Abstract: An arrangement for transporting metallic work pieces includes a heat-insulated transport chamber, means for loading and unloading the work pieces, and transporting gear. To enable the flexible and efficient transport of the work pieces among a number of treatment chambers in an arrangement of this type during a heat treatment process, the transport chamber is designed to be vacuum-tight, such that it can be evacuated of air to create a vacuum that will protect the work pieces from environmental influences. In addition, a system for heat treating metallic work pieces, comprising at least two treatment chambers in which the work pieces can be heat treated, is characterized in that an arrangement of this type can be coupled to the treatment chambervia a transfer canal that can be evacuated.

Abstract: An arrangement for transporting metallic work pieces (20) comprises a heat-insulated transport chamber (10), means (40) for loading and unloading the work pieces (20), and transporting gear (30). To enable the flexible and efficient transport of the work pieces among a number of treatment chambers in an arrangement of this type during a heat treatment process, the transport chamber (10) is designed to be vacuum-tight, such that it can be evacuated of air to create a vacuum that will protect the work pieces (20) from environmental influences.

Abstract: The furnace effects a partial heat-treatment of drills and similar tools having a clamping portion and a working portion and with respect to which it is important to subjecting only the working portion, to a heat treatment, particularly hardening. The physical properties of the clamping portion are, retained essentially in their original state during the heat treatment. The furnace is provided with a tool receiver that cooperates with hearth-bottom plates that are traversed by cooling fluid. The tool receiver assures that the drills or other similar tools are maintained in their clamping portion at substantially the same temperature level during the heat treatment while the working portion of the tools is freely exposed to the heating and quenching.

Abstract: An apparatus for the control of the carburizing of parts under vacuum in a acuum furnace, with which as a carbon carrier a hydrocarbon gas is introduced controlled in the furnace. A detector detects the occurrence of a soot mist formation. Upon the occurrence of the soot mist a feeder for the hydrocarbon addition is completely or partially interrupted. The detector cooperates with the feeder such that the hydrocarbon addition is again received when the soot mist formation has decayed.

Abstract: A method and apparatus for the control of the carburizing of parts under vacuum in a vacuum furnace, with which as a carbon carrier a hydrocarbon gas is introduced controlled in the furance. As the control quantity a soot mist formation is used in such a manner that the occurrence of the soot mist is determined, that upon the occurrence of the soot mist the hydrocarbon addition is completely or partially interrupted, and that the hydrocarbon addition is again received if the soot mist formation has dampened out.