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:
Nov. 17, 2020
Filed:
Jan. 24, 2018
Honda Motor Co., Ltd., Tokyo, JP;
Minoru Goto, Tochigi, JP;
Kenji Yuki, Tochigi, JP;
Satoshi Sakamoto, Tochigi, JP;
Takashi Fujita, Tochigi, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
Abstract
A casting mold and a production method thereof with which exfoliation of coating is controlled and liquidity of molten metal can be maintained are provided. This casting moldincludes a surface processing partin which a plurality of groove partsof a grid grooveformed in a surface of a molten metal contact part of a mold materialis coated with a carbon film. In this surface processing part, a width Wof the groove partsis 35 μm or narrower, skewness Ssk of three-dimensional surface roughness is in a range of −0.8 to −0.2, and indentation hardness of the carbon filmtested by a nanoindenter is 1000 N/mmor higher. With this arrangement, it is possible to optimize the surface processing partin such a manner that a penetration rate of the molten metal (aluminum) is controlled to be low and the coating (carbon film) is unlikely to exfoliate from the groove parts