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Chamber Furnaces up to 1400 °C

Chamber Furnaces with Brick Insulation or Fiber Insulation up to 1400 °C

Chamber furnace LH 30/14 Chamber furnace LH 60/12 SW with scale to measure weight reduction during annealing

Chamber furnace LH 30/12 with manual lift door

Chamber furnace LH 216/12 with fresh air fan to accelerate the cooling times

Parallel swinging door for opening when hot

Gas panel for one non-flammable protective or reactive gas (N2, Ar, He, CO2, air, forming gas)

LF furnace design provides for shorter heating and cooling times

These big chamber furnaces LH 15/12 - LF 120/14 have been trusted for many years as professional chamber furnaces for the laboratory. These furnaces are available with either a robust insulation of light refractory bricks (LH models) or with a combination insulation of refractory bricks in the corners and low heat storage, quickly cooling fiber material (LF models). With a wide variety of optional equipment, these chamber furnaces can be optimally adapted to your processes.

Standard Equipment

  • Tmax 1200 °C, 1300 °C, or 1400 °C
  • High furnace chamber with five-sided heating for very good temperature uniformity
  • Heating elements on support tubes ensure free heat radiation and a long service life
  • Controller mounted on furnace door and removable for comfortable operation
  • Protection of bottom heating and flat stacking surface provided by embedded SiC plate in the floor
  • LH models: multi-layered insulation of light refractory bricks and special backup insulation
  • LF models: high-quality fiber insulation with corner bricks for shorter heating and cooling times
  • Door with brick-on-brick seal, hand fitted
  • Gegenerously dimensioned heating provides for short heating times
  • Self-supporting arch for high stability and greatest possible protection against dust
  • Motor driven exhaust air flap
  • Freely adjustable air inlet integrated in furnace floor
  • Base included
  • Controller B400 (5 prgrams with each 4 segments)

Additional Equipment

  • Parallel swinging door for opening when hot with hot surface facing away from the operator
  • Lift door with electro-mechanic linear drive
  • Separate wall-mounting or floor standing cabinet for switchgear
  • Cooling system to cool the furnace with a defined temperature gradient or with a preset fresh air volume. Both operating modes can be switched on and off for different segments by means of the extra function of the controller.
  • Protective gas connection to purge with non-flammable protective or reaction gases
  • Manual or automatic gas supply system
  • Scale to measure weight reduction during annealing
ModelTmaxInner dimensions in mmVolumeOuter dimensions1 in mmConnectedElectricalWeight
 in °Cwdhin lWDHload in kWconnection*in kg
LH 15/1212002502502501568086012305.03-phase2170
LH 30/1212003203203203071093012907.03-phase2200
LH 60/12120040040040060790108013708.03-phase300
LH 120/1212005005005001208901180147012.03-phase410
LH 216/1212006006006002169901280159020.03-phase450
            
LH 15/1313002502502501568086012307.03-phase2170
LH 30/1313003203203203071093012908.03-phase2200
LH 60/131300400400400607901080137011.03-phase300
LH 120/1313005005005001208901180147015.03-phase410
LH 216/1313006006006002169901280159022.03-phase460
            
LH 15/1414002502502501568086012308.03-phase2170
LH 30/14140032032032030710930129010.03-phase2200
LH 60/141400400400400607901080137012.03-phase300
LH 120/1414005005005001208901180147018.03-phase410
LH 216/1414006006006002169901280159026.03-phase470
            
LF 15/1313002502502501568086012307.03-phase2150
LF 30/1313003203203203071093012908.03-phase2180
LF 60/131300400400400607901080137011.03-phase270
LF 120/1313005005005001208901180147015.03-phase370
            
LF 15/1414002502502501568086012308.03-phase2150
LF 30/14140032032032030710930129010.03-phase2180
LF 60/141400400400400607901080137012.03-phase270
LF 120/1414005005005001208901180147018.03-phase370
1External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.*Please see page 75 for more information about supply voltage
2Heating only between two phases
 

Chamber Furnaces for Annealing, Hardening and Brazing up to 1280 °C

Chamber furnace N 61/H Chamber furnace N 7/H as table-top model

Working with protective gas boxes for a protective gas atmosphere using a charging cart

Deep furnace chamber with three-sides heating

To withstand harsh use in the laboratory, e.g. when heat-treating metals, robust insulation with light refractory bricks is necessary. The chamber furnaces N 7/H - N 87/H are a perfect fit to solve this problem. The furnaces can be extended with a variety of accessories, like annealing boxes for operation under protective gas, roller guides, or a cooling station with a quench tank. Even high-performance applications like the annealing of titanium in medical applications can be implemented without the use of expensive and complicated annealing systems.

Standard Equipment

  • Tmax 1280 °C
  • Deep furnace chamber with three-sides heating: from both side walls and bottom
  • Heating elements on support tubes ensure free heat radiation and a long service life
  • Bottom heating protected by heat-resistant SiC plate
  • Temperature uniformity up to +/− 10 °C according to DIN 17052-1
  • Low energy consumption due to multi-layer insulation
  • Base frame included in the delivery, N 7/H - N 17/HR designed as table-top model
  • Parallel guided downward swinging door (user protected from heat radiation)
  • Door movement cushioned with gas dampers/struts
  • Controller B400 (5 prgrams with each 4 segments)
ModelTmaxInner dimensions in mmVolumeOuter dimensions1 in mmConnectedElectricalWeightHeating time
 in °Cwdhin lWDHload in kWconnection*in kgin min2
N 7/H128025025014098006506003.01-phase60320
N 11/H1280250350140118007506003.51-phase70320
N 11/HR1280250350140118007506005.53-phase37070
N 17/HR1280250500140178009006006.43-phase390110
N 31/H12803503502503110401100134015.03-phase21090
N 41/H12803505002504110401250134015.03-phase260105
N 61/H12803507502506110401500134020.03-phase400105
N 87/H128035010002508710401750134025.03-phase480105
1External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.*Please see page 75 for more information about supply voltage
2Heating time of the empty and closed furnace up to Tmax −100 K (connected to 230 V 1/N/PE rsp. 400 V 3/N/PE)
3Heating only between two phases