Method for producing load-optimized steel strips
AssigneeThyssen Krupp Stahl AG
InventorsWilhelm Schmitz, Dieter Senk, Ulrich Albrecht-Früh, Reiner Kopp
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Abstract
To produce sheet steel components optimised for loading, a steel strip is cast between two cooled rolls with a variable nip and the thickness of the steel strip is changed by changing the time of contact between the strand shells and the rolls or by changing the cooling intensity of the rolls on the molten steel cast into the gusset formed by the rolls, thereby changing the thickness of the steel strip. Such a strip has a homogeneous structure and can subsequently be given a special quality by hot or cold rolling for its particular purpose of use.
Claims9
A process for producing steel strips optimized for loading and having a thickness continuously changing in the longitudinal direction of the strip comprising:
- casting a molten steel cast between two cooled rolls with a variable nip, wherein the two cooled rolls are subjected to a supporting force, so that a strand shell moves against another strand shell until they touch each other;
- cooling the molten steel cast by a cooling action of the two cooled rolls depending upon a travel of the molten steel cast into a gusset formed by the two cooled rolls;
- and
- producing the steel strips by changing the thickness of the molten steel cast so as to give the steel strips a length-related change in thickness of 10 to 40%.
Dependencies are inferred from the claim text.