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High-Temperature Furnaces up to 1650 °C Suitable for Sintering Translucent Zirconia

LHT 01/17 D LHT 03/17 D

Saggars with top lid for high-temperature furnace LHT 01/17 D

Charge saggar, starter-set for high-temperature furnace LHT 03/17 D

Over-temperature limiter

LHT 01/17 D - LHT 03/17 D

These high-temperature furnaces are perfectly suited for sintering of translucent zirconia units. The special molybdenum discilicide heating elements offer best possible protection against chemical interaction between charge and heating elements. The zirconia units are positioned in ceramic saggars. Up to three saggars can be stacked into the high-temperature furnace.

  • Tmax 1650  °C
  • Furnace chamber with a volume of 1 or 2 liters
  • Special heating elements made of molybdenum disilicide offer best possible protection against chemical interaction between charge and heating elements
  • Furnace chamber lined with first-class, long-life fiber material, unclassified
  • Housing made of sheets of textured stainless steel
  • Dual shell housing with additional fan cooling for low surface temperature
  • Compact design with lift door, opening upwards
  • Adjustable air inlet
  • Exhaust air opening in the roof
  • Precise temperature control, also in the lower temperature range for drying
  • Controller P480 (LHT 01/17 D) or P470 (LHT 03/17 D)
  • NTLog for Nabertherm controller: recording of process data with USB-flash drive
  • Switchgear with steady control of the heating elements
  • Delivery incl. starter set to charge the zirconia works
  • Defined application within the constraints of the operating instructions

Additional equipment

  • 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
  • Saggar for charging of up to three layers
  • Process control and documentation via VCD software package for monitoring, documentation and control
  • Protective gas connection for non-flammable protective or reaction gases for LHT 03/17 D
  • Manual or automatic gas supply system
ModelTmaxInner dimensions in mmVolumeMaximum Outer dimensions in mmConnectedElectricalWeightMinutes
 °Cwdhin lunitsWDH2load kWconnection*in kgto Tmax1
LHT 01/17 D1650110120120145382425525+1953.61-phase2810
LHT 03/17 D1650135155200275470620770+2603.01-phase7560
*These furnaces are available for main voltage of 110 V - 120 V resp. 200 V - 240 V, 1/N/PE or 2/PE
1If connected at 230 V 1/N/PE
2Including opened lift door
 

High-Temperature Bottom Loading Furnace up to 1650 °C with Integrated Speed Cooling System for Sintering of Translucent Zirconia

High-temperature bottom loading furnace LHT 02/17 LB Speed with rapid cooling function

Automated table lowering for cooling

Charge saggar, starter-set

LHT 02/17 LB Speed

Due to its maximum temperature of 1650 °C and the large chamber the high-temperature bottom loading furnace is perfectly suited for sintering of translucent zirconia. The electrically driven lift-bottom provides for easy charging. The heating all around the cylindrical furnace chamber provides for a good temperature uniformity.

By using special heating elements made of molydenum disilicide crowns and bridges are protected against chemical contamination at the best. The charge will be placed in saggars made of technical ceramics. Up to three saggars on top of each other guarantee high productivity.

The high-temperature bottom loading furnace is additionally equipped with rapid cooling device. The furnace automatically opens stepwise for faster cooling. Depending on the charge and the type of saggars process times shorter than two hours can be realized.

  • Tmax 1650  °C
  • High-quality heating elements made of molybdenum disilicide offer best possible protection against chemical interaction between charge and heating elements
  • Furnace chamber lined with first-class, long-life fiber material, unclassified
  • Outstanding temperature uniformity due to all-round furnace chamber heating
  • Furnace chamber with a volume of 2 liters, table with large floor space
  • Electric screw drive with push button operation, automatic opening of Speed model for cooling possible
  • Housing made of sheets of textured stainless steel
  • Exhaust air vent in the roof
  • Controller P470
  • NTLog for Nabertherm controller: recording of process data with USB-flash drive
  • Speed model with drying function. When starting the program the table will be driven in drying position and closes automatically at 500  °C
  • Delivery incl. one starter set to charge the zirconia works
  • Defined application within the constraints of the operating instructions

Additional equipment

  • 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
  • Saggar for charging of up to three layers
  • Process control and documentation via VCD software package for monitoring, documentation and control
ModelTmaxInner dimensions in mmVolumeMaximumOuter dimensions in mmConnectedElectricalWeightMinutes
 °CØhin lunitsWDHload kWconnection*in kgto Tmax1
LHT 02/17 LB Speed1650Ø 1201302755406107403.31-phase8580
*These furnaces are available for main voltage of 110 V - 120 V resp. 200 V - 240 V, 1/N/PE or 2/PE
1If connected at 230 V 1/N/PE
 

High-Temperature Furnace with SiC Rod Heating for Sintering Zirconia up to 1550 °C

HTCT 01/16 HTCT 01/16

Furnace chamber with high-quality fiber materials and SiC heating rods on both sides of the furnace

Saggars with top lid

HTCT 01/16

Designed as table model with SiC heating rods, this model offers numerous advantages when sintering zirconia at an attractive price. The large heating chamber and fast heating-up times make this model a good selection for the CAD/CAM processing of zirconia. The furnace controller can be freely programmed for the individual sintering of the zirconia material. The high-temperature furnace is moreover designed for connection to the single-phase mains supply.

  • Tmax 1550  °C
  • Working temperature 1500  °C, increased wear and tear must be expected in case of working at higher temperatures
  • Single-phase connection
  • Furnace chamber lined with first-class, long-life fiber material, unclassified
  • Housing made of sheets of textured stainless steel
  • Dual shell housing for low external temperatures and high stability
  • Adjustable air inlet
  • Controller C450
  • NTLog for Nabertherm controller: recording of process data with USB-flash drive
  • Switching system with solid-state-relays, power tuned to the SiC rods
  • Easy replacement of heating rods
  • Defined application within the constraints of the operating instructions

Additional equipment

  • 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
  • Square saggar for charging of up to three layers
  • Lid for top saggar
  • Process control and documentation via VCD software package for monitoring, documentation and control
ModelTmaxInner dimensions in mmVolumeMaximumOuter dimensions in mmConnectedElectricalWeightMinutes
 °Cwdhin lunitsWDH1load kWconnection*in kgto Tmax2
HTCT 01/1615501101201201,545340300460 + 1953.51-phase1840
*These furnaces are available for main voltage of 110 V - 120 V resp. 200 V - 240 V, 1/N/PE or 2/PE
1Including opened lift door
2If connected at 230 V 1/N/PE
 

Accessories for Sintering Furnaces

Charge Saggars for Sintering Furnaces LHT 02/17 LB Speed and LHT 03/17 D

For charging zirconia workpieces charge saggars are recommended. A saggar basically consists of the sintering dish as base and the spacer ring with ventilation openings. The material is highly resistant to temperature fluctuations and can be used for processes with short heat-up and cool-down times.

When charging the furnace it must be ensured that the lower charge carrier is generally resting on the spacer ring. This provides for air-circulation under this carrier and improves the temperature uniformity. It is recommended to cover upper saggar with another sintering dish as lid.

The starter set consists of a charge saggar, a spacer ring as a base and a second sintering dish as lid. The use of additional saggars (sintering dish and spacer ring) allows charging on additional levels. Both furnace models are designed to get charged with up to three charge saggars.

Number of required charge levels in overview:

  • 1 level: Starter set which includes 2 sintering dishes and 2 spacer rings
  • 2 levels: Starter set + 1 sintering dish + 1 spacer ring
  • 3 levels: Starter set + 2 sintering dishes + 2 spacer rings
   
Starter-Set, Ø 115 mm Article No.: 699001066 Sintering Dish, Ø 115 mm Article No.: 699001054 Spacer Ring with Ventilation Openings Article No.: 699001055
         
 

Charge Saggar for Sintering Furnaces HTCT 01/16 and LHT 01/17 D

Placing the zirconia product in charge saggars provides for optimum utilization of the furnace chamber. Up to three saggars can be stacked in the furnaces. The integrated air slots ensure a better air circulation of the charge. The upper saggar can be closed with a separate ceramic lid.

   
Safe charging on up to three levels Charge Saggar, 110 x 75 x 30 mm Article No.: 699000279 Lid for Charge Saggar Article No.: 699000985
         
 

Note: The Accessories Described above are Designed for Cold Charging and Discharging. Removing the Accessories in Hot Condition is not Possible.
ModelHeating elementsSupport tubesThermocoupleSpring lift doorBottom plate
       
 Article No.ImageArticle No.Article No.Article No.Article No.
LHT 01/17 D4 x 692253380 -5403003842 x 691400598601604420
LHT 03/17 D4 x 692252721 -5403005542 x 691400599-
HTCT 01/164 x 602212884 -5403003842 x 691400598601604420
LHT 02/17 LB Speed4 x 692252721 -540300554--
LT 02/13 CR2 x 692253400 12 x 6920402515403002572 x 691400598-