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:
Mar. 26, 2013
Filed:
Jun. 21, 2010
Michael Braun, Lehre, DE;
Uwe Eggers, Wolfenbüttel, DE;
Cord Schäffner, Hannover, DE;
Joachim Schöttler, Braunschweig, DE;
Friedrich Luther, Braunschweig, DE;
Stefan Mütze, Hannover, DE;
Manuel Otto, Magdeburg, DE;
Thorsten Reier, Lahstedt, DE;
Michael Braun, Lehre, DE;
Uwe Eggers, Wolfenbüttel, DE;
Cord Schäffner, Hannover, DE;
Joachim Schöttler, Braunschweig, DE;
Friedrich Luther, Braunschweig, DE;
Stefan Mütze, Hannover, DE;
Manuel Otto, Magdeburg, DE;
Thorsten Reier, Lahstedt, DE;
Salzgitter Flachstahl GmbH, Salzgitter, DE;
Abstract
A component of an air-hardenable steel composed of (contents in mass %): C<0.20; Al<0.08; Si<1.00; Mn 1.20 to <2.50; P<0.020; S<0.015; N<0.0150; Cr 0.30 to <1.5; Mo 0.10 to <0.80; Ti 0.010 to <0.050; V 0.03 to <0.20; B 0.0015 to <0.0060, with the remainder being iron including the usual elements present in steel, is produced by heating a hot- or cold-rolled steel sheet or steel tube section to a temperature of θ=800 to 1050° C. and then forming the sheet or tube into a component in a forming tool. After removal from the tool, the component is cooled down in air while the component still has a temperature above θ=200° C. and below 800° C. The component achieves the required mechanical properties during air-cooling.