High-Temperature Sintering Furnaces with lifting table up to 1650 °C for Sintering of Translucent Zirconia

Due to their maximum temperature of 1650 °C and their large furnace chamber, the high-temperature sintering furnaces are perfectly suited for sintering translucent zirconia. The electrically driving lifting table significantly simplifies the charging of the high-temperature furnace. The all-around heating of the cylindrical furnace chamber ensures a very even temperature uniformity.

Equipped with special heating elements made of molybdenum disilicide, chemical interactions between the charge and the furnace components are almost avoided. The sintered material is placed in saggars made of technical ceramics. Up to two batch containers for max. 15 single 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 saggars for max. 25 individual crowns per level and thus guarantees high productivity. 

The high-temperature sintering furnaces are additionally equipped with a drying as well as a forced cooling function. For residual drying, the oven remains open gapwise during heating up to a defined temperature and thus ensures reliable removal of moisture. For accelerated cooling, the furnace is automatically opened step by step under program control. Depending on the batch used and the saggars, these high-temperature furnaces can achieve total cycle times of less than two and a half hours. The furnaces can be individually programmed for all recommended sintering curves of all zirconia manufacturers. 

Key Facts

• Suitable for sintering zirconia from all leading manufacturers
• Ideal for high capacity utilization dental labs
• Maximum heating rate up to 1000 °C at 60 °C/min (LHT 01/17 LB Speed) or 20 °C/min (LHT 02/17 LB Speed)
• Fastest cooling time to 300 °C in 86 minutes (LHT 01/17 LB Speed) or 107 minutes (LHT 02/17 LB Speed)
• Sintering capacity of 30 to 75 single crowns/bridges and full arches
• Very good temperature uniformity due to allround heating of the furnace chamber
• Dual shell housing made of textured stainless steel sheets with additional fan cooling for low surface temperature
• Exclusive use of insulation materials without categorization according to EC Regulation No 1272/2008 (CLP). This explicitly means that alumino silicate wool, also known as “refractory ceramic fiber” (RCF), which is classified and possibly carcinogenic, is not used
• Precise, motorized toothed belt drive of the table with button operation
• Predrying function
• Controlled cooling function
• Controller with touch operation P580 (50 programs with each 40 segments), 2 preset sample programs
• MyNabertherm App for online monitoring of the firing on mobile devices for free download
• Freeware NTEdit for convenient program input via Excel^TM for Windows^TM  on the PC
• Freeware NTGraph for evaluation and documentation of firings using Excel^TM for Windows^TM  on the PC
• NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive
• Defined application within the constraints of the operating instructions