The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 2020
Filed:
Dec. 22, 2011
Harald Schwinghammer, Pasching, AT;
Andreas Sommer, Crailsheim, DE;
Siegfried Kolnberger, Pasching, AT;
Martin Rosner, Oed-Öhling, AT;
Thomas Kurz, Linz, AT;
Harald Schwinghammer, Pasching, AT;
Andreas Sommer, Crailsheim, DE;
Siegfried Kolnberger, Pasching, AT;
Martin Rosner, Oed-Öhling, AT;
Thomas Kurz, Linz, AT;
voestalpine Stahl GmbH, Linz, AT;
Abstract
The invention relates to a method for producing a hardened, steel component with regions of different hardness and/or ductility; a blank is stamped out and either heated in some regions to a temperature ≥Ac, and then transferred to a forming die, is formed, and is cooled at a speed that is greater than the critical hardening speed and thus hardened or is cold formed into the finished shape and the formed blank is heated in some regions to a temperature >Acand then transferred to a hardening die and is hardened at a speed greater than the critical hardening speed; the steel material is adjusted in a transformation-delaying fashion so that a quench hardening through transformation of austenite into martensite takes place at a forming temperature that lies in the range from 450° C. to 700° C.; after the heating and before the forming, an active cooling takes place at >15 K/s.