Honda Motor Co., Ltd.

Satoshi Sakamoto

Masayuki Yamaguchi

Minoru Goto

Kenji Yuki

Takashi Wakimoto

Masaki Shigekura

Hiroki Matsunaga

Yusuke Kawaguchi

Takashi Fujita

A liquid-mixing apparatus used in a liquid-mixing method comprises a plurality of supply valves provided to a cylinder. The supply valves make it possible to individually supply a plurality of types of liquids into a retention chamber. Each of the supply valves is configured so as to be switchable between an open state, in which the interior of a supply channel via which a liquid is supplied and the interior of the retention chamber intercommunicate, and a closed state, in which communication between the supply channel and the retention chamber is blocked. A piston moves in the direction in which the volume of the retention chamber increases while at least one of the supply valves is in the open state, whereby a liquid is drawn into the storage chamber.

Liquid-mixing apparatus and liquid-mixing method

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 &#x3bc;m or narrower, skewness Ssk of three-dimensional surface roughness is in a range of &#x2212;0.8 to &#x2212;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

Casting mold, and production method thereof

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Tochigi, Japan

Satoshi Sakamoto