Drying infrared - what is needed and what is special?

One of the most effective and fastest methods of curing paint in industrial conditions is the method of surface treatment of the product by infrared radiation. For this, a special device is used - infrared drying. It is on its technical characteristics that the time during which the paint dries depends on the quality of the paintwork in general. What is drying is infrared and what is remarkable, you can find out here and now.

Methods of curing the paint

At the moment, there are several ways in which devices for industrial purposes quickly dry out after applying a certain layer of paint on them:

· Convective (with the help of a stream of hot air).

· Thermoradiation (using infrared radiation).

Combined (combination of the first two).

Among them, the most effective, of course, is the IR-radiation. Infrared drying (IRT including) allows you to process almost all types of paints and primers, including water-based and acrylic. At the same time, the device allows to significantly harden the process of hardening of the primer or putty. The material that receives the wave radiation passes from the liquid state to the solid state, which is called hardening, in the language of specialists. And for the whole process takes a maximum of 5 minutes.

Technical features

Infrared short-wave drying operates as follows. After connecting the device to a power source (this is usually an alternating electric current) in the tool being processed, the top layer of the paint first heats up, which in turn completely prevents the exit of the solvent. This happens when the short-wave dryer is infrared. Long-wavelength devices transmit their power by convection heating. Thus, the source radiating heat to the surface of the paint and varnish equipment is heated to a temperature of the order of 700-750 degrees Celsius, after which the heating level of the object of drying itself increases only to 40 degrees. As a result, the cooling period of the device will be at least 15-20 minutes, while for hardening the layers of paint it will be necessary to spend up to 1-2 minutes of time.

By the way, the heating temperature in longwave devices is much larger than for shortwave devices. Such drying infrared can be heated up to 1450 degrees Celsius. Consequently, the heating of the drying object also increases. Due to this, the majority of thermal energy (up to 75 percent) emitted by the device falls not on the upper, but on the lower contour of the paint, after which the hardening occurs also with the outer side of the coating.

Where are they used?

Modern drying infrared is used in many sectors of the economy and industry, as it can quickly bring to the desired condition the surface of almost any material: MDF, decorative glass products, metal car bodies and much more. All this makes it indispensable in the industrial coloring of products and mechanisms.