Industrial Furnaces

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Linn High Therm - Products

type series

HT-Series

tmax up to 1340 °C

Noch eine nette Überschrift

Fibre-insulated, high-temperature chamber furnace, Tmax. 1820°C, 3-52,5l with extremely short heating up - and cooling down cycles

Performance and condition:
  • Resistance heated by MoSi2, molybdenum, tungsten or graphite heater
  • Chamber furnace
  • Gastight
  • Maximum operating temperature 1400° up to 2300°
  • Insulation by combination of high quality ceramic fiber, graphite felt or porous alumina brickwork
Most important characteristics:
  • Extreme short heating up and cooling down cycles
  • High energy efficiency
  • Wide range of options for customizing
  • Easy to handle
Standard Options
  • Different temperature controllers
  • Gas feeding device for save operation when using burnable and explosive gases according to ATEX rules
  • Burning-off device with flame supervision for save operation when using burnable and explosive gases according to ATEX rules
  • Safety package for save operation when using burnable and explosive gases according to ATEX rules
  • Gas warning system for save operation when using burnable and explosive gases according to ATEX rules
  • Insulation for hydrogen operation H2, energy saving if gases with high thermal conductivity are used
  • Inspection glass for visual process control or additionally pyrometer measurement
  • Door guidance for save and easy operation
  • Condensate trap to enable “dirty” processes like debinding
  • Process Guiding Software for complete control and documentation by PC
Other options:
  • 3-zone heating for best temperature uniformity
  • Gas recooling unit for fast cycling
  • Inner insulation made from alumina bricks which allows a high chemical and thermal stability glove box installation
Standard Sizes*
model liters T max in °C Inside dimensions mm (w x h x d) kW
HT 1400 4,0 1400 130 x 190 x 160 3,5
HT 1400 M 12,5 1400 250 x 200 x 250 6,0
HT 1400 G 26,0 1400 250 x 350 x 300 9,0
HT 1400 GT 52,5 1400 250 x 700 x 300 16,0
HT 1600 4,0 1600 130 x 190 x 160 3,5
HT 1600 M 12,5 1600 250 x 200 x 250 6,0
HT 1600 G 26,0 1600 250 x 350 x 300 9,0
HT 1600 GT 26,0 1600 250 x 350 x 300 9,0
HT 1800 4,0 1750 130 x 190 x 160 3,5
HT 1800 M 4,0 1750 130 x 190 x 160 3,5
HT 1800 G 4,0 1750 130 x 190 x 160 3,5
HT 1800 GT 4,0 1750 130 x 190 x 160 3,5
HT 1800 Plus 4,0 1820 130 x 190 x 160 3,5
HT 1800 M Plus 4,0 1820 130 x 190 x 160 3,5
HT 1800 G Plus 4,0 1820 130 x 190 x 160 3,5
HT 1800 GT Plus 4,0 1820 130 x 190 x 160 3,5

*Customized  HT can be done up to 500 dm³

Technical details
Furnace housing

The protective gas – and vacuum tight, all-round reinforced inside casing is cooled by a fan so as not to exceed an outside wall temperature of the housing of 180 °C, also during continuous operation

The correspondingly designed outside housing remains cold (max. 40 °C above room temperature), except the door front panel. The vacuum tight swivelling door with silicone rubber sealing is constructed as explosion clap (relief pressure approximately 10 - 20 mbar) and equipped with turn-locks with adjustable spring pressure resistance.

On the rear side of the furnace the connection flanges for protective gas in- and outlet, vacuum and thermocouple.

The door flange as well as the connections for thermocouples and heating  elements and gas outlet are water-cooled.

Insulation

The inner housing is covered with fibre boards. The use of this lightweight, low heat storage material, permits extremely short heating up – and cooling down times.

Heating

The furnace is heated by exchangeable Kanthal-Super-1800 (KS1900 or Mo,(W))  heating elements, which are operated via a three-phase tyristor unit with phase-angle firing and a transformer. The heating element connections are being lead outside at the rear.

At the side, approximately in the middle of the furnace (installed from the back), a PtRh-Pt double thermocouple type S (Type B) (accuracy: class 2 according to DIN IEC part 2) measures the temperature. A pair of thermocouples is lead to the temperature controller and the one to the safety controller.

Control Unit
1 piece lockable safety controller for additional protection of heating and insulation
1 piece 3-phase thyristorunit for phase angle firing
1 piece pre-transformer
1 piece operating hour counter
3 pieces ampere meter
We make it possible:

Linn High Therm is specialized in customizing its products to customer´s needs. Please let us know if you desire any modifications.

Product Specifications

model liters T max in °C Inside dimensions mm (w x h x d) kW
HT 1400 4,0 1400 130 x 190 x 160 3,5
HT 1400 M 12,5 1400 250 x 200 x 250 6,0
HT 1400 G 26,0 1400 250 x 350 x 300 9,0
HT 1400 GT 52,5 1400 250 x 700 x 300 16,0
HT 1600 4,0 1600 130 x 190 x 160 3,5

Product Properties

Product Line: type series
Operation Mode: Batch
Construction Type: Furnace
Design: Chamber furnace
Temperature Max (°C): 1820
Heating: electrical
Heating Method: resistance
Atmosphere: Air
Applications: annealing, brazing, calcination, calibration, crystal growing, firing, heat treatment, oxydation, reduction, sintering

Video