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OwnerSascha Sikora, Jörg Gorschlüter +1inventors
InventorsSascha Sikora, Jörg Gorschlüter, David Pieronek
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Methods for using a mold to partially harden semifinished products, which are comprised of hardenable steel and have at least partially an open-profile or closed-profile cross section, may involve a number of steps. For example, such methods may involve heating regions of a semifinished product above an AC1 temperature, positioning the semifinished producing in a mold, positioning an active mold cooling element adjacent to or in contact with the heated regions of the semifinished product, and cooling the regions of the semifinished product at a defined cooling rate so that a hardened microstructure in the cooled regions. These methods and corresponding devices provide low cost solutions that dispense with complete hardening of semifinished products and/or employing welded connections to provide various mechanical properties.
A method for partial hardening of a semifinished product in a mold, the semifinished product comprising hardenable steel and having at least partially an open-profile or a closed-profile cross-section with an edge desired to be hardened, the method comprising:
Dependencies are inferred from the claim text.