The Carbolite HB Top Hat Furnace range has a vertically moving hood that operates automatically for heat treatment in air, which is a standard option. This design allows access to samples from three sides, making it convenient and efficient. The HB Top Hat Furnace can be equipped with either CrFeAl heating wires that can go up to 1300 °C or MoSi2 heating elements that can be used for temperatures up to 1800 °C.
The HB top hat furnaces are available in varying sizes, with usable volumes ranging from 80 to 560 litres. The hood moves up and down in an automated manner, providing easy access to the hearth for loading and unloading. Alternatively, the HB-BL 240 and HB-BL 430-litre models have a steady hood and a bottom-loading hearth that moves up and down.
For the debinding of technical ceramics, preheated air fans can be installed to blow hot air through the hearth and into the furnace chamber. To ensure safe combustion of binder gases, several options are available, such as active propane gas afterburner or catalytic oxidizer.
Application Examples
annealing, ceramic injection moulding (CIM), debinding, debinding in air, degassing, drying, sintering, sintering in air, sublimation, synthesis, tempering
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
Options (SPECIFY THESE AT THE 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 a modified atmosphere (not gas-tight)
- Preheated air blower up to 650°C
- Active propane gas afterburner or catalytic oxidizer 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
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
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 a steady hood and a movable hearth.