Depending on exactly what wavelength the wave has, the spectrum of solar radiation can be divided into seven radiation segments - X- rays , gamma radiation, visible light, radio waves, microwaves, infrared radiation and visible light. The human eye is able to perceive only "visible radiation." In our country this is called light. His unusually striking example is the rainbow, where a very ordinary white color is laid out in certain segments. Is it an infrared camera?
Infrared radiation was discovered at the very beginning of the 19th century. It represents
electromagnetic radiation occupying the spectral range, which lies in the boundary between the red light, which we can see and short-wave radiation. Today, do-it-yourself infrared cameras are increasingly being manufactured. Infrared radiation can be divided into three ranges:
- Longwave.
- Medium wave.
- Shortwave.
Artificial sources of such waves can be incandescent lamps, ceramic or metal stoves, gas burners, spirals, etc. Currently, infrared camera is widely used in various areas of our
Everyday life. This is cosmetology, and electronics, and medicine, and the food industry. Based on infrared radiation, many third-party devices are performed - currency detectors, remote controls, heaters and spotlights.
A promising and relevant area of application of the thermal energy of these waves is the drying and sterilization of various products and materials. An infrared drying chamber helps to dry and sanitize paints and varnishes and food products. In industry, mainly three drying methods are used:
- Thermoradiation method (infrared radiation is used).
- Convective method (using hot air).
- Combined.
An infrared camera helps with any type of enamel and paint, including water-soluble and acrylic. In the process of such drying, paint and varnish materials pass from a liquid to a solid state, chemists call this curing. During drying in the convection chamber, the upper coating layer first dries and heats up, subsequently preventing the exit of the solvent.
In order to correctly choose an infrared drying device, you need to pay attention to many factors that can affect the process. First of all, this is the maximum possible heating that an infrared camera can allow. In addition, the maximum heating of the substrate of one or another material, the power that the energy source has, as well as the mass and size of the product to be dried.
Among other things, do not forget that the drying time directly depends on the color that the paint has and its composition. This is because the reflectivity of different materials may vary. Light rays do not absorb light colors and reflect only part of them, which is why they will take a little longer to dry. At the same time, metallic paints can enhance this effect. They contain particles of aluminum, reflecting rays like a mirror. Dark paints dry much faster.