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

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.

Process Control

Function and equipment

LH216_12
LH60_13DB50
LH30_12
LF60_14
LH30_14
LH60_12SW
LH120_12_fmt.jpg
Begasungssystem
LH_gemauerter_Boden.png
Ausfuehrung_LF_Modell

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
  • Dual shell housing made of textured stainless steel sheets with additional fan cooling for low surface temperature
  • 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
  • Exclusive use of insulation materials without categorization according to EC Regulation No. 1272/2008 (CLP)
  • 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
  • Motorized exhaust air flaps
  • Freely adjustable air inlet integrated in furnace floor
  • Base included
  • Controller B500 (5 programs with each 4 segments)
  • Defined application within the constraints of the operating instructions
  • NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive

 

Additional equipment

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
  • Process control and documentation via VCD software package for monitoring, documentation and control

Technical specifications

Model Tmax Inner dimensions in mm Volume Outer dimensions1 in mm Connected Electrical Weight
  in °C w d h in l W D H load in kW connection* in kg
LH 15/12 1200 250 250 250 15 680 860 1230 5.0 3-phase2 170
LH 30/12 1200 320 320 320 30 710 930 1290 7.0 3-phase2 200
LH 60/12 1200 400 400 400 60 790 1080 1370 8.0 3-phase 300
LH 120/12 1200 500 500 500 120 890 1180 1470 12.0 3-phase 410
LH 216/12 1200 600 600 600 216 990 1280 1590 20.0 3-phase 450
                       
LH 15/13 1300 250 250 250 15 680 860 1230 7.0 3-phase2 170
LH 30/13 1300 320 320 320 30 710 930 1290 8.0 3-phase2 200
LH 60/13 1300 400 400 400 60 790 1080 1370 11.0 3-phase 300
LH 120/13 1300 500 500 500 120 890 1180 1470 15.0 3-phase 410
LH 216/13 1300 600 600 600 216 990 1280 1590 22.0 3-phase 460
                       
LH 15/14 1400 250 250 250 15 680 860 1230 8.0 3-phase2 170
LH 30/14 1400 320 320 320 30 710 930 1290 10.0 3-phase2 200
LH 60/14 1400 400 400 400 60 790 1080 1370 12.0 3-phase 300
LH 120/14 1400 500 500 500 120 890 1180 1470 18.0 3-phase 410
LH 216/14 1400 600 600 600 216 990 1280 1590 26.0 3-phase 470
                       
LF 15/13 1300 250 250 250 15 680 860 1230 7.0 3-phase2 150
LF 30/13 1300 320 320 320 30 710 930 1290 8.0 3-phase2 180
LF 60/13 1300 400 400 400 60 790 1080 1370 11.0 3-phase 270
LF 120/13 1300 500 500 500 120 890 1180 1470 15.0 3-phase 370
                       
LF 15/14 1400 250 250 250 15 680 860 1230 8.0 3-phase2 150
LF 30/14 1400 320 320 320 30 710 930 1290 10.0 3-phase2 180
LF 60/14 1400 400 400 400 60 790 1080 1370 12.0 3-phase 270
LF 120/14 1400 500 500 500 120 890 1180 1470 18.0 3-phase 370
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

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Customer Test Center

What furnace is the right choice for this specific process? This question cannot always be answered easily. Therefore, we have set up our modern test center which is unique in respect to size and variety. A representative number of furnaces is available for tests for our customers.