IDiyas

For the Inventor, By the Inventor

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 9850554 B1

PDFFull Text
Date of Patent:
Dec. 26, 2017

Filed:

Mar. 15, 2013

Hot-press formed product and method for manufacturing same

Applicant:

Kobe Steel, Ltd., Kobe-shi, JP;

Inventors:

Junya Naitou, Kobe, JP;

Toshio Murakami, Kobe, JP;

Shushi Ikeda, Nagoya, JP;

Keisuke Okita, Kobe, JP;

Assignee:

Kobe Steel, Ltd., Kobe-shi, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Jenny Wu

Int. Cl.
CPC ...
C21D 8/02 (2006.01); C22C 38/28 (2006.01); C22C 38/06 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C21D 8/00 (2006.01); C22C 38/32 (2006.01); C21D 1/673 (2006.01); C21D 1/18 (2006.01); B21D 22/20 (2006.01); B62D 29/00 (2006.01);
U.S. Cl.
CPC ...
C21D 8/0247 (2013.01); C21D 1/673 (2013.01); C21D 8/005 (2013.01); C21D 8/0221 (2013.01); C22C 38/001 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); B21D 22/208 (2013.01); B62D 29/007 (2013.01); C21D 1/18 (2013.01); C21D 2211/001 (2013.01); C21D 2211/002 (2013.01); C21D 2211/008 (2013.01); C21D 2221/00 (2013.01);
Abstract

A hot-press formed product can be achieved which has regions corresponding to a shock resistant portion and an energy absorption portion within a single formed product without applying a welding method and achieves the balance of high strength and elongation with a high level according to each region by means of having a first forming region exhibiting a metal structure containing martensite: 80-97 area % and retained austenite: 3-20 area % respectively, the remaining structure being 5 area % or less, and a second forming region exhibiting a metal structure containing annealed martensite or annealed bainite: 30-97 area %, martensite as quenched: 0-67 area %, and retained austenite: 3-20 area %.

Find Patent Forward Citations

Loading…