Thermal Process Technology (Isıl Proses Teknolojisi) /
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Salt-Bath Furnaces for Heat Treatment of Steel or Light Metals Electrically Heated or Gas-Fired

Salt-bath furnace TS 40/30, electrically heated Salt-bath furnace TSB 30/30, gas-fired

Salt-bath furnace TS 30/18 with preheating chamber above the salt bath and charging aid for immersion of the charge

Salt-bath furnaces offer remarkably high temperature uniformity and excellent heat transfer to the work piece. Our salt-bath furnaces TS 20/15 - TSB 90/80 are especially useful for heat-treating of metals in neutral or active salt baths. Processes such as carbonitriding (e.g. Tenifer) up to 600 °C, carburizing up to 950 °C, or bright annealing up to 1000 °C can be realized. In their standard version these salt-bath furnaces are equipped with safety technology for heat treatment of steel. As addional feature they can be equipped with extended safety technology for heat treatment of light metals.

  • Tmax 750  °C or 1000  °C in the salt bath
  • Safety technology according to EN 60519-2
  • Useful for heat treatment of steel
  • Salt bath temperature control
  • Electric (TS) all-round heating or gas heating (TSB)
  • Removable collar plate made of solid steel
  • Insulated swing-a-way lid
  • Temperature uniformity up to +/- 2 °C according to DIN 17052-1 in the salt bath
  • Over-temperature limiter with manual reset in the furnace chamber to prevent dangerous conditions for the furnace or personnel
  • Salt bath control of salt bath and furnace chamber
  • Defined application within the constraints of the operating instructions


  • Type P: low carbon steel and CrNi plated for carburizing, neutral salt and annealing baths up to 850  °C
  • Type C: high alloy CrNi steel for neutral salt and annealing baths up to 1000  °C and for dip brazing of Aluminium

Additional equipment

  • Exhaust gas collection at rim for connection to an exhaust system
  • Enhanced safety systems for heat treatment of aluminium and magnesium in the salt bath with second over-temperature limiter with manual reset and PLC-bath control with thermocouples in the salt bath and in the furnace chamber
  • Process control and documentation via VCD software package or Nabertherm Control Center (NCC) for monitoring, documentation and control
ModelTmaxInner dimensions salt-bath crucibleVolumeOuter dimensions in mmHeatingElectricalWeight
 °C2Ø in mmh in mmin lWDHpower in kW1connection*in kg
TS 20/1575023050020850850800163-phase650
TS 30/1875030050030950950800203-phase700
TS 40/307504005006010501050800333-phase750
TS 50/4875050060011011501150970583-phase1000
TS 60/6375061080022012501250970703-phase1200
TS 70/727507001000370135013501370803-phase1500
TS 90/8075090010005001600160014001003-phase1700
TS, TSB 20/20100023050020850850800213-phase650
TS, TSB 30/30100030050030950950800333-phase700
TS, TSB 40/4010004005006010501050800443-phase750
TS, TSB 50/60100050060011011501150970663-phase1000
TS, TSB 60/72100061080022012501250970803-phase1200
TS, TSB 70/90100070010003701350135013701003-phase1500
TS, TSB 90/80100090010005001600160014001203-phase1700
1Depending on furnace design connected load might be higher *Please see page 81 for more information about supply voltage
2Salt bath temperature