The workpieces or materials to be heat treated are loaded into the pit through an access opening. The access opening can be equipped with doors or covers for secure sealing during the heat treatment process.
The furnace is heated using burners or electric heating elements. The heat is radiated or circulated into the pit, raising the temperature to the desired level for the specific heat treatment process.
The workpieces or materials inside the pit are exposed to the desired temperature and dwell time for the required heat treatment process. This can include heating, soaking, and cooling stages, depending on the specific requirements.
Once the heat treatment process is completed, the workpieces or materials are unloaded from the pit furnace. This can be done by lifting them out manually or using lifting equipment, depending on the size.