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:
Nov. 14, 2023
Filed:
Dec. 14, 2021
Applicant:
Benteler Steel/tube Gmbh, Paderborn, DE;
Inventors:
Jayaram Dadda, Paderborn, DE;
Leonhard Rose, Paderborn, DE;
Matthias Ritter, Paderborn, DE;
Farzad Foadian, Paderborn, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 9/08 (2006.01); C22C 38/50 (2006.01); C22C 38/46 (2006.01); C22C 38/44 (2006.01); C22C 38/48 (2006.01); C22C 38/06 (2006.01); C22C 38/04 (2006.01); C22C 38/02 (2006.01); C21D 6/00 (2006.01); C21D 1/42 (2006.01); C21D 1/18 (2006.01); C21D 1/30 (2006.01);
U.S. Cl.
CPC ...
C21D 9/085 (2013.01); C21D 1/18 (2013.01); C21D 1/42 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C21D 1/30 (2013.01); C21D 2211/008 (2013.01);
Abstract
The present invention relates to a high strength steel tube. In addition, the invention relates to a method of manufacturing a high strength steel tube. The method is characterized in that a hot rolled pre-tube is subjected to at least two hardening steps with a final tempering step, the pre-tube is heated to a quenching temperature of at least Ac3 temperature for hardening and is heated to a tempering temperature in the range of 400 to 600° C. for tempering.