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High-Temperature Tube Furnaces for Horizontal and Vertical Operation up to 1800 °C Gas Atmosphere or Vacuum

The high-temperature tube furnaces are available in either horizontal (type RHTH) or vertical (type RHTV) designs. High-quality insulation materials made of vacuum-formed fiber plates enable energy-saving operation and a fast heating time due to low heat storage and heat conductivity. By using different gas supply systems, operations can be performed under non-flammable or flammable protective or reactive gases or under vacuum.

 

 

Category: .
  • Tmax 1600 °C, 1700 °C, or 1800 °C
  • MoSi2 heating elements, mounted vertically for easy replacement
  • Insulation with vacuum-formed ceramic fiber plates
  • Rectangular outer housing with slots for convection cooling
  • Tube furnaces RHTV with frame for vertical operation
  • Housing made of sheets of textured stainless steel
  • Ceramic working tube made of material C 799 incl. fiber plugs operation under air
  • Type B thermocouple
  • Power unit with low-voltage transformer and thyristor
  • Over-temperature limiter with adjustable cutout temperature for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load and with selectable maximum temperature gradient as tube protection
  • Switchgear and control unit separate from furnace in separate floor standing cabinet
  • Defined application within the constraints of the operating instructions
  • NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive
  • Charge control with temperature measurement in the working tube and in the furnace chamber outside the tube
  • Display of inner tube temperature with additional thermocouple
  • Gas tight flanges for protective gas and vacuum operation
  • Manual or automatic gas supply system
  • Three-zone control for optimization of temperature uniformity (only tube furnaces RHTH)
  • Check valve at gas outlet avoids intrusion of false air
Model Tmax Outer dimensions in mm Max. outer tube Ø Heated length Length constant temperature +/- 5 K Tube length Connected load Electrical Weight
Horizontal design °C3 W2 D H in mm in mm in mm3 in mm W connection* in kg
RHTH 50/150/.. 1600 or 470 480 640 50 150 50 380 5.4 3-phase1 70
RHTH 80/300/.. 1700 or 620 550 640 80 300 100 530 9.0 3-phase1 90
RHTH 120/600/.. 1800 920 550 640 120 600 200 830 14.4 3-phase1 110

Model Tmax Outer dimensions in mm Max. outer tube Ø Heated length Length constant temperature +/- 5 K Tube length Connected load Electrical Weight
Vertical design °C3 W D H2 in mm in mm in mm3 in mm kW connection* in kg
RHTV 50/150/.. 1600 or 500 650 510 50 150 30 380 5.4 3-phase1 70
RHTV 80/300/.. 1700 or 580 650 660 80 300 80 530 10.3 3-phase1 90
RHTV 120/600/.. 1800 580 650 960 120 600 170 830 19.0 3-phase1 110
Article No. Description
Exhaust systems/Accessories
631000140 Chimney for connection to an exhaust pipe
631000812 Chimney with fan, to remove exhaust gas from the furnace better.
631000166 Catalytic converter with fan for removal of organic components from the exhaust air.
699000408 Round saggar (Ø 115 mm x 35 mm) for furnaces LHT/LB, Tmax 1650 °C
699000984 Round lid for furnaces LHT/LB, Tmax 1650 °C
699000279 Square saggar for furnaces HTC and LHT, Tmax 1600 °C
699000985 Square lid for furnaces HTC and LHT, Tmax 1600 °C
493000002 Various tongs for easy loading and unloading of the furnace. (300mm)
493000003 Various tongs for easy loading and unloading of the furnace. (500mm)