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.:
Date of Patent:
Jan. 31, 2017
Filed:
Oct. 05, 2012
Applicant:
Akebono Brake Industry Co., Ltd., Tokyo, JP;
Inventors:
Takao Horiya, Tokyo, JP;
Tsukasa Baba, Tokyo, JP;
Takuya Tokiyama, Tokyo, JP;
Takashi Sato, Tokyo, JP;
Hiroshi Idei, Tokyo, JP;
Assignee:
AKEBONO BRAKE INDUSTRY CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 33/08 (2006.01); C22C 33/10 (2006.01); C22C 37/04 (2006.01); C22C 37/10 (2006.01); C21C 7/00 (2006.01); C21C 1/10 (2006.01); C21D 5/00 (2006.01); B22D 1/00 (2006.01); B22D 27/00 (2006.01); B22D 27/20 (2006.01); C22C 28/00 (2006.01);
U.S. Cl.
CPC ...
C21C 7/0006 (2013.01); B22D 1/00 (2013.01); B22D 27/00 (2013.01); B22D 27/20 (2013.01); C21C 1/105 (2013.01); C21D 5/00 (2013.01); C22C 28/00 (2013.01); C22C 33/08 (2013.01); C22C 33/10 (2013.01); C22C 37/04 (2013.01); C22C 37/10 (2013.01); C21C 2300/08 (2013.01);
Abstract
A method for producing spheroidal graphite cast iron having a specific final composition includes: subjecting a molten iron to a spheroidization treatment using a spheroidizing agent of an Fe—Si—Mg—Ca-based alloy containing no rare earth element; conducting an inoculation treatment using a first Fe—Si-based inoculant; and conducting a pouring inoculation treatment with a given amount of a second Fe—Si-based inoculant containing 45-75% of Si, 1-3% of Ca, and 15 ppm or less of Ba.