CN108672251A - A kind of automotive lacquer method - Google Patents
A kind of automotive lacquer method Download PDFInfo
- Publication number
- CN108672251A CN108672251A CN201810564197.XA CN201810564197A CN108672251A CN 108672251 A CN108672251 A CN 108672251A CN 201810564197 A CN201810564197 A CN 201810564197A CN 108672251 A CN108672251 A CN 108672251A
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- China
- Prior art keywords
- car surface
- automotive lacquer
- middle layer
- car
- putty
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
- B05D7/148—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using epoxy-polyolefin systems in mono- or multilayers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
- B05D3/0263—After-treatment with IR heaters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/586—No clear coat specified each layer being cured, at least partially, separately
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2504/00—Epoxy polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2505/00—Polyamides
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention provides a kind of automotive lacquer method, belongs to automotive lacquer field, includes the following steps：Cleaning treatment is carried out to car surface first, ensures that car surface is smooth, clean dustless, rustless, without grease；Then it polishes car surface to increase the adsorption capacity to priming paint on its surface, the car surface after roughening carries out the spraying of priming paint, is then polished and fills up putty, middle layer paint is sprayed again, it polishes after drying, last spray paint, drying.The present invention provides a kind of automotive lacquer method, and not only method is simple, low manufacture cost, and multilayer spray painting improves varnished mechanical performance and glossiness, stringent control operating environment and condition, further increases the wearability of car surface, extends the service life of automobile.
Description
【Technical field】
The present invention relates to automotive lacquer technical fields, and in particular to a kind of automotive lacquer method.
【Background technology】
As China's automobile volume of holding increases year by year, automobile quantity increases year by year.Inside depot, vehicle frame, the welding of vehicle shell
It completes, after manual operation, next process is exactly japanning.Typically, it is light vehicle shell is immersed syrupy paint bath, takes out and dry
Dry bottom paint, is then fed into dust-free workshop, sprays finishing coat with electrostatic painting techniques, then dries.In existing technology, spray painting side
The spray gun of method tilts and is in that arc-shaped operation or movement velocity are changeable, just cannot get paint film in homogeneous thickness, and be also easy to produce striped
And spot, lead to many times good effect of neither one when spray painting；And by filling up or disposed of in its entirety before spray painting
Mode remove the rugged part of car surface, clear up repeatedly, fill up a large amount of manpower and materials of waste.Therefore, it now needs out
A kind of uniform, efficient automotive lacquer method of hair.
【Invention content】
The goal of the invention of the present invention is：In view of the above problems, a kind of automotive lacquer method is provided, not only method
Simply, low manufacture cost improves varnished mechanical performance and glossiness, to improve the wearability of car surface.
To achieve the goals above, the technical solution adopted by the present invention is as follows：
A kind of automotive lacquer method, includes the following steps：
S1：Cleaning treatment is carried out to car surface, makes that its surface is smooth, clean dustless, rustless, without grease, and by automobile
Dirt, grease in surface scratch are cleaned along cut direction；
S2：Automobile after above-mentioned cleaning treatment carries out increasing surface roughness processing, to enhance the adsorption energy of car surface
Power；
S3：Then at car surface anticorrosion with painting epoxy primer, after spraying to car surface be thermally dried processing 15~
25min, the drying temperature are maintained at 165~175 DEG C, then carry out polishing processing to the car surface after drying, then at it
Putty is scratched at uneven surface；
S4：After scratching putty, middle layer paint is sprayed then at car surface, all after spraying, dodges and does 5~10min, so
It uses short infrared roast light to toast 10~12min afterwards, grinding process is carried out after middle layer paint is completely solid, then at its surface
Spray paint is simultaneously dried.
Further, in step s3, the spraying method of the anti-corrosion epoxy primer is：Spray gun is put in vehicle spray painting table
Identity distance from for 15~25cm, keep the spray gun with car surface at right angles, run parallel.
Further, the movement speed of the spray gun is maintained between constant 40~50cm/s.
Further, the bore of the spray gun is 1.2mm, 1.3mm or 1.4mm.
Further, in step s3, the method for the blade coating putty is：Find out the eminence and recess of car surface, needle
The place of eminence is carried out to polish processing, recess takes benefit putty to be filled and led up, then polished flat with sand paper.
Further, in step s 4, the middle layer paint is epoxy polyamide middle layer paint.
Further, in step s 4, the middle layer paint completely it is solid after carry out grinding process be with No. 1200 or
No. 1500 sand paper are polished.
Further, in step s 4, the coating layer thickness of the middle layer paint is 155~160 μm.
The present invention provides a kind of automotive lacquer method, and advantageous effect compared with the existing technology is：
The present invention carries out cleaning treatment to car surface first, ensures that car surface is smooth, clean dustless, rustless, oil-free
Fat；Then it polishes car surface to increase the adsorption capacity to priming paint on its surface, the automobile table after roughening
Face carries out the spraying of priming paint, so that priming paint is more uniformly spread, and can fit closely in the surface of automobile, is then polished and filled out
Putty is mended, further makes car surface priming paint smooth, contributes to the progress of subsequent step；Spray middle layer paint again, make priming paint with
Subsequent finishing coat is preferably bonded, and can further increase the thickness of lacquer painting, improves the mechanical performances such as wear-resistant of car surface；It dries
It polishes after dry, last spray paint, drying.The method for paint spraying that the present invention limits can also improve the brightness of car body surface,
In the lacquer painting that the multilayer that car surface is formed is uniform and stable, property stabilization and resistance to mold corrosion are not easy to be infected with dust, Er Qiehou
Continuous automobile washing process is simple, not easy to wear.Each technological means of the present invention is all to cooperate, mutually promote
, and camp step by step, is all linked with one another, generated total technique effect is significantly larger than technology caused by single technological means
The simple adduction of means.
In short, the present invention provides a kind of automotive lacquer method, not only method is simple, low manufacture cost, and multilayer spray painting improves
Varnished mechanical performance and glossiness, stringent control operating environment and condition, further increase the wearability of car surface,
Extend the service life of automobile.
【Specific implementation mode】
Below by way of specific embodiment, the invention will be further described.
Embodiment 1
A kind of automotive lacquer method, includes the following steps：
S1：Cleaning treatment is carried out to car surface, makes that its surface is smooth, clean dustless, rustless, without grease, and by automobile
Dirt, grease in surface scratch are cleaned along cut direction；
S2：Automobile after above-mentioned cleaning treatment carries out increasing surface roughness processing, to enhance the adsorption energy of car surface
Power；
S3：Then at car surface anticorrosion with painting epoxy primer, processing is thermally dried to car surface after spraying
15min, the drying temperature are maintained at 165 DEG C, then carry out polishing processing to the car surface after drying, not then at its surface
Flat place's blade coating putty；It is described blade coating putty method be：The eminence and recess for finding out car surface are carried out for the place of eminence
Processing is polished, recess takes benefit putty to be filled and led up, then polished flat with sand paper；Wherein, the anti-corrosion epoxy primer
Spraying method is：It is to keep the spray gun rectangular, flat with car surface at 15cm that spray gun, which is put in vehicle spray painting surface distance,
Row operation；The movement speed of the spray gun is maintained at constant 40cm/s；The bore of the spray gun is 1.2mm；
S4：After scratching putty, epoxy polyamide middle layer paint is sprayed then at car surface, all after spraying, is dodged dry
Then 5min uses short infrared roast light to toast 10min, with No. 1200 sand after epoxy polyamide middle layer paint is completely solid
Paper carries out grinding process, then at its surface spraying finishing coat and dries；Wherein, the coating layer thickness of the middle layer paint is 155 μ
m。
Above method application and automotive lacquer, gained vehicle finishing coat is uniform.
Embodiment 2
A kind of automotive lacquer method, includes the following steps：
S1：Cleaning treatment is carried out to car surface, makes that its surface is smooth, clean dustless, rustless, without grease, and by automobile
Dirt, grease in surface scratch are cleaned along cut direction；
S2：Automobile after above-mentioned cleaning treatment carries out increasing surface roughness processing, to enhance the adsorption energy of car surface
Power；
S3：Then at car surface anticorrosion with painting epoxy primer, processing is thermally dried to car surface after spraying
25min, the drying temperature are maintained at 175 DEG C, then carry out polishing processing to the car surface after drying, not then at its surface
Flat place's blade coating putty；It is described blade coating putty method be：The eminence and recess for finding out car surface are carried out for the place of eminence
Processing is polished, recess takes benefit putty to be filled and led up, then polished flat with sand paper；Wherein, the anti-corrosion epoxy primer
Spraying method is：It is to keep the spray gun rectangular, flat with car surface at 25cm that spray gun, which is put in vehicle spray painting surface distance,
Row operation；The movement speed of the spray gun is maintained at constant 50cm/s；The bore of the spray gun is 1.3mm；
S4：After scratching putty, epoxy polyamide middle layer paint is sprayed then at car surface, all after spraying, is dodged dry
Then 10min uses short infrared roast light to toast 12min, with No. 1500 after epoxy polyamide middle layer paint is completely solid
Sand paper carries out grinding process, then at its surface spraying finishing coat and dries；Wherein, the coating layer thickness of the middle layer paint is
160μm。
Above method application and automotive lacquer, gained vehicle finishing coat is uniform.
Embodiment 3
A kind of automotive lacquer method, includes the following steps：
S1：Cleaning treatment is carried out to car surface, makes that its surface is smooth, clean dustless, rustless, without grease, and by automobile
Dirt, grease in surface scratch are cleaned along cut direction；
S2：Automobile after above-mentioned cleaning treatment carries out increasing surface roughness processing, to enhance the adsorption energy of car surface
Power；
S3：Then at car surface anticorrosion with painting epoxy primer, processing is thermally dried to car surface after spraying
20min, the drying temperature are maintained at 170 DEG C, then carry out polishing processing to the car surface after drying, not then at its surface
Flat place's blade coating putty；It is described blade coating putty method be：The eminence and recess for finding out car surface are carried out for the place of eminence
Processing is polished, recess takes benefit putty to be filled and led up, then polished flat with sand paper；Wherein, the anti-corrosion epoxy primer
Spraying method is：It is to keep the spray gun rectangular, flat with car surface at 20cm that spray gun, which is put in vehicle spray painting surface distance,
Row operation；The movement speed of the spray gun is maintained at constant 45cm/s；The bore of the spray gun is 1.4mm；
S4：After scratching putty, epoxy polyamide middle layer paint is sprayed then at car surface, all after spraying, is dodged dry
Then 8min uses short infrared roast light to toast 11min, with No. 1500 sand after epoxy polyamide middle layer paint is completely solid
Paper carries out grinding process, then at its surface spraying finishing coat and dries；Wherein, the coating layer thickness of the middle layer paint is 158 μ
m。
Above method application and automotive lacquer, gained vehicle finishing coat is uniform.
Comparative example 1
A kind of automotive lacquer method, includes the following steps：
S1：Cleaning treatment is carried out to car surface, makes that its surface is smooth, clean dustless, rustless, without grease；
S2：Automobile after above-mentioned cleaning treatment carries out increasing surface roughness processing, to enhance the adsorption energy of car surface
Power；
S3：Then at car surface anticorrosion with painting epoxy primer, processing is thermally dried to car surface after spraying
20min, the drying temperature are maintained at 170 DEG C, then carry out polishing processing to the car surface after drying, not then at its surface
Flat place's blade coating putty；It is described blade coating putty method be：The eminence and recess for finding out car surface are carried out for the place of eminence
Processing is polished, recess takes benefit putty to be filled and led up, then polished flat with sand paper；Wherein, the anti-corrosion epoxy primer
Spraying method is：It is to keep the spray gun rectangular, flat with car surface at 20cm that spray gun, which is put in vehicle spray painting surface distance,
Row operation；The movement speed of the spray gun is maintained at constant 45cm/s；The bore of the spray gun is 1.4mm；
S4：After scratching putty, epoxy polyamide middle layer paint is sprayed then at car surface, all after spraying, is dodged dry
Then 8min uses short infrared roast light to toast 11min, with No. 1500 sand after epoxy polyamide middle layer paint is completely solid
Paper carries out grinding process, then at its surface spraying finishing coat and dries；Wherein, the coating layer thickness of the middle layer paint is 158 μ
m。
Above method application and automotive lacquer, gained vehicle finishing coat is uneven.
Comparative example 2
A kind of automotive lacquer method, includes the following steps：
S1：Cleaning treatment is carried out to car surface, makes that its surface is smooth, clean dustless, rustless, without grease, and by automobile
Dirt, grease in surface scratch are cleaned along cut direction；
S2：Automobile after above-mentioned cleaning treatment carries out increasing surface roughness processing, to enhance the adsorption energy of car surface
Power；
S3：Then at car surface anticorrosion with painting epoxy primer, natural air drying after spraying, then to the car surface after drying
It carries out polishing processing, putty is scratched at its uneven surface；It is described blade coating putty method be：Find out the eminence of car surface
And recess, it carries out polishing processing for the place of eminence, recess is taken benefit putty to be filled and led up, is then polished flat with sand paper
It is whole；Wherein, the spraying method of the anti-corrosion epoxy primer is：It is to be kept at 20cm that spray gun, which is put in vehicle spray painting surface distance,
The spray gun and car surface at right angles, run parallel；The movement speed of the spray gun is maintained at constant 45cm/s；The spray gun
Bore be 1.4mm；
S4：After scratching putty, epoxy polyamide middle layer paint is sprayed then at car surface, all after spraying, is dodged dry
Then 8min uses short infrared roast light to toast 11min, with No. 1500 sand after epoxy polyamide middle layer paint is completely solid
Paper carries out grinding process, then at its surface spraying finishing coat and dries；Wherein, the coating layer thickness of the middle layer paint is 158 μ
m。
Above method application and automotive lacquer, gained vehicle finishing coat is uneven.
Comparative example 3
A kind of automotive lacquer method, includes the following steps：
S1：Cleaning treatment is carried out to car surface, makes that its surface is smooth, clean dustless, rustless, without grease, and by automobile
Dirt, grease in surface scratch are cleaned along cut direction；
S2：Automobile after above-mentioned cleaning treatment carries out increasing surface roughness processing, to enhance the adsorption energy of car surface
Power；
S3：Then at car surface anticorrosion with painting epoxy primer, processing is thermally dried to car surface after spraying
20min, the drying temperature are maintained at 170 DEG C, then carry out polishing processing to the car surface after drying, not then at its surface
Flat place's blade coating putty；It is described blade coating putty method be：The eminence and recess for finding out car surface are carried out for the place of eminence
Processing is polished, recess takes benefit putty to be filled and led up, then polished flat with sand paper；Wherein, the anti-corrosion epoxy primer
Spraying method is：It is to keep the spray gun rectangular, flat with car surface at 20cm that spray gun, which is put in vehicle spray painting surface distance,
Row operation；The movement speed of the spray gun is maintained at constant 30cm/s；The bore of the spray gun is 1.4mm；
S4：After scratching putty, epoxy polyamide middle layer paint is sprayed then at car surface, all after spraying, is dodged dry
Then 8min uses short infrared roast light to toast 11min, with No. 1500 sand after epoxy polyamide middle layer paint is completely solid
Paper carries out grinding process, then at its surface spraying finishing coat and dries；Wherein, the coating layer thickness of the middle layer paint is 158 μ
m。
Above method application and automotive lacquer, gained vehicle finishing coat is uneven.
Comparative example 4
A kind of automotive lacquer method, includes the following steps：
S1：Cleaning treatment is carried out to car surface, makes that its surface is smooth, clean dustless, rustless, without grease, and by automobile
Dirt, grease in surface scratch are cleaned along cut direction；
S2：Automobile after above-mentioned cleaning treatment carries out increasing surface roughness processing, to enhance the adsorption energy of car surface
Power；
S3：Then at car surface anticorrosion with painting epoxy primer, processing is thermally dried to car surface after spraying
20min, the drying temperature are maintained at 170 DEG C, then carry out polishing processing to the car surface after drying, not then at its surface
Flat place's blade coating putty；It is described blade coating putty method be：The eminence and recess for finding out car surface are carried out for the place of eminence
Processing is polished, recess takes benefit putty to be filled and led up, then polished flat with sand paper；Wherein, the anti-corrosion epoxy primer
Spraying method is：It is to keep the spray gun rectangular, flat with car surface at 20cm that spray gun, which is put in vehicle spray painting surface distance,
Row operation；The movement speed of the spray gun is maintained at constant 45cm/s；The bore of the spray gun is 1.4mm；
S4：After scratching putty, then at car surface spray paint and dry.
Above method application and automotive lacquer, gained vehicle finishing coat is uneven.
Although above the present invention is described in detail with a general description of the specific embodiments,
On the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Cause
This, these modifications or improvements, belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (8)
1. a kind of automotive lacquer method, which is characterized in that include the following steps：
S1：Cleaning treatment is carried out to car surface, makes that its surface is smooth, clean dustless, rustless, without grease, and by car surface
Dirt, grease in cut are cleaned along cut direction；
S2：Automobile after above-mentioned cleaning treatment carries out increasing surface roughness processing,；
S3：Then at car surface anticorrosion with painting epoxy primer, after spraying to car surface be thermally dried processing 15~
25min, the drying temperature are maintained at 165~175 DEG C, then carry out polishing processing to the car surface after drying, then at it
Putty is scratched at uneven surface；
S4：After scratching putty, middle layer paint is sprayed then at car surface, all after spraying, dodges and does 5~10min, then make
10~12min is toasted with short infrared roast light, grinding process is carried out after middle layer paint is completely solid, then at its surface spraying
Finishing coat is simultaneously dried.
2. a kind of automotive lacquer method according to claim 1, which is characterized in that in step s3, anti-corrosion epoxy bottom
The spraying method of paint is：It is to keep the spray gun and car surface at 15~25cm that spray gun, which is put in vehicle spray painting surface distance,
At right angles, it runs parallel.
3. a kind of automotive lacquer method according to claim 2, which is characterized in that the movement speed of the spray gun is maintained at permanent
Between fixed 40~50cm/s.
4. a kind of automotive lacquer method according to claim 2, which is characterized in that the bore of the spray gun be 1.2mm,
1.3mm or 1.4mm.
5. a kind of automotive lacquer method according to claim 1, which is characterized in that in step s3, the blade coating putty
Method is：The eminence and recess for finding out car surface polish processing for the place of eminence, recess take mend putty into
Row is filled and led up, and is then polished flat with sand paper.
6. a kind of automotive lacquer method according to claim 1, which is characterized in that in step s 4, the middle layer paint is
Epoxy polyamide middle layer paint.
7. a kind of automotive lacquer method according to claim 1, which is characterized in that in step s 4, the middle layer paint is complete
It is absolutely dry it is solid after to carry out grinding process polished with No. 1200 or No. 1500 sand paper.
8. a kind of automotive lacquer method according to claim 1, which is characterized in that in step s 4, the middle layer paint
Coating layer thickness is 155~160 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810564197.XA CN108672251A (en) | 2018-06-04 | 2018-06-04 | A kind of automotive lacquer method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810564197.XA CN108672251A (en) | 2018-06-04 | 2018-06-04 | A kind of automotive lacquer method |
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| CN108672251A true CN108672251A (en) | 2018-10-19 |
Family
ID=63809934
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| CN201810564197.XA Pending CN108672251A (en) | 2018-06-04 | 2018-06-04 | A kind of automotive lacquer method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110538783A (en) * | 2019-08-30 | 2019-12-06 | 合肥通快钣金科技有限公司 | sheet metal part coating process |
| CN112902570A (en) * | 2021-01-22 | 2021-06-04 | 机械工业第九设计研究院有限公司 | Intelligent energy-saving emission-reducing system of drying furnace |
| US20230098435A1 (en) * | 2021-09-28 | 2023-03-30 | Toyota Jidosha Kabushiki Kaisha | Method for forming parting line |
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| CN106733557A (en) * | 2016-12-26 | 2017-05-31 | 中车广东轨道交通车辆有限公司 | The surface treatment method of rail traffic vehicles |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110538783A (en) * | 2019-08-30 | 2019-12-06 | 合肥通快钣金科技有限公司 | sheet metal part coating process |
| CN112902570A (en) * | 2021-01-22 | 2021-06-04 | 机械工业第九设计研究院有限公司 | Intelligent energy-saving emission-reducing system of drying furnace |
| CN112902570B (en) * | 2021-01-22 | 2023-03-28 | 机械工业第九设计研究院股份有限公司 | Intelligent energy-saving and emission-reducing system of drying furnace |
| US20230098435A1 (en) * | 2021-09-28 | 2023-03-30 | Toyota Jidosha Kabushiki Kaisha | Method for forming parting line |
| US11878313B2 (en) * | 2021-09-28 | 2024-01-23 | Toyota Jidosha Kabushiki Kaisha | Method for forming parting line |
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Application publication date: 20181019 |
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