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:
Feb. 15, 2005
Filed:
Feb. 24, 2000
Rudolf Kawalla, Bobritzsch, DE;
Hans Pircher, Mülheim, DE;
Thomas Heller, Duisburg, DE;
Bernhard Engl, Dortmund, DE;
Pino Tesè, Oberhausen, DE;
Rudolf Kawalla, Bobritzsch, DE;
Hans Pircher, Mülheim, DE;
Thomas Heller, Duisburg, DE;
Bernhard Engl, Dortmund, DE;
Pino Tesè, Oberhausen, DE;
Thyssen Krupp Stahl AG, Dusseldorf, DE;
Abstract
The invention relates to a method for producing hot strip which features good forming ability and increased strength. This is achieved in that a hot strip (W) which is produced in particular from continuous casting in the shape of reheated slabs or slabs obtained directly from the casting heat, from thin slabs or cast strip, based on a steel comprising (in mass %) C: 0.001-1.05%; Si: ≦1.5%; Mn: 0.05-3.5%; Al: ≦2.5%, if necessary further elements such as Cu, Ni, Mo, N, Ti, Nb, V, Zn, B, P, Cr, Ca and/or S, with the remainder being iron as well as the usual accompanying elements, is continuously finish rolled and subsequently continuously cooled, with cooling taking place in at least two subsequent cooling phases (t, t) of accelerated cooling, to a final temperature; with the first cooling phase (t) of accelerated cooling starting at the latest three seconds after the last pass of finish rolling; and with the hot strip (W) during the first cooling phase (t) of accelerated cooling being cooled at a cooling rate of at least 150° C./s.