Characteristics * Transport device with conveyor belt or roller hearth * Electric or with fuel gas * No muffle in hot zone * Protective gas provided through partial combustion of a fuel gas (natural gas, propane, LPG) or a nitrogen/hydrogen mixture inside the furnace. Requires no separate protective gas generator from 850 °C upwards! * Saves energy through generation of protective gas inside the furnace With protective atmosphere for heat treatment of machine components made of easily reducible steel and copper alloys.