Open-coil resistance wire threaded through a string of ceramic beads; delivers long life at high temperatures and high power density.
Also known as: Ceramic band heater · Ceramic insulated band heater
You can upload your technical drawing via the quote form.
General Information
In a ceramic insulated band heater, the resistance wire is threaded and wound through interlocking ceramic beads. This construction allows the wire to expand freely, eliminating the mechanical stress that limits life in mica insulated heaters. The ceramic body operates safely up to 650 °C.
The second advantage of the beaded construction is insulation. Because there is ceramic mass and an air gap between the wire and the outer sheath, most of the heat is directed inwards, towards the barrel, and losses to the outside are reduced. As a result, a ceramic band heater of the same power heats the barrel faster than its mica equivalent and energy consumption drops.
The outer surface of the body can be covered with stainless steel sheet or a ceramic fibre blanket. In high-temperature applications, air cooling channels can be built into the band; used together with a cooling fan, this enables rapid temperature reduction and shortens cycle times in production runs that require colour changes.
Applications
- Extrusion barrels
- Large-diameter moulds
- Furnace bodies
- Heat treatment lines
Related Industries
Frequently Asked Questions
Because of the ceramic bead construction and the inner insulation layer, its cross-section is thicker than that of a mica band heater. Although this may look like a disadvantage, the thickness reduces heat loss to the surroundings and lowers energy consumption.
Colour or material changes require rapid cooling of the barrel. By connecting a fan to the channels in the band, cooling time is significantly shortened and cycle time drops.
Related Guides
Related Products
Let us define the right solution for your project together
Contact us to determine the most suitable heater and industrial heating solution for your project. Our technical team is ready to offer the solution that best fits your requirements.