Choosing a gun for powder painting

When it becomes necessary to paint a particular part, paint the surface, the choice often stops at powder painting. Equipment that looks like a pistol is used as a spray gun.

Painting with a powder gun has its own characteristics compared to using liquid or spray paints. It's all about the painting mechanism. Powder paints are applied to surfaces by electrification... Due to this, paint particles are attracted and fit as tightly as possible on the object to be painted. Another difference from standard staining is the need to use high and low temperatures to fix the color layer.

Metal objects painted in this way are placed in an oven and heated to near their melting point. This allows you to create a dense layer that increases the strength and wear resistance of the metal. Conversely, plastic items are cooled.

In addition to a durable curing coating, powder paints are used more economically than liquid paints... Thus, particles that have not settled on the objects to be painted are retained on the grids of the painting booth. Then they can be used again for painting. In addition, the pigment particles do not contain toxic substances released into the atmosphere. Thus, it makes them less harmful compared to other types of paints. And also applying a paint coating with a spray gun relieves people from direct contact with the materials of work. That's why processing with powder paints is also safer for humans.

Powder paints can be used not only in special chambers or in industrial plants, but also at home. Spray guns are divided into several types, depending on the mechanism of operation.

The electrostatic powder gun is deservedly the leader among other models. It's all about the versatility of the paints used. All types of polymer paints are suitablesuch as PVC or polyurethane. The special design of the apparatus provides a high power to charge the particles. Thereby an electrostatic gun can paint fairly large structures.

Staining with such a device eliminates the need to heat the object being processed. And also the convenient spray nozzle allows you to spray paint economically. When properly processed, the coating created with an electrostatic gun will be only 0.03-0.25mm thick. The only drawback of this type of spray gun is the high price.

This type of powder coating equipment has a number of features that make it inconvenient to use. The absence of a particle generator affects the power of the charge, which is formed by the friction of material particles against each other. That's why not every paint is suitable for a tribostatic spray... Some polymer pigments have a high density, which reduces the charging power.This will ultimately affect both the thickness and texture of the layer.

This kind of powder spray is only suitable for painting surfaces of simple shapes. And also to work with such equipment, metal is required that can withstand high temperatures. Since to apply paint with a fluidized spray, you will need to warm up the surface. The use of this device will lead to a significant consumption of materials, but with its help the layer thickness is easier to adjust.

In order to choose the right equipment, you need to decide on the scale of painting. If a lot of parts need to be painted, it is better to give preference to an electrostatic spray gun. And you also need to take into account the painting of the parts of what shape will be produced. If difficult surfaces need to be painted, a tribostatic gun should be used. An important factor when choosing a sprayer is the desired thickness of the paint layer. Tribostatic equipment creates a thicker coating than electrostatic equipment.

If you plan to paint only metal objects, you should pay attention to the fluidized device. It is necessary to take into account the dimensions of the objects themselves. After all, a tribostatic pistol is not designed for long-term continuous use. Whereas the electrostatic apparatus does an excellent job of continuous operation. When choosing a powder paint gun, you need to pay attention to the resources available.

Despite the fact that powder paints are harmless, working with them has certain nuances.

• Before you start painting, you need to put on clothes for painting., goggles, respirator and rubber gloves.
• Painting should be done in well-ventilated areas.... It is advisable to carry out all work with paint materials on the street.
• Some paints contain flammable substances. That's why it is important not to work with powder paints near fire.
• Before starting work, it is necessary to check the spray gun for serviceability.... And also it is necessary to make a careful adjustment of the air flow by setting the desired spray parameters.
• If you plan to paint metal products, the room must be grounded... And also before starting work, metal parts must be degreased.
• When choosing a paint for coloring, you should carefully read its characteristics.... After all, the density of matte and glossy coatings is different. This can affect the performance of the sprayer.
• When painting, you need to ensure that the spray is at an angle of 90 ° in relation to the part to be painted.