Ipsen Industries International Gesellschaft MIT Beschrankter Haftung

Ipsen International, Gmbh

Ipsen Industries International Gmbh

Wolfgang Peter

Bernd Edenhofer

Albert Fleiter

Jan-Willem Bouwman

A method and an apparatus for the thermal treatment of metallic workpieces with which gas quenching can be obtained that is low in distortion, even for workpieces with an undulating shape or workpieces that are projectingly stackable are provided. In accordance with the method, after being heated the workpieces are cooled in a quenching chamber with a quenching gas, whereby the quenching gas is intentionally caused to flow around the workpieces by means of guide channels that have a closed lateral surface and that enclose the workpieces along the direction of flow of the quenching gas. The apparatus comprises a quenching chamber in which the workpieces can be cooled with a quenching gas, and wherein guide channels are provided to ensure that the quenching gas flows around the workpieces, the guide channels having a closed lateral surface and enclosing the workpieces along the direction of flow of the quenching gas.

Method and apparatus for treatment of metallic workpieces

A holder means for the partial thermal treatment in an oven, especially a cuum chamber oven that provides compressed gas quenching, of tools or workpieces, especially drill bits, that have a working portion and a portion that is to be clamped. The workpieces, which are guided by a base plate that is provided with holes, rest upright upon a bottom plate. The base plate is provided with a radiation shield on that side that faces the oven chamber. The upper surface of the radiation shield has a high emission factor for thermal radiation, and the radiation shield is disposed directly on the base plate.

Holder means for the partial thermal treatment of workpieces

An oven for the partial heat treatment of tools, for example, twist drills, omprises a first section, which contains the heating chamber that is constantly at the desired operating temperature. A second section for the loading and unloading and the quenching is provided. Between the two sections there is arranged a transport device for the charges of tools. The oven may be in the form of a one-chamber or three-chamber vacuum oven. The oven provides a high heat transfer rate, because the heating chamber is constantly at the desired operating temperature and the heat transfer by heat radiation under vacuum is started immediately when the charge is at its final position inside the heating chamber.

Oven for partial heat treatment of tools

A furnace for the thermal treatment of charges of iron and steel components. A cylindrical, vertical heating chamber is disposed within a housing. A plurality of vertical heating elements are disposed in the heating chamber. To accelerate the heating-up of a charge that is disposed within the heating chamber, especially in the lower temperature range, the heating elements have a tubular construction and are provided at their bottom end with an outlet opening. Gas conveyed by a fan flows through the heating elements, at which time it is convectively heated, and thereafter passes into the interior of the heating chamber. In the higher temperature range, the heating elements transfer their heat to the charge as radiant heat, with the furnace then operating in a vacuum.

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Emmerich, Germany

Wolfgang Peter