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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 10858715 B1

PDFFull Text
Date of Patent:
Dec. 08, 2020

Filed:

Sep. 26, 2018

Dual hardness steel article

Applicant:

Ati Properties Llc, Albany, OR (US);

Inventors:

Njall Stefansson, Canonsburg, PA (US);

Ronald E. Bailey, Pittsburgh, PA (US);

Glenn J. Swiatek, Palos Heights, IL (US);

Assignee:

ATI PROPERTIES LLC, Albany, OR (US);

Attorneys:

Robert J. Toth

K&L Gates LLP

Primary Examiner:

Michael E La Villa

Int. Cl.
CPC ...
C21D 1/18 (2006.01); C21D 7/13 (2006.01); C21D 7/04 (2006.01); C21D 9/42 (2006.01); C21D 9/50 (2006.01); C21D 8/02 (2006.01); F41H 5/04 (2006.01); C22C 38/44 (2006.01); C22C 38/08 (2006.01); C22C 38/04 (2006.01); C22C 38/02 (2006.01); B21B 1/00 (2006.01); B21B 1/02 (2006.01); B21B 1/04 (2006.01); B21B 1/22 (2006.01); B21B 1/24 (2006.01); B21B 1/26 (2006.01); B21B 1/46 (2006.01); B21B 3/02 (2006.01); B21B 3/00 (2006.01); B32B 15/18 (2006.01); B32B 15/04 (2006.01); B32B 15/01 (2006.01); B23K 35/02 (2006.01); B23K 20/227 (2006.01); B23K 20/08 (2006.01); B23K 20/04 (2006.01); F41H 5/00 (2006.01); B23K 20/02 (2006.01); C22C 38/00 (2006.01); B23K 103/04 (2006.01);
U.S. Cl.
CPC ...
C21D 9/42 (2013.01); B21B 1/00 (2013.01); B21B 1/02 (2013.01); B21B 1/04 (2013.01); B21B 1/22 (2013.01); B21B 1/227 (2013.01); B21B 1/24 (2013.01); B21B 1/26 (2013.01); B21B 1/46 (2013.01); B21B 1/463 (2013.01); B21B 1/466 (2013.01); B21B 3/00 (2013.01); B21B 3/02 (2013.01); B23K 20/021 (2013.01); B23K 20/023 (2013.01); B23K 20/04 (2013.01); B23K 20/08 (2013.01); B23K 20/227 (2013.01); B23K 35/0255 (2013.01); B23K 35/0261 (2013.01); B32B 15/01 (2013.01); B32B 15/011 (2013.01); B32B 15/04 (2013.01); B32B 15/043 (2013.01); B32B 15/18 (2013.01); C21D 1/18 (2013.01); C21D 7/04 (2013.01); C21D 7/13 (2013.01); C21D 8/0226 (2013.01); C21D 9/50 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/08 (2013.01); C22C 38/44 (2013.01); F41H 5/00 (2013.01); F41H 5/04 (2013.01); F41H 5/045 (2013.01); F41H 5/0442 (2013.01); B21B 2001/028 (2013.01); B21B 2001/225 (2013.01); B23K 2103/04 (2018.08); B32B 2311/30 (2013.01); B32B 2571/02 (2013.01); C21D 2211/008 (2013.01); Y10T 428/12958 (2015.01); Y10T 428/12965 (2015.01); Y10T 428/12972 (2015.01); Y10T 428/12979 (2015.01); Y10T 428/26 (2015.01);
Abstract

A dual hardness steel article comprises a first air hardenable steel alloy having a first hardness metallurgically bonded to a second air hardenable steel alloy having a second hardness. A method of manufacturing a dual hard steel article comprises providing a first air hardenable steel alloy part comprising a first mating surface and having a first part hardness, and providing a second air hardenable steel alloy part comprising a second mating surface and having a second part hardness. The first air hardenable steel alloy part is metallurgically secured to the second air hardenable steel alloy part to form a metallurgically secured assembly, and the metallurgically secured assembly is hot rolled to provide a metallurgical bond between the first mating surface and the second mating surface.

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