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

RHTV50_150_17
RHTH80-300_18
RHTH120_600_18H2.jpg
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 ventilated housing made of textured stainless steel sheets for low surface temperature and high stability
  • Exclusive use of insulation materials without categorization according to EC Regulation No 1272/2008 (CLP). This explicitly means that alumino silicate wool, also known as “refractory ceramic fiber” (RCF), which is classified and possibly carcinogenic, is not used.
  • 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 with touch operation 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 process gas
  • 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
Tmax1Outer dimensions3 in mmMax. outer tube ØHeated lengthLength constant 
temperature1 +/− 5 K
Tube lengthConnected loadElectricalWeight
       in mm    
 in °CW2DHin mmin mmsingle zonedthree zonedin mmin kWconnectionin kg
RHTH 50/150/..1600 or5304806405015050703805.83-phase470
RHTH 80/300/..1700 or680550640803001001505309.43-phase490
RHTH 120/600/..180098055064012060020030083014.83-phase4110

  

ModelTmax1Outer dimensions3 in mmMax. outer tube ØHeated lengthLength constant 
temperature1 +/− 5 K
Tube lengthConnected loadElectricalWeight
Vertical designin °CWDH2in mmin mmin mmin mmin kWconnectionin kg
RHTV 50/150/..1600 or610700113050150303805.83-phase470
RHTV 80/300/..1700 or6807001280803008053010.73-phase490
RHTV 120/600/..1800680700158012060017083019.43-phase4110
1Values outside the tube. Difference to temperature inside the tube up to + 50 K
2Without tube
3External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.
4Heating only between two phases

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