Electromagnetic heating, we also called induction heating, is a kind of non-contact heating mode. Its working principle is to convert electrical power into electromagnetic power through circuit control and then the electromagnetic wave the ferrous material converting electromagnetic power into heat energy, so that the heating goal achieved. The traditional heating is a kind of heating, which transferring not convert heating from the fired resistance wires or gas, has a bigger heating loss during transferring process.
Induction heaters are also highly versatile and can be used for a wide range of heating applications, including melting and casting non-ferrous metals, hardening and tempering of metals, and heating of composite materials.
Designed Around the Heating Zone
In plastic processing equipment, the induction coil is positioned around a metal barrel or pipe. The changing magnetic field heats the metal, which then transfers heat to the material inside. This distinction matters when planning a retrofit: the board does not directly heat plastic resin, oil or water, and its rated power alone does not determine the temperature the process will reach.
Our electromagnetic heating systems have been applied to injection molding, extrusion, film blowing, wire drawing and pipeline heating projects. For an existing production machine, we begin with the part that needs heat: its diameter, heated length, operating temperature and current heating method. On a barrel with several independently controlled zones, provide the requirements for each zone rather than selecting one board from the machine’s total installed heater power.
