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 9708703 B1

Date of Patent:

Jul. 18, 2017

Filed:

Dec. 27, 2012

High-manganese hot-rolled galvanized steel sheet and manufacturing method thereof

Applicant:

Posco, Pohang-si, Gyeongsangbuk-do, KR;

Inventors:

Sun-Ho Jeon, Gwangyang-si, KR;

Kwang-Geun Chin, Gwangyang-si, KR;

Assignee:

POSCO, Pohang-si, Gyeongsangbuk-Do, KR;

Attorney:

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Primary Examiner:

Daniel J Schleis

Int. Cl.

CPC ...

B32B 15/00 (2006.01); C23C 2/02 (2006.01); C23C 2/06 (2006.01); C22C 38/04 (2006.01); C22C 38/58 (2006.01); C23C 2/26 (2006.01); C23C 2/28 (2006.01); B32B 15/01 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/50 (2006.01); C22C 38/54 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2006.01); C22C 38/34 (2006.01);

U.S. Cl.

CPC ...

C23C 2/02 (2013.01); B32B 15/013 (2013.01); C21D 6/005 (2013.01); C21D 8/0205 (2013.01); C21D 8/0263 (2013.01); C21D 8/0284 (2013.01); C22C 38/00 (2013.01); C22C 38/008 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/50 (2013.01); C22C 38/54 (2013.01); C22C 38/58 (2013.01); C23C 2/06 (2013.01); C23C 2/26 (2013.01); C23C 2/28 (2013.01); C22C 38/34 (2013.01); Y10T 428/12799 (2015.01);

Abstract

A high-manganese hot-rolled galvanized steel sheet having no surface defects and improved galvanizing and alloying characteristics is manufactured by using a high-manganese hot-rolled steel sheet. Provided are the high-manganese hot-rolled galvanized steel sheet and a method of manufacturing the high-manganese hot-rolled galvanized steel sheet. The high-manganese hot-rolled galvanized steel sheet includes: a hot-rolled steel sheet including 5 wt % to 35 wt % manganese; and a zinc coating layer formed on the hot-rolled steel sheet, wherein an internal oxide layer is formed in an internal region of the hot-rolled steel sheet facing the zinc coating layer.

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