Thermal furnace HT series

sinteringheatingfor dental laboratories

Overview
This compact stand-alone HT series furnace provides excellent temperature uniformity and precise control for laboratory sintering, debinding and heat-treatment up to 1800 °C. Robust construction, ventilated dual-shell housing and bilateral MoSi2 heating make it suitable for demanding thermal processes. A wide range of factory options allows configuration to specific applications.

Function and equipment
Standard features include:

• Tmax options: 1600 °C, 1750 °C or 1800 °C; recommended working temperature approx. 50 °C below Tmax
• Ventilated dual-shell stainless steel housing for low surface temperature and high stability
• Bilateral heating with molybdenum disilicide (MoSi2) elements
• High-quality fiber insulation with special rear insulation and long-life suspended roof insulation
• Temperature uniformity: ±6 °C at 1450 °C (DIN 17052-1)
• Exclusive use of insulation materials not classified under EC Reg. No. 1272/2008 (no alumino-silicate wool/RCF)
• Chain-guided parallel swivel door; two-door design available on larger models
• Labyrinth sealing to minimise heat loss at the door
• Reinforced floor from HT 16/16 for increased floor load capacity (distributed load 5 kg/dm²)
• Vapor vent in roof with motorised exhaust flaps and stainless steel exhaust hood for extraction interface
• P570 touch controller (50 programs × 40 segments) and NTLog Basic for USB process data recording

Additional equipment
Selectable options include:

• Controlled cooling system (defined temperature gradient or preset fresh air volume)
• Safety packages for debinding in air (for hydrocarbon release)
• Thermocouple feedthroughs with screw cap and calibrated thermocouples
• Protective gas purge connections and automatic gas supply with solenoid valve and rotameter
• Refractory brick floor insulation for higher floor loads (Tmax 1700 °C)
• Lift door, automatic door lock and door contact switch
• Mechanical protection for heating elements and special element qualities (e.g. for zirconia)
• Ethernet interface and VCD/NCC process control & documentation software

Technical specifications (excerpt)
Header: Model | Tmax (°C) | Inner w x d x h (mm) | Volume (l) | Outer W x D x H (mm) | Connected load (kW) | Electrical connection | Weight (kg)
HT 08/16 | 1600 °C | 150 x 300 x 150 | 8 l | 740 x 640 x 1755 | 8.5 kW | 3-phase (2) | 215 kg
HT 16/16 | 1600 °C | 200 x 300 x 260 | 16 l | 820 x 690 x 1860 | 12.5 kW | 3-phase (2) | 300 kg
HT 29/16 | 1600 °C | 275 x 300 x 350 | 29 l | 985 x 740 x 1990 | 9.8 kW | 3-phase (2) | 350 kg
HT 40/16 | 1600 °C | 300 x 350 x 350 | 40 l | 1010 x 800 x 1990 | 12.5 kW | 3-phase | 420 kg
… Variants with Tmax 1750 °C and 1800 °C available (models /17 and /18); outer dimensions may vary with options.

Technical characteristics

• Heating: molybdenum disilicide (MoSi2) bilateral heating
• Insulation: high-quality fiber insulation without RCF classification
• Temperature range: 1600 / 1750 / 1800 °C depending on model
• Uniformity example: ±6 °C at 1450 °C (DIN 17052-1)
• Controller: P570 touch; data logging via NTLog Basic (USB)
• Process options: gas purge, automatic gas supply, controlled cooling, debinding safety packages
• Construction features: ventilated dual-shell stainless housing, chain-guided parallel door, reinforced floor options