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. 29, 2011
Filed:
Sep. 13, 2006
Applicants:
Ralf Bode, Moers, DE;
Beate Langenhan, Niederkrüchten, DE;
Inventors:
Ralf Bode, Moers, DE;
Beate Langenhan, Niederkrüchten, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21D 9/28 (2006.01); C21D 6/00 (2006.01); C21D 1/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for the production of steels is provided. A heat treatment is carried out, in which the steel is hardened in water twice at different high temperatures, and subsequently subjected to an annealing treatment. It has been shown that the steel 26NiCrMoV14-5 has a high subzero toughness. In one aspect, the steel is usable down to a temperature of at least minus 170° C.