CN111266276A - Putty-free metal plate method - Google Patents
Putty-free metal plate method Download PDFInfo
- Publication number
- CN111266276A CN111266276A CN201811479914.5A CN201811479914A CN111266276A CN 111266276 A CN111266276 A CN 111266276A CN 201811479914 A CN201811479914 A CN 201811479914A CN 111266276 A CN111266276 A CN 111266276A
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- China
- Prior art keywords
- sheet metal
- namely
- paint
- metal part
- putty
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Classifications
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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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/005—Repairing damaged coatings
-
- 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
-
- 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
- B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
Abstract
The invention belongs to the technical field of automobile repair, and particularly discloses a putty-free sheet metal method which comprises the steps of sheet metal part disassembly, damage confirmation, old paint film removal, sheet metal part leveling, tempering treatment and the like; this scheme does not hinder former factory car lacquer at the sunken in-process of repairing of car, more need not fill putty, avoids the later stage fracture to appear, the problem of fading, corrosion.
Description
Technical Field
The invention belongs to the technical field of automobile repair, and particularly discloses a putty-free metal plate method.
Background
The automobile is also called as a car (english: car; american english: auto; american spoken language: auto), i.e. a vehicle which has power to drive and can run by power without depending on rails or cables. In a broad sense, a vehicle having four-wheel or higher running is generally called an automobile.
With the economic development of human society, people buy a large amount of automobiles, the automobiles become an indispensable part in social life, with the gradual increase of automobiles on roads, various automobile safety accidents are in endless, and the automobile shape is sunken due to the rubbing, hanging and collision of the automobiles in most traffic cases;
and in current panel beating technique, need grind former factory car lacquer, and puttying filler, just can solve the problem spraying paint after, owing to former factory car lacquer's destruction, later spraying paint intensity etc. quality not enough, and the coefficient of expansion of putty filler and car lacquer is different, and the later stage is the fracture easily appearing, fades, and the problem of corrosion extremely appears following problem:
1. the flatness and smoothness of the putty scraped on the car body can not reach the curve and straightness of the original car, and the visual effect is influenced.
2. Because of the difference of the expansion coefficients, the scraped putty is easy to deform and crack along with the delay of time and the change of temperature.
3. The dead weight of the automobile body is increased (some can even reach one third of the original weight of the automobile), so that the oil consumption of the automobile is greatly increased.
4. The paint surface of the vehicle body after putty coating is dull and not bright in color.
5. The procedure is cumbersome and the repair cycle is lengthy.
The above problems are urgently needed to be solved by the technical personnel in the field.
Disclosure of Invention
In order to solve the problems, the invention provides a putty-free metal plate method which does not damage the original factory car paint, does not need to be filled with putty, and avoids the problems of cracking, fading and rusting in the later period.
In order to achieve the aim, the scheme provides a putty-free metal plate method which comprises the following steps:
A. sheet metal part disassembly, namely detaching the sheet metal part at the damaged part of the collided vehicle from the original vehicle body;
B. damage confirmation, namely after cleaning a damaged part, confirming the damage degree and estimating the repair cost;
C. removing an old paint film, namely polishing the original car paint at the damaged part until an iron plate layer and an aluminum plate layer are exposed;
D. leveling a sheet metal part, namely leveling the concave part as much as possible by adopting a corresponding sheet metal tool according to the damage degree of the sheet metal part; after leveling operation, finely adjusting the flatness of the surface of the sheet metal part;
E. reducing treatment, namely eliminating tensile and extrusion stress generated in the process of flattening the metal through reducing treatment, and keeping the rigidity and the strength of the sheet metal part;
F. scraping a tin bar, namely smearing epoxy primer on the sheet metal part or the damaged sheet metal part, cleaning and deoiling the sheet metal part or the damaged sheet metal part smeared with the epoxy primer, and scraping the tin bar; then, polishing is carried out, and a punching line is confirmed;
G. polishing the feathery edge, namely polishing a buffering slope surface at the connection part of the damaged part and the peripheral paint film to increase the contact area with the paint, so that the newly sprayed paint surface is better connected with the original vehicle paint surface;
H. spraying a middle coating primer, namely spraying the middle coating primer on the upper layer of the epoxy primer of the sheet metal part or the damaged sheet metal part in the step F, and baking;
I. polishing the middle coating primer, namely polishing the middle coating primer until the height of the middle coating primer is the same as that of the original vehicle paint surface, and confirming the flatness;
J. paint mixing, namely mixing the automobile finish for later use to avoid color difference;
K. and (3) spraying finish paint, namely adding the adjusted finish paint into a spray gun tank, and starting to uniformly spray the finish paint on the sheet metal part after adjusting the air pressure, the paint output and the spray width of a spray gun.
The working principle and the beneficial effects of the basic scheme are as follows:
1. the scheme adopts the tin bar for coating and scraping, and does not adopt putty as filler, so that various damages caused by using the putty are avoided from the source when the repair work of the deformed metal shell of the automobile is realized;
2. in the repairing process, tin is used for replacing putty for filling, so that the damage of the drawing putty to the car body is effectively avoided, the intensity of the repaired car body is high, the flatness is high, the color is bright, the car body is not easy to crack and deform, and the value of the car is guaranteed to the maximum extent;
3. the original factory car paint is not damaged, the appearance of the original car is restored to the maximum extent, and the strength of the original car is not damaged.
Further, the sheet metal part leveling method in the step D comprises the following specific steps: a. firstly, transversely comparing the sunken parts; b. disassembling damaged parts and inner decorations; c. starting fixed point finding by using a long repairing rod, and starting repairing a large-area recess; the individual super-huge depressions can be repaired by adopting glue injection drawing; d. carrying out advanced comparison to find out a deeper dent, and restoring the dent from different positions by using restoring rods with different lengths and adopting a jumping point finding method; e. aiming at the damage of the ridge part, a sharp-pointed bent repairing rod is used for reconstructing the ridge; f. the small concave points are treated, and the surface is carefully repaired by using a plastic pen to ensure that the car body is flat and smooth; g. and (4) performing fine treatment to ensure that the arrangement and the size of the repaired place are the same as those of the original paint line of the paint surface. The original vehicle shape is restored to the maximum extent, and the original vehicle strength is not damaged.
Further, the tin bar used in the step F is a lead-free environment-friendly tin bar, and the tin content of the tin bar is 99.3%.
Furthermore, when the middle-coating primer is sprayed in the step H, the part which does not need to be sprayed needs to be shielded, so that the vehicle body is prevented from being polluted, the original vehicle paint of the vehicle body is prevented from being polluted and color difference occurs, the repair quality is ensured, and rework is prevented.
And further, in the step C, the polished old paint films are collected in a unified mode, part of the polished old paint films can be recycled, and the rest parts which cannot be recycled are collected in a unified mode to prevent the environment from being polluted.
Further, in the step G, the slope degree of the slope surface is 15-20 degrees.
Detailed Description
The following is further detailed by the specific embodiments:
example 1
A putty-free metal plate method comprises the following steps:
A. sheet metal part disassembly, namely detaching the sheet metal part at the damaged part of the collided vehicle from the original vehicle body;
B. damage confirmation, namely after cleaning a damaged part, confirming the damage degree and estimating the repair cost;
C. removing an old paint film, namely polishing the original car paint at the damaged part until an iron plate layer and an aluminum plate layer are exposed; uniformly collecting the polished old paint films;
D. leveling a sheet metal part, namely leveling the concave part as much as possible by adopting a corresponding sheet metal tool according to the damage degree of the sheet metal part; after leveling operation, finely adjusting the flatness of the surface of the sheet metal part;
E. reducing treatment, namely eliminating tensile and extrusion stress generated in the process of flattening the metal through reducing treatment, and keeping the rigidity and the strength of the sheet metal part;
F. scraping a tin bar, namely smearing epoxy primer on the sheet metal part or the damaged sheet metal part, cleaning and deoiling the sheet metal part or the damaged sheet metal part smeared with the epoxy primer, and scraping the tin bar; then, polishing is carried out, and a punching line is confirmed; the tin bar is a lead-free environment-friendly tin bar, and the tin content of the tin bar is 99.3 percent.
G. Polishing the feathery edges, namely polishing a buffering slope surface at the connection part of the damaged part and the peripheral paint film so as to better connect the newly sprayed paint surface with the original vehicle paint surface; the slope inclination is 15-20 deg.
H. Spraying a middle coating primer, namely spraying the middle coating primer on the upper layer of the epoxy primer of the sheet metal part or the damaged sheet metal part in the step F, and baking; when the middle-coating primer is sprayed, the part which does not need to be sprayed is required to be shielded;
I. polishing the middle coating primer, namely polishing the middle coating primer until the height of the middle coating primer is the same as that of the original vehicle paint surface, and confirming the flatness;
J. paint mixing, namely mixing the automobile finish for later use to avoid color difference;
K. and (3) spraying finish paint, namely adding the adjusted finish paint into a spray gun tank, and starting to uniformly spray the finish paint on the sheet metal part after adjusting the air pressure, the paint output and the spray width of a spray gun.
The sheet metal part leveling method in the step D comprises the following specific steps: a. firstly, transversely comparing the sunken parts; b. disassembling damaged parts and inner decorations; c. starting fixed point finding by using a long repairing rod, and starting repairing a large-area recess; the individual super-huge depressions can be repaired by adopting glue injection drawing; d. carrying out advanced comparison to find out a deeper dent, and restoring the dent from different positions by using restoring rods with different lengths and adopting a jumping point finding method; e. aiming at the damage of the ridge part, a sharp-pointed bent repairing rod is used for reconstructing the ridge; f. the small concave points are treated, and the surface is carefully repaired by using a plastic pen to ensure that the car body is flat and smooth; g. and (4) performing fine treatment to ensure that the arrangement and the size of the repaired place are the same as those of the original paint line of the paint surface.
The specific working process and the effect thereof are as follows: 1. the scheme adopts the tin bar for coating and scraping, and does not adopt putty as filler, so that various damages caused by using the putty are avoided from the source when the repair work of the deformed metal shell of the automobile is realized;
2. in the repairing process, tin is used for replacing putty for filling, so that the damage of the drawing putty to the car body is effectively avoided, the intensity of the repaired car body is high, the flatness is high, the color is bright, the car body is not easy to crack and deform, and the value of the car is guaranteed to the maximum extent;
3. the original factory car paint is not damaged, the appearance of the original car is restored to the maximum extent, and the strength of the original car is not damaged.
The above description is only an example of the putty-free sheet metal method, and the common knowledge of the known specific structure, characteristics and the like in the scheme is not described too much here. It should be noted that, for those skilled in the art, on the premise of not departing from the structure of the putty-free sheet metal method, several modifications and improvements can be made, and these should also be regarded as the protection scope of the putty-free sheet metal method, and these will not affect the effect of the implementation of the putty-free sheet metal method and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (5)
1. A putty-free sheet metal method is characterized by comprising the following steps:
A. sheet metal part disassembly, namely detaching the sheet metal part at the damaged part of the collided vehicle from the original vehicle body;
B. damage confirmation, namely after cleaning a damaged part, confirming the damage degree and estimating the repair cost;
C. removing an old paint film, namely polishing the original car paint at the damaged part until an iron plate layer and an aluminum plate layer are exposed;
D. leveling a sheet metal part, namely leveling the concave part as much as possible by adopting a corresponding sheet metal tool according to the damage degree of the sheet metal part; after leveling operation, finely adjusting the flatness of the surface of the sheet metal part;
E. reducing treatment, namely eliminating tensile and extrusion stress generated in the process of flattening the metal through reducing treatment, and keeping the rigidity and the strength of the sheet metal part;
F. scraping a tin bar, namely smearing epoxy primer on the sheet metal part or the damaged sheet metal part, cleaning and deoiling the sheet metal part or the damaged sheet metal part smeared with the epoxy primer, and scraping the tin bar; then, polishing is carried out, and a punching line is confirmed;
G. polishing the feathery edges, namely polishing a buffering slope surface at the connection part of the damaged part and the peripheral paint film so as to better connect the newly sprayed paint surface with the original vehicle paint surface;
H. spraying a middle coating primer, namely spraying the middle coating primer on the upper layer of the epoxy primer of the sheet metal part or the damaged sheet metal part in the step F, and baking;
I. polishing the middle coating primer, namely polishing the middle coating primer until the height of the middle coating primer is the same as that of the original vehicle paint surface, and confirming the flatness;
J. paint mixing, namely mixing the automobile finish for later use to avoid color difference;
K. and (3) spraying finish paint, namely adding the adjusted finish paint into a spray gun tank, and starting to uniformly spray the finish paint on the sheet metal part after adjusting the air pressure, the paint output and the spray width of a spray gun.
2. The putty-free sheet metal method of claim 1, characterized in that: and F, using lead-free environment-friendly tin bars as the tin bars, wherein the tin content of the tin bars is 99.3%.
3. The putty-free sheet metal method of claim 1, characterized in that: and H, when the middle-coating primer is sprayed in the step H, shielding the part which does not need to be sprayed.
4. The putty-free sheet metal method of claim 1, characterized in that: and in the step C, uniformly collecting the polished old paint films.
5. The putty-free sheet metal method of claim 1, characterized in that: in the step G, the slope of the slope is 15-20 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811479914.5A CN111266276A (en) | 2018-12-05 | 2018-12-05 | Putty-free metal plate method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811479914.5A CN111266276A (en) | 2018-12-05 | 2018-12-05 | Putty-free metal plate method |
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| Publication Number | Publication Date |
|---|---|
| CN111266276A true CN111266276A (en) | 2020-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201811479914.5A Pending CN111266276A (en) | 2018-12-05 | 2018-12-05 | Putty-free metal plate method |
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| CN (1) | CN111266276A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112874490A (en) * | 2021-01-22 | 2021-06-01 | 天津鸿蒙智造科技有限公司 | Putty-free restoration method for restoring automobile appearance data |
| CN113953225A (en) * | 2021-10-12 | 2022-01-21 | 南京锐众汽车服务有限公司 | Metal plate repairing and detecting method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039266A (en) * | 2010-11-08 | 2011-05-04 | 常熟市普利擎汽车维修保养有限公司 | Vehicle surface deep scratch repairing process |
| CN104624458A (en) * | 2015-02-15 | 2015-05-20 | 无锡市崇安区科技创业服务中心 | Automobile paint repair method |
-
2018
- 2018-12-05 CN CN201811479914.5A patent/CN111266276A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039266A (en) * | 2010-11-08 | 2011-05-04 | 常熟市普利擎汽车维修保养有限公司 | Vehicle surface deep scratch repairing process |
| CN104624458A (en) * | 2015-02-15 | 2015-05-20 | 无锡市崇安区科技创业服务中心 | Automobile paint repair method |
Non-Patent Citations (3)
| Title |
|---|
| 刘树伟等: "《汽车服务工程》", 30 September 2015, 北京理工大学出版社 * |
| 宋森等: "《高级汽车修理工自学读本》", 30 June 2009, 金盾出版社 * |
| 李新起主编: "《汽车车身修复技术》", 31 January 2014, 中央广播电视大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112874490A (en) * | 2021-01-22 | 2021-06-01 | 天津鸿蒙智造科技有限公司 | Putty-free restoration method for restoring automobile appearance data |
| CN113953225A (en) * | 2021-10-12 | 2022-01-21 | 南京锐众汽车服务有限公司 | Metal plate repairing and detecting method |
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Application publication date: 20200612 |