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:
Sep. 29, 2015
Filed:
Sep. 10, 2013
Applicants:
Bernd Linzer, Linz, AT;
Axel Rimnac, Linz, AT;
Inventors:
Bernd Linzer, Linz, AT;
Axel Rimnac, Linz, AT;
Assignee:
PRIMETALS TECHNOLOGIES AUSTRIA GMBH, Linz, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D 11/00 (2006.01); B21B 1/46 (2006.01); F16L 9/02 (2006.01); C22C 38/00 (2006.01);
U.S. Cl.
CPC ...
B22D 11/006 (2013.01); B22D 11/001 (2013.01); C22C 38/00 (2013.01); F16L 9/02 (2013.01); B21B 1/463 (2013.01); Y10T 428/12292 (2015.01);
Abstract
A method produces microalloyed tubular steel from a steel melt having a chemical composition of 0.04-0.05% C, 1.3-1.5% Mn, 0.035-0.05% Nb, 0.035-0.06% V, 0.2-0.4% Cr, 0.2-0.3% Si, >0.015% Al and <0.008% N in percent by weight, the remainder consisting of Fe and unavoidable impurities. The method includes roughening an uncut thin slab strand formed from the steel melt to form a rough strip, reheating the rough strip to produce a reheated rough strip, and finish-rolling the descaled rough strip in a first group of rolling stands and in a second group of the rolling stands.