Top hat furnace - HB

The HB furnace range has an automatically operated vertically moving hood for heat treatment in air as standard option. This design allows samples to be accessed from three sides. The HB can be equipped with CrFeAl heating wires up 1300 °C or with MoSi2 heating elements for temperatures up to 1800 °C.

The HB top hat furnaces are available with usable volumes of 80 to 560 litres. The hood moves up and down automated giving access to the hearth for loading and unloading. Alternatively the HB-BL 240 and HB-BL 430 litres model the hood is steady and the hearth moves up and down in a bottom loading way.

For debinding of technical ceramics, preheated air fans can be installed blowing hot air through the hearth into the furnace chamber. For safe combustion of binder gases several options are available, e.g. active propane gas after burner or catalytic oxidiser.

Standard features

1300 °C, 1600 °C, 1700 °C & 1800 °C maximum operating temperatures
Programmable EPC3016P1 controller
From 80 to 514 litre capacities
HB = top hat. HB-BL = bottom loading
FeCrAl wire heating elements for 1300 °C models
High quality molybdenum disilicide heating elements for higher temperatures
Energy efficient low thermal mass insulation
Over-temperature protection
Ethernet communications

Top hat furnace - HB Configurations

The HB furnaces are available in two versions. The Top hat has a steady hearth and a movable hood.
The Bottom loading furnaces (BL) have steady hood and a movable hearth .

HB 13/240 with optional preheated hot air blowers

HB-BL 17/430 bottom loader with optional PLC and 19 inch touchscreen control and gas outlet connection to optional catalytical after burner

Options (specify these at time of order)

A range of sophisticated digital controllers, multisegment programmers and data loggers with digital communication options is available - more information about controllers
Gas inlet for operation under modified atmosphere (not gas tight)
Preheated air blower up to 650°C
Active propane gas after burner or catalytic oxidiser for safe combustion of debinding applications
Reinforced base plate for a surface load of 500 kg/m2 instead of 250 kg/m2
Bottom heater for improved temperature uniformity (this option cannot be combined with the reinforced base)
Fast cooling options

Comparison of natural and forced cooling option

Top hat furnace - HB Application Examples

annealing, ceramic injection moulding (CIM), debinding, debinding in air, degassing, drying, sintering, sintering in air, sublimation, synthesis, tempering

Top hat furnace - HB Technical details

View inside

FeCrAl heating elements up to 1300 °C
Low thermal mass insulation
Top hat: steady hearth; Bottom loading: movable hearth
Top hat: movable hood; Bottom loading: steady hood
Frame

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