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.:

US 9441281 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 13, 2016

Filed:

Jan. 15, 2008
Applicants:

Tero Taulavuori, Tornio, FI;

Antero Kyröläinen, Pattijoki, FI;

Terho Torvinen, Kokkola, FI;

Inventors:

Tero Taulavuori, Tornio, FI;

Antero Kyröläinen, Pattijoki, FI;

Terho Torvinen, Kokkola, FI;

Assignee:

OUTOKUMPU OYJ, Helsinki, FI;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21D 1/26 (2006.01); C21D 1/18 (2006.01); C21D 8/02 (2006.01); C21D 9/50 (2006.01); C21D 9/52 (2006.01); C22C 38/04 (2006.01); C22C 38/40 (2006.01);
U.S. Cl.
CPC ...
C21D 1/26 (2013.01); C21D 1/18 (2013.01); C21D 8/0205 (2013.01); C21D 9/50 (2013.01); C21D 9/52 (2013.01); C22C 38/04 (2013.01); C22C 38/40 (2013.01);
Abstract

The invention relates to a method for manufacturing a ductile, high strength austenitic stainless steel object from an austenitic stainless, steel strip, in which method the strip is cold worked in order to promote the formation of martensite into the microstructure of the strip, and the strip having a dual-phase microstructure is further processed. The strip is then shaped to a desired object having at least one curved or arcuate area and during the shaping of the object the different areas of the strip are deformed in different degrees. The desired object is further reversion annealed in order to reverse martensite back to the austenite form and a hardening effect is achieved in order to have an essentially fine grain microstructure for at least the curved or arcuate area of the object.


Find Patent Forward Citations

Taulavuori, Tero. (2016). Method for manufacturing an austenitic steel object (U.S. Patent No. 9441281). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9441281

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