Thyssenkrupp Steel Europe Ag

Thyssen Krupp Ag

Evgeny Balichev

Harald Hofmann

Matthias Schirmer

Jian Bian

Matthias Dresler

Jenny Rudnizki

Jose Jimenez

Annette BÄUMER

Jonas Karl Moritz Schwabe

Markus Thomasky

A cold-rolled flat steel product for deep drawing applications including in addition to Fe and unavoidable impurities (in % by weight) C: 0.008%-0.1%, Al: 6.5%-12%, Nb: 0.1%-0.2%, Ti: 0.15-0.5%, P: &#x3c;0.1%, S: &#x3c;0.03%, N: &#x3c;0.1% and optionally one or more elements from the group of Mn, Si, REM, Mo, Cr, Zr, V, W, Co, Ni, B, Cu, Ca, N, where 2.5&#x2265;% Ti/% Nb&#x2265;1.5. Also a method of producing such a flat steel product including casting a pre-product, which is then hot-rolled into a hot strip with a hot rolling end temperature of 820-1000&#xb0; C. and wound at a winding temperature of up to 750&#xb0; C. After winding, the hot strip is annealed at an annealing temperature of &#x3e;650-1200&#xb0; C. for 1-50 h, then cold-rolled in one or more stages with a total cold rolling level of &#x2265;65% and finally annealed at 650-850&#xb0; C.

Cold-rolled flat steel product for deep drawing applications and method for production thereof

Improved casting powders and improved casting slags enable production of steels having high aluminum contents of greater than or equal to 1% by weight and, in some cases, high manganese content of greater than or equal to 15% by weight. In some examples, such steels may also or alternatively include greater than or equal to 0.2% by weight titanium. The casting slag may result from a casting powder that comprises CaO and AlOcomponents essentially in the form of prefused calcium aluminate. Methods for casting steel, including methods for continuously casting steel, are also disclosed based on the use of the disclosed casting powders or casting slags.

Casting powder, casting slag and method for casting steel

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Düsseldorf, Germany

Evgeny Balichev