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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 10196704 B1

PDFFull Text
Date of Patent:
Feb. 05, 2019

Filed:

Nov. 25, 2013

Steel for resistance to complex corrosion from hydrochloric acid and sulfuric acid, having excellent wear resistance and surface qualities

Applicant:

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

Inventors:

Jeong-Bong Yoon, Pohang-si, KR;

Byoung-Ho Lee, Pohang-si, KR;

Jong-Hwa Kim, Pohang-si, KR;

Assignee:

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

Attorney:

McDermott Will & Emery LLP

Primary Examiner:

Deborah Yee

Int. Cl.
CPC ...
C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/16 (2006.01); C22C 38/60 (2006.01); C22C 38/08 (2006.01); C21D 9/46 (2006.01); C21D 8/02 (2006.01); C22C 38/00 (2006.01); C21D 1/84 (2006.01); C21D 6/00 (2006.01); C22C 38/10 (2006.01);
U.S. Cl.
CPC ...
C21D 9/46 (2013.01); C21D 1/84 (2013.01); C21D 6/001 (2013.01); C21D 6/005 (2013.01); C21D 6/007 (2013.01); C21D 6/008 (2013.01); C21D 8/02 (2013.01); C21D 8/0205 (2013.01); C21D 8/0221 (2013.01); C21D 8/0226 (2013.01); C21D 8/0263 (2013.01); C22C 38/00 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/105 (2013.01); C22C 38/16 (2013.01); C22C 38/60 (2013.01); C21D 2211/004 (2013.01);
Abstract

There are provided a steel sheet for resistance to composite corrosion from sulfuric acid and hydrochloric acid, having excellent wear resistance and surface quality, and a method of manufacturing the same. The steel sheet having excellent surface qualities may be provided by improving resistance to erosion occurring due to coal cinders to increase a lifespan thereof and securing excellent resistance to composite corrosion from sulfuric acid and hydrochloric acid. Wear resistance may be significantly increased by adding P, and in order to solve a problem in that wear resistance is deteriorated due to the addition of P, a component system and a hot rolling process condition may be controlled, thereby forming a corrosion resistant layer having excellent corrosion resistance.

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