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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 10294550 B1

PDFFull Text
Date of Patent:
May. 21, 2019

Filed:

Feb. 06, 2015

Heat resistant spheroidal graphite cast iron, method of manufacturing the same and engine exhaust system part including the same

Applicant:

Doosan Infracore Co., Ltd., Incheon, KR;

Inventors:

Young-Kyu Ju, Seoul, KR;

Ki-Hwan Jung, Gyeonggi-do, KR;

Jong-Kwon Chung, Gyeonggi-do, KR;

Sik Yang, Gyeonggi-do, KR;

Jae-Hyoung Hwang, Gyeonggi-do, KR;

Dong-Seob Shim, Gyeonggi-do, KR;

Sang-Beom Kim, Seoul, KR;

Assignee:

DOOSAN INFRACORE CO., LTD, Incheon, KR;

Attorney:

K&L Gates LLP

Primary Examiner:

Ngoc-Yen Nguyen

Int. Cl.
CPC ...
C22C 37/10 (2006.01); C22C 37/06 (2006.01); C22C 33/08 (2006.01); G01N 25/00 (2006.01); B22D 25/02 (2006.01); F01N 13/14 (2010.01); G01N 33/20 (2019.01); H01J 49/26 (2006.01); B22D 17/00 (2006.01); C22C 37/04 (2006.01); G01N 33/205 (2019.01); C22C 33/04 (2006.01); C21C 1/10 (2006.01); C21D 5/00 (2006.01);
U.S. Cl.
CPC ...
C22C 37/10 (2013.01); B22D 17/00 (2013.01); B22D 25/02 (2013.01); C21C 1/105 (2013.01); C22C 33/04 (2013.01); C22C 33/08 (2013.01); C22C 37/04 (2013.01); C22C 37/06 (2013.01); F01N 13/14 (2013.01); G01N 25/00 (2013.01); G01N 33/205 (2019.01); H01J 49/26 (2013.01); C21D 5/00 (2013.01); C21D 2211/004 (2013.01); C21D 2211/005 (2013.01); C21D 2211/009 (2013.01); F01N 2510/02 (2013.01);
Abstract

Heat resistant spheroidal graphite cast iron having an improved high temperature tensile strength includes carbon (C) in a range of 3.2-3.4 wt %, silicon (Si) in a range of 4.3-4.8 wt %, manganese (Mn) in a range of 0.2-0.3 wt %, molybdenum (Mo) in a range of 0.8-1.0 wt %, vanadium (V) in a range of 0.4-0.6 wt %, chrome (Cr) in a range of 0.2-0.4 wt %, niobium (Nb) in a range of 0.2-0.4 wt %, inevitable impurities, and a remainder of iron (Fe) based on a total weight of the heat resistant spheroidal graphite cast iron. The heat resistant spheroidal graphite cast iron further includes barium (Ba) in a range of 0.0045-0.0075 wt %. A content ratio of chrome (Cr) and barium (Ba) (Cr/Ba) is in a range from about 26 to about 89.

Find Patent Forward Citations

Ju, Young-Kyu. (2019). Heat resistant spheroidal graphite cast iron, method of manufacturing the same and engine exhaust system part including the same (U.S. Patent No. 10294550). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10294550

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