Continuously operating furnaces are ideal for heat treatment of large numbers of small parts in a protective or reaction gas atmosphere, such as brazing, hardening, or annealing.
Controlled protective gas atmospheres are generated in the furnace by using a gas tight retort. If hydrogen or cracked gas is used for the process, the furnace is equipped with the corresponding safety technology.
Parameters such as maximum working temperature, exposure, and geometry of the charge all play a role in the choice of the conveying system. Established conveyor concepts include metal belts or rollers. Wire and strand annealing furnaces are used to anneal wires or strands; in this case, the charge is unwound in front of the furnace, drawn through the furnace and is then wound again behind the furnace.
To cool the components faster, a water-cooled dual shell is installed directly behind the heating zone; the length of this is determined by the required unloading temperature.
Catalytic debinding |
Thermal debinding furnace1 | Solvent debinding system2 | Sintering furnace3 | Volume | Work space in mm | Quantity | Number of shelves 170 x 250 mm |
Shelves Work space |
||
---|---|---|---|---|---|---|---|---|---|---|
furnace | in l | w | d | h | levels | total (level) | in m² | |||
NRA 40 CDB | NR 40/11.. | EBA-200NT EDA-200NT |
VHT 40/15 .. MIM | 40 | 340 | 500 | 240 | 6 | 24 (2x2) | 1 |
NRA 80 CDB | NR 80/11.. | EBA-250NT EDA-250NT |
VHT 80/15 .. MIM | 80 | 340 | 750 | 320 | 8 | 48 (2x3) | 2 |
NRA 160 CDB | NR 160/11.. | EBA-450NT | VHT 160/15 .. MIM | 160 | 500 | 680 | 480 | 12 | 96 (2x4) | 4 |
NRA 320 CDB | NR 320/11.. | EBA-900NT | VHT 320/15 .. MIM | 320 | 680 | 750 | 640 | 16 | 192 (4x3) | 8 |
1IDB (debinding in non-flammable process gases), H2 (debinding in hydrogen) 2Models from Lömi GmbH, designed to work together with Nabertherm sintering furnaces, specifications according to Lömi GmbH 3MO: Molybdenum, GR: Graphite |