Sintering Furnaces LHT ../17 D up to 1650 °C

These high-temperature furnaces are particularly convincing due to their very good price-performance ratio. 

Process Control

Function and equipment

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These high-temperature furnaces are ideally suited for sintering bridges and crowns made of translucent zirconia. The special heating elements made of molybdenum disilicide promise very good protection against chemical interaction between the charge and the furnace components. The bridges and crowns are loaded in ceramic saggars. These high-temperature furnaces are particularly convincing due to their very good price-performance ratio. The furnaces can be individually programmed for all recommended sintering curves by almost all zirconium manufacturers. 

Key Facts

  • Suitable for sintering zirconia from all leading manufacturers
  • Ideal for conventional/classic sintering, even overnight
  • Maximum heating rate up to 1000 °C at 30 °C/min (LHT 01/17 D) or 20 °C/min (LHT 03/17 D)
  • Fastest cooling time to 300 °C in 189 minutes (LHT 01/17 D) or 165 minutes (LHT 03/17 D)
  • Sintering capacity of 30 to 75 single crowns/bridges and full arches
  • High-quality heating elements made of molybdenum disilicide offer very good protection against chemical interaction between charge and heating elements
  • 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). This explicitly means that alumino silicate wool, also known as “refractory ceramic fiber” (RCF), which is classified and possibly carcinogenic, is not used.
  • Type S thermocouple
  • Controller with touch operation P580 (50 programs with each 40 segments)
  • MyNabertherm App for online monitoring of the firing on mobile devices for free download
  • Freeware NTEdit for convenient program input via ExcelTM for WindowsTM on the PC
  • Freeware NTGraph for evaluation and documentation of firings using ExcelTM for WindowsTM  on the PC
  • NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive
  • Defined application within the constraints of the operating instructions

Additional equipment

Additional equipment

  • Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
  • Stackable saggars for loading in up to two or three levels, depending on model
  • Process control and documentation via VCD software package for monitoring, documentation and control

Technical specifications

ModelTmaxInner dimensions in mmVolumeMaximum load Outer dimensions in mm1ConnectedElectricalWeightMax. heating rate up to 1000 °C
 in °Cwdhin lcrownsWDH2load3 in kWconnection*in kgin °C/min
LHT 01/17 D1650110120120130385425525+1951.951-phase2827
LHT 03/17 D1650135135200375412450595+3002.701-phase3857
*These furnaces are available for main voltage of 208 V, 220 V - 240 V, 1/N/PE or 2/PE
1External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.
2Including opened lift door
3The connected load refers to the standard furnace and may increase for a furnace with additional equipment. 
For furnaces with connection options for multi-range voltages, the connected load applies to the highest permissible connected voltage.

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