Industries in the manufacturing and heavy machinery sector rely on various specialised techniques for painting surfaces. One of the preferred techniques used today is, of course, spray painting.
We wrote an earlier post on spray painting but today we’d like to talk in a bit more detail about the different types of spray painting techniques available.
Spray painting is important to a number of industries for coating a variety of surfaces from furniture to automobiles to even airplanes. During the process compressed gas is used to atomise and guide the paint particles to achieve an overall clean and even coat.
The apparatus required is a compressed air system, a pressurised paint container and a spray painting gun. With technological developments spray painting techniques have also evolved to provide high quality and high performance surface coats. One of the main reasons why various manufacturing companies approach PRV Engineering Ltd. is because of the state of the art spray painting technologies we offer.
Industrial Spray Painting: Types of Techniques
High Volume Low Pressure (HVLP) – Similar to the conventional spray painting system, the HVLP system also uses a compressor for supplying air, however the spray velocity is reduced. Here higher volumes of air are used at low pressure (8 to 10 psi) to atomise and propel the paint particles onto the surface being coated. Also, this method allows for reduced over-sprays as well as material consumption. This technique is generally used in the furniture finishing and the automobile industry.
Low Volume Low Pressure (LVLP) – LVLP spray painting systems also work at low pressure, although here the volume of air used is also low. A lower volume further helps to improve transfer efficiency of the spray guns, ensuring that a larger amount of the coat gets to the target surface. Besides that it also reduces the consumption of the compressed air.
Electrostatic Spray Painting – Also known as powder coating, this method makes use of compressed air to atomise and propel the paint particles to the target. However, here the atomised particles are charged electrically. Since all the particles have the same charge, they repel each other and spread out evenly as they are sprayed out of the spray gun. The target surface is either grounded or oppositely charged and hence attracts the paint particles resulting in a cleaner and more even surface coat.
As one of the leading engineering services, PRV Engineering Ltd., has been providing customers with cutting edge technology for a variety of spray painting requirements. Contact us today to see how we can help you.