Paint for a spray gun

 

What to use, how to breed?

I want to carry out any finishing work as soon as possible so that the car or the room gets an attractive appearance, and it can be used for its intended purpose. That is why today less and less home craftsmen take up brushes and rollers, and prefer painting from a spray gun. This technology allows you to get a perfectly smooth and smooth coating in a matter of minutes, and at the same time spend a minimum of effort. But in order for the result to meet expectations, you will have to follow certain rules. For example, it is correct to determine which paint is suitable for a spray gun in your case, and how to properly dilute it. This is what you will learn from this article.

Why is it necessary to properly dilute the paint?

 Everyone who wants to use this tool during finishing works should know how to dilute paint for a spray gun.

 It is necessary to find out all the information and use it correctly for the following reasons:

 Too viscous, thick paint is difficult to evenly distribute over the desired surface with a thin layer. An increase in the thickness of the layer will entail an extension of the drying time and an overspending of the material.

When processing vertical or inclined surfaces with too thick or liquid paint, ugly smudges are formed, which can only be corrected by a new coloring.

Most models of spray guns, especially inexpensive ones, will not cope with the supply of thick paint. The internal parts will be clogged, and the flow will either be uneven, or the paint will not come from the device at all.

Too viscous paint, even with careful surface preparation, will not fill in small irregularities, roughness, microcracks. As a result, the coating will not be smooth, and over time, corrosion may form in the defects of the surface, dust and debris may accumulate.

Too diluted, liquid paint will not give the desired external effect. You will have to paint with a large number of layers, and as a result, the coating will not be as strong as you would like, and you will have to spend much more time on painting.

 Important! The paint for the spray gun must be of appropriate quality, regardless of how expensive or cheap the tool model you have purchased. With this approach, if you follow the coloring technology, you will in any case be able to realize your idea and paint the desired surface qualitatively.

 What paints are suitable for a spray gun?

 The modern paint and varnish products market offers a wide range of finishing solutions. Many of them can be safely taken for refueling the spray gun. Paints of such compositions are perfectly suitable for this purpose:

 alkyd;

acrylic;

water-based emulsions;

oil-based;

Important! What kind of paint for an electric spray gun to give preference to, determine based on what exactly you are going to paint:

 for wooden surfaces, oil or acrylic solutions are best suited;

for the car — nitrogenous or alkyd mixtures;

water-based, acrylic and alkyd compositions are often used for wall decoration.

 The main selection criteria are the expected result of strength, resistance to adverse effects, durability, attractiveness, and, of course, the cost of the paint itself.

 Paint solvents-classification

 To bring the paint for the spray gun to the desired consistency, you need to choose the right solvent. To do this, if you thoroughly approach the process, determine the liquid you need according to the criteria set out below.

 Important! A simpler and less expensive option is to use special branded solvents recommended by the paint manufacturer. This way you will definitely be able to avoid mistakes and will not have to choose the best solvent yourself in a practical way. But, be prepared for the fact that saving time and effort in this case will cause a lot of money spending.

 Component composition

 Each type of paint has its own component composition, in which there is a certain amount of solvent and the coloring substance itself. According to this principle, the classification of paints is carried out as follows:

 low-filled;

medium-filled;

highly filled.

 Important! Paints of the first type are not recommended to be diluted with a large amount of solvent. In some cases, up to 30% of the solvent volume can be added to highly filled ones. If you are only faced with marking the fullness of the paint, keep in mind that the gradation in the direction of reducing the indicator looks like this:

 VHS;

UHS;

MS;

HS;

HD;

LS.

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 Type of solvent

 Another important factor when choosing a suitable solvent is its polarity. According to this criterion, only 2 types of compositions are distinguished:

 non-polar;

polar.

 Important! Since the composition of the paint and the solvent itself can include quite a lot of substances, it is impossible to accurately determine the polarity of the composition only by one's own intuition or by one component marked in the list. We will also take into account the fact that not all manufacturers indicate the full composition of the mixture on the packaging, justifying this as a trade secret. Therefore, in this case, it is appropriate to choose a combination of paint and solvent exclusively by practical means or by an expensive method of laboratory research. But, it is unlikely that anyone will agree to go to the latter option, performing work exclusively of a one-time nature for their own needs. A simpler option is to trust the recommendations of those who have already tried out various options and selected the right solvent. You will get acquainted with them later in this article.

  Temperature conditions during coloring

 When diluting the paint for the spray gun, it is necessary to take into account the temperature conditions in which you will carry out the work and how soon after preparing the solution you will start painting.

 Important! In order to find out the exact data on the viscosity and the rate of solidification of the paint, you can also use a special device-a viscometer.

 vz-246 alum

 Learn how to use it correctly from the video instructions below.

 Regarding this rule, the recommendations of specialists are as follows:

 Choose fast solvents if the staining will occur at a temperature below 18C.

Normal — if the temperature indicator of 20-25 degrees is stable.

Slow — if it is very hot indoors or outdoors and the temperature exceeds 25C.

 Important! Take into account the additional nuances that relate to the color of the paint. It is better to dilute shiny "metallic" or "mother-of-pearl" with slow solvents. Then you will be able to avoid the effect of clouds and uneven layers.

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 Useful recommendations for choosing a solvent

 If you are in doubt about your choice, use one of the following solvents for a specific type of paint:

 Acrylic — special solvents, P-12 or P-651.

Alkyd — P-4, xylene, toluene.

Nitroemal is a special solvent recommended by the paint manufacturer, or P-646.

Water-based-ordinary distilled water, alcohol, ether are suitable for dilution.

Oil-drying oil, oil varnish.

 Important! The standard rate for breeding is from 5 to 25%. As for the consumption of the paint itself, these data are indicated on the packaging by the manufacturer himself. If the paint is applied correctly with a spray gun, these values may decrease slightly.

 rastvoriteli

 Application of the spray gun

 Painting with a spray gun with water-based or any other paint is not a complicated process. Detailed instructions for the operation and configuration of the tool itself are usually attached to the equipment in the passport.

 Important! Carefully study it before you start doing the work. Try to pre-fill the tool so that you thoroughly understand how it functions.

 How-to-use-a spray gun2

 During the coloring procedure itself, be sure to consider the following rules that will help you avoid technological errors and overspending of the mixture:

 Prepare the surface to be painted with high quality — seal up cracks and holes, remove construction debris, traces of rust and dust, sand the base.

Wipe the surface with a suitable composition:

when using acrylic or latex paint, use soap and water;

when applied with oil — white spirit.

Wipe with a clean cloth moistened with water, wait for the surface to dry.

Protect the adjacent surfaces with a film, and yourself with a respirator, gloves and protective clothing.okrashivanie_nebolshikh_ploshchadei

When painting the ceiling, gradually move from one area to another. If a lot of paint is applied to one area of the surface, the solution will drip down or harden in the form of smudges.traektoria_pri_porkaske

Direct the jet strictly perpendicular to the surface, in a circular motion. 102

Before applying the next layer, make sure that the previous one is dry. According to the standards, the technical pause should be at least 6-12 hours (the time depends on the composition of the paint).

  Important! You can learn how to paint correctly with an electric spray gun in this video.

 Conclusion

 Now you know what paints can be used for a spray gun and how to do it correctly. If you are still in doubt whether to use such a tool, read the technical data of different models of spray guns, with the pros and cons of their use. Be sure to take into account the level of your own knowledge and skills, it is quite possible that painting with a spray gun is the only right option for you if you want to perform finishing work efficiently and with your own hands.

 Spray painting method

 Spray painting consists in spraying paint under pressure in the form of small drops (aerosol).

 For this type of paint application, a spray gun is required, in which the coloring substance (paint, varnish) is broken into small droplets under the influence of compressed air. The paint flies out of the nozzle through small holes placed in the middle (round jet) or on the sides (flat jet).

 Spray paint

 Equipment required for spray painting:

 - compressor:

For painting in residential areas: a compressor with a capacity of 1.5 hp, a tank with a volume of 50 liters.

For painting car bodies: a compressor with a capacity of 3 hp, a tank with a volume of 100 liters.

 - spray device (a can of paint located under the spray gun):

it is recommended rather for painting small surfaces.

 - gravity spray device (the paint cylinder is located at the top of the spray gun):

used for more difficult work (for example, painting the base or painting the walls).

 - high-pressure wire connecting the spray gun to the compressor:

between them there is a pressure regulator (coloring occurs at a pressure of 3 bar), as well as a filter (removal of water, oil and other particles)

 The spray painting method is used when:

 body painting (cars, motorcycles, camping trailers),

painting the sides of ships,

painting of elements of residential premises (walls, doors, radiators),

coloring of some toys,

spraying of insect repellents on wooden surfaces (carpentry, etc.).

 Advantages of spray painting:

 - Speed

- Perfect application result

- Economical consumption of drugs

 All these actions can be performed with an electric spray gun.

 2needed equipment

 Airless paint spraying

 ADAPTATIONS

 Devices for spraying paint

 3 Councils on application

 Preparation of the base for painting

 PAINTING IN THE HOUSE AND ON THE PLOT

 1. The paint should be sprayed in a ventilated area.

 When painting on the street, you should spray the paint in sunny weather, preferably in the morning (before the appearance of insects that can stick to the paint).

 2. All elements and objects that are not intended for painting (windows, walls, floors, furniture) should be covered with film or newsprint.

 3. When painting doors, remove the doors from the box and paint in a horizontal position. Also, pre-remove the handles from the doors

 4. When painting the door frames, you should carefully cover the walls around them.

 5. Before painting the radiators, they need to be dismantled and then plug all the connections.

 6. Before painting the gate, it is necessary to install a gate valve on the back side of the spray gun, which prevents paint splashing.

 7. When painting windows, seal the edges of the window with a protective tape.

 BODY PAINTING

 1. Clean the surface intended for painting. Polish the places covered with rust or bubbles with sandpaper. Cover up all cracks and scratches.

 2. If the painting is carried out in the garage, it is necessary to clean the floor (vacuum) and moisten it. Cover the floor with newspapers or plastic wrap. Do not allow drafts.

 3. Close the elements that are not intended for painting.

 4. Before painting, clean the surface with a cloth soaked in solvent.

 4 Paint preparation

 Shake the paint jar before using it.

 Important!

It is necessary to bring the viscosity of the paint in accordance with the parameters recommended by the manufacturer.

 If the paint is too thick, the painted surface may become rough. If the paint is too liquid, smudges may appear. The viscosity of the paint is controlled by a viscosity meter:

 Fill a small jar with paint. Calculate the time of emptying the container. Top up the solvent until the time given below is obtained (the time of emptying the one-liter container):

 Acrylic paint: 13-15 seconds

 Paint based on modified natural oils (for the base): 21-24 seconds

 Emulsion paint: 40-45 seconds

 Polyurethane paint: 35-40 seconds