Thyssenkrupp Steel Europe Ag

Outokumpu Nirosta Gmbh

Thyssen Krupp Ag

Voestalpine Stahl Gmbh

Ekaterina Bocharova

Markus Zörnack

Thomas Heller

Axel Grüneklee

Andreas Pichler

Brigitte Hammer

Daniel Krizan

Roland Sebald

Günter Stich

Dorothea Mattissen

Seyed Amin Mousavi Rizi

Andreas Bongards

Silke Strauss

Thomas Nickels

Fabian Nowara

Markus ZÖRNACK

The invention relates to a method for producing a shaped sheet-metal part from a panel or a semifinished part made of a material consisting of steel with at least 60 wt. % Fe and a residual austenite content of at least 5%, in which the panel or the semifinished part is at least partially cooled to a temperature below &#x2212;20&#xb0; C. before the shaping and is shaped at a temperature below &#x2212;20&#xb0; C. in a forming tool. The object of providing a method for producing load-compliantly configured components, which on the one hand permits industrial-scale use of low-temperature forming and is configured particularly simply, is achieved by reducing the material temperature of the panel or semifinished part to below &#x2212;20&#xb0; C. is carried out in a thermally regulated cooling apparatus.

Method and device for producing shaped sheet metal parts at a low temperature

A multi-phase steel including in % wt. C: 0.14-0.25%, Mn: 1.7-2.5%, Si: 0.2-0.7%, Al: 0.5-1.5%, Cr: &#x3c;0.1%, Mo: &#x3c;0.05%, Nb: 0.02-0.06%, S: up to 0.01%, P: up to 0.02%, N: up to 0.01% and optionally at least one of Ti, B, and V according to the following stipulation: Ti: up to 0.1%, B: up to 0.002%, V: up to 0.15%, with the remainder iron and unavoidable impurities, wherein the microstructure has at least 10% vol. ferrite and at least 6% vol. residual austenite and the steel has a tensile strength Rof at least 950 MPa, a yield point Rof at least 500 MPa and an elongation at break Ameasured in the transverse direction of at least 15%. A method of producing the multi-phase steel.

Multi-phase steel, cold-rolled flat product produced from such a multi-phase steel and method for producing it

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Mülheim an der Ruhr, Germany

Ekaterina Bocharova