Lift-Top or Lift-Bottom Furnaces up to 1400 °C, also as Combi Furnaces for Debinding and Sintering in One Process

In production lift-top and lift-bottom furnaces have the advantage in comparison with chamber furnaces that even complex charge loads can be clearly arranged. The basic furnace is equipped with a table fixed in place under the hood. The system can be expanded to include one or more changeable tables, either manually or motor driven. Depending on process conditions, a lift-top- or lift-bottom version is advisable. Further additional equipment like a multi-zone control to optimize the temperature uniformity or controlled cooling systems for shorter processes provide for customized solution with respect to the process requirements. A combi furnace version with Debinding Package I or II for debinding and sintering in a single process is also available. The furnaces are moreover perfectly suited for special applications like sintering fuel cells, in which auxiliary fittings must be introduced in the furnace from below or above.

• Tmax 1280 °C
• Double-walled housing with rear ventilation for low shell temperatures
• Electrohydraulically driven hood with fixed table
• Five-sided heating from all four sides and from the table provides for a good temperature uniformity
• Heating elements mounted on support tubes provide for free radiation and long service life of the heating wire
• Bottom heating protected by SiC tiles which provide for a level stacking surface
• Multilayer insulation consisting of lightweight refractory bricks backed by special insulation
• Long-life ceiling design with fiber insulation
• Manual exhaust air flap on the furnace roof
• Over-temperature limit controller with manual reset for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load

Additional equipment

• Customized dimensions
• Tmax to 1400 °C
• Lift-bottom furnace version with driven table and fixed hood
• Controlled cooling system with frequency-controlled cooling fan and motor-driven exhaust air flap
• Protective gas connection as well as sealing of the furnace housing for purging the furnace with protective gases
• Manual or automatic gas supply systems
• Multi-zone control adapted to the particular furnace provides model for optimal the temperature uniformity
• Commissioning of the furnace with test firing and temperature uniformity measurement (also with load) for the purpose of process optimization
• Additional tables, table changing system, also automatically driven
• Motor-driven exhaust air flap, switchable via the program
• Debinding Package I with passive safety package and monitoring of the underpressure in the furnace chamber, exhaust gas fan, fresh air fan, preset underpressure in the furnace chamber, controlled by Nabertherm controller P 300
• Debinding Package II with passive safety concept
• Exhaust air and exhaust gas piping
• Thermal or catalytic exhaust cleaning systems
• Heat recovery systems
• Emergency purging with nitrogen
• Process documentation and control with Controltherm MV software package for the basic furnace or Nabertherm Control Center (NCC) for monitoring, documentation and control in combination with Debinding Package II