Voestalpine Stahl Gmbh

Voestalpine Metal Forming Gmbh

Leopold Stegfellner

Siegfried Kolnberger

Thomas Kurz

Reiner Kelsch

Andreas Sommer

Norbert Gstöttenbauer

Michael Haslmayr

Gunter Lengauer

Norbert Gstoettenbauer

Benedikt Tutewohl

A method for heating a blank or a preformed steel sheet component for hot forming and/or quench hardening purposes. In at least some regions, the heating is carried out to a temperature above AC3; the heating of the blank is embodied as a rapid heating and to this end, the blank is heated in a first zone at an average heating rate of &#x3e;25 K/s up to about 600&#xb0; C. and above this temperature, is heated at an average heating rate of &#x3e;10 K/s up to a maximum of the AC3 temperature and then is transferred to a second zone in which the blank that has been preheated in the first zone is heated in at least some regions to temperatures greater than AC3, in particular &#x3e;850&#xb0; C., with the heating rate in the second zone being &#x3e;10 K/s. The invention also relates to a device for carrying out the method.

Method for heating steel sheets and device for carrying out the method

A method and an apparatus for the non-contact support of a sensor and/or actuator device with respect to a substrate which reflects sound at least in regions has a moving suspension device, a sensor and/or actuator device which is mechanically connected to the suspension device, and a positioning device which is mechanically connected to the suspension device and which has at least one non-contact bearing for the non-contact support of the sensor and/or actuator device with respect to the substrate. The positioning device has at least one sonotrode for emitting an ultrasonic field which, between the sonotrode and the substrate, forms acoustic levitation waves for the non-contact support of the sensor and/or actuator device with respect to the substrate by a non-contact bearing which is designed as an ultrasonic bearing.

Method and apparatus for the non-contact support of a sensor and/or actuator device

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Wartberg ob der Aist, Austria

Leopold Stegfellner