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SHANXI HUABAO COATINGS CO Ltd
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SHANXI HUABAO COATINGS CO Ltd
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Abstract

The invention discloses a process for coating water-based anticorrosive paint on a railway wagon and belongs to the technical field of coating processes. The process for coating the water-based anticorrosive paint on the railway wagon comprises four steps of 1 base material surface treatment; 2 preparation of the water-based anticorrosive paint; 3 setting a coating environment; 4 setting coating process. In the process, the spraying environment, a spraying device, applicable viscosity of the water-based anticorrosive paint, a spraying process and other requirements are set, what's more important is that a water-based anticorrosive paint matching scheme and process suitable for coating of the railway wagon is formulated, the water-based anticorrosive paint coating requirement of the railway wagon is met, the problem of water-based anticorrosive paint coating construction is solved, and railway wagon coating quality is ensured.

Description

The technique of railway freight-car application aqueous anticorrosion paint
Technical field
The present invention relates to a kind of technique of railway freight-car application aqueous anticorrosion paint, belong to coating process technical field.
Background technology
Existing coating process is from the processing method of base material, requirement and painting, the process matched therewith etc. of paint does not all meet modern aqueous anticorrosion paint coating specification, especially during the application of use corrosion resistant coating, existing technique cannot meet coating specification and coating quality, the most apparent problem: the serious quality problems because coating process causes such as be exactly paint film extensive blistering after application, come off, get rusty.
Summary of the invention
The present invention aims to provide a kind of technique of railway freight-car application aqueous anticorrosion paint, paint film extensive blistering after solving water paint application, the serious quality problems coming off, to get rusty etc. because coating process causes.
The technique of a kind of railway freight-car application aqueous anticorrosion paint provided by the invention, comprises following content:
1, substrate surface treatment: innovate for existing technique deficiency, to the processing method of base material, require clear and definite implementing method, especially the oily waste treatment on base material, requirement neutral cleaners (market is purchased) or organic solvent (dimethylbenzene, butanols) are cleared up, the scaling loss of commissure or residue are polished clean with coarse sandpaper, as cleaning is unclean, easily causes paint film and base material " double-layer fur " phenomenon after application, very easily cause foaming, come off, affect coating quality;
The concrete steps of substrate surface treatment are:
Residue impurities after the burr, welding slag and the scaling loss that produce in a, first removing metal base process;
B, metallic substrate surface eliminate rust, and cleannes are to Sa2.5 level;
Metallic substrate surface after c, rust cleaning should remove descale, rust and dirt completely, and has certain roughness, then with dry compressed air or the cleaning of clean hairbrush, and removing sand grains, dust;
D, finally oil removing is carried out to metallic substrate surface, adopt neutral cleaners or organic solvent to clear up greasy dirt, until metallic substrate surface is without oil, dry, then japanning;
Described neutral cleaners, as Xiang mound, Shanghai XL-108 steel construction industrial cleaning agent or Xi'an Lan Dao LAN-708 steel construction industrial cleaning agent.
2, aqueous anticorrosion paint is prepared;
Concrete steps are:
(1) for the base material of carbon steel material, railway freight-car water-soluble paint priming paint and railway freight-car water-soluble paint finish paint supporting;
Water-soluble paint before using needs whole bucket paint electric stirring to stir, and then with clear water dilution, is adjusted to working viscosity, does not stay extension to be advisable to spray, and filters use with 80 eye mesh screens; During use air gun, viscosity is: be coated with 4# cup/55 second; Airless spray gun rotary viscosity is used to be 2.0Pas.
(2) for the base material of stainless steel material, ethene improved phosphatization shop primer and railway freight-car water-soluble paint bottom surface are unified supporting;
Ethene improved phosphatization shop primer in proportion 1:4 interpolation curing agent stirs, and directly uses after filtering with 80 eye mesh screens;
Water soluble coating before using needs whole bucket paint electric stirring to stir, and then with clear water dilution, is adjusted to working viscosity, does not stay extension to be advisable to spray, and filters use with 80 eye mesh screens; During use air gun, viscosity is: be coated with 4# cup/55 second; Airless spray gun rotary viscosity is used to be 2.0Pas.
3, painting environment: existing coating process application aqueous anticorrosion paint is not suitable for, because aqueous anticorrosion paint and oil paint are essentially different, a lot of application condition is not suitable for, as: temperature, humidity, when temperature is low or high humidity time, just cannot operation, we have employed the base material temperature flowing of preheating in this respect, are formed and circulate air, improve temperature, reduce humidity, reach the temperature of coating specification, humidity, also ensure that coating quality;
Concrete painting environment is:
(1) water paint product storage temperature is more than 5 DEG C;
(2) advise that painting environment temperature is for being not less than 10 DEG C;
(3) suggestion is coated workpiece temperature is more than 10 DEG C;
(4) painting environment humidity requirement is less than 75%.
4, coating process: existing coating process, very easily cause paint film appearance coarse, foaming phenomena, because oil paint is different from the rate of drying of aqueous anticorrosion paint, aqueous anticorrosion paint fast drying, as by below the first vehicle body of existing technique then above vehicle body, coating cloud down descends slowly and lightly, the paint film surface drying of the car body lower surface of application, at this moment the vehicle body upper portion coating cloud of last spraying descends slowly and lightly bottom, coast of paint grain will be formed, not only coarse but also easily come off, affect product quality, we have also formulated strict coating process order in this respect: first application vehicle bottom, then application vehicle body, last application car body is outside, the application order of car body is first vehicle body upper portion aftercarriage bottom, solve the deficiency of existing coating process,
The coating equipment adopted comprises any one in following equipment: (1) air gun: model W-71 or W-77, bore 1.2-2.0mm;
(2) airless spray gun: model XPQ-1 or XPQ-2 or XPQ-18, bore 2.0-3.5mm;
(3) airless sprayer: selection pressure is than any one in 35:1,45:1,65:1;
The concrete steps of described coating process are:
(1) when carrying out application, spray gun should keep 35 ~ 40 ° at the uniform velocity to spray with ground, and rifle, apart from being 35cm ~ 40cm, being repaired drain spray position after application completes, can be used spray gun or brushing, spray gun can not be used to carry out partial points spray;
(2) according to above-mentioned steps even application 2 times, and once spray build and be no more than 30 μm;
(3) application order is: 1. underframe; 2. in car body: first vehicle body upper portion, aftercarriage bottom; 3. outside car body: first vehicle body upper portion, aftercarriage bottom.
Further, the construction environment of described (4) coating process is:
(1) construct under normal condition:
1. when environment temperature is not less than 10 DEG C, direct spraying after removing surface completes, takes natural drying or toasts as required after spraying, dries 50min at 50 DEG C;
If 2. spraying operation runs into dust and sand weather, should construct in the environment of relative closure;
3. when relative humidity is greater than 75%, first preheating is carried out to workpiece, dry 40min at 55 DEG C;
(2) winter temperature is greater than 75% construction lower than 10 DEG C of constructions or rainy day humidity:
1. need before application to carry out 60min preheating in the drying room more than 50 DEG C, to ensure that application temperature meets execution conditions, temperature is not less than 10 DEG C, carries out baking immediately dry after application;
2. rainy day humidity is comparatively large, open cycle blower fan, accelerates air flow rate, suitably reduces humidity;
Need in the transportation of 3. painting to adopt Insulation, ensure that environment temperature is not less than 5 DEG C;
4. paint storehouse and paint room need to take heating measure, ensure that indoor temperature is not less than 10 DEG C.
Further, for the base material of carbon steel material, coating process is:
A, first prepare aqueous anticorrosion paint, priming paint finish paint is supporting;
After b, metallic substrate surface are disposed, spraying railway freight-car water-soluble paint priming paint;
C, railway freight-car after dry 60min, then spray railway freight-car water-soluble paint finish paint with water-soluble paint priming paint;
When d, spraying railway freight-car are with water-soluble paint finish paint, thoroughly to eliminate grease, dust foreign material that upper track paint brings due to other operation surfaces.
Further, for the base material of stainless steel material, coating process is:
A, first prepare aqueous anticorrosion paint, priming paint finish paint bottom surface is unified;
After b, metallic substrate surface are disposed, spray ethene improved phosphatization shop primer, build is 20 μm;
From dry 1h after the spraying of c, ethene improved phosphatization shop primer, the unification of railway freight-car water-soluble paint bottom surface can be sprayed;
When d, spraying railway freight-car are unified with water-soluble paint bottom surface, thoroughly to eliminate grease, dust foreign material that upper track paint brings due to other operation surfaces.
The present invention is about the process matched therewith of aqueous anticorrosion paint, and we have developed two cover aqueous anticorrosion paint auxiliary plans, for different base materials namely: carbon steel base material and stainless steel substrate, not only meet coating process but also reach supporting requirement.
Of the present invention beneficial effect:
Railway freight-car application aqueous anticorrosion paint special process of the present invention sets painting environments, spraying equipment, the working viscosity of aqueous anticorrosion paint, the requirements such as spraying coating process, the most important thing is aqueous anticorrosion paint auxiliary plan and the technique of having formulated the application of applicable application railway freight-car, reach the requirement of railway freight-car application aqueous anticorrosion paint, solve the construction problem of railway freight-car application aqueous anticorrosion paint, ensure that the quality of application aqueous anticorrosion paint.
Detailed description of the invention
Further illustrate the present invention below by embodiment, but be not limited to following examples.
embodiment 1: railway freight-car application aqueous anticorrosion paint special process ()
For the base material of carbon steel material, adopt following spraying coating process:
One, surface treatment
1, the impurity such as the residue after burr, welding slag and the scaling loss produced in metal base process are first removed.
2, metallic substrate surface eliminates rust, and cleannes are to Sa2.5 level.
3, the metallic substrate surface after rust cleaning should remove descale, rust and dirt completely, and has certain roughness, then with dry compressed air or the cleaning of clean hairbrush, and removing sand grains, dust.
4, finally oil removing is carried out to metallic substrate surface, adopt neutral cleaners or special organic solvent (dimethylbenzene, butanols) to clear up greasy dirt, until metallic substrate surface is without oily, dry, can japanning.
Described neutral cleaners is Xiang mound, Shanghai XL-108 steel construction industrial cleaning agent.
Two, auxiliary plan
1, railway freight-car water-soluble paint (priming paint) is supporting with railway freight-car water-soluble paint (finish paint).
Described railway freight-car water-soluble paint is applicant's patented product " aqueous anticorrosion paint ", and the patent No. is ZL201110332034.7; Lower same.
2, after metallic substrate surface is disposed, spraying railway freight-car is with water-soluble paint (priming paint).
3, railway freight-car is with after water-soluble paint (priming paint) surface drying (from dry 60min), can spray railway freight-car water-soluble paint (finish paint).
When 4, spraying railway freight-car with water-soluble paint (finish paint), thoroughly to eliminate the foreign material such as grease, dust that upper track paint brings due to other operation surfaces.
Three, painting environment
1, product storage temperature: more than 5 DEG C
2, painting environment temperature is advised: more than 15 DEG C; Minimum painting environment temperature: 10 DEG C
3, workpiece temperature is advised: more than 10 DEG C
4, painting environment humidity requirement: less than 75%
Four, coating equipment
1, air gun: model W-71, W-77 bore 1.2-2.0mm
2, airless spray gun: model XPQ-1 XPQ-2 XPQ-18 bore 2.0-3.5mm
3, airless sprayer: pressure ratio 35:1,45:1,65:1
Adopt any one in above equipment.
Five, cleaning equipment
Oil paint switches the cleaning of water soluble coating spraying equipment:
1, paint (former pipeline makes the diluent of painting) in diluent flushing pipe is painted.
2, use 1#(acetone again) scavenger specially, 2#(butyl glycol ether) scavenger specially rinse.
3, finally rinsed well by scavenger specially with the clear water of about 10kg, cleaning, to not having oil bloom, can spray water-soluble paint.
4, illustrate
All alkyd paint in the pipeline of 4.1 former use alkyd paint sprayings and equipment, the diluent that alkyd paint uses is dimethylbenzene and 200# solvent naphtha, before conversion water paint, first use dimethylbenzene and 200# solvent naphtha flushing pipe and equipment, rinse to rinse solvent is as clear as crystal, consumption is about 5kg, then use 1#(acetone) scavenger specially cleaning transparent, consumption is about 2kg, use 2#(butyl glycol ether again) scavenger specially cleaning is to transparent, consumption is about 2kg, finally use about 10kg tap water one time, now, the cleaning of oil paint conversion water paint completes, water paint can be used.
All epoxy-based lacquers in the pipeline of 4.2 former use epoxy-based lacquers sprayings and equipment, the diluent that epoxy-based lacquers uses is dimethylbenzene and butanols, before conversion water paint, first carry out pipe blow-through and equipment with dimethylbenzene and butanols, rinse to rinse solvent is as clear as crystal, consumption is about 5kg, then use 1#(acetone) scavenger specially cleaning transparent, consumption is about 3kg, use 2#(butyl glycol ether again) scavenger specially cleaning is to transparent, consumption is about 3kg, finally use about 10kg tap water one time, now, the cleaning of oil paint conversion water paint completes, water paint can be used.
The cleaning of water paint conversion oil paint spraying equipment:
After water paint uses, when changing use oil paint, otherwise carry out with front program, as, first rinse to transparent with water, use 2#(butyl glycol ether again), 1#(acetone) scavenger specially cleaning to transparent, finally rinse one time again with the diluent of the oil paint that will use, namely complete the cleaning of water paint conversion oil paint.
Six, paint method
Water soluble coating before using needs whole bucket paint electric stirring to stir, and then with clear water dilution, is adjusted to working viscosity (adjust viscosity according to site environment situation, spraying does not stay extension to be advisable), filters use with 80 order nets.Air gun (being coated with 4# cup/55 second), airless spray gun (rotary viscosity/2.0Pas)
Seven, coating process
When carrying out application, spray gun should keep 35 ~ 40 ° at the uniform velocity to spray with ground.After application completes, drain spray position is repaired, spray gun or brushing can be used, spray gun can not be used to carry out partial points spray, prevent coating cloud from dispersing, cause coating surface coarse, affect appearance of film quality.
1, rifle is apart from about 35cm
2, even application 2 times
3, once spray build and be no more than 30 μm
4, application order: (first up and then down) → car body outer (first up and then down) in underframe → car body
Eight, suggestion technique
1, construct under normal condition
1., when environment temperature is not less than 10 DEG C, direct spraying after removing surface completes, can natural drying after spraying; Also can toast as required, 50 DEG C are dried 50min.
If 2. spraying operation runs into dust and sand weather, should construct in the environment of relative closure.
3. when relative humidity is greater than 75%, preheating can be carried out to workpiece, about 55 DEG C, dry 40min.
2, winter construction (temperature is lower than 10 DEG C) or rainy day construction (humidity is greater than 75%)
1. need before application to carry out 60min preheating in the drying room more than 50 DEG C, to ensure that application temperature meets execution conditions, temperature is not less than 10 DEG C, carries out baking immediately dry after application.
2. rainy day humidity is comparatively large, open cycle blower fan, accelerates air flow rate, suitably reduces humidity.
Need in the transportation of 3. painting to adopt Insulation, ensure that environment temperature is not less than 5 DEG C.
4. paint storehouse and paint room need to take heating measure, ensure that indoor temperature is not less than 10 DEG C.
Nine, points for attention
1, labour protection articles for use please have been dress during construction.
2, this product avoids contact skin and eyes, once occur to rinse with a large amount of clear water in time.
3, this product is water soluble coating, and will carry out the Insulation stored and in transport winter, temperature is not less than 5 DEG C.
embodiment 2: railway freight-car application aqueous anticorrosion paint special process (two)
For the base material of stainless steel material, adopt following spraying coating process:
One, surface treatment
1, the impurity such as the residue after burr, welding slag and the scaling loss produced in metal base process are first removed;
2, metallic substrate surface eliminates rust, and cleannes are to Sa2.5 level;
3, the metallic substrate surface after rust cleaning should remove descale, rust and dirt completely, and has certain roughness, then with dry compressed air or the cleaning of clean hairbrush, and removing sand grains, dust;
4, finally oil removing is carried out to metallic substrate surface, adopt neutral cleaners or special organic solvent (dimethylbenzene, butanols) to clear up greasy dirt, until metallic substrate surface is without oily, dry, can japanning.
Described neutral cleaners is Xi'an Lan Dao LAN-708 steel construction industrial cleaning agent.
Three, auxiliary plan
1, ethene improved phosphatization shop primer and railway freight-car water-soluble paint (bottom surface is unified) supporting;
2, after metallic substrate surface is disposed, spray ethene improved phosphatization shop primer, build is 20 μm;
3, certainly dry 1h after ethene improved phosphatization shop primer spraying, can spray railway freight-car water-soluble paint (bottom surface unification); When 4, spraying railway freight-car with water-soluble paint (bottom surface unification), thoroughly to eliminate the foreign material such as grease, dust that upper track paint brings due to other operation surfaces.
Three, painting environment
1, product storage temperature: more than 5 DEG C
2, painting environment temperature is advised: more than 15 DEG C; Minimum painting environment temperature: 10 DEG C
3, workpiece temperature is advised: more than 10 DEG C
4, painting environment humidity requirement: less than 75%
Four, coating equipment
1, air gun: model W-71, W-77 bore 1.2-2.0mm
2, airless spray gun: model XPQ-1 XPQ-2 XPQ-18 bore 2.0-3.5mm
3, airless sprayer: pressure ratio 35:1,45:1,65:1
Adopt any one in the said equipment.
Five, cleaning equipment
Paint switches the cleaning of water soluble coating spraying equipment:
1, paint (former pipeline makes the diluent of painting) in diluent flushing pipe is painted;
2, use 1#(acetone again) scavenger specially, 2#(butyl glycol ether) scavenger specially rinse;
3, finally rinsed by scavenger specially with the clear water of about 10kg, cleaning, to not having oil bloom, can spray water-soluble paint;
4, illustrate
All alkyd paint in the pipeline of 4.1 former use alkyd paint sprayings and equipment, the diluent that alkyd paint uses is dimethylbenzene and 200# solvent naphtha, before conversion water paint, first use dimethylbenzene and 200# solvent naphtha flushing pipe and equipment, rinse to rinse solvent is as clear as crystal, consumption is about 5kg, then use 1#(acetone) scavenger specially cleaning transparent, consumption is about 2kg, use 2#(butyl glycol ether again) scavenger specially cleaning is to transparent, consumption is about 2kg, finally use about 10kg tap water one time, now, the cleaning of oil paint conversion water paint completes, water paint can be used.
All epoxy-based lacquers in the pipeline of 4.2 former use epoxy-based lacquers sprayings and equipment, the diluent that epoxy-based lacquers uses is dimethylbenzene and butanols, before conversion water paint, first carry out pipe blow-through and equipment with dimethylbenzene and butanols, rinse to rinse solvent is as clear as crystal, consumption is about 5kg, then use 1#(acetone) scavenger specially cleaning transparent, consumption is about 3kg, use 2#(butyl glycol ether again) scavenger specially cleaning is to transparent, consumption is about 3kg, finally use about 10kg tap water one time, now, the cleaning of oil paint conversion water paint completes, water paint can be used.
Water soluble coating switches the cleaning of paint spraying equipment:
1, with water-soluble paint in clear water flushing pipe;
2, use 2# scavenger specially, rinse residual water with 1# scavenger specially again;
3, finally paint diluent to rinse, to there is no moisture, can water-soluble paint be sprayed;
4, illustrate: water paint conversion oil paint
After water paint uses, when changing use oil paint, otherwise carry out with front program, as, first rinse to transparent with water, use 2#(butyl glycol ether again), 1#(acetone) scavenger specially cleaning to transparent, finally rinse one time again with the diluent of the oil paint that will use, namely complete the cleaning of water paint conversion oil paint.
Six, paint method
1, ethene improved phosphatization shop primer needs (1:4) to scale to add curing agent to stir, directly use after filtering with 80 order nets.
2, water soluble coating before using needs whole bucket paint electric stirring to stir, and then with clear water dilution, is adjusted to working viscosity (adjust viscosity according to site environment situation, spraying does not stay extension to be advisable), filters use with 80 order nets.Air gun (being coated with 4# cup/55 second), airless spray gun (rotary viscosity/2.0Pas).
Seven, coating process
When carrying out application, spray gun should keep 35 ~ 40 ° at the uniform velocity to spray in ground.After application completes, drain spray position is repaired, spray gun or brushing can be used, spray gun can not be used to carry out partial points spray, prevent coating cloud from dispersing, cause coating surface coarse, affect appearance of film quality.
1, rifle is apart from about 35cm
2, even application 2 times
3, once spray build and be no more than 30 μm
4, application order: underframe → inwall (first up and then down) → outer wall (first up and then down).
Eight, suggestion technique
1, construct under normal condition
1., when environment temperature is not less than 10 DEG C, direct spraying after removing surface completes, can natural drying after spraying; Also can toast as required, 50 DEG C are dried 50min;
If 2. spraying operation runs into dust and sand weather, should construct in the environment of relative closure;
3. when relative humidity is greater than 75%, preheating can be carried out to workpiece, about 55 DEG C, dry 40min;
2, winter construction (temperature is lower than 10 DEG C) or rainy day construction (humidity is greater than 75%)
1. need before application to carry out 60min preheating in the drying room more than 50 DEG C, to ensure that application temperature meets execution conditions, temperature is not less than 10 DEG C, carries out baking immediately dry after application;
2. rainy day humidity is comparatively large, open cycle blower fan, accelerates air flow rate, suitably reduces humidity;
Need in the transportation of 3. painting to adopt Insulation, ensure that environment temperature is not less than 5 DEG C;
4. paint storehouse and paint room need to take heating measure, ensure that indoor temperature is not less than 10 DEG C.
Nine, points for attention
1, labour protection articles for use please have been dress during construction;
2, this product avoids contact skin and eyes, once occur to rinse with a large amount of clear water in time;
3, this product is water soluble coating, and will carry out the Insulation stored and in transport winter, temperature is not less than 5 DEG C.

Claims (10)

1. the technique of railway freight-car application aqueous anticorrosion paint, is characterized in that: comprise following content:
(1) substrate surface treatment: the greasy dirt on base material, requirement neutral cleaners or organic solvent are cleared up, and the scaling loss of commissure or residue are polished clean with coarse sandpaper;
(2) aqueous anticorrosion paint is prepared;
(3) painting environment: the base material temperature flowing adopting preheating, is formed and circulate air, improve temperature, reduce humidity, reach the temperature of coating specification, humidity;
(4) coating process: adopt coating equipment to carry out application according to following process sequence: first application vehicle bottom, then application vehicle body, last application car body is outside, the application order of car body is first vehicle body upper portion aftercarriage bottom.
2. the technique of railway freight-car application aqueous anticorrosion paint according to claim 1, is characterized in that: the concrete steps of described (1) substrate surface treatment are:
Residue impurities after the burr, welding slag and the scaling loss that produce in a, first removing metal base process;
B, metallic substrate surface eliminate rust, and cleannes are to Sa2.5 level;
Metallic substrate surface after c, rust cleaning should remove descale, rust and dirt completely, and has certain roughness, then with dry compressed air or the cleaning of clean hairbrush, and removing sand grains, dust;
D, finally oil removing is carried out to metallic substrate surface, adopt neutral cleaners or organic solvent to clear up greasy dirt, until metallic substrate surface is without oil, dry, then japanning;
Described organic solvent is dimethylbenzene or butanols.
3. the technique of railway freight-car application aqueous anticorrosion paint according to claim 1, is characterized in that: the concrete steps of described (2) preparation aqueous anticorrosion paint are:
For the base material of carbon steel material, railway freight-car water-soluble paint priming paint and railway freight-car water-soluble paint finish paint supporting;
Water-soluble paint before using needs whole bucket paint electric stirring to stir, and then with clear water dilution, is adjusted to working viscosity, does not stay extension to be advisable to spray, and filters use with 80 eye mesh screens; During use air gun, viscosity is: be coated with 4# cup/55 second; Airless spray gun rotary viscosity is used to be 2.0Pas.
4. the technique of railway freight-car application aqueous anticorrosion paint according to claim 1, is characterized in that: the concrete steps of described (2) preparation aqueous anticorrosion paint are:
For the base material of stainless steel material, ethene improved phosphatization shop primer and railway freight-car water-soluble paint bottom surface are unified supporting;
Ethene improved phosphatization shop primer in proportion 1:4 interpolation curing agent stirs, and directly uses after filtering with 80 eye mesh screens;
Water soluble coating before using needs whole bucket paint electric stirring to stir, and then with clear water dilution, is adjusted to working viscosity, does not stay extension to be advisable to spray, and filters use with 80 eye mesh screens; During use air gun, viscosity is: be coated with 4# cup/55 second; Airless spray gun rotary viscosity is used to be 2.0Pas.
5. the technique of railway freight-car application aqueous anticorrosion paint according to claim 1, is characterized in that: described (3) painting environment is:
(1) storage temperature of water paint product is more than 5 DEG C;
(2) advise that painting environment temperature is for being not less than 10 DEG C;
(3) workpiece temperature that suggestion is coated is more than 10 DEG C;
(4) painting environment humidity requirement is less than 75%.
6. the technique of railway freight-car application aqueous anticorrosion paint according to claim 1, is characterized in that: described (4) coating equipment comprises any one in following equipment: (1) air gun: model W-71 or W-77, bore 1.2-2.0mm;
(2) airless spray gun: model XPQ-1 or XPQ-2 or XPQ-18, bore 2.0-3.5mm;
(3) airless sprayer: selection pressure is than any one in 35:1,45:1,65:1.
7. the technique of railway freight-car application aqueous anticorrosion paint according to claim 1, is characterized in that: the concrete steps of described (4) coating process are:
(1) when carrying out application, spray gun should keep the angle of 35 ~ 40 ° at the uniform velocity to spray with ground, and rifle, apart from being 35cm ~ 40cm, being repaired drain spray position after application completes, can be used spray gun or brushing, spray gun can not be used to carry out partial points spray;
(2) according to above-mentioned steps even application 2 times, and once spray build and be no more than 30 μm;
(3) application order is: 1. underframe; 2. in car body: first vehicle body upper portion, aftercarriage bottom; 3. outside car body: first vehicle body upper portion, aftercarriage bottom.
8. the technique of railway freight-car application aqueous anticorrosion paint according to claim 1, is characterized in that: the construction environment of described (4) coating process is:
(1) construct under normal condition:
1. when environment temperature is not less than 10 DEG C, direct spraying after removing surface completes, takes natural drying or toasts as required after spraying, dries 50min at 50 DEG C;
If 2. spraying operation runs into dust and sand weather, should construct in the environment of relative closure;
3. when relative humidity is greater than 75%, first preheating is carried out to workpiece, dry 40min at 55 DEG C;
(2) winter temperature is greater than 75% construction lower than 10 DEG C of constructions or rainy day humidity:
1. need before application to carry out 60min preheating in the drying room more than 50 DEG C, to ensure that application temperature meets execution conditions, temperature is not less than 10 DEG C, carries out baking immediately dry after application;
2. rainy day humidity is comparatively large, open cycle blower fan, accelerates air flow rate, suitably reduces humidity;
Need in the transportation of 3. painting to adopt Insulation, ensure that environment temperature is not less than 5 DEG C;
4. paint storehouse and paint room need to take heating measure, ensure that indoor temperature is not less than 10 DEG C.
9. the technique of railway freight-car application aqueous anticorrosion paint according to claim 1, is characterized in that: described (4) coating process is: for the base material of carbon steel material,
A, first prepare aqueous anticorrosion paint, priming paint finish paint is supporting;
After b, metallic substrate surface are disposed, spraying railway freight-car water-soluble paint priming paint;
C, railway freight-car after dry 60min, then spray railway freight-car water-soluble paint finish paint with water-soluble paint priming paint;
When d, spraying railway freight-car are with water-soluble paint finish paint, thoroughly to eliminate grease, dust foreign material that upper track paint brings due to other operation surfaces.
10. the technique of railway freight-car application aqueous anticorrosion paint according to claim 1, is characterized in that: described (4) coating process is: for the base material of stainless steel material,
A, first prepare aqueous anticorrosion paint, priming paint finish paint bottom surface is unified;
After b, metallic substrate surface are disposed, spray ethene improved phosphatization shop primer, build is 20 μm;
From dry 1h after the spraying of c, ethene improved phosphatization shop primer, the unification of railway freight-car water-soluble paint bottom surface can be sprayed;
When d, spraying railway freight-car are unified with water-soluble paint bottom surface, thoroughly to eliminate grease, dust foreign material that upper track paint brings due to other operation surfaces.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106311580A (en) * 2016-08-16 2017-01-11 天津中德工程设计有限公司 Modified aqueous paint coating process for oil tank for petroleum cave depot/earthing storeroom
CN109606402A (en) * 2018-12-11 2019-04-12 通号轨道车辆有限公司 A kind of rail vehicle carbon steel vehicle anticorrosion process and car body
CN110064580A (en) * 2019-04-26 2019-07-30 淄博纳银新材料科技有限公司 A kind of means of defence of metal surface

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CN102794257A (en) * 2012-08-16 2012-11-28 南车长江车辆有限公司 Water-based paint coating process for stainless steel rail wagon
CN103586190A (en) * 2013-10-09 2014-02-19 芜湖中集瑞江汽车有限公司 Aluminum alloy refueling truck coating process

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102794257A (en) * 2012-08-16 2012-11-28 南车长江车辆有限公司 Water-based paint coating process for stainless steel rail wagon
CN103586190A (en) * 2013-10-09 2014-02-19 芜湖中集瑞江汽车有限公司 Aluminum alloy refueling truck coating process

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106311580A (en) * 2016-08-16 2017-01-11 天津中德工程设计有限公司 Modified aqueous paint coating process for oil tank for petroleum cave depot/earthing storeroom
CN109606402A (en) * 2018-12-11 2019-04-12 通号轨道车辆有限公司 A kind of rail vehicle carbon steel vehicle anticorrosion process and car body
CN110064580A (en) * 2019-04-26 2019-07-30 淄博纳银新材料科技有限公司 A kind of means of defence of metal surface
CN110064580B (en) * 2019-04-26 2021-11-30 淄博纳银新材料科技有限公司 Protection method for metal surface

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