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The HRF range of horizontal air recirculating chamber furnaces is available with a maximum operating temperature of 750°C and is particularly suitable for stress relieving, tempering, normalising, annealing and other low temperature heat treatment processes.
They feature an easy clean, stainless steel inner chamber and a zinc coated outer case, finished with a hardwearing stoved epoxy polyester coating. The double skin construction ensures a cool, safe outer case temperature. Heating is provided by resistance wire elements on both sides of the chamber. A powerful centrifugal fan and airguide system forces air over the elements and back through the work chamber, providing uniform temperature distribution and rapid heat transfer to the workpiece. A combination of insulation is used: low thermal mass ceramic fibre insulation, which ensures low energy losses and refractory bricks below the hearth provide load bearing capacity,
A side-hinged double-sealed door, which minimises heat losses, is fitted as standard
 Heating is provided by resistance wire elements on both sides of the chamber
Powerful centrifugal fan and air guide system forces air over the elements & back through the chamber to ensure good thermal uniformity
Maximum operating temperature 750°C |
Air Recirculating Chamber Furnaces HRF
Chamber capacities of 22, 112 & 324 litres
Choice of PID controller or programmers
Easy clean stainless steel inner chamber
Applications in general industry include, low temperature ferrous metal heat treatment processes; annealing, tempering, normalising and stress relieving 
Carbolite HRF Specification
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