Open wire heating elements (ceramic, mica)
According to their design, heating elements with open wire are divided into:
- ceramic heating elements
- elements with mica insulation
The position of the resistance wire is defined by ceramic or mica beams of various shapes. Electric insulation from the surrounding construction is ensured by these beams and the air gaps created. Heated air is the target heated medium or only a mediator (indirect heating).
Use: Furnaces for high temperatures, calcining, annealing furnaces, industrial steamers, infra heating, indirect heating of liquids, e.g. in galvanic baths, ventilation, heat curtains etc. For applications with high working temperatures (more than 800 ° C), it is often the only solution possible.
Maximum permanent working temperature on the surface of the wire.
- 1,425 °C – standard resistance heating wires.
- 1,850°C – special elements from MoSi2 are used instead of heating wire. Applications with restricted shapes and dimensions.
For more information or help to resolve specific heating issues, please contact us.
Disadvantages: Lower mechanical resistance and susceptibility to contamination.
Advantages: enables high working temperature, rapidly reaches the target temperature.