Lift-Top and Lift-Bottom Furnaces with Molybdenum Disilicide Heating Elements up to 1800 °C also as Combi Furnaces for Debinding and Sintering in one Process

The system can be expanded with one or more changeable tables, either manually or electrically driven.

Process Control

Function and equipment

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HT_Beheizung
HT_Beheizung2
HT276_18LTS
HT_Messaufbau
HT276_17LT_HDB
HT2600_16LT_DB200
HT273_17S

HT 64/16 LB or LT - HT 1080/17 LB or LT

For charging complex settings we recommend lift-top or lift-bottom furnaces. Also small workparts can be conveniently loaded on different layers.

The basic furnace comes with one table. Depending on the technical requirements are equipped, a lift-top or lift-bottom version will be the choice. The system can be expanded with one or more changeable tables, either manually or electrically driven. Other additional equipment, like controlled cooling systems to short process cycles or the addition of a debinding package for debinding and sintering in one process provide for tailored solution for individual needs.

  • Tmax 1600 °C, 1750 °C or 1800 °C
  • Dual shell housing with fan cooling provides for low shell temperatures
  • Lift-top design: electrohydraulically driven hood with fixed table
  • Lift-bottom design: driven table and fixed hood
  • Gently running, low-vibration spindle drive or electrohydraulic drive for larger models
  • Safe and tight closing of the furnace by means of labyrinth seal
  • Heating from all four sides provides for good temperature uniformity
  • High-quality fiber insulation backed by special insulation
  • Side insulation constructed with tongue and groove blocks provides for low heat dissipation to the outside
  • Long-life roof insulation with special suspension
  • Furnace table with special bottom reinforcement to accommodate high charge weights
  • Motorized exhaust air flap in the furnace roof, switchable at the program
  • Heating elements switched via SCR‘s
  • Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the oven and load
  • Defined application within the constraints of the operating instructions
  • NTLog Basic for Nabertherm Controller: Recording of process data with USB-flash drive

Process Control and Documentation

As one of the world's largest furnace manufacturers, Nabertherm has many years of experience in the design and manufacture of standardized and customer-specific control systems. All controls are characterized by a very high level of operating convenience and even the basic version has extensive basic functions. Depending on the requirements, the functions can be expanded and adapted to your needs. Professional software solutions for single or multiple furnace management as well as process and batch documentation based on our Nabertherm controllers complete the range. 

Also for compliance with industry-specific standards that define process control and documentation, such as for example, the AMS2750F for aviation, the CQI-9 in the automotive industry or the FDA in the pharmaceutical industry we offer standardized solutions.

Additional equipment

Additional equipment

  • Uncontrolled or controlled cooling system with frequency-controlled cooling fan and motorized exhaust air flap
  • Furnace in DB design featuring fresh air preheating, exhaust gas ventilation and an extensive safety package for debinding and sintering in one process, i. e. without transfering the material from the debinding furnace to the sintering furnace
  • Stainless steel exhaust gas hoods
  • Commissioning of the furnace with test firing and temperature uniformity measurement (also with load) for the purpose of process optimization
  • Temperature measurement with thermocouples, types B and type S with automatic pull-out device for precise control results in the low temperature range
  • Special heating elements for zirconia sintering provide for longer service life with respect to chemical interaction between charge and heating elements
  • Heat from all sides and between the stack or with heating elements, positioned above each other to optimize temperature uniformity
  • Protective gas connection for purging the furnace with non-flammable protective or reaction gases
  • Manual or automatic gas supply systems
  • Inner process box to improve the gas tightness and to protect the furnace chamber against contamination
  • Bottom insulation made of durable lightweight refractory bricks for heavy charge weights
  • Gas supply system in the furnace chamber with ceramic bell jar, protective gas inlet and outlet from below for better sealing when operating with protective gases and/or to prevent from chemical interactions between the load and the insulation or the heating elements
  • Alternative table changing systems
  • Safety concepts
  • Exhaust air and exhaust gas piping
  • Thermal or catalytic exhaust cleaning systems
  • FID measurement for process optimization
  • Process control and documentation via VCD software package or Nabertherm Control Center (NCC) for monitoring, documentation and control

Technical specifications

Model Tmax Inner dimensions in mm Volume Outer dimensions in mm Heating
power in Electrical Weight
  °C w d h in l W D H kW1 connection* in kg
HT 64/16 LB, LT 1600 400 400 400 64 1100 1750 2400 36 3-phase 1100
HT 166/16 LB, LT 1600 550 550 550 166 1350 2060 2600 42 3-phase 1500
HT 276/16 LB, LT 1600 1000 500 550 276 1800 2100 2600 45 3-phase 1850
HT 400/16 LB, LT 1600 1200 600 550 400 1900 2200 2680 69 3-phase 2600
HT 500/16 LB, LT 1600 1550 600 550 500 2100 2200 2680 69 3-phase 2700
HT 1000/16 LB, LT 1600 1000 1000 1000 1000 1800 2900 3450 140 3-phase 3000
HT 1030/16 LB, LT 1600 2200 600 780 1030 2950 2500 3050 160 3-phase 3200
                       
HT 64/17 LB, LT 1750 400 400 400 64 1100 1750 2400 36 3-phase 1100
HT 166/17 LB, LT 1750 550 550 550 166 1350 2060 2600 42 3-phase 1500
HT 276/17 LB, LT 1750 1000 500 550 276 1800 2100 2600 45 3-phase 1850
HT 400/17 LB, LT 1750 1200 600 550 400 1900 2200 2680 69 3-phase 2600
HT 500/17 LB, LT 1750 1550 600 550 500 2100 2200 2680 69 3-phase 2700
HT 1000/17 LB, LT 1750 1000 1000 1000 1000 1800 2900 3450 140 3-phase 3000
HT 1030/17 LB, LT 1750 2200 600 780 1030 2950 2500 3050 160 3-phase 3200
                       
HT 64/18 LB, LT 1800 400 400 400 64 1100 1750 2400 36 3-phase 1100
HT 166/18 LB, LT 1800 550 550 550 166 1350 2060 2600 42 3-phase 1500
HT 276/18 LB, LT 1800 1000 500 550 276 1800 2100 2600 45 3-phase 1850
HT 400/18 LB, LT 1800 1200 600 550 400 1900 2200 2680 69 3-phase 2600
HT 500/18 LB, LT 1800 1550 600 550 500 2100 2200 2680 69 3-phase 2700
HT 1000/18 LB, LT 1800 1000 1000 1000 1000 1800 2900 3450 140 3-phase 3000
HT 1030/18 LB, LT 1800 2200 600 780 1030 2950 2500 3050 160 3-phase 3200
1Depending on furnace design connected load might be higher *Please see page 77 for more information about supply voltage

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Customer Test Center

What furnace is the right choice for this specific process? This question cannot always be answered easily. Therefore, we have set up our modern test center which is unique in respect to size and variety. A representative number of furnaces is available for tests for our customers.