HOOD OVEN / TOP HAT FURNACES Type HL/HLg/HO/HOg
Top hat furnaces realize that the circulating fan can be installed in the furnace base or in the furnace cover. The charging plate is more accessible than with a shaft furnace. This can be
advantageous for components which are difficult to charge. Thus no large furnace pits are necessary.
If several charging stations are available, an increase in capacity can be achieved by separate, removable heating and cooling hoods.
specifications
| Procedures | annealing, tempering, nitriding |
| Charging | by crane, by forklift truck possible partially or fully automated |
|
Lid types |
by crane or lifting equipment |
|
Door mechanism |
manual, hydraulic or by electric motor |
|
Construtcion sizes |
from 2 m³ upwards |
|
Construction variants |
with or without retort |
| Temperature range | up to 1.100°C |
| Insulation | solid or lightweight construction |
technical data
|
Heating type |
gas-fired or electrical |
|
Cooling |
active or passive (via combustion air fan) |
|
Temp. distribution |
via Air circulation up to +/- 1,5 K |
| Atmosphere | air, nitrogen, nitriding atmosphere |
| Programme controller |
Rod, PE |
|
Gassing |
separate gassing cabinet, ammonia splitter |
