Laboratory /
High-Temperature Furnaces up to 1800 °C

High-Temperature Furnaces with SiC Rod Heating up to 1600 °C

High-temperature furnace LHTCT 01/16 High-temperature furnace LHTC 08/16

Gas supply system for non-flammable protective or reactive gas

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

These powerful laboratory muffle furnaces are available for temperatures up to 1400 °C, 1500 °C, 1550 °C or 1600 °C. The durability of the SiC rods in periodic use, in combination with their high heating speed, make these high-temperature furnaces to all-rounders in the laboratory. Heating times of 20 - 25 minutes to 1400 °C can be achieved, depending on the furnace model and the conditions of use.

Standard Equipment

  • Tmax 1400 °C, 1500 °C, 1550  °C or 1600 °C
  • Working temperature 1500 °C (for high-temperature furnaces LHTC ../16), increased wear and tear must be expected in case of working at higher temperatures
  • Optional flap door (LHTC) which can be used as work platform or lift door (LHTCT) with hot surface facing away from the operator (High-temperature furnace LHTCT 01/16 only with lift door)
  • Switching system with solid-state-relays, power tuned to the SiC rods
  • Easy replacement of heating rods
  • Adjustable air inlet opening, exhaust air opening in the roof
  • Controller C450 (10 programs with each 20 segments)

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
  • Protective gas connection to purge with non-flammable protective or reaction gases, not gas tight
  • Manual or automatic gas supply system
ModelTmaxInner dimensions in mmVolumeOuter dimensions1 in mmConnectedElectricalWeightHeating time
 in °Cwdhin lWDH2load in kWconnection*in kgin min3
LHTC(T) 03/1414001202101203.041554549010.03-phase43020
LHTC(T) 08/1414001702901708.049062554015.53-phase4020
             
LHTC(T) 03/1515001202101203.041554549010.03-phase43025
LHTC(T) 08/1515001702901708.049062554015.53-phase4020
             
LHTCT 01/1615501101201201.53403004603.51-phase1830
LHTC(T) 03/1616001202101203.041554549010.03-phase43030
LHTC(T) 08/1616001702901708.049062554015.53-phase4025
1External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.*Please see page 75 for more information about supply voltage
2Plus maximum 240 mm for models LHTCT when open4Heating only between two phases
3Heating time of the empty and closed furnace up to Tmax −100 K (connected to 230 V 1/N/PE rsp. 400 V 3/N/PE)
 

High-Temperature Furnaces with MoSi2 Heating Elements up to 1800 °C

High-temperature furnace LHT 03/17 D High-temperature furnace LHT 01/17 D

Saggars with top lid

Example of an over-temperature limiter

Designed as tabletop models, these compact high-temperature furnaces have a variety of advantages. The first-class workmanship using high-quality materials, combined with ease of operation, make these furnaces all-rounders in research and the laboratory. These high-temperature furnaces are also perfectly suited for the sintering of technical ceramics, such as zirconium oxide dental bridges.

Standard Equipment

  • Tmax 1600 °C, 1750 °C, or 1800 °C
  • Recommended working temperature 1750 °C (for models LHT ../18), increased wear and tear must be expected in case of working at higher temperatures
  • High-quality molybdenum disilicide heating elements
  • Adjustable air inlet opening, exhaust air opening in the roof
  • Type B thermocouple
  • Controller P470 (50 programs with each 40 segments)

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
  • Protective gas connection to purge with non-flammable protective or reaction gases, not gas tight
  • Manual or automatic gas supply system
ModelTmaxInner dimensions in mmVolumeOuter dimensions1 in mmConnectedElectricalWeightHeating time
 in °Cwdhin lWDH2load in kWconnection*in kgin min3
LHT 02/161600901501502470630760+2603.01-phase7530
LHT 04/1616001501501504470630760+2605.23-phase48525
LHT 08/1616001503001508470810760+2608.03-phase410025
             
LHT 01/17 D16501101201201385425525+1952.91-phase2835
LHT 03/17 D16501351552004470630760+2603.01-phase7530
             
LHT 02/171750901501502470630760+2603.01-phase7535
LHT 04/1717501501501504470630760+2605.23-phase48530
LHT 08/1717501503001508470810760+2608.03-phase410030
             
LHT 02/181800901501502470630760+2603.61-phase7560
LHT 04/1818001501501504470630760+2605.23-phase48540
LHT 08/1818001503001508470810760+2609.03-phase410040
1External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.*Please see page 75 for more information about supply voltage
2Including opened lift door4Heating only between two phases
3Heating time of the empty and closed furnace up to Tmax −100 K (connected to 230 V 1/N/PE rsp. 400 V 3/N/PE)
 

High-Temperature Bottom Loading Furnaces up to 1700 °C

High-temperature furnace LHT 02/17 LB Speed with a set of saggars

Electrically driven lift-bottom

Saggar

Furnace chamber heated on four sides for model LHT 01/17 LB Speed

The motor-driven lifting table significantly simplifies the charging of the high-temperature furnaces LHT ../.. LB (Speed). The heating all around the cylindrical furnace chamber provides for an opitimal temperature uniformity. For the tabletop models LHT 01/17 LB Speed and LHT 02/17 LB Speed the charge can be placed in charge saggars made of technical ceramics. Up to three charge saggars can be stacked on top of each other resulting in a high productivity.

Standard Equipment

  • Tmax 1650 °C, 1700 °C (LHT 16/17 LB)
  • High-quality heating elements made of molybdenum disilicide offer very good protection against chemical interaction between charge and heating elements
  • Excellent temperature uniformity thanks to three (LHT 02/17 LB Speed) or four-sided (LHT 01/17 LB Speed) heating of the furnace chamber
  • Furnace chamber with a volume of 1, 2 or 16 liters, table with large floor space
  • Precise, motorized toothed belt drive of the table with button operation
  • Exhaust air vent in the roof
  • Type S thermocouple
  • Controller P470 (50 programs with each 40 segments)

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
  • Stackable saggars for loading in up to two or three levels, depending on model
  • Adjustable air inlet through the floor
ModelTmaxInner dimensions in mmVolumeOuter dimensions1 in mmConnectedElectricalWeight
 in °Cwdhin lWDHload in kWconnection*in kg
LHT 01/17 LB Speed165014518010013505906802.91-phase40
LHT 02/17 LB Speed165018518018523905907653.41-phase50
LHT 16/17 LB1700Ø 260260166501250198012.03-phase410
1External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.*Please see page 75 for more information about supply voltage
 

High-Temperature Furnaces with Scale for Determination of Combustion Loss and Thermogravimetric Analysis (TGA) up to 1750 °C

High-temperature furnace LHT 04/16 SW with scale for measuring weight reduction during annealing

4 scales available for different maximum weights and scaling ranges

Software for documentation of the temperature curve and combustion loss using a PC

High-quality molybdenum disilicide heating elements

These high-temperature furnaces were specially developed to determine combustion loss during annealing and for thermogravimetric analysis (TGA) in the lab. The complete system consists of the high-temperature furnace for 1600 °C or 1750 °C, a table frame, precision scale with feedthroughs into the furnace and powerful software for recording both the temperature curve and the weight loss over time.

Standard Equipment

  • Tmax 1600 °C or 1750 °C
  • High-quality molybdenum disilicide heating elements
  • Dual shell housing made of textured stainless steel sheets with additional fan cooling for low surface temperature
  • Adjustable air inlet
  • Exhaust air opening in the roof
  • Type B thermocouple
  • Delivery includes base, ceramic plunger with base plate in the furnace lining, precision scale and software package
  • 4 scales available for different maximum weights and scaling ranges
  • Process control and documentation for temperature and combustion loss via VCD software package for monitoring, documentation and control
ModelTmaxInner dimensions in mmVolumeOuter dimensions1 in mmConnectedElectricalWeightHeating time
 in °Cwdhin lWDHload in kWconnection*in kgin min2
LHT 04/16 SW160015015015046553708905.03-phase38525
LHT 04/17 SW175015015015046553708905.03-phase38530
1External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.*Please see page 75 for more information about supply voltage
2Heating time of the empty and closed furnace up to Tmax −100 K (connected to 230 V 1/N/PE rsp. 400 V 3/N/PE)
3Heating only between two phases
ScaleReadabilityMaximum weighing rangeWeight of plungerCalibration valueMinimum load
typein gin gin gin gin g
EW-22000.012200 incl. plunger8500.10.5
EW-42000.014200 incl. plunger8500.10.5
EW-62000.016200 incl. plunger850-1.0
EW-120000.1012000 incl. plunger8501.05.0
 

High-Temperature Furnaces with Molybdenum Disilicide Heating Elements with Fiber Insulation up to 1800 °C

High-temperature furnace HT 16/17 High-temperature furnace HT 160/17 with gas supply system

High-temperature furnace HT 64/16S with lift door

High-temperature furnace HT 64/17 DB100-2 with safety package for debinding

Automatic gas supply system with solenoid valve and rotameter

Two-door design for high-temperature furnaces > HT 276/..

Reinforced floor as protection for bottom insulation for high-temperature furnace HT 16/16 and higher

Due to their solid construction and compact stand-alone design, these high-temperature furnaces are perfect for processes in the laboratory where the highest precision is needed. Oustanding temperature uniformity and practical details set very high quality benchmarks. For configuration for your processes, these furnaces can be extended with extras from our extensive option list.

Standard Equipment

  • Tmax 1600 °C, 1750 °C, or 1800 °C
  • Recommended working temperature 1750 °C (for models HT ../18), increased wear and tear must be expected in case of working at higher temperatures
  • Dual shell housing with fan cooling for low shell temperatures
  • Heating from both sides via molybdenum disilicide heating elements
  • High-quality fiber insulation backed by special insulation
  • Side insulation constructed with tongue and groove blocks provides for low heat loss to the outside
  • Long-life roof insulation with special suspension
  • Chain-guided parallel swivel door for defined opening and closing of the door
  • Two-door design (front/back) for high-temperature furnaces from HT 276/..
  • Labyrinth sealing ensures the least possible temperature loss in the door area
  • Reinforced floor as protection for bottom insulation as standard from models HT 16/16 upwards (distributed load 5 kg/dm2)
  • Vapor vent in the furnace roof with motor-driven exhaust air flap, controlled via the extra function of the controller
  • Heating elements switched via thyristors

Additional Equipment

  • Cooling system to cool the furnace with a defined temperature gradient or with a preset fresh air volume. Both operating modes can be switched on and off for different segments by means of the extra function of the controller.
  • Safety package for debinding in air. Debinding technical ceramics is a critical process because of the hydrocarbons that are released. Hydrocarbons are flammable and there is a risk that a flammable mixture could form inside the furnace. Nabertherm offers tailored safety packages with respect to the process and the volume of binder that allow the furnace to be operated safely.
  • Special heating elements for zirconia sintering
  • Protective gas connection to purge with non-flammable protective or reaction gases
  • Automatic gas supply system with solenoid valve and rotameter, controlled by the extra function of the controller
  • Inner process box to improve the gas tightness and to protect the furnace chamber against contamination
  • Refractory brick floor insulation for a higher floor load (Tmax 1700 °C)
  • Lift door
  • Automatic door lock incl. door contact switch
  • Ethernet interface
ModelTmaxInner dimensions in mmVolumeOuter dimensions1 in mmConnectedElectricalWeight
 °Cwdhin lWDHload kWconnection*in kg
HT 08/161600150300150874064017558.53-phase2215
HT 16/16160020030026016820690186012.53-phase2300
HT 29/1616002753003502998574019909.83-phase2340
HT 40/161600300350350401010800199012.53-phase420
HT 64/161600400400400641140890204018.53-phase555
HT 128/16160040080040012811401280204026.53-phase820
HT 160/16160050055055016012501040224021.53-phase880
HT 276/161600500100055027613101600229036.53-phase1300
HT 450/161600500115078045013601800257065.03-phase1450
            
HT 08/171750150300150874064017558.53-phase2215
HT 16/17175020030026016820690186012.53-phase2300
HT 29/1717502753003502998574019909.83-phase2340
HT 40/171750300350350401010800199012.53-phase420
HT 64/171750400400400641140890204018.53-phase555
HT 128/17175040080040012811401280204026.53-phase820
HT 160/17175050055055016012501040224021.53-phase880
HT 276/171750500100055027613101600229036.53-phase1300
HT 450/171750500115078045013601800257065.03-phase1450
            
HT 08/181800150300150874064017558.53-phase2215
HT 16/18180020030026016820690186012.53-phase2300
HT 29/1818002753003502998574019909.83-phase2340
HT 40/181800300350350401010800199012.53-phase420
HT 64/181800400400400641140890204018.53-phase555
HT 128/18180040080040012811401280204026.53-phase820
HT 160/18180050055055016012501040224021.53-phase880
HT 276/181800500100055027613101600229036.53-phase1300
HT 450/181800500115078045013601800257065.03-phase1450
1External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.*Please see page 75 for more information about supply voltage
2Heating only between two phases
 

High-Temperature Furnaces with SiC Rod Heating up to 1550 °C

High-temperature furnace HTC 160/16

Vertically mounted SiC rods and optional perforated air inlet tubes of the debinding system in a high-temperature furnace

Automatic gas supply system

Two-door design for high-temperature furnaces > HT 276/..

The high-temperature furnaces HTC 16/16 - HTC 450/16 are heated by vertically hung SiC rods, which makes them especially suitable for sintering processes up to a maximum operating temperature of 1550 °C. For some processes, e.g. for sintering zirconium oxide, the absence of interactivity between the charge and the SiC rods, these models are more suitable than the alternatives heated with molybdenum disilicide elements. The basic construction of these furnaces make them comparable with the already familiar models in the HT product line and they can be upgraded with the same additional equipment.

Standard Equipment

  • Tmax 1550 °C
  • Dual shell housing with fan cooling for low shell temperatures
  • Heating from both sides via vertically mounted SiC rods
  • High-quality fiber insulation backed by special insulation
  • Side insulation constructed with tongue and groove blocks provides for low heat loss to the outside
  • Long-life roof insulation with special suspension
  • Chain-guided parallel swivel door for defined opening and closing of the door without destroying the insulation
  • Two-door design (front/back) for high-temperature furnaces > HTC 276/..
  • Labyrinth sealing ensures the least possible temperature loss in the door area
  • Reinforced floor as protection for bottom insulation
  • Vapor vent in the furnace roof with motor-driven exhaust air flap, controlled via the extra function of the controller
  • Heating elements switched via SCR‘s
  • 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

Additional Equipment

  • Like HT models
ModelTmaxInner dimensions in mmVolumeOuter dimensions1 in mmHeating PowerConnectedElectricalWeight
 in°Cwdhin lWDHin kWload in kWconnection*in kg
HTC 16/16155020030026016810700150012.016.03-phase2270
HTC 40/161550300350350401000800162012.016.13-phase380
HTC 64/161550400400400641130900167018.041.13-phase550
HTC 128/16155040080040012811301290167026.060.43-phase750
HTC 160/16155050055055016012501050190021.039.23-phase800
HTC 276/161550500100055027613001600190036.072.53-phase1100
HTC 450/161550500115078045013501740212064.0118.03-phase1500
1External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.*Please see page 75 for more information about supply voltage
2Heating only between two phases
 

High Temperature Furnaces with Molybdenum Disilicide Heating Elements with Refractory Brick Insulation up to 1700 °C

High-temperature furnace HFL 16/17 DB50

Gas supply system for non-flammable protective or reaction gases

Thermocouple port in the ceiling with tripod

Light-weight refractory bricks and heating elements made from molybdenum disilicide

The high-temperature furnaces HFL 16/16 HFL 160/17 are characterized by their lining with robust light refractory bricks. This version is recommended for processes producing aggressive gases or acids, such as under glass melting.

Standard Equipment

  • Like high-temperature furnaces HT (see page 39), except:
  • Tmax 1600  °C or 1700  °C
  • Robust refractory brick insulation and special backing insulation
  • Furnace floor made of lightweight refractory bricks accommodates high charge weights
  • Chain-guided parallel swivel door for defined opening and closing of the door without destroying the insulation
  • Labyrinth sealing ensures the least possible temperature loss in the door area

Additional Equipment

  • Like high-temperature furnaces HT
  • Protective gas connection to purge with non-flammable protective or reaction gases
  • Automatic gas supply system with solenoid valve and rotameter, controlled by the extra function of the controller
  • Lift door
ModelTmaxInner dimensions in mmVolumeOuter dimensions1 in mmConnectedElectricalWeight
 in °Cwdhin lWDHload in kWconnection*in kg
HFL 16/1616002003002601610008901620123-phase2500
HFL 40/1616003003503504011309151890123-phase660
HFL 64/1616004004004006412309801940183-phase880
HFL 160/161600500550550160140012502100213-phase1140
            
HFL 16/1717002003002601610008901620123-phase2530
HFL 40/1717003003503504011309151890123-phase690
HFL 64/1717004004004006412309801940183-phase920
HFL 160/171700500550550160140012502100213-phase1190
1External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.*Please see page 75 for more information about supply voltage
2Heating only between two phases