CN112756230B - Vehicle door assembly manufacturing method and vehicle - Google Patents
Vehicle door assembly manufacturing method and vehicle Download PDFInfo
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- CN112756230B CN112756230B CN202110136157.7A CN202110136157A CN112756230B CN 112756230 B CN112756230 B CN 112756230B CN 202110136157 A CN202110136157 A CN 202110136157A CN 112756230 B CN112756230 B CN 112756230B
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- vehicle door
- plate
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- door
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J5/00—Doors
- B60J5/04—Doors arranged at the vehicle sides
- B60J5/0412—Lower door structure
- B60J5/0413—Inner panel, e.g. characterised by carrying components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J5/00—Doors
- B60J5/04—Doors arranged at the vehicle sides
- B60J5/0412—Lower door structure
- B60J5/0415—Outer panel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
Abstract
The invention provides a method for manufacturing a vehicle door assembly and a vehicle, wherein the method for manufacturing the vehicle door assembly comprises the following steps: coating a substrate with a drawing oil, wherein the drawing oil has volatility or a boiling point lower than a first temperature; stamping the base material coated with the drawing oil to form a vehicle door inner plate and a vehicle door outer plate; performing edge covering treatment on the vehicle door inner plate and the vehicle door outer plate to obtain a vehicle door inner plate assembly and a vehicle door outer plate assembly; carrying out electrophoresis treatment on the vehicle door inner and outer plate assembly, and baking the vehicle door inner and outer plate assembly subjected to electrophoresis treatment according to a second temperature; coating PVC (polyvinyl chloride) fine sealing glue at the edge joint of the inner vehicle door panel and the outer vehicle door panel; baking the vehicle door inner and outer plate assembly coated with the PVC fine sealing glue according to a second temperature to obtain the vehicle door assembly; wherein the first temperature is lower than the second temperature. The invention solves the problem that the PVC fine sealing adhesive generates more adhesive bubbles after being baked.
Description
Technical Field
The invention relates to the technical field of automobile parts, in particular to a method for manufacturing a vehicle door assembly and a vehicle.
Background
With the improvement of living standard of people, automobiles become one of important transportation tools. The automobile door is used as a part frequently used in an automobile, and can play a role in resisting side impact on one hand and provide mounting positions for a large number of automobile door accessories on the other hand.
However, in the production process of the vehicle door, when the vehicle door inner panel and the vehicle door outer panel are subjected to hemming treatment, there is usually residual drawing oil inside the hemming area or a glue removing material used when removing the overflowed hemming glue. These materials cannot be effectively removed before Polyvinyl chloride (PVC) sealant is applied, so that when the door inner panel and the door outer panel coated with the PVC sealant are baked, these materials generate evaporation gas to push out bubbles of the PVC sealant. Therefore, whether the manual gluing method or the robot gluing method is used, the PVC sealing compound always has the problem of more bubbles after being baked, so that the corrosion resistance of the vehicle door is reduced.
Disclosure of Invention
The embodiment of the invention provides a method for manufacturing a vehicle door assembly and a vehicle, which aim to reduce rubber bubbles generated after baking of PVC (polyvinyl chloride) fine sealing glue.
In order to achieve the above object, an embodiment of the present invention provides a method for manufacturing a vehicle door assembly, including:
coating a substrate with a drawing oil, wherein the drawing oil has volatility or a boiling point lower than a first temperature;
stamping the base material coated with the drawing oil to form a vehicle door inner plate and a vehicle door outer plate;
performing edge covering treatment on the vehicle door inner plate and the vehicle door outer plate to obtain a vehicle door inner plate assembly and a vehicle door outer plate assembly;
carrying out electrophoresis treatment on the vehicle door inner and outer plate assembly, and baking the vehicle door inner and outer plate assembly subjected to electrophoresis treatment according to a second temperature;
coating polyvinyl chloride (PVC) fine sealing glue on edge joint positions of the baked vehicle door inner plate and the baked vehicle door outer plate;
baking the vehicle door inner and outer plate assembly coated with the PVC fine sealing adhesive according to a third temperature to obtain the vehicle door assembly;
wherein the first temperature is lower than the second temperature.
Optionally, the second temperature ranges from 160 ℃ to 180 ℃.
Optionally, the step of performing hemming treatment on the inner door panel and the outer door panel to obtain the inner and outer door panel assemblies includes:
the vehicle door outer plate is pretreated, the pretreated vehicle door outer plate comprises a vehicle door outer plate body and a to-be-flanged edge, and the to-be-flanged edge is connected with the vehicle door outer plate body;
coating a hemming adhesive at the joint close to the outer plate body of the vehicle door and the to-be-hemmed edge;
the vehicle door inner plate and the vehicle door outer plate are placed in a fitting mode, and the vehicle door inner plate covers the coated edge folding glue;
and performing edge covering treatment on the inner vehicle door plate and the outer vehicle door plate to obtain the inner vehicle door plate assembly and the outer vehicle door plate assembly.
Optionally, the to-be-flanged edge is perpendicular to the door outer panel body.
Optionally, after the step of performing edge covering processing on the door inner panel and the door outer panel to obtain the door inner and outer panel assembly, the method further includes:
using a glue removing material to wipe the overflowing edge folding glue, wherein the glue removing material has volatility or the boiling point is lower than a fourth temperature;
wherein the fourth temperature is lower than the second temperature.
Optionally, the vehicle door inner plate and the vehicle door outer plate are placed in a laminating manner, and under the condition that the vehicle door inner plate covers the coated hemming adhesive, the range of a gap between a trimming line of the vehicle door inner plate and the to-be-hemmed is 1-2 mm.
Optionally, the height difference of the edge cutting edge of the vehicle door outer panel is less than 1 mm.
Embodiments of the present invention also provide an automobile including a door, where the door includes a door assembly manufactured by the above-described door assembly manufacturing method.
In the embodiment of the invention, when the volatile drawing oil is adopted as the drawing oil, the drawing oil can be volatilized continuously during the stamping process and after the stamping process is finished. And after the drawing oil remained on the inner car door plate and the outer car door plate is completely volatilized, coating the PVC sealing glue, and baking the inner and outer car door plate assemblies coated with the PVC sealing glue at a third temperature to obtain the car door assembly. Therefore, when the inner and outer plate assemblies of the vehicle door coated with the PVC sealing compound are baked, no evaporation gas is generated, and the generation of rubber bubbles after baking of the PVC sealing compound is reduced.
When the drawing oil with the boiling point lower than the first temperature is adopted, electrophoresis treatment is carried out on the inner and outer plate assemblies of the vehicle door, and in the process of baking the inner and outer plate assemblies of the vehicle door after the electrophoresis treatment according to the second temperature, the second temperature is higher than the first temperature, so that the drawing oil remained on the inner plate of the vehicle door and the outer plate of the vehicle door is completely vaporized. Therefore, when the vehicle door inner and outer plate assembly coated with the PVC sealing compound is baked at the third temperature to obtain the vehicle door assembly, no evaporation gas is generated, and therefore rubber bubbles generated after baking of the PVC sealing compound are reduced.
The method for manufacturing the vehicle door assembly comprises the steps of coating drawing oil on a base material, wherein the drawing oil has volatility or the boiling point of the drawing oil is lower than a first temperature; stamping the base material coated with the drawing oil to form a vehicle door inner plate and a vehicle door outer plate; performing edge covering treatment on the vehicle door inner plate and the vehicle door outer plate to obtain a vehicle door inner plate assembly and a vehicle door outer plate assembly; carrying out electrophoresis treatment on the vehicle door inner and outer plate assembly, and baking the vehicle door inner and outer plate assembly subjected to electrophoresis treatment according to a second temperature; coating PVC (polyvinyl chloride) fine sealing glue at the edge joint of the inner vehicle door panel and the outer vehicle door panel; baking the vehicle door inner and outer plate assembly coated with the PVC fine sealing adhesive at a second temperature to obtain the vehicle door assembly; wherein the first temperature is lower than the second temperature. When the drawing oil is made of a material with volatility or the boiling point lower than the first temperature, the residual drawing oil on the inner plate component and the outer plate component of the vehicle door can be completely removed before the PVC sealing compound is coated. Therefore, the inner and outer plate assemblies of the vehicle door coated with the PVC sealing compound are baked according to the third temperature, and no evaporation gas is generated in the process of obtaining the vehicle door assembly, so that rubber bubbles generated after the PVC sealing compound is baked are reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic flow chart diagram illustrating a method for manufacturing a door assembly according to an embodiment of the present invention.
FIG. 2 is a schematic view of a state before hemming of the outer door panel and the inner door panel according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
As shown in fig. 1, an embodiment of the present invention provides a method for manufacturing a vehicle door assembly, including:
102, stamping the base material coated with the drawing oil to form a vehicle door inner plate 2 and a vehicle door outer plate 1;
103, performing edge covering treatment on the vehicle door inner plate 2 and the vehicle door outer plate 1 to obtain a vehicle door inner and outer plate assembly;
104, performing electrophoresis treatment on the vehicle door inner and outer plate assembly, and baking the vehicle door inner and outer plate assembly subjected to electrophoresis treatment according to a second temperature;
105, coating PVC (polyvinyl chloride) fine sealing glue at the edge joint of the inner door panel 2 and the outer door panel 1;
wherein the first temperature is lower than the second temperature.
It should be understood that, in the step 102, the base material coated with the drawing oil is formed into the door inner panel 2 and the door outer panel 1 by stamping, the door inner panel 2 and the door outer panel 1 may be formed by stamping from the same base material or may be formed by stamping from different base materials.
In the embodiment of the invention, when the drawing oil with volatility is adopted, the drawing oil can be volatilized continuously during and after the stamping. And after the drawing oil remained on the inner door plate 2 and the outer door plate 1 is completely volatilized, coating the PVC sealing glue, and baking the inner and outer door plate assemblies coated with the PVC sealing glue at a third temperature to obtain the door assembly. Therefore, when the inner and outer plate assemblies of the vehicle door coated with the PVC sealing compound are baked, no evaporation gas is generated, and the generation of rubber bubbles after baking of the PVC sealing compound is reduced.
When the drawing oil with the boiling point lower than the first temperature is adopted, the electrophoresis treatment is carried out on the door inner and outer plate assemblies, and in the process of baking the door inner and outer plate assemblies subjected to the electrophoresis treatment according to the second temperature, the second temperature is higher than the first temperature, so that the drawing oil remained on the door inner plate 2 and the door outer plate 1 is completely vaporized. Therefore, the inner and outer plate assemblies of the vehicle door coated with the PVC sealing compound are baked at the third temperature, and no evaporation gas is generated in the process of obtaining the vehicle door assembly, so that rubber bubbles generated after baking of the PVC sealing compound are reduced.
The method for manufacturing the vehicle door assembly comprises the steps of coating drawing oil on a base material, wherein the drawing oil has volatility or the boiling point of the drawing oil is lower than a first temperature; stamping the base material coated with the drawing oil to form a vehicle door inner plate 2 and a vehicle door outer plate 1; performing edge covering treatment on the vehicle door inner plate 2 and the vehicle door outer plate 1 to obtain a vehicle door inner plate assembly and a vehicle door outer plate assembly; carrying out electrophoresis treatment on the vehicle door inner and outer plate assembly, and baking the vehicle door inner and outer plate assembly subjected to electrophoresis treatment according to a second temperature; coating PVC (polyvinyl chloride) sealing glue at the edge joint of the inner door plate 2 and the outer door plate 1; baking the vehicle door inner and outer plate assembly coated with the PVC fine sealing glue according to a second temperature to obtain the vehicle door assembly; wherein the first temperature is lower than the second temperature. When the drawing oil is made of a material with volatility or the boiling point lower than the first temperature, the residual drawing oil on the inner plate component and the outer plate component of the vehicle door can be completely removed before the PVC sealing compound is coated. Therefore, the inner and outer plate assemblies of the vehicle door coated with the PVC sealing compound are baked according to the third temperature, and no evaporation gas is generated in the process of obtaining the vehicle door assembly, so that rubber bubbles generated after the PVC sealing compound is baked are reduced.
Optionally, the second temperature ranges from 160 ℃ to 180 ℃.
As shown in fig. 2, optionally, in step 103, performing a hemming process on the door inner panel 2 and the door outer panel 1 to obtain a door inner and outer panel assembly includes:
the method comprises the following steps of preprocessing the vehicle door outer panel 1, wherein the preprocessed vehicle door outer panel 1 comprises a vehicle door outer panel body 11 and a to-be-folded edge 12, and the to-be-folded edge 12 is connected with the vehicle door outer panel body 11;
coating a hemming adhesive at the position close to the connection part of the outer vehicle door panel body 11 and the to-be-hemmed edge 12;
the vehicle door inner plate 2 and the vehicle door outer plate 1 are placed in a laminating mode, and the vehicle door inner plate 2 covers the coated edge folding glue;
and performing edge covering treatment on the inner door plate 2 and the outer door plate 1 to obtain the inner and outer door plate assemblies.
It should be understood that, in the step of applying the hemming adhesive near the joint of the door outer panel body 11 and the to-be-hemmed edge 12, the hemming adhesive may be applied by manual gluing or by robot gluing. Of course, the specific glue application method is not limited herein.
Alternatively, the to-be-hemmed edge 12 is perpendicular to the door outer panel body 11.
It should be understood that the angle between the edge to be folded 12 and the door outer panel body 11 is not limited herein.
In the present embodiment, the to-be-hemmed 12 is perpendicular to the door outer panel body 11. On one hand, the car door inner plate 2 and the outer plate are not influenced to be attached and placed, and on the other hand, the acting force is convenient to act on the to-be-folded edge 12 to enable the to-be-folded edge 12 to be folded.
Optionally, the step 103, after performing edge covering processing on the door inner panel 2 and the door outer panel 1 to obtain a door inner and outer panel assembly, further includes:
using a glue removing material to wipe the overflowing edge folding glue, wherein the glue removing material has volatility or the boiling point is lower than a fourth temperature;
wherein the fourth temperature is lower than the second temperature.
In an embodiment, in the step 103, after the edge-folding glue is not overflowed after the edge-folding processing is performed on the door inner panel 2 and the door outer panel 1 to obtain the door inner and outer panel assembly, the step of wiping the overflowed edge-folding glue by using the glue removing material can be omitted.
It should be understood that the sealant removing material is a material for removing the overflowing hemming adhesive and a material for wiping the door inner and outer panel assemblies. Of course, the specific materials are not limited thereto.
In the embodiment of the invention, when the glue removing material adopts a volatile glue removing material, the glue removing material can be volatilized continuously in the stamping process and after the stamping is finished. And after the glue removing materials remained on the inner door plate 2 and the outer door plate 1 are completely volatilized, coating the PVC sealing glue, and baking the inner and outer door plate assemblies coated with the PVC sealing glue at a third temperature to obtain the door assembly. Therefore, when the inner and outer plate assemblies of the vehicle door coated with the PVC sealing compound are baked, no evaporation gas is generated, and the generation of rubber bubbles after baking of the PVC sealing compound is reduced.
When the glue removing material is the glue removing material with the boiling point lower than the fourth temperature, electrophoresis treatment is carried out on the inner and outer plate assemblies of the vehicle door, and in the process of baking the inner and outer plate assemblies of the vehicle door after the electrophoresis treatment according to the second temperature, the second temperature is higher than the fourth temperature, so that the glue removing material remained on the inner plate 2 of the vehicle door and the outer plate 1 of the vehicle door is completely vaporized. Therefore, when the vehicle door inner and outer plate assembly coated with the PVC sealing compound is baked at the third temperature to obtain the vehicle door assembly, no evaporation gas is generated, and therefore rubber bubbles generated after baking of the PVC sealing compound are reduced.
In this embodiment, when the sealant removing material is a material having volatility or a boiling point lower than the fourth temperature, it can be ensured that the residual sealant removing material on the inner and outer plate assemblies of the vehicle door is completely removed before the PVC sealing compound is coated. Therefore, the inner and outer plate assemblies of the vehicle door coated with the PVC sealing compound are baked according to the third temperature, and no evaporation gas is generated in the process of obtaining the vehicle door assembly, so that rubber bubbles generated after the PVC sealing compound is baked are reduced.
Optionally, when the door inner panel 2 and the door outer panel 1 are placed in a fitting manner and the door inner panel 2 covers the coated hemming adhesive, the gap between the trimming line of the door inner panel 2 and the to-be-hemmed edge 12 ranges from 1mm to 2 mm.
In the present embodiment, the clearance between the trimming line 21 of the door inner panel and the to-be-flanged edge 12 ranges from 1mm to 2 mm. Through the arrangement, the probability of the conditions of edge collapse or deformation and the like in the process of turning the edge to be folded 12 towards the vehicle door inner plate 2 is reduced, so that the possibility of a cavity in the area coated with the edge folding glue is reduced, the air in the cavity is prevented from being heated and expanded to eject glue bubbles out of the PVC sealing glue, and the glue bubbles generated after the PVC sealing glue is baked are further reduced.
Optionally, the height difference of the edge cutting edge of the vehicle door outer panel 1 is less than 1 mm.
In the embodiment, the height difference of the edge cutting of the vehicle door outer panel 1 is less than 1 mm. Through the arrangement, the possibility of a cavity at the coating position of the PVC fine sealing adhesive is reduced, and the PVC fine sealing adhesive is prevented from being pushed out of the rubber bubble due to the heated expansion of air in the cavity, so that the rubber bubble generated after the PVC fine sealing adhesive is baked is further reduced.
Embodiments of the present invention also provide an automobile including a door, where the door includes a door assembly manufactured by the above-described door assembly manufacturing method. Specifically, reference may be made to the description in the above embodiments, which are not repeated herein. Since the door assembly manufactured by the door assembly manufacturing method in the above embodiment is adopted in the present embodiment, the present embodiment provides the automobile having all the advantageous effects of the door assembly manufactured by the door assembly manufacturing method in the above embodiment.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A method of manufacturing a vehicle door assembly, comprising:
coating drawing oil on a substrate, wherein the drawing oil is volatile and has a boiling point lower than a first temperature;
stamping the base material coated with the drawing oil to form a vehicle door inner plate and a vehicle door outer plate;
performing edge covering treatment on the vehicle door inner plate and the vehicle door outer plate to obtain a vehicle door inner plate assembly and a vehicle door outer plate assembly;
carrying out electrophoresis treatment on the vehicle door inner and outer plate assembly, and baking the vehicle door inner and outer plate assembly subjected to electrophoresis treatment according to a second temperature; the first temperature is lower than the second temperature, and the second temperature is higher than the first temperature, so that the drawing oil remained on the inner door plate and the outer door plate is completely vaporized; after the drawing oil remained on the inner vehicle door plate and the outer vehicle door plate is completely volatilized, coating polyvinyl chloride (PVC) fine sealing glue at the edge-covered joint of the inner vehicle door plate and the outer vehicle door plate;
baking the inner and outer plate assemblies of the vehicle door coated with the polyvinyl chloride (PVC) fine sealing adhesive according to a third temperature to obtain the vehicle door assembly,
wherein the step of obtaining the inner and outer panel assemblies of the vehicle door comprises:
the vehicle door outer plate is pretreated, the pretreated vehicle door outer plate comprises a vehicle door outer plate body and a to-be-flanged edge, and the to-be-flanged edge is connected with the vehicle door outer plate body; coating a hemming adhesive at the joint close to the outer plate body of the vehicle door and the to-be-hemmed edge;
the vehicle door inner plate and the vehicle door outer plate are placed in a laminating mode, and the vehicle door inner plate is coated with the edge folding glue in a covering mode; performing edge covering treatment on the vehicle door inner plate and the vehicle door outer plate to obtain a vehicle door inner plate and vehicle door outer plate assembly;
wherein, after obtaining the step of the inner and outer panel assemblies of the vehicle door, the method further comprises the following steps:
using a glue removing material to wipe the overflowing edge folding glue, wherein the glue removing material has volatility and the boiling point is lower than a fourth temperature; wherein the fourth temperature is lower than the second temperature.
2. The method of manufacturing a door assembly as claimed in claim 1, wherein said second temperature is in a range of 160 ℃ to 180 ℃.
3. The method of manufacturing a door assembly as claimed in claim 1, wherein the to-be-flanged side is perpendicular to the door outer panel body.
4. The manufacturing method of the vehicle door assembly according to claim 1, wherein a clearance between a trimming line of the vehicle door inner panel and the edge to be hemmed ranges from 1mm to 2mm when the vehicle door inner panel and the vehicle door outer panel are placed in a bonded manner and the vehicle door inner panel is coated with the hemming adhesive.
5. The method of manufacturing a door assembly as claimed in claim 1, wherein a height difference of the seam trim of the door outer panel is less than 1 mm.
6. An automobile comprising a door including a door assembly manufactured by the method of manufacturing a door assembly as claimed in any one of claims 1 to 5.
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| CN202110136157.7A CN112756230B (en) | 2021-02-01 | 2021-02-01 | Vehicle door assembly manufacturing method and vehicle |
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| CN202110136157.7A CN112756230B (en) | 2021-02-01 | 2021-02-01 | Vehicle door assembly manufacturing method and vehicle |
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| CN112756230B true CN112756230B (en) | 2022-07-19 |
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| US20020073625A1 (en) * | 2000-06-06 | 2002-06-20 | Jennings Daniel E. | Modular closure for motor vehicles and method of making the same |
| EP1470869B1 (en) * | 2002-01-28 | 2011-03-09 | JFE Steel Corporation | Method for producing coated steel sheet |
| CN103666660B (en) * | 2012-09-20 | 2015-07-01 | 中国石油化工股份有限公司 | Automobile part drawing oil composition and use thereof |
| CN205008277U (en) * | 2015-07-30 | 2016-02-03 | 上海新朋联众汽车零部件有限公司 | Automatic clean clean system of board outdoors |
| CN107138645B (en) * | 2017-07-18 | 2018-12-28 | 安徽凯密克企业管理咨询有限公司 | A kind of automobile sash production technology |
| CN108102817A (en) * | 2017-12-14 | 2018-06-01 | 陈晖清 | A kind of silane coupling agent suitable for automobile manufacturing process removal vehicle-door edge position calymma |
| CN111842083A (en) * | 2020-06-10 | 2020-10-30 | 东风柳州汽车有限公司 | Vehicle body coating process for collinear production of water-based 3C1B1PH coating and solvent-based coating |
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