The retort furnace is a variant with a sealed, gas-tight firing chamber (retort). Retort furnaces are suitable for heat treatment in a controlled, closed atmosphere. Accordingly, they are used for carburizing, nitriding and carbonitriding.
The HOFMANN retort furnace meets the highest requirements regarding insulation, heating element, service life and gas-tight design of the retort, good air circulation and temperature accuracy.
Patented, long-life vertical heating modules from HOFMANN, are also used in retort furnaces. Due to the vertical design, undesirable radiator deformations can be avoided with these modules.