Glas /
Heat Soak Test-ovne

Forced Convection Chamber Furnaces, Heat Soak Test Furnaces for Toughened Safety Glass (TSG) Electrically Heated or Gas-Fired

Forced convection chamber furnace N 4010/45 HA Forced convection chamber furnace N 12000/26 HA Forced convection chamber furnaces N 10000/45HA

Forced convection chamber furnace N 2880/60HAS for glass cooling with frame for opening of individual chamber segments

Adjustable air outlets for optimization of the temperature uniformity

These forced convection chamber furnaces are available for maximum working temperatures of 260 °C or 450 °C. They are suitable for numerous processes such as pre-heating of moulds, ageing or drying. These forced convection chamber furnaces up to 450 °C are recommended for Heat Soak testing of Toughened Safety Glass (TSG). During a Heat Soak Test in accordance with EN 14179-1 the panes are exposed to a temperature of 290 °C for at least four hours in order to transform nickel sulfide inclusions and hence to prevent the pane from breaking spontaneously later. The documentation of the heat treatment process is strongly recommended. Program entry, visualization and the documentation of the process are achieved by means of the PLC-control in combination with the powerful Nabertherm Control Center (NCC), which registers and archives the temperatures at different measuring points on the pane.

Standard version

  • Tmax 260  °C or 450  °C
  • Electrically heated or gas-fired
  • Heating of the electrically heated furnace by means of heater coils
  • Direct gas-fired or up on request with indirect gas heating with radiation tube, e.g. for heat treatment of aluminum
  • Optimal air circulation for your charge by means of adjustable air outlets
  • Horizontal air circulation (type ../HA)
  • High air exchange for perfect heat transfer
  • Ground level charging without bottom insulation for 260  °C models
  • Temperature uniformity up to +/- 5 °C according to DIN 17052-1
  • Furnace chamber lined with alloy 1.4301 (DIN)
  • High quality mineral wool insulation provides for low outer temperatures
  • Inside unlocking device for furnaces with walk-in work space
  • Furnace sizes suitable for common charging systems, such as pallets, baskets, etc.
  • Double-wing door for furnaces with an internal width of more than 1500 mm (260 °C and 450 °C models). Furnaces for higher temperatures and with smaller sizes are equipped with a single-wing door.
  • 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
  • Defined application within the constraints of the operating instructions
  • NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive

Additional equippment

  • Optional floor insulation provides for improved temperature uniformity for 260  °C models
  • Data recording via Nabertherm Control Center (NCC) in accordance with the requirements of EN 14179-1 for Heat Soak Tests of Tempered Safety Glass (TSG)
  • Racks for loading of standing glass panes
  • Entry ramps or track cutouts for floor-level charging cart of models with bottom insulation
  • Furnace positioned on base frame provides for ergonomic charging height
  • Electro-hydraulic lift door
  • Fan system for faster cooling with manual or motor-driven control
  • Motor-driven control of air inlet and exhaust air flaps for better ventilation of the furnace chamber
  • Observation window and/or furnace chamber lighting
  • Optimization of the temperature uniformity up to +/- 3 °C according to DIN 17052-1
  • Safety technology according to EN 1539 for charges containing solvents
  • Charging systems or roller conveyors, also electrically driven provide for easy charging
  • Catalytic or thermal exhaust gas cleaning systems
  • Process control and documentation via VCD software package or Nabertherm Control Center (NCC) for monitoring, documentation and control
ModelTmaxInner dimensions in mmVolumeCirculationHeating power in kW2Electrical
 °Cwdhin lrate m3/h260 °C450 °Cconnections*
N 9900/.. A260 or 45015003000220099002150085851/1003-phase
N 17600/.. A260 or 45020004000220017600330001301301/1453-phase
N 41600/.. A260 or 45020006500320041600640002002001/2303-phase
N 1000/..260 or 4501000100010001000360015151 / 363-phase
N 1500/..260 or 4501500100010001500360018181 / 363-phase
N 1500/..1260 or 4501000150010001500360018181 / 363-phase
N 2000/..260 or 4501500110012002000640018181 / 423-phase
N 2000/..1260 or 4501100150012002000640018181 / 423-phase
N 2010/..260 or 4501000100020002000720024241 / 483-phase
N 2880/..260 or 4501200120020002880720048481 / 603-phase
N 4000/..260 or 4501500220012004000900042421 / 603-phase
N 4000/..1260 or 4502200150012004000900042421 / 603-phase
N 4010/..260 or 45010002000200040001280048481 / 603-phase
N 4010/..1260 or 45020001000200040001280048481 / 603-phase
N 4500/..260 or 45015001500200045001280048481 / 603-phase
N 5600/..260 or 45015002500150056001280060601 / 843-phase
N 6750/..260 or 45015003000150067501920090901 /1083-phase
N 7200/..260 or 45020001500240072001800084841 /1083-phase
N 10000/..260 or 450200025002000100002560096961 /1203-phase
1Reduced connected load for plastics applications *Please see page 73 for more information about supply voltage
2Depending on furnace design connected load might be higher