Nabertherm High Temperature Moving Floor Furnace

Nabertherm High-Temperature Moving-Bottom Furnace up to 1650 °C with Rapid Cooling For Sintering Translucent Zirconia

Due to their maximum temperature of 1650 °C, the high-temperature moving-bottom furnaces are ideally suited for sintering translucent zirconium oxide. The motor-driven lift table makes charging the high-temperature furnace much easier. The all-round heating of the furnace chamber ensures a very even temperature distribution.

Equipped with special heating elements made of molybdenum disilicide, chemical interactions between the charge and the furnace components are avoided in the best possible way. The sintered material is placed in batch containers made of technical ceramics. Up to two batch containers for max. 15 individual crowns per level can be accommodated in the LHT 01/17 LB Speed. The LHT 02/17 LB Speed offers space for up to three charge containers for max. 25 single crowns per level and thus guarantees high productivity.

The high-temperature walking floor ovens are additionally equipped with both a drying and a rapid cooling function. For residual drying, the oven remains open a gap during heating up to a defined temperature, thus ensuring safe moisture removal. For accelerated cooling, the oven is automatically opened in stages under programme control. Depending on the batch used and the batch containers, total cycle times of less than two and a half hours can be achieved with these high-temperature ovens. The furnaces can be individually programmed for all recommended sintering curves of all zircon manufacturers.

• Tmax 1650 °C
• Furnace chamber with 1 or 2 litre volume, table with large base area
• High-quality heating elements made of molybdenum disilicide offer the best possible protection against chemical interaction between charge and heating elements
• Attractive, double-walled stainless steel housing
• Only use of insulating materials that are not classified as carcinogenic according to TRGS 905, class 1 or 2
• Excellent temperature uniformity due to all-round heating of the oven chamber
• Scope of delivery includes a starter set for charging in one level, further levels as additional equipment
• Precise, motorised toothed belt drive of the table with push-button operation
• Residual drying function for better ventilation of the oven when heating up
• Rapid cooling function with automatic, gradual opening from a pre-set temperature
• Exhaust air opening in the ceiling
• Type S thermocouples
• Controller P with memory for 50 programmes, 2 sample programmes
• Suitable for sintering the blanks of all leading manufacturers
• Drying function: The table is moved into drying position at the start of the programme and closes automatically at 500 °C
• Intended use within the scope of the operating instructions
• NTLog Basic for Nabertherm controller: Recording of process data with USB stick

Additional equipment (optional)

• Over-temperature limit controller with adjustable shut-off temperature for thermal protection class 2 acc. to EN 60519-2 as overtemperature protection for the oven and the load
• Batch containers stackable for charging in up to two or three levels, depending on model
• Process control and documentation via VCD software package for monitoring, documentation and control

Please state the required supply voltage when ordering.