Abstract: The invention relates to a method and device for thermally treating workpieces, the device including a cooling chamber and two or more carburizing or heating chambers in which the workpieces are heated to a temperature of 950 to 1200° C. by means of radiation, such as direct heat radiation from a heating device.

Abstract: The invention relates to a method and device for thermally treating workpieces, the device including a cooling chamber and two or more carburizing or heating chambers in which the workpieces are heated to a temperature of 950 to 1200° C. by means of radiation, such as direct heat radiation from a heating device.

Abstract: The invention relates to a method and device for thermally treating workpieces, the device including a cooling chamber and two or more carburizing chambers in which the work pieces are heated to a temperature of 950 to 1200° C. by means of direct heat radiation from a heating device.

Abstract: The invention relates to a method and device for thermally treating workpieces, the device including a cooling chamber and two or more cementing chambers in which the workpieces are heated to a temperature of 950 to 1200° C. by means of direct heat radiation from a heating device.

Abstract: An arrangement for quenching structural components in a hot gas stream with which rapid cooling of the structural components to a holding temperature takes place at which transformation of the austenitic structure to bainite occurs. The control of the process can be carried out if a thermal buffer is disposed in the cooling gas stream.

Abstract: In an apparatus for the treatment of metallic workpieces (4) with cooling gas, having a cylindrical housing (3) with an opening at the end face for introducing and removing the workpieces (4), two support plates (6, 7) extending in parallel planes vertically in the housing (3) and two air-guiding plates (14, 15) are provided, the workpiece batch (4) being held between the support plates (6, 7), and the air-guiding plates (14, 15) each forming, with the adjacent support plates (6, 7) and with the respectively adjacent inner wall of the housing, shafts (16, 17 and 26, 27, respectively) through which the cooling gas conveyed by blowers held on the housing (3) flows, controlled by reversing flaps (18, 19, 20, 21) arranged at the upper and lower ends of the air-guiding plates (14, 15).

Abstract: In an apparatus for the treatment of metallic workpieces (4) with cooling gas, having a cylindrical housing (3) with an opening at the end face for introducing and removing the workpieces (4), two support plates (6, 7) extending in parallel planes vertically in the housing (3) and two air-guiding plates (14, 15) are provided, the workpiece batch (4) being held between the support plates (6, 7), and the air-guiding plates (14, 15) each forming, with the adjacent support plates (6, 7) and with the respectively adjacent inner wall of the housing, shafts (16, 17 and 26, 27, respectively) through which the cooling gas conveyed by blowers held on the housing (3) flows, controlled by reversing flaps (18, 19, 20, 21) arranged at the upper and lower ends of the air-guiding plates (14, 15).

Abstract: Two concentric and relatively displaceable cylinders mounted on the center axis of a vacuum furnace between its load chamber and its blower serve to control the gas flows in said furnace, where said gas flows are used to heat and cool the load portions.