What does it mean to spray paint wet spray dry spray for auto repair

Dry spraying means that the topcoat is diluted a little, the air output and air pressure of the spray gun and the matte surface are adjusted to be even, and then slowly sprinkled, like a drizzle, and then continue to spray when it is almost dry, until it is completely covered and cannot be sprayed; Wet spraying is the opposite of dry spraying, the first paint is not dry and then sprayed, it is easy to spray wet and shiny, which is the so-called wet spray. Also, in the process of spraying paint in the future, it is best to dry spray, so the effect should be good, you can not be in a hurry when spraying paint, you must take your time, it is a fine job, you must be careful and careful, so you can't try to be fast, in a hurry to cover the putty, sometimes wet spray will lead to being bitten by the spray surface, in short, depending on your personal situation.

Zhengzhou North Automobile Repair School!!

The dry spray is not pinched to the end when the plate machine is sprayed, the amount of paint is very small, the gun is slightly faster, the paint is like snow, the wet spray is the spray gun pinched to the end, the gun is slightly slow, the paint sprayed has brightness, just like rain, suitable for spraying ** to prevent paint flowers, I hope mine will help you.

Dry spray is sprinkled spray! Wet spray is pressure spray! Dry spray is sprayed with a slightly larger air pressure and a slightly farther away from the full opening of the fan surface, and wet spray is a slightly smaller air pressure and slower walking.

Sheet metal is mainly used for body dent repair, body gap adjustment, body parts disassembly, accident maintenance, etc.! Spraying is mainly for the repair of damaged paint on the body! Now car maintenance is mechatronics, and sheet metal spraying is not separated!

Dry spray paint is coarser and slightly lighter, and wet paint is thinner and slightly darker. Spray paint is generally wet sprayed twice and then dry sprayed once before spraying varnish.

Usually dry spray is sprinkled spray, wet spray is pressure spray, dry spray is a slightly larger air pressure and the fan surface is fully open and a little farther away, wet spray is a little less air pressure, and walk evenly and slowly.

Dry spray (overspray or spray) generally refers to overspray or spray (=overspray), that is, the sprayed particles fail to effectively reach the coated parts, and can also refer to a coating defect, that is, a sandy surface, mainly due to the sprayed mist particles have been partially dried before reaching the sprayed surface, thus causing coating film defects.

Classification of spraying methods

Hand sprayed. Front-line operators are able to spray oil directly on the surface of the product, and it is now currently used for manual coating of defective products after automatic spraying.

Fully automatic spraying.

The product that needs to be sprayed is fixed on the rotatable bracket, and then the bracket is locked on the assembly line, and 100% uniform spraying on the surface of the product has been achieved through the movement of the assembly line and the continuous rotation of the rotatable bracket.

Features: High production efficiency of spraying operation, suitable for manual work and industrial automation production, a wide range of applications, mainly hardware, plastics, furniture, military, ships and other fields, is the most commonly used coating method today.

Spraying operations require a dust-free workshop from one million to one hundred levels, and the spraying equipment includes spray guns, spray booths, paint supply rooms, curing ovens and drying furnaces, spraying workpiece conveying equipment, defogging and waste water, waste gas treatment equipment, etc.

The main problem in spraying is the highly dispersed paint mist and volatile solvents, which not only pollute the environment, are not conducive to human health, but also waste paint and cause economic losses.

High-flow low-pressure atomization spraying is low atomization air pressure and low air jet velocity, and the low atomization coating running speed improves the situation of the coating from the surface of the coated object. The paint application rate has increased from 30% to 40% of ordinary air spraying to 65% to 85%. In light leather finishing, the finish is sprayed on the leather surface with a spray gun or spraying machine.

Hello dry spraying means that the topcoat is diluted a little, the air output and air pressure of the spray gun and the matte surface are adjusted to be even, and then sprinkled slowly, like a drizzle, and then continue to spray when it is almost dry, until it is fully covered and cannot be sprayed; Wet spraying is the opposite of dry spraying, the first paint is not dry and then sprayed, it is easy to spray wet and shiny, which is the so-called wet spray.

Spray a layer of dry spray and then spray, it is dry spray. The first spray is not dry, and the second time is wet spray.

Sheet Spray. Also known as sheet metal painting.

It is a kind of automobile repair technology, which repairs the deformed part of the metal shell of the car, such as the shell of the car body is hit by 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 is restored to the same as other intact places, and it is as bright as ever. <

1. Sheet metal spraying, also known as sheet metal painting, is a kind of automobile repair technology, which repairs the deformed part of the metal shell of the car, such as the shell of the car body is hit by a pit, it can be restored to its original state through sheet metal, and then through spraying special paint, the deformed metal surface of the car is restored to the same as other intact places, as bright as ever.

2. After the car body is corrected by sheet metal, there are some defects that can not be made up for by sheet metal work, even if it is replaced with new parts, there will be imperfections, in order to achieve more perfect precision, it is necessary to use the process of sculpture to make up for the defects, and the car is damaged after deformation and other reasons, its flatness.

Wheel angles and lines, each part needs to be scraped to fill the grinding out, with such a formula to explain: scraping = restore the body skin = mold product = mold processing program, any body skin of the car is stamped by the mold, we repair the body skin is the same as repairing the mold, so we scrape the ash shaping process to be coherent with the mold processing, this is the general painter can not do the work, many painters who have been doing it for many years will sigh a sentence "It is easy to spray a car, It's hard to make a piece of ash, it's hard to grind a ball of ash in ten years" The person who said this may really know what car spraying is.

Dry spraying of automobile paint is spraying, and wet spraying is pressing spraying.

Automobile painting is to coat the surface of the car to achieve the effect of protecting the car. Automobile painting is generally baked paint. In a car factory, the frame and body are welded, and the next process is painting.

The forms are ordinary paint, metallic paint, and pearlescent paint. Automobile painting process: scraping putty, grinding, painting, automotive painting includes:

Ordinary lacquer; metallic paints; pearlescent paint; Varnish; Matte lacquer.

，。。My job is sheet metal painting, and I have worked for 8 years. Haven't heard of dry spray wet spray

But I probably know what you mean, dry spray is not to spray too much when spraying the gun to paint, the effect of the spray is semi-dry, and the wet spray is generally the varnish when the last time to spray solid. That way the brightness will be better. Hope it helps.

<> "The common situation of auto repair sheet metal spray paint is the failure of the stool to seep.

Automobile sheet metal painting is one of the common technologies in automobile maintenance, when the ridge car is damaged, it can be treated by automobile sheet metal painting technology, which can restore the original appearance of the car. Automobile sheet metal painting should generally pay attention to the situation:

1. Is it uneven or smooth as new?

Problem: Sheet metal is a maintenance project with high technical content and multiple processes, which requires the standardization and meticulousness of maintenance work. In the process of sheet metal correction of the collision vehicle in some informal repair shops, due to the unscientific operation method or the unprofessional maintenance tools, the bumpy part of the car body will be uneven after repair, and the image of the vehicle will be greatly reduced.

Method: Specially developed sheet metal repair tools that are more suitable for vehicle maintenance, and formulate more scientific maintenance standards, which are repaired by professional sheet metal technicians, so that the collision parts of the user's vehicle are as smooth as new, and try their best to restore to the original level.

2. Which is better, dry grinding or wet grinding?

Problem: In the car painting process, the treatment of the surface of the car body that needs to be repaired is very important, if the treatment is not rough, not only the surface feels rough and uneven, but also brings the car repair, which directly affects the satisfaction of the car owners with the service. As an important process in sheet metal spray maintenance, the traditional wet grinding process was used for surface treatment in the past, and the quality hazards brought by this process method are increasingly exposed.

Method: In the auto repair shop, the surface treatment is carried out by using the full dry grinding process. The grinding method of pneumatic tools or electric tools used in "dry grinding" can not only effectively absorb the dust generated in maintenance, but also improve maintenance efficiency and ensure the bright effect of the paint surface.

3. Newspaper or "anti-static masking paper"?

Problem: Covering areas that don't need to be painted with newspaper is a common sight for car owners and is a common phenomenon in the automotive service industry. Strictly speaking, the lead ink on the newspaper will penetrate into the surface of the car paint during the high-temperature painting process, resulting in a clear "trace" on the paint surface, which will affect the beauty of the car and even cause color damage.

Such a "consequence" is unacceptable to consumers. This is also a common practice for many roadside shops or non-standard auto repair shops to save costs.

This is part of the use of automotive sheet metal painting. With the improvement of the requirements of automobile technology and the anti-rust treatment of automobiles, many auto repair service industries cannot guarantee it. Therefore, the sheet metal painting had to be upgraded again.

Sheet metal painting is a kind of car repair technology, which is to repair the deformed part of the metal shell of the car, such as the body shell is hit by a pit, you can restore it to its original state through sheet metal, and then through spraying special paint, the deformed metal surface of the car is restored to the same as other intact places, as bright as ever.

We usually divide into 3 steps for car sheet metal painting.

1 primer.

Fill the sand marks and micropores at the bottom of the workpiece, increase the adhesion of the underlying coating, and also have the effect of defect indication.

2 Primer.

It is very important to prepare a complete and smooth working surface for the topcoat, complete the last process of all primer work, increase the adhesion of the intervening layer and have a certain isolation effect, so as to ensure the quality stability of the topcoat.

3 Topcoats. The topcoat is divided into single-layer paint and multi-layer paint, which is the color determination layer and decorative protective layer, and the single-layer paint is commonly known as plain paint, also known as ordinary paint, which can be completed in one layer. Multi-layer paint is divided into silver powder series paint and pearl series paint, divided into double-layer and multi-layer construction process to complete the coating, silver powder paint is made of special aluminum materials, with high protection and outdoor stability and strong observability, pearl series paint is made of mica sheet and shell and other materials through high-tech extraction, is a high-grade paint with rich color and strong decoration.

The spraying quality of the topcoat part is very high, to achieve clean, plump, bright, not hanging, not hanging, uniform gloss, no leakage spray, no flower gun, good leveling, no bottoming, no impetuousness, no color cast, these all aspects are in place, it is indeed not an easy task to do it in one go, and it requires extremely rich experience and fault pre-arrangement ability. (Photo by Dong Peng, Pacific Automobile Network).

Sheet metal spraying is a kind of automobile repair technology, which is to repair the deformed part of the metal shell of the car, such as the shell of the car body is hit by a pit, you can restore it to its original state through sheet metal, and then through spraying special paint, the deformed metal surface of the car is restored to the same as other intact places, as bright as ever.

After the car body is corrected by sheet metal, there are some defects that can not be made up for by sheet metal work, even if it is replaced with new parts, there will be imperfections, in order to achieve more perfect precision, it is necessary to use the process of sculpture to make up for the defects, the car is damaged by deformation and other reasons, its flatness, wheel angle and lines, each part needs to be scraped to fill the grinding and plastic to make early changes, with such a formula: scraping ash = restore the body skin = mold product = mold processing pure judgment program, Any body skin of the car is stamped by the mold, and our repair of the body skin is the same as the repair of the mold, so our scraping and shaping process should be coherent with the mold processing, which is a job that ordinary painters cannot do.

Photo by Zhang Guiye) @2019

The meaning of sheet metal painting is mainly used in car repair, for example, if the body shell is hit with a pit, it is necessary to use sheet metal to restore the deformed part of the car metal shell to its original state, and then use the method of spraying special paint to repair the surface of the car, just like the appearance before being hit.

What should I pay attention to when spraying paint?

1. It is necessary to pay attention to the inspection and treatment of the construction site before painting, so as to ensure the cleanliness of the ground and the sanitation of the wall at the construction site, especially in the open-air construction site, which can reduce the construction process by sprinkling water on the ground, because of the invasion of external sand and dust, which affects the effect of painting.

2. Ensure that the tools used are highly clean, not stained with any dust, water, and oil, and ensure that the car meets the specified process standards before painting.

3. Select the matching paint materials, dilute, filter, and mix colors, and expand the proportion of blending after meeting the standard color plate.

4. When spraying paint, it should be noted that there are many harmful substances in the paint material, so it is necessary to ensure that the workplace has lighting, ventilation, dust removal and anti-virus equipment.

Many people have had the experience of doing sheet metal painting. The question you asked how the effect could be restored to its original appearance after doing it was also something that everyone was entangled and troubled about. At the same time, your question has several levels.

Generally speaking, it is impossible to restore the original appearance: first, because in addition to the assembly plant, other repair shops, including 4 sons, cannot be robotized construction, which is the biggest limitation.