Abstract: In a thermal or thermochemical treatment, metal workpieces together with a metal guide are arranged on a batch carrier. The present invention relates to a device for flow guidance for metallic pieces during such thermal or thermochemical treatment and quenching, as well as methods using the same. The fluid guide particularly ensures a uniform cooling of an inner and/or outer lateral surface of the workpieces during the quenching process.

Abstract: The invention relates to a device for water spray quenching that includes (i) a quenching chamber designed and set up to receive metallic workpieces, with a batch of volume V0 of 0.045 to 3.5 m3 and (ii) at least one atomizer which is configured to atomize water in air or nitrogen and is fluidically connected to the quenching chamber; in which the at least one atomizer and the device are designed and set up to generate a spray mist with a water content of 2.5 to 40 vol. % and a Sauter mean diameter of 20 to 2000 m and also a spray mist flow through the batch volume V0 of 0.05 to 25 m3/s.

Abstract: The present invention relates to devices used during the thermomechanical treatment of workpieces. During thermochemical treatment, metallic workpieces are mounted on and/or shielded by a high-temperature-resistant device configured specifically for this purpose in order to reduce dimensional and shape changes or warping. The inventive devices provide support and flow guiding for metallic workpieces during thermochemical treatment, and include a plate or a ring having a first and a second face, in which the second face is equipped with three or more support elements and the support elements are bound to a support plane.

Abstract: A process and apparatus for thermochemically hardening workpieces is provided incorporating the following steps, carried out in a variable sequence: one or more carburizing steps, each in a carbon-containing gas atmosphere at a pressure of less than 50 mbar, the workpieces being held at temperatures of 900 to 1050° C.; if appropriate, one or more diffusion steps, each in a gas atmosphere at a pressure of less than 100 mbar; and one or more nitriding steps, each in a nitrogen-containing discharge plasma at a pressure of less than 50 mbar, the workpieces being held at temperatures of 800 to 1050° C.

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: A process and apparatus for thermochemically hardening workpieces is provided incorporating the following steps, carried out in a variable sequence: one or more carburizing steps, each in a carbon-containing gas atmosphere at a pressure of less than 50 mbar, the workpieces being held at temperatures of 900 to 1050° C.; if appropriate, one or more diffusion steps, each in a gas atmosphere at a pressure of less than 100 mbar; and one or more nitriding steps, each in a nitrogen-containing discharge plasma at a pressure of less than 50 mbar, the workpieces being held at temperatures of 800 to 1050° C.

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).