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:
May. 24, 2016
Filed:
Oct. 18, 2011
Applicants:
Ikuo Yamauchi, Chiryu, JP;
Yuichi Furukawa, Toyota, JP;
Inventors:
Ikuo Yamauchi, Chiryu, JP;
Yuichi Furukawa, Toyota, JP;
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
B22C 3/00 (2006.01); C23C 22/74 (2006.01); B22D 17/22 (2006.01); C23C 26/00 (2006.01); C23C 22/62 (2006.01); C23C 22/68 (2006.01); C23C 22/82 (2006.01); C23C 8/04 (2006.01); C23C 8/32 (2006.01); B22C 9/06 (2006.01);
U.S. Cl.
CPC ...
C23C 22/74 (2013.01); B22C 9/061 (2013.01); B22D 17/22 (2013.01); C23C 8/04 (2013.01); C23C 8/32 (2013.01); C23C 22/62 (2013.01); C23C 22/68 (2013.01); C23C 22/82 (2013.01); C23C 26/00 (2013.01); B22C 3/00 (2013.01); B22C 9/06 (2013.01);
Abstract
A method for rust-proofing a mold, which is capable of reducing the time and the cost required for rust-proofing the mold. The method includes an iron hydroxide-forming step for forming iron hydroxide on a predetermined part of the surface of the mold, and a surface-treating step for forming a film covering the molding surface of the mold, and for changing the iron hydroxide formed on the mold into black rust, by heating the mold, under an oxygen-deficiency atmosphere, on which the iron hydroxide is formed in the iron hydroxide-forming step.