What is the basic process of automotive sheet metal painting? What are the steps required for automo

After the accident vehicle enters the factory and the price is priced, the sheet metal master gets started with 1 dismantling (with insurance, etc., without direct drying).

Sheet metal deformation parts of the overall correction of the calibration of the suitability of each part after passing the fine appearance as smooth as possible.

Spray paint, scrape putty, polish after drying (some masters are used to scraping 2 or 3 times and then polish together) After the overall leveling, then scrape is to fill the eyes, there can be no trachoma, and finally it is spray paint (a good factory will polish, and a bad one is not necessarily).

A set of whole, not a sentence or two can be said clearly, there are too many aspects involved, and sometimes there will be a master of the engine, the ground, and the electrical appliances to get started.

I don't know how to ask questions.

1) Scrape putty. After cleaning and degreasing the damaged parts of sheet metal coated with epoxy primer, they are scraped with putty, which is often referred to as putty. After the putty is dried, it is sanded, and the stamping line is confirmed.

2) Spray primer. After sanding, the putty is cleaned and degreased, the primer is sprayed, and the baking is dried. When spraying primer, pay attention to the necessary shielding of the parts that do not need to be sprayed.

3) Primer in sanding. The primer is sanded to the same height as the original paint surface to confirm the flatness.

4) Paint mixing. Although the original paint is generally available in the authorized service stores, the color of the topcoat is different from the original paint after the vehicle has been used for a long time, so it is necessary for the painter to manually adjust the paint.

5) Spray the topcoat. Add the adjusted topcoat to the spray gun can, adjust the air pressure, paint output and spray width of the spray gun, and start to spray evenly on the sheet metal parts. Different topcoats have different processes when spraying.

The above 5 methods are recommended by your car micro butler little thumb car maintenance.

Scraping putty - drying - sanding - painting - drying - painting - ok

1. Sheet metal correction. It is to do the preliminary shaping work for the automobile sheet metal painting;

2. Scraping ash (molding). After the sheet metal correction of the car body, there are some defects that can not be compensated for by sheet metal work, even if it is replaced with new parts, there will be unsatisfactory **, in order to achieve more and more perfection, it is necessary to compensate for the defects with the process technique of sculpture;

3. Automobile sheet metal painting: We usually divide the automobile sheet metal painting into 3 steps;

a. First primer: fill the sand marks and micropores at the bottom of the workpiece, increase the adhesion of the lower coating, and also have the effect of defect indication. -

b. Primer: Prepare a well-lubricated working surface for the topcoat, complete the last process of all primer work, increase the adhesion of the participating layer and have a certain isolation effect, so as to ensure that the quality of the topcoat is not disorderly.

c. Topcoat: Topcoat is divided into single-layer paint and multi-layer paint, which is the color determination layer and the decoration maintenance layer.

4. Sheet metal spray paint finish.

1. Sheet metal correction, which is the preliminary work of automobile painting, shapes the place that needs to be painted;

2. Scraping ash also becomes molding, and there are some defects that cannot be compensated for after the car body is corrected by sheet metal, in order to be more refined, it is necessary to use the process and technique of sculpture to compensate for the defects;

3. Automobile sheet metal painting: Automobile sheet metal painting is usually divided into three steps, the first step, the first primer treatment: fill the sand marks and micropores at the bottom of the workpiece, increase the adhesion of the lower coating, and also have the effect of defect indication; The second step is the disposal of the primer in the middle coat:

Prepare a well-lubricated working surface for the topcoat, complete the last process of all primer work, increase the adhesion of the participating layer and have a certain isolation effect, so as to ensure the quality of the topcoat; The third step, topcoat spraying: topcoat is divided into single-layer paint and multi-layer paint, which is the color definite layer and the decoration maintenance layer;

4. Sheet metal spray paint paint treatment: paint treatment is the last process of topcoat, and the above defects will be dealt with after the paint surface is solidified;

5. Stop grinding with fine-cut wax (silicone-free), dispose of the coarse wax traces, then treat with a restorative to achieve a perfect luster, and then use a mirror treatment agent to thoroughly clean the halo and scratches to make the vehicle more rounded and shiny.

The traditional sheet metal painting process of Little Thumb Auto Repair generally requires the following processes.

First, the sheet metal calibration is for the car sheet metal painting for the preliminary shaping work.

Second, scraping (molding) car body after sheet metal correction there are some defects that can not be compensated for sheet metal work, even if it is replaced with new parts, there will be unsatisfactory **, in order to achieve more perfect and refined, it is necessary to use the sculpture technology to compensate for the defects.

3. Automobile sheet metal painting: We usually divide the automobile sheet metal painting into 3 steps.

1. First primer: fill the sand marks and micropores at the bottom of the workpiece, increase the adhesion of the lower coating, and also have the effect of defect indication. -

2. Primer: Prepare a well-lubricated working surface for the topcoat, complete the last process of all primer work, increase the adhesion of the participating layer and have a certain isolation effect, so as to ensure the quality of the topcoat is not disorderly.

3. Topcoat: Topcoat is divided into single-layer paint and multi-layer paint, which is the color sure layer and the decorative maintenance layer.

Automotive sheet metal painting is a car restoration technology. It is mainly used to repair the deformed part of the metal shell of the car. For example, if the body shell is knocked out of a pit, it can be restored to its original state by sheet metal, and then by spraying special paint, the deformed metal surface of the car can be restored to its original state, and it will be as bright as the original Li Hall wheel.

The basic process of automotive sheet metal painting is usually divided into four steps:1Depending on the severity of the vehicle collision, a repair plan is developed accordingly.

If it involves serious components such as engine, gearbox, circuit, etc., it needs to be dismantled and repaired by personnel from the machine repair department. 2.Sheet metal correction is the pre-shaping work of automobile sheet metal painting.

The distorted body needs to be mended and corrected. In order to be more perfect and accurate, after the sheet metal is corrected, it is also necessary to scrape and shape and repair the defects with sculptural techniques. 3.

Automotive sheet metal painting is usually divided into three steps. The first primer is to fill in the sand marks and micropores for the underlying coating. The intermediate primer increases the adhesion of the intermediate layer and has a certain isolation effect to ensure the quality stability of the topcoat.

Topcoat is the layer that determines the color and the decorative protective layer, which is divided into single layer paint and multiple layers of paint. Silver powder series paint and pearlescent series paint use different spraying processes. 4.

In the final body paint treatment and painting step, the paint surface is dried and cured before the defects on it are treated. Use sandpaper to level and polish, then polish with coarse wax composed of pumice stone or clay, polish with fine wax to remove traces of coarse wax, and finally treat with reducing agent to achieve perfect gloss. The above is the basic process of automotive sheet metal painting.

(1) Confirmation of damage. After cleaning up the damaged parts, confirm the extent of the damage to determine the repair method.

2) Sheet metal parts are removed. (1243) Cutting old paint film on the car body, etc. Sand the original paint of the damaged part until the layer of iron is exposed.

4) Flatten sheet metal parts. Depending on the degree of damage to the sheet metal part, the concave part is flattened using the corresponding sheet metal tool. After the leveling operation, the surface of the sheet metal parts should be fine-tuned for flatness.

5) Fireproof and closed treatment. The tensile and extrusive stresses generated in the process of restoring the original shape and thickness of the metal are eliminated by fire treatment to maintain the stiffness and strength of the sheet metal parts.

6) Oxygen treatment is also carried out. After hammering and stretching, the reoxygenated paint inside the plate will fall off or ablate, so a layer of reoxygenated paint should be applied inside the plate.

1.Determine the scenario:

Before starting the body painting, the maintenance master needs to determine the repair plan according to the degree of damage to the vehicle, and different solutions will be adopted to different degrees.

2.Sheet metal forming:

The deformed parts are cut, polished, stretched, fired and deoxygenated. It is important to know that sheet metal is not only to restore the original appearance of the vehicle, but also to maintain the hardness of the metal material as much as possible.

3.Scraping and shaping:

After the sheet metal is corrected, the maintenance master will shape the waistline of the body and adjust its flatness by scraping and shaping the body.

4.Painted surface:

The painting process is more complex and requires many processes, such as first primer spraying, intermediate primer spraying, paint mixing, topcoat spraying, paint drying, etc., and it must be carried out in a dust-free environment.

5.Paint surface treatment:

Although it has been painted, there are still small blemishes, so the repairman will use extremely fine beauty sandpaper, or polish it with a polisher to restore the luster of the body.

Millions of car purchase subsidies.

1. Determine the plan

Before starting sheet metal spraying, the maintenance master needs to determine the maintenance plan for the degree of damage to the vehicle, and different solutions will be adopted for different degrees.

2. Sheet metal shaping:

The deformed parts are cut, polished, stretched, fired, and oxygenated, and the sheet metal is not only to restore the original appearance of the vehicle, but also to maintain the hardness of the metal material as much as possible.

3. Scraping ash shaping:

After the sheet metal is corrected, the maintenance master will shape the waistline of the body and adjust its flatness by scraping the ash and shaping the body.

4. Spraying paint:

The process of spraying paint is relatively complex, requiring multiple processes such as spraying head primer, middle primer, paint mixing, spraying topcoat, and drying paint, which must be carried out in a dust-free environment.

5. Paint treatment:

Although it has been painted, there will still be small imperfections, so the repairman will use very fine beauty sandpaper or use a polishing machine to polish it to restore the luster of the body.