High-Temperature Tube Furnaces for Horizontal or Vertical Operation up to 1800 °C

By using different gas supply systems, operations can be performed under non-flammable or flammable protective or reactive gases or under vacuum.

Process Control

Function and equipment

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RHTH80-300_18
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RHTH120_600_17
Sinterfahrt
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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 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.

Standard Equipment

  • Tmax 1600 °C, 1700 °C, or 1800 °C
  • Single-zoned design
  • Dual shell housing made of textured stainless steel sheets with additional fan cooling for low surface temperature
  • Exclusive use of insulation materials without categorization according to EC Regulation No. 1272/2008 (CLP)
  • Insulation with vacuum-formed ceramic fiber plates
  • Tube furnaces RHTV with frame for vertical operation
  • Type B thermocouple
  • Solid state relays provide for lownoise operation
  • Ceramic working tube C 799 including two fiber plugs for operation under air
  • Hanging and easy to change MoSi2 heating elements
  • Power unit with low-voltage transformer and thyristor
  • Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load 
  • 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
  • Controller P570 (50 programs with each 40 segments)

 

Additional equipment

Additional Equipment

  • Charge control with temperature measurement in the working tube
  • Three-zone control for optimization of temperature uniformity (only horizontal tube furnaces RHTH)
  • Gas supply system 2 for non-flammable protective or reactive gas operation
  • Gas supply system 4 for hydrogen operation
  • Vacuum package to evacuate the working tube
  • Process control and documentation via VCD software package for monitoring, documentation and control

Technical specifications

Model Horizontal design Tmax1 Outer dimensions3 in mm Max. outer tube Ø Heated length Length constant temperature1 +/− 5 K Tube length Connected load Electrical Weight
              in mm        
  in °C W2 D H in mm in mm single zoned three zoned in mm in kW connection* in kg
RHTH 50/150/.. 1600 or 470 480 640 50 150 50 70 380 5.4 3-phase4 70
RHTH 80/300/.. 1700 or 620 550 640 80 300 100 150 530 9.0 3-phase4 90
RHTH 120/600/.. 1800 920 550 640 120 600 200 300 830 14.4 3-phase4 110

 

Model Tmax1 Outer dimensions3 in mm Max. outer tube Ø Heated length Length constant temperature1 +/− 5 K Tube length Connected load Electrical Weight
Vertical design in °C W D H2 in mm in mm in mm in mm in kW connection* in kg
RHTV 50/150/.. 1600 or 500 650 510 50 150 30 380 5.4 3-phase4 70
RHTV 80/300/.. 1700 or 580 650 660 80 300 80 530 10.3 3-phase4 90
RHTV 120/600/.. 1800 580 650 960 120 600 170 830 19.0 3-phase4 110
1Values outside the tube. Difference to temperature inside the tube up to + 50 K *Please see page 75 for more information about supply voltage
2Without tube
3External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.
4Heating only between two phases

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