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.

Tmax 1650 °C
Furnace chamber with a volume of 1 or 2 liters, table with large floor space
High-quality heating elements made of molybdenum disilicide offer very good protection against chemical interaction between charge and heating elements
Very good temperature uniformity thanks to three (LHT 02/17 LB Speed) or four-sided (LHT 01/17 LB Speed) 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 fibre” (RCF), which is classified and possibly carcinogenic, is not used
Precise, motorized toothed belt drive of the table with button operation
Forced cooling function with automatic, step-by-step opening from a preset temperature
Exhaust air vent in the roof
Type S thermocouple
Usable for sintering blanks of all leading manufacturers
Drying function: When starting the program the table will be driven in drying position and closes automatically at 500 °C
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

Model

Tmax

Work space dimensions2

Charging area

Maximum

Outer dimensions1

Max. connected load

Electrical

Weight

Heating time

in mm

in mm

in mm

in °C

w

d

h

w

d

units

W

D

H

in kW

connection*

in kg

in min3

LHT 01/17 LB Speed

1650

75

110

60

95

130

30

350

590

695

3.6

1-phase

45

35

LHT 02/17 LB Speed

1650

Ø 115

140

135

135

75

390

590

785

3.6

1-phase

55

60

1 External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.*These furnaces are available for main voltage of 200 V, 208 V, 220 V - 240 V, 1/N/PE or 2/PE

2 Corresponds to charge saggars with spacer

3 Heating 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)

Starting as a small family business, Nabertherm has developed into one of the leading industrial furnace manufacturers with 600 employees and 150,000 customers worldwide.

All furnaces are made in Germany and Nabertherm offers not only a first-class spare parts service, but also excellent customer service for our customers.

Benefit from more than 75 years of experience in furnace construction.

The Nabertherm range of dental furnaces and accessories is characterized by high quality, an excellent price/performance ratio and short delivery times.

Nabertherm offers a wide range of products for perfect results of your dental restorations, from preheating furnaces for investment materials and casting molds to a wide selection of sintering furnaces for zirconium oxide, translucent zirconium oxide and CoCr alloys as well as furnaces for stress-relieving annealing after laser sintering.

For firing all common veneering ceramics in normal atmosphere or under vacuum and for pressing systems under vacuum Nabertherm offers vacuum furnaces with a specially developed controller and many sample programs for free download.

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Review Nabertherm LHT 01/17 LB Speed High Temperature Furnace

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