CN104289406B - The technique of railway freight-car application aqueous anticorrosion paint - Google Patents
The technique of railway freight-car application aqueous anticorrosion paint Download PDFInfo
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Abstract
The technique that the invention discloses a kind of railway freight-car application aqueous anticorrosion paint, belongs to coating process technical field.Including (1) substrate surface treatment；(2) preparation aqueous anticorrosion paint；(3) painting environment；(4) coating process；Four partial contents.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 to have formulated aqueous anticorrosion paint auxiliary plan and the technique of applicable application railway freight-car application, reach the requirement of railway freight-car application aqueous anticorrosion paint, solve the construction problem of railway freight-car application aqueous anticorrosion paint, it is ensured that railway freight-car coating quality.
Description
Technical field
The technique that the present invention relates to a kind of railway freight-car application aqueous anticorrosion paint, belongs 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 comply with modern aqueous anticorrosion paint coating specification, during particularly with aqueous anticorrosion paint application, existing technique cannot meet coating specification and coating quality, the most apparent problem: be exactly paint film extensive blistering after application, come off, the serious quality problems because coating process causes such as get rusty.
Summary of the invention
It is desirable to provide the technique of a kind of railway freight-car application aqueous anticorrosion paint, paint film extensive blistering after solving water paint application, come off, the serious quality problems because coating process causes such as get rusty.
The technique of a kind of railway freight-car application aqueous anticorrosion paint provided by the invention, including herein below:
1, substrate surface treatment: innovate for existing technique deficiency, the processing method of base material, requirement there is clear and definite implementing method, especially the oily waste treatment on base material, requirement neutral cleaners (market is purchased) or organic solvent (dimethylbenzene, butanol) are cleared up, the scaling loss of commissure or residue are clean with coarse sandpaper polishing, as cleaning is unclean, easily cause paint film and base material " double-layer fur " phenomenon after application, very easily cause foaming, come off, affect coating quality；
Concretely comprising the following steps of substrate surface treatment:
Residue impurities after burr, welding slag and scaling loss produced by a, first the removing metal base course of processing；
B, metallic substrate surface eliminate rust, and cleannes are to Sa2.5 level；
Metallic substrate surface after c, rust cleaning should completely remove oxide skin, rust and dirt, and has certain roughness, then with dry compression air or the cleaning of clean hairbrush, removes sand grains, dust；
D, finally metallic substrate surface is carried out oil removing, adopt neutral cleaners or organic solvent to clear up greasy dirt, until metallic substrate surface oil-free, dry, then japanning；
Described neutral cleaners, such as Xiang mound, Shanghai XL-108 steel construction industrial cleaning agent or Xi'an Lan Dao LAN-708 steel construction industrial cleaning agent.
2, preparation aqueous anticorrosion paint；
Concretely comprise the following steps:
(1) for the base material of carbon steel material, railway freight-car water-soluble paint priming paint is supporting with railway freight-car water-soluble paint finish paint；
Water-soluble paint needs to stir whole bucket paint electric stirring before using, and then dilutes with clear water, is adjusted to working viscosity, does not stay extension to be advisable with spraying, filters with 80 eye mesh screens and uses；During use air gun, viscosity is: be coated with 4# cup/55 second；Using airless spray gun rotary viscosity is 2.0Pa s.
(2) for the base material of stainless steel material, ethene improved phosphatization shop primer is supporting with the unification of railway freight-car water-soluble paint bottom surface；
Ethene improved phosphatization shop primer 1:4 in proportion adds firming agent and stirs, and directly uses after filtering with 80 eye mesh screens；
Water soluble coating needs to stir whole bucket paint electric stirring before using, and then dilutes with clear water, is adjusted to working viscosity, does not stay extension to be advisable with spraying, filters with 80 eye mesh screens and uses；During use air gun, viscosity is: be coated with 4# cup/55 second；Using airless spray gun rotary viscosity is 2.0Pa s.
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 conditions are not suitable for, as: temperature, humidity, when temperature is low or during high humidity, just cannot operation, we have employed in this respect preheating base material temperature flowing, formed 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) suggestion 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 dry rate of aqueous anticorrosion paint, aqueous anticorrosion paint fast drying, as pressed below existing technique elder generation vehicle body 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 easy to fall off, affect product quality, we have also formulated strict coating process order in this respect: first application vehicle bottom, then application vehicle body, outside last application car body, 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 includes 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；
Concretely comprising the following steps of described coating process:
(1) when carrying out application, spray gun should keep 35 ~ 40 ° at the uniform velocity to spray with ground, and rifle is from for 35cm ~ 40cm, and drain spray position is repaired after completing by application, can use spray gun or brushing, it is impossible to uses spray gun to carry out partial points spray；
(2) according to above-mentioned steps even application 2 times, and once spraying build less 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 ambient temperature is not less than 10 DEG C, removing surface complete after direct spraying, take natural drying after spraying or toast as required, 50 DEG C dry 50min；
If 2. spraying operation runs into dust and sand weather, it should construct in the environment of relative closure；
3. when relative humidity is more than 75%, first workpiece is preheated, dry 40min at 55 DEG C；
(2) winter temperature is constructed more than 75% lower than 10 DEG C of constructions or rainy day humidity:
1. needing 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 relatively big, open cycle blower fan, accelerates air flow rate, suitably reduces humidity；
3. the transportation painted needs adopt Insulation, it is ensured that environment temperature is not less than 5 DEG C；
4. paint storehouse and paint room need to take heating measure, it is ensured that indoor temperature is not less than 10 DEG C.
Further, for the base material of carbon steel material, coating process is:
A, first preparing aqueous anticorrosion paint, priming paint finish paint is supporting；
After b, metallic substrate surface are disposed, spray 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, to thoroughly eliminate oils and fats, 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 preparing aqueous anticorrosion paint, priming paint finish paint bottom surface is unified；
After b, metallic substrate surface are disposed, spraying 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, to thoroughly eliminate oils and fats, 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 set 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 reached supporting requirement.
Beneficial effects of the present invention:
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 to have formulated aqueous anticorrosion paint auxiliary plan and the technique of applicable application railway freight-car application, reach the requirement of railway freight-car application aqueous anticorrosion paint, solve the construction problem of railway freight-car application aqueous anticorrosion paint, it is ensured that the quality of application aqueous anticorrosion paint.
Detailed description of the invention
Further illustrate the present invention by the examples below, but be not limited to following example.
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 scaling loss produced by the metal base course of processing 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 completely remove oxide skin, rust and dirt, and has certain roughness, then with dry compression air or the cleaning of clean hairbrush, removes sand grains, dust.
4, finally metallic substrate surface is carried out oil removing, adopt neutral cleaners or special organic solvent (dimethylbenzene, butanol) to clear up greasy dirt, until metallic substrate surface oil-free, 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).
4, when spraying railway freight-car is with water-soluble paint (finish paint), the foreign material such as oils and fats, dust that upper track paint brings to thoroughly be eliminated due to other operation surfaces.
Three, painting environment
1, product storage temperature: more than 5 DEG C
2, suggestion painting environment temperature: more than 15 DEG C；Minimum painting environment temperature: 10 DEG C
3, suggestion workpiece temperature: 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-1XPQ-2XPQ-18 bore 2.0-3.5mm
3, airless sprayer: pressure ratio 35:1,45:1,65:1
Adopt any one in apparatus above.
Five, cleaning equipment
The cleaning of oil paint switching water soluble coating spraying equipment:
1, paint (former pipeline makes the diluent painted) in diluent flushing pipe is painted.
2, use 1#(acetone again) scavenger specially, 2#(butyl glycol ether) scavenger specially rinse.
3, finally with the clear water of about 10kg, scavenger specially is rinsed well, clean to there is no oil bloom, water-soluble paint can be sprayed.
4, illustrate
It is 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 with dimethylbenzene and 200# solvent naphtha flushing pipe and equipment, rinse to rinse solvent as clear as crystal, consumption is about 5kg, then use 1#(acetone) scavenger specially clean transparent, consumption is about 2kg, use 2#(butyl glycol ether again) scavenger specially cleans 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.
It is 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 butanol, before conversion water paint, pipeline and equipment first it is carried out with dimethylbenzene and butanol, rinse to rinse solvent as clear as crystal, consumption is about 5kg, then use 1#(acetone) scavenger specially clean transparent, consumption is about 3kg, use 2#(butyl glycol ether again) scavenger specially cleans 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 makes to be finished, 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 cleans to transparent, finally rinses one time with the diluent of the oil paint to use again, and namely completes the cleaning of water paint conversion oil paint.
Six, paint method
Water soluble coating needs to stir whole bucket paint electric stirring before using, and then dilutes with clear water, is adjusted to working viscosity (adjusting viscosity according to site environment situation, spraying does not stay extension to be advisable), filters with 80 order nets and use.Air gun (is coated with 4# cup/55 second), airless spray gun (rotary viscosity/2.0Pa s)
Seven, coating process
When carrying out application, spray gun should keep 35 ~ 40 ° at the uniform velocity to spray with ground.Drain spray position is repaired after completing by application, can use spray gun or brushing, it is impossible to use spray gun to carry out partial points spray, it is prevented that coating cloud disperses, and causes coating surface coarse, affects appearance of film quality.
1, rifle is from about 35cm
2, even application 2 times
3, build is once sprayed less 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 ambient temperature is not less than 10 DEG C, removing surface complete after direct spraying, can natural drying after spraying；Toasting also dependent on needs, 50 DEG C are dried 50min.
If 2. spraying operation runs into dust and sand weather, it should construct in the environment of relative closure.
3. when relative humidity is more than 75%, workpiece can be preheated, about 55 DEG C, dry 40min.
2, winter construction (temperature is lower than 10 DEG C) or rainy day construction (humidity is more than 75%)
1. needing 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 relatively big, open cycle blower fan, accelerates air flow rate, suitably reduces humidity.
3. the transportation painted needs adopt Insulation, it is ensured that environment temperature is not less than 5 DEG C.
4. paint storehouse and paint room need to take heating measure, it is ensured 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 with skin and eyes, once occur to rinse with a large amount of clear water in time.
3, this product is water soluble coating, to carry out the Insulation stored and in transport winter, and 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 scaling loss produced by the metal base course of processing 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 completely remove oxide skin, rust and dirt, and has certain roughness, then with dry compression air or the cleaning of clean hairbrush, removes sand grains, dust；
4, finally metallic substrate surface is carried out oil removing, adopt neutral cleaners or special organic solvent (dimethylbenzene, butanol) to clear up greasy dirt, until metallic substrate surface oil-free, 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 is supporting with railway freight-car water-soluble paint (bottom surface unification)；
2, after metallic substrate surface is disposed, spraying ethene improved phosphatization shop primer, build is 20 μm；
3, from dry 1h after the spraying of ethene improved phosphatization shop primer, railway freight-car water-soluble paint (bottom surface unification) can be sprayed；4, when spraying railway freight-car is with water-soluble paint (bottom surface unification), the foreign material such as oils and fats, dust that upper track paint brings to thoroughly be eliminated due to other operation surfaces.
Three, painting environment
1, product storage temperature: more than 5 DEG C
2, suggestion painting environment temperature: more than 15 DEG C；Minimum painting environment temperature: 10 DEG C
3, suggestion workpiece temperature: 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-1XPQ-2XPQ-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
The cleaning of paint switching water soluble coating spraying equipment:
1, paint (former pipeline makes the diluent painted) in diluent flushing pipe is painted；
2, use 1#(acetone again) scavenger specially, 2#(butyl glycol ether) scavenger specially rinse；
3, finally with the clear water of about 10kg, scavenger specially is rinsed, clean to there is no oil bloom, water-soluble paint can be sprayed；
4, illustrate
It is 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 with dimethylbenzene and 200# solvent naphtha flushing pipe and equipment, rinse to rinse solvent as clear as crystal, consumption is about 5kg, then use 1#(acetone) scavenger specially clean transparent, consumption is about 2kg, use 2#(butyl glycol ether again) scavenger specially cleans 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.
It is 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 butanol, before conversion water paint, pipeline and equipment first it is carried out with dimethylbenzene and butanol, rinse to rinse solvent as clear as crystal, consumption is about 5kg, then use 1#(acetone) scavenger specially clean transparent, consumption is about 3kg, use 2#(butyl glycol ether again) scavenger specially cleans 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 soluble coating switching paint spraying equipment:
1, with water-soluble paint in clear water flushing pipe；
2, with 2# scavenger specially, the water rinsing residual again with 1# scavenger specially；
3, finally paint diluent to rinse, to there is no moisture, water-soluble paint can be sprayed；
4, citing: water paint conversion oil paint
After water paint makes to be finished, 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 cleans to transparent, finally rinses one time with the diluent of the oil paint to use again, and namely completes the cleaning of water paint conversion oil paint.
Six, paint method
1, ethene improved phosphatization shop primer needs (1:4) to scale to add firming agent and stir, and directly uses with after 80 order nets filtrations.
2, water soluble coating needs to stir whole bucket paint electric stirring before using, and then dilutes with clear water, is adjusted to working viscosity (adjusting viscosity according to site environment situation, spraying does not stay extension to be advisable), filters with 80 order nets and use.Air gun (is coated with 4# cup/55 second), airless spray gun (rotary viscosity/2.0Pa s).
Seven, coating process
When carrying out application, spray gun should keep 35 ~ 40 ° at the uniform velocity to spray in ground.Drain spray position is repaired after completing by application, can use spray gun or brushing, it is impossible to use spray gun to carry out partial points spray, it is prevented that coating cloud disperses, and causes coating surface coarse, affects appearance of film quality.
1, rifle is from about 35cm
2, even application 2 times
3, build is once sprayed less 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 ambient temperature is not less than 10 DEG C, removing surface complete after direct spraying, can natural drying after spraying；Toasting also dependent on needs, 50 DEG C are dried 50min；
If 2. spraying operation runs into dust and sand weather, it should construct in the environment of relative closure；
3. when relative humidity is more than 75%, workpiece can be preheated, about 55 DEG C, dry 40min；
2, winter construction (temperature is lower than 10 DEG C) or rainy day construction (humidity is more than 75%)
1. needing 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 relatively big, open cycle blower fan, accelerates air flow rate, suitably reduces humidity；
3. the transportation painted needs adopt Insulation, it is ensured that environment temperature is not less than 5 DEG C；
4. paint storehouse and paint room need to take heating measure, it is ensured 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 with skin and eyes, once occur to rinse with a large amount of clear water in time；
3, this product is water soluble coating, to carry out the Insulation stored and in transport winter, and temperature is not less than 5 DEG C.
Claims (5)
1. the technique of railway freight-car application aqueous anticorrosion paint, it is characterised in that: include herein below:
(1) substrate surface treatment: the greasy dirt on base material, it is desirable to clear up with neutral cleaners or organic solvent, the scaling loss of commissure or residue are clean with coarse sandpaper polishing；
(2) preparation aqueous anticorrosion paint；
Concretely comprise the following steps:
1. for the base material of carbon steel material, railway freight-car water-soluble paint priming paint is supporting with railway freight-car water-soluble paint finish paint；
Water-soluble paint needs to stir whole bucket paint electric stirring before using, and then dilutes with clear water, is adjusted to working viscosity, does not stay extension to be advisable with spraying, filters with 80 eye mesh screens and uses；During use air gun, viscosity is: be coated with 4# cup/55 second；Using airless spray gun rotary viscosity is 2.0Pa s；
2. for the base material of stainless steel material, ethene improved phosphatization shop primer is supporting with the unification of railway freight-car water-soluble paint bottom surface；
Ethene improved phosphatization shop primer 1:4 in proportion adds firming agent and stirs, and directly uses after filtering with 80 eye mesh screens；
Water soluble coating needs to stir whole bucket paint electric stirring before using, and then dilutes with clear water, is adjusted to working viscosity, does not stay extension to be advisable with spraying, filters with 80 eye mesh screens and uses；During use air gun, viscosity is: be coated with 4# cup/55 second；Using airless spray gun rotary viscosity is 2.0Pa s；
(3) painting environment: adopt the base material temperature flowing of preheating, 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, outside last application car body, 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, it is characterised in that: concretely comprising the following steps of described (1) substrate surface treatment:
Residue impurities after burr, welding slag and scaling loss produced by a, first the removing metal base course of processing；
B, metallic substrate surface eliminate rust, and cleannes are to Sa2.5 level；
Metallic substrate surface after c, rust cleaning should completely remove oxide skin, rust and dirt, and has certain roughness, then with dry compression air or the cleaning of clean hairbrush, removes sand grains, dust；
D, finally metallic substrate surface is carried out oil removing, adopt neutral cleaners or organic solvent to clear up greasy dirt, until metallic substrate surface oil-free, dry, then japanning；
Described organic solvent is dimethylbenzene or butanol.
3. the technique of railway freight-car application aqueous anticorrosion paint according to claim 1, it is characterised in that: described (3) painting environment is:
A, water paint product storage temperature be more than 5 DEG C；
B, suggestion painting environment temperature are for being not less than 10 DEG C；
The workpiece temperature that c, suggestion are coated is more than 10 DEG C；
D, painting environment humidity requirement are less than 75%.
4. the technique of railway freight-car application aqueous anticorrosion paint according to claim 1, it is characterised in that: concretely comprising the following steps of described (4) coating process:
A, when carrying out application, spray gun should keep the angle of 35 ~ 40 ° at the uniform velocity to spray with ground, and rifle is from for 35cm ~ 40cm, and drain spray position is repaired after completing by application, can use spray gun or brushing, it is impossible to uses spray gun to carry out partial points spray；
B, according to above-mentioned steps even application 2 times, and once spraying build less than 30 μm；
C, application order be: 1. underframe；2. in car body: first vehicle body upper portion, aftercarriage bottom；3. outside car body: first vehicle body upper portion, aftercarriage bottom.
5. the technique of railway freight-car application aqueous anticorrosion paint according to claim 1, it is characterised in that: the construction environment of described (4) coating process is:
Construct under a, normal condition:
1. when ambient temperature is not less than 10 DEG C, removing surface complete after direct spraying, take natural drying after spraying or toast as required, 50 DEG C dry 50min；
If 2. spraying operation runs into dust and sand weather, it should construct in the environment of relative closure；
3. when relative humidity is more than 75%, first workpiece is preheated, dry 40min at 55 DEG C；
B, winter temperature are constructed more than 75% lower than 10 DEG C of constructions or rainy day humidity:
1. needing 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 relatively big, open cycle blower fan, accelerates air flow rate, suitably reduces humidity；
3. the transportation painted needs adopt Insulation, it is ensured that environment temperature is not less than 5 DEG C；
4. paint storehouse and paint room need to take heating measure, it is ensured that indoor temperature is not less than 10 DEG C.
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| 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 |
| CN109606402B (en) * | 2018-12-11 | 2020-06-02 | 通号轨道车辆有限公司 | Rail vehicle carbon steel vehicle body anticorrosion technology and vehicle body |
| 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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|---|---|---|---|---|
| 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 |
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2014
- 2014-10-27 CN CN201410580820.2A patent/CN104289406B/en active Active
Patent Citations (2)
| 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 |
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