CN105013685A - Automobile bumper spraying process - Google Patents
Automobile bumper spraying process Download PDFInfo
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- CN105013685A CN105013685A CN201510496531.9A CN201510496531A CN105013685A CN 105013685 A CN105013685 A CN 105013685A CN 201510496531 A CN201510496531 A CN 201510496531A CN 105013685 A CN105013685 A CN 105013685A
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Abstract
The invention discloses an automobile bumper spraying process. The automobile bumper spraying process includes the specific processes of workpiece transfer, shielding, piece feeding, surface wiping, workpiece grinding, electrostatic dust removal on primer, primer spraying, primer airing, primer grinding, electrostatic dust removal on colored paint, colored paint spraying, colored paint airing, varnish spraying, varnish airing, drying, forced cooling, ornamenting and grinding, ornamenting and polishing, checkout and storage. By controlling parameters and operation of all procedures, the surface quality of a sprayed automobile bumper can be high, a film face where colored paint is sprayed is smooth, high in brightness, uniform in film face, capable of reaching the preset color and luster degree and not prone to color fading, and the product quality of the bumper can be ensured.
Description
Technical field
The present invention relates to the spraying technology of bumper, be specifically related to automobile bumper coating technique.
Background technology
The production technology of bumper disclosed in prior art, merely discloses the spraying process of bumper, and does not make exhaustive inquiries to the problem that each operation and each operation of bumper should be noted that and illustrate; Uneven according to the bumper product surface spray coating quality that existing spraying technology is produced, affect the quality of product.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide and by the strict control of each operation, the automobile bumper coating technique of product surface quality and product quality can be ensured.
To achieve these goals, the technical solution used in the present invention is:
Automobile bumper coating technique, concrete technology is: workpiece transports-covers-upper part-surface wipes-grinding workpieces-priming paint electrostatic precipitation-basecoat paint-priming paint dries-priming paint polishing-colored paint electrostatic precipitation-colored paint spraying-colored paint dries-varnish spraying-varnish dries-dry-by force cold-modification to polish-modification polishing-inspection-warehouse-in.
Workpiece transhipment operation: be put into by workpiece on transport carriage and be firmly linked with, part of damaging is drawn in isolation, draws part sand paper of damaging and carries out grinding process, proceed to next procedure after all workpiece are qualified;
Cover operation: workpiece is put into and covers on platform, check whether surface quality meets the requirements, do not need the part sprayed to use adhesive plaster to cover to satisfactory workpiece;
Upper operation: all use flexible package to wrap up the interferences of working region, is suspended to the workpiece covered on another transport carriage and turns linked to firmly; To drawing part isolation of damaging, carrying out grinding process with sand paper, after all workpiece are qualified, proceeding to next procedure;
Surface wipes operation: adopt gauze to carry out wiping to covering surface, wipe covering surface dirt;
Grinding workpieces operation: surface of the work is polished;
Priming paint electrostatic precipitation operation: open the electrostatic generator that priming paint blows off room, opens compressed air air valve, and workpiece enters after priming paint blows off room, and after checking workpiece surface quality, dress is firmly linked with solid; Open and blow off rifle, blow off the foreign material of surface of the work with nozzle;
Basecoat paint operation: spray paint indoor temperature, humidity and cleanliness factor of priming paint controls to setting value;
Adjustment spraying painting pressure and compressed air pressure, use spray gun to spray;
Priming paint film thickness is 10 ~ 15um, detects after spraying with film thickness gauge;
Priming paint dries operation: the workpiece after spray-applied primer enters priming paint and dries indoor, and control priming paint and dry indoor temperature and humidity, flash-off time is 8 minutes;
Priming paint polishing operation: the workpiece sprayed after drying enters in priming paint grinding chamber polishes;
Colored paint electrostatic precipitation operation: open the electrostatic generator that colored paint blows off room, opens compressed air air valve, and workpiece enters after colored paint blows off room, and after checking workpiece surface quality, dress is firmly linked with solid; Open and blow off rifle, blow off the foreign material of surface of the work with nozzle;
Colored paint spraying process: spray paint indoor temperature, humidity and cleanliness factor of colored paint controls to setting value;
Adjustment spraying painting pressure and compressed air pressure, use spray gun to spray;
Metallic paint film thickness is 12 ~ 20um, and this colored paint film thickness is 20 ~ 35um, detects after spraying with film thickness gauge;
Colored paint dries operation: the workpiece after colored paint spraying enters colored paint and dries indoor, and control colored paint and dry indoor humidity and temperature, flash-off time is 10 minutes;
Varnish spraying process: spray paint indoor temperature, humidity and cleanliness factor of varnish controls to setting value;
Adjustment varnish spraying painting pressure and compressed air pressure, use spray gun to spray;
Varnish film thickness 30 ~ 40um, detects with film thickness gauge after spraying;
Varnish dries operation: the workpiece after varnish spraying enters varnish and dries room, and control varnish and dry indoor temperature and humidity, flash-off time is 13 minutes;
Baking operation: the workpiece after varnish dries enters drying chamber, during oven dry, workpiece temperature is 80 ± 5 DEG C, and measurement per hour is once; Drying time is 40 minutes;
Strong cooling working procedure: the workpiece after oven dry enters strong cold house, cooling air temperature 18 ~ 30 DEG C, strong cool time 5 minutes;
The workpiece modifying polishing operation: Qiang Lenghou enters between modification polishes;
Modify polishing process: the workpiece modified after polishing carries out surface finish;
Inspection process: use illuminating lamp, surface of the work is smooth, glossiness is consistent, is pieces O.K.;
Warehouse-in operation: the workpiece be up to the standards uses transport carriage to be transported to inventory area.
Described grinding workpieces operation, first uses damp sand paper to polish, then adopts dry sand paper to polish; Before grinding workpieces, sand paper soaks and becomes damp sand paper in more than 10 minutes, and during polishing, 3-5 opens damp sand quires and puts together, dips in water polishing, abandons after 3-5 workpiece of polish, and the replacing in 2 hours of use of polishing water once;
Use gauze by after the dust wiped clean of surface of the work, re-use dry sand papering;
Touched by hand under lighting apparatus, visual method checks workpiece quality, until surface of the work is without scuffing, cut, burr, overlap and sand holes.
In described priming paint painting process, colored paint spraying process and varnish spraying process, priming paint paint spray booth, colored paint spray booth and varnish spraying indoor temperature control at 18 ~ 35 DEG C, and detection per hour once; Relative humidity controls at 40 ~ 80 ℅, and detection per hour once; Air purity controls at the particulate being greater than 5um without particle diameter, and the particulate of below 5um often rises and is less than 100000, detects weekly once.
In described priming paint painting process, colored paint spraying process and varnish spraying process, priming paint sprays paint, colored paint sprays and varnish spraying adopts membrane pump, and membrane pump painting pressure is 0.20 ~ 0.40Mpa, within every 4 hours, detects once; Spraying compressed air pressure is 0.45 ~ 0.6Mpa, within every 4 hours, detects once.
In described priming paint painting process, colored paint spraying process and varnish spraying process, spray gun and workpiece distance remain on 150 ~ 250m, and spray gun covering of the fan is vertical with workpiece and run parallel, and the steady translational speed of spray gun is 30 ~ 60cm/s.
Described priming paint polishing operation, the workpiece priming paint part of spray light color topcoat is polished with 1000 object damp sand paper; The workpiece priming paint part spraying dark finish paint is polished with 800 object damp sand paper; If surface of the work scratches or distortion, first polish with 400 object damp sand paper, then carry out covering reparation polishing with 1000 object damp sand paper.
Described priming paint polishing operation, often opens 800 object damp sand paper and repairs 8-10 workpiece, often open 1000 object damp sand paper and repair 5-8 workpiece, often open 400 object damp sand paper and repair 10-15 workpiece; During polishing, 3-4 is opened damp sand quires to put away; Dip in water droplet during polishing at the surface of the work that will polish, finger closes up, pushes down sand paper do rotary-grinding on the surface of the workpiece with palm, and to burnishing part water filling while polishing, the water of polishing is changed once for 2 hours; During polishing from the close-by examples to those far off, a bit become sector shape to spread out by corner, until whole, will continue in bruting process to remove polishing ash; After polishing terminates, wipe clean polishing water and the polishing ash of workpiece surfaces externally and internally.
Described priming paint dries operation, described colored paint dries operation and described varnish dries in operation, and priming paint dries room, colored paint dries room and varnish dries indoor temperature and controls at 18 ~ 35 DEG C, and detection per hour once; Priming paint dries indoor relative humidity and controls at 40 ~ 80 ℅, and detection per hour once.
Described modification polishing operation, the workpiece of Qiang Lenghou enters between modification, and use sander to polish, coating surface is smooth, and sander sand paper can not lower than 1200 orders.
The invention has the advantages that: automobile bumper coating technique, by transporting workpiece-cover-upper part-surface wipes-grinding workpieces-priming paint electrostatic precipitation-basecoat paint-priming paint dries-priming paint polishing-colored paint electrostatic precipitation-colored paint spraying-colored paint dries-varnish spraying-varnish dries-dry-by force cold-modification polish-parameter of each operation of modification polishing-check-put in storage and operation strictly control, make to spray the bumper surface quality obtained high, the paint film face of color spray is smooth, brightness is high, face is even, predetermined color can be reached, and be not easy to fade, can guarantee insurance thick stick surface quality and product quality.
Detailed description of the invention
Below by the description to optimum embodiment, the specific embodiment of the present invention is described in further detail.
Automobile bumper coating technique, concrete technology is: workpiece transports-covers-upper part-surface wipes-grinding workpieces-priming paint electrostatic precipitation-basecoat paint-priming paint dries-priming paint polishing-colored paint electrostatic precipitation-colored paint spraying-colored paint dries-varnish spraying-varnish dries-dry-by force cold-modification to polish-modification polishing-inspection-warehouse-in.
Workpiece transhipment operation: workpiece is put on transport carriage and is firmly linked with, forbid between workpiece and collide between workpiece and other objects, do not allow to scratch and damage, undesirablely again fill extension, draw part isolation of damaging, draw part sand paper of damaging and carry out grinding process, after all workpiece are qualified, proceed to next procedure, underproofly to return;
Cover operation: workpiece takes off from running shelf, is put into and covers on platform, check whether surface quality meets the requirements, surface of the work meets the requirements without scuffing, wire drawing, does not then need the part adhesive plaster sprayed to cover to all qualified workpiece; Requirement position is accurate, compacting, and crested face, without leakage, seamless, subsides jail, does not allow thoroughly to paint during spraying;
Upper operation: before upper part, all use flexible package to wrap up the interferences of working region;
Be suspended to by the workpiece covered on transport carriage and turn linked to firmly, require that covering surface is without scratching, after drawing part isolation of damaging, carry out grinding process with sand paper, proceed to next procedure after all workpiece are qualified, reluctant is judged whether to scrap by Quality Inspector;
Surface wipes operation: adopt gauze to carry out wiping to covering surface, wipe covering surface dirt;
Grinding workpieces operation: to surface of the work polishing, grinding workpieces rear surface is smooth, smooth;
Priming paint electrostatic precipitation operation: open the electrostatic generator that priming paint blows off room, opens compressed air air valve, and workpiece enters after priming paint blows off room, and after checking workpiece surface quality, dress is firmly linked with solid; Open and blow off rifle, blow off the foreign material of surface of the work with nozzle, foreign material mainly contain dust and fiber etc.;
Basecoat paint operation: spray paint indoor temperature, humidity and cleanliness factor of priming paint controls to setting value;
Adjustment spraying painting pressure and compressed air pressure, use spray gun to spray;
Priming paint film thickness is 10 ~ 15um, detects after spraying with film thickness gauge;
Priming paint dries operation: the workpiece after spray-applied primer enters priming paint and dries indoor, and control priming paint and dry indoor temperature and humidity, flash-off time is 8 minutes;
Priming paint polishing operation: the workpiece sprayed after drying enters in priming paint grinding chamber polishes;
Colored paint electrostatic precipitation operation: open the electrostatic generator that colored paint blows off room, opens compressed air air valve, and workpiece enters after colored paint blows off room, and after checking workpiece surface quality, dress is firmly linked with solid; Open and blow off rifle, blow off the foreign material of surface of the work with nozzle, foreign material mainly contain dust and fiber etc.;
Colored paint spraying process: spray paint indoor temperature, humidity and cleanliness factor of colored paint controls to setting value;
Adjustment spraying painting pressure and compressed air pressure, use spray gun to spray;
Metallic paint film thickness is 12 ~ 20um, and this colored paint film thickness is 20 ~ 35um, detects after spraying with film thickness gauge;
Colored paint dries operation: the workpiece after colored paint spraying enters colored paint and dries indoor, and control colored paint and dry indoor humidity and temperature, flash-off time is 10 minutes;
Varnish spraying process: spray paint indoor temperature, humidity and cleanliness factor of varnish controls to setting value;
Adjustment varnish spraying painting pressure and compressed air pressure, use spray gun to spray;
Varnish film thickness 30 ~ 40um, detects with film thickness gauge after spraying;
Varnish dries operation: the workpiece after varnish spraying enters varnish and dries room, and control varnish and dry indoor temperature and humidity, flash-off time is 13 minutes;
Baking operation: the workpiece after varnish dries enters drying chamber, during oven dry, workpiece temperature is 80 ± 5 DEG C, and measurement per hour is once; Drying time is 40 minutes;
Strong cooling working procedure: the workpiece after oven dry enters strong cold house, cooling air temperature 18 ~ 30 DEG C, strong cool time 5 minutes;
The workpiece modifying polishing operation: Qiang Lenghou enters between modification polishes, and after polishing, workpiece coating surface is smooth;
Modify polishing process: the workpiece modified after polishing carries out surface finish, and after polishing, workpiece paint film is smooth, bright;
Inspection process: use illuminating lamp, surface of the work is smooth, glossiness is consistent, is pieces O.K.;
Warehouse-in operation: the workpiece be up to the standards uses transport carriage to be transported to inventory area.
Grinding workpieces operation, first uses damp sand paper to polish, then adopts dry sand paper to polish; Before grinding workpieces, sand paper soaks and becomes damp sand paper in more than 10 minutes, and during polishing, 3-5 opens damp sand quires and puts together, dips in water polishing, and polishing adopts circle polishing mode, abandons damp sand paper after 3-5 workpiece of polish, and the replacing in 2 hours of use of polishing water once;
Use gauze by after the dust wiped clean of surface of the work, re-use dry sand papering;
Touched by hand under lighting apparatus, visual method checks workpiece quality, until surface of the work is without scuffing, cut, burr, overlap and sand holes.
In described priming paint painting process, colored paint spraying process and varnish spraying process, priming paint paint spray booth, colored paint spray booth and varnish spraying indoor temperature control at 18 ~ 35 DEG C, and detect with thermometer, detection per hour once; Relative humidity controls at 40 ~ 80 ℅, and detect with hygrometer, detection per hour once; Air purity controls at the particulate being greater than 5um without particle diameter, and the particulate of below 5um often rises and is less than 100000, detects weekly once.
In described priming paint painting process, colored paint spraying process and varnish spraying process, priming paint sprays paint, colored paint sprays and varnish spraying adopts membrane pump, and membrane pump painting pressure is 0.20 ~ 0.40Mpa, within every 4 hours, detects once; Spraying compressed air pressure is 0.45 ~ 0.6Mpa, within every 4 hours, detects once.
In described priming paint painting process, colored paint spraying process and varnish spraying process, spray gun and workpiece distance remain on 150 ~ 250m, and hypotelorism may cause paint film sagging, tangerine peel, prickly heat etc., cross and far may cause that paint film paints less, orange peel; Spray gun covering of the fan is vertical with workpiece and run parallel, and the steady translational speed of spray gun is 30 ~ 60cm/s.The spray gun speed of service is excessively slow, then easily produce sagging, too fast, is difficult to obtain level and smooth paint film.
Described priming paint polishing operation, the workpiece priming paint part of spray light color topcoat is polished with 1000 object damp sand paper; The workpiece priming paint part spraying dark finish paint is polished with 800 object damp sand paper; If surface of the work scratches or distortion, first polish with 400 object damp sand paper, then carry out covering reparation polishing with 1000 object damp sand paper.
Described priming paint polishing operation, often opens 800 object damp sand paper and repairs 8-10 workpiece, often open 1000 object damp sand paper and repair 5-8 workpiece, often open 400 object damp sand paper and repair 10-15 workpiece; During polishing, 3-4 is opened sand paper to stack; Dip in water droplet during polishing at the surface of the work that will polish, finger closes up, pushes down sand paper do rotary-grinding on the surface of the workpiece with palm, and to burnishing part water filling while polishing, the water of polishing is changed once for 2 hours; During polishing from the close-by examples to those far off, a bit become sector shape to spread out by corner, until whole, will continue in bruting process to remove polishing ash; After polishing terminates, wipe clean polishing water and the polishing ash of workpiece surfaces externally and internally.
Described priming paint dries operation, described colored paint dries operation and described varnish dries in operation, and priming paint dries room, colored paint dries room and varnish dries indoor temperature and controls at 18 ~ 35 DEG C, and detect with thermometer, detection per hour once; Priming paint dries indoor relative humidity and controls at 40 ~ 80 ℅, and detect with thermometer, detection per hour once; By the control of temperature and humidity, make the spraying of basecoat paint, colored paint and varnish spraying have better effect, workpiece surface quality is good.
Described modification polishing operation, the workpiece of Qiang Lenghou enters between modification, and use sander to polish, coating surface is smooth, and sander sand paper can not lower than 1200 orders.
In the present invention relative humidity refer to the water that unit volume air dissolves and its at most can the ratio of dissolved water, represent with RH%, as 40%-80%.
Automobile bumper coating technique, by transporting workpiece-cover-upper part-surface wipes-grinding workpieces-priming paint electrostatic precipitation-basecoat paint-priming paint dries-priming paint polishing-colored paint electrostatic precipitation-colored paint spraying-colored paint dries-varnish spraying-varnish dries-dry-by force cold-modification polish-parameter of each operation of modification polishing-check-put in storage and concrete operations control, make the spraying coating process of bumper reasonable, workable, make to spray the bumper surface quality obtained high simultaneously, the paint film face of color spray is smooth, brightness is high, face is even, predetermined color can be reached, and be not easy to fade, can guarantee insurance thick stick product quality.
Obvious specific implementation of the present invention is not subject to the restrictions described above, as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out, all within protection scope of the present invention.
Claims (10)
1. automobile bumper coating technique, is characterized in that: concrete technology is: workpiece transports-covers-upper part-surface wipes-grinding workpieces-priming paint electrostatic precipitation-basecoat paint-priming paint dries-priming paint polishing-colored paint electrostatic precipitation-colored paint spraying-colored paint dries-varnish spraying-varnish dries-dry-by force cold-modification to polish-modification polishing-inspection-warehouse-in.
2. automobile bumper coating technique as claimed in claim 1, is characterized in that:
Workpiece transhipment operation: be put into by workpiece on transport carriage and be firmly linked with, part of damaging is drawn in isolation, draws part sand paper of damaging and carries out grinding process, proceed to next procedure after all workpiece are qualified;
Cover operation: workpiece is put into and covers on platform, check whether surface quality meets the requirements, do not need the part sprayed to use adhesive plaster to cover to satisfactory workpiece;
Upper operation: all use flexible package to wrap up the interferences of working region, is suspended to the workpiece covered on another transport carriage and turns linked to firmly; To drawing part isolation of damaging, carrying out grinding process with sand paper, after all workpiece are qualified, proceeding to next procedure;
Surface wipes operation: adopt gauze to carry out wiping to covering surface, wipe covering surface dirt;
Grinding workpieces operation: surface of the work is polished;
Priming paint electrostatic precipitation operation: open the electrostatic generator that priming paint blows off room, opens compressed air air valve, and workpiece enters after priming paint blows off room, and after checking workpiece surface quality, dress is firmly linked with solid; Open and blow off rifle, blow off the foreign material of surface of the work with nozzle;
Basecoat paint operation: spray paint indoor temperature, humidity and cleanliness factor of priming paint controls to setting value;
Adjustment spraying painting pressure and compressed air pressure, use spray gun to spray;
Priming paint film thickness is 10 ~ 15um, detects after spraying with film thickness gauge;
Priming paint dries operation: the workpiece after spray-applied primer enters priming paint and dries indoor, and control priming paint and dry indoor temperature and humidity, flash-off time is 8 minutes;
Priming paint polishing operation: the workpiece sprayed after drying enters in priming paint grinding chamber polishes;
Colored paint electrostatic precipitation operation: open the electrostatic generator that colored paint blows off room, opens compressed air air valve, and workpiece enters after colored paint blows off room, and after checking workpiece surface quality, dress is firmly linked with solid; Open and blow off rifle, blow off the foreign material of surface of the work with nozzle;
Colored paint spraying process: spray paint indoor temperature, humidity and cleanliness factor of colored paint controls to setting value;
Adjustment spraying painting pressure and compressed air pressure, use spray gun to spray;
Metallic paint film thickness is 12 ~ 20um, and this colored paint film thickness is 20 ~ 35um, detects after spraying with film thickness gauge;
Colored paint dries operation: the workpiece after colored paint spraying enters colored paint and dries indoor, and control colored paint and dry indoor humidity and temperature, flash-off time is 10 minutes;
Varnish spraying process: spray paint indoor temperature, humidity and cleanliness factor of varnish controls to setting value;
Adjustment varnish spraying painting pressure and compressed air pressure, use spray gun to spray;
Varnish film thickness 30 ~ 40um, detects with film thickness gauge after spraying;
Varnish dries operation: the workpiece after varnish spraying enters varnish and dries room, and control varnish and dry indoor temperature and humidity, flash-off time is 13 minutes;
Baking operation: the workpiece after varnish dries enters drying chamber, during oven dry, workpiece temperature is 80 ± 5 DEG C, and measurement per hour is once; Drying time is 40 minutes;
Strong cooling working procedure: the workpiece after oven dry enters strong cold house, cooling air temperature 18 ~ 30 DEG C, strong cool time 5 minutes;
The workpiece modifying polishing operation: Qiang Lenghou enters between modification polishes;
Modify polishing process: the workpiece modified after polishing carries out surface finish;
Inspection process: use illuminating lamp, surface of the work is smooth, glossiness is consistent, is pieces O.K.;
Warehouse-in operation: the workpiece be up to the standards uses transport carriage to be transported to inventory area.
3. automobile bumper coating technique as claimed in claim 2, is characterized in that: described grinding workpieces operation, first uses damp sand paper to polish, and then adopts dry sand paper to polish; Before grinding workpieces, sand paper soaks and becomes damp sand paper in more than 10 minutes, and during polishing, 3-5 opens damp sand quires and puts together, dips in water polishing, abandons after 3-5 workpiece of polish, and the replacing in 2 hours of use of polishing water once;
Use gauze by after the dust wiped clean of surface of the work, re-use dry sand papering;
Touched by hand under lighting apparatus, visual method checks workpiece quality, until surface of the work is without scuffing, cut, burr, overlap and sand holes.
4. automobile bumper coating technique as claimed in claim 2 or claim 3, it is characterized in that: in described priming paint painting process, colored paint spraying process and varnish spraying process, priming paint paint spray booth, colored paint spray booth and varnish spraying indoor temperature control at 18 ~ 35 DEG C, and detection per hour once; Relative humidity controls at 40 ~ 80 ℅, and detection per hour once; Air purity controls at the particulate being greater than 5um without particle diameter, and the particulate of below 5um often rises and is less than 100000, detects weekly once.
5. automobile bumper coating technique as claimed in claim 2 or claim 3, it is characterized in that: in described priming paint painting process, colored paint spraying process and varnish spraying process, priming paint sprays paint, colored paint sprays and varnish spraying adopts membrane pump, membrane pump painting pressure is 0.20 ~ 0.40Mpa, within every 4 hours, detects once; Spraying compressed air pressure is 0.45 ~ 0.6Mpa, within every 4 hours, detects once.
6. automobile bumper coating technique as claimed in claim 2 or claim 3, it is characterized in that: in described priming paint painting process, colored paint spraying process and varnish spraying process, spray gun and workpiece distance remain on 150 ~ 250m, spray gun covering of the fan is vertical with workpiece and run parallel, and the steady translational speed of spray gun is 30 ~ 60cm/s.
7. automobile bumper coating technique as claimed in claim 2 or claim 3, is characterized in that: described priming paint polishing operation, and the workpiece priming paint part of spray light color topcoat is polished with 1000 object damp sand paper; The workpiece priming paint part spraying dark finish paint is polished with 800 object damp sand paper; If surface of the work scratches or distortion, first polish with 400 object damp sand paper, then carry out covering reparation polishing with 1000 object damp sand paper.
8. automobile bumper coating technique as claimed in claim 7, it is characterized in that: described priming paint polishing operation, often open 800 object damp sand paper and repair 8-10 workpiece, often open 1000 object damp sand paper and repair 5-8 workpiece, often open 400 object damp sand paper and repair 10-15 workpiece; During polishing, 3-4 is opened damp sand quires to put away; Dip in water droplet during polishing at the surface of the work that will polish, finger closes up, pushes down sand paper do rotary-grinding on the surface of the workpiece with palm, and to burnishing part water filling while polishing, the water of polishing is changed once for 2 hours; During polishing from the close-by examples to those far off, a bit become sector shape to spread out by corner, until whole, will continue in bruting process to remove polishing ash; After polishing terminates, wipe clean polishing water and the polishing ash of workpiece surfaces externally and internally.
9. automobile bumper coating technique as claimed in claim 2 or claim 3, it is characterized in that: described priming paint dries operation, described colored paint dries operation and described varnish dries in operation, priming paint dries room, colored paint dries room and varnish dries indoor temperature and controls at 18 ~ 35 DEG C, and detection per hour once; Priming paint dries indoor relative humidity and controls at 40 ~ 80 ℅, and detection per hour once.
10. automobile bumper coating technique as claimed in claim 2 or claim 3, is characterized in that: described modification polishing operation, the workpiece of Qiang Lenghou enters between modification, and use sander to polish, coating surface is smooth, and sander sand paper can not lower than 1200 orders.
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| CN201510496531.9A CN105013685A (en) | 2015-08-12 | 2015-08-12 | Automobile bumper spraying process |
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| CN113996472A (en) * | 2021-10-21 | 2022-02-01 | 东风柳州汽车有限公司 | Spraying tool and exterior trim coating method |
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| CN106166525A (en) * | 2016-05-04 | 2016-11-30 | 嘉兴敏惠汽车零部件有限公司 | A kind of automobile component fully-automatic coating production line |
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| CN110653142A (en) * | 2019-11-04 | 2020-01-07 | 阜阳东胜汽车零部件有限责任公司 | Automobile bumper spraying method |
| CN111804549A (en) * | 2020-07-07 | 2020-10-23 | 盛旺汽车零部件（昆山）有限公司 | Hub coating process |
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| CN113145429A (en) * | 2021-03-16 | 2021-07-23 | 安徽工程大学 | Spraying method for front engine cover of automobile |
| CN113102203A (en) * | 2021-03-22 | 2021-07-13 | 芜湖毅昌科技有限公司 | Automobile bumper spraying method |
| CN113617547A (en) * | 2021-08-12 | 2021-11-09 | 杜弗尼工程机械（苏州）有限公司 | Plastic spraying process with back spraying process |
| CN113996472A (en) * | 2021-10-21 | 2022-02-01 | 东风柳州汽车有限公司 | Spraying tool and exterior trim coating method |
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Application publication date: 20151104 |