Benteler-automobiltechnik Gmbh

Salzgitter Flachstahl Gmbh

Alexander Redenius

Thomas Evertz

Manuel Otto

Zacharias Georgeou

Karsten Bake

Andreas Frehn

Peter Palzer

Uwe Diekmann

Hubertus Giefers

Michael Spiegel

The present invention, among other things, relates to a method for producing a workpiece by press hardening a semi-finished product, which is distinguished by the fact that the semi-finished product consists of a steel which has a high content of silicon of at least 0.9 wt. %, with a simultaneously small content of manganese of less than 0.9 wt. %, a small carbon content of less than 0.25 wt. %, and a high chromium content of more than 1.20 wt. %, and which by heating is brought to a state in which the structure of the steel that is used is at least partially transformed to austenite, also optionally fully transformed to austenite, and the thus-heated semi-finished product is hot shaped so that after the hot deformation shaping, a structure is present in the workpiece that has a complex phase structure with predominantly martensite and ferrite fractions. In addition, a workpiece is described, which is produced according to this method, as well as uses of such a workpiece.

Method for producing a workpiece and a workpiece

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Braunschweig, Germany

Alexander Redenius