Induktsioonsoojendid

Induktsioonsoojendid, also known as induction heaters, are devices that utilize electromagnetic induction to heat conductive materials. The principle behind their operation involves generating an alternating magnetic field using a coil, which then induces eddy currents within the workpiece. These eddy currents, due to the electrical resistance of the material, generate heat. The intensity of the heating is dependent on the frequency of the alternating current, the magnetic properties of the material being heated, and the geometry of the workpiece and the induction coil.

Induktsioonsoojendid are widely used in various industrial applications due to their efficiency, speed, and precise control over heating. Common applications include heat treatment processes such as hardening, tempering, and annealing of metals. They are also employed in brazing and soldering, where localized heating is required to join components without affecting surrounding areas. Furthermore, induction heating finds use in melting metals, especially in smaller-scale foundries and for specialized alloys. The contactless nature of induction heating eliminates the need for direct contact with a heat source, preventing contamination and surface damage.

The design of an induktsoonsoojendi typically consists of a power supply that generates a high-frequency alternating current, an induction coil made of conductive material (often copper), and a workpiece placed within or near the coil. The power supply converts mains electricity into a high-frequency current, which is then fed to the coil. The coil's geometry is crucial and is designed to match the shape and size of the workpiece to optimize the magnetic field coupling and ensure efficient heat transfer. Safety features are incorporated to protect operators and prevent damage to the equipment.