Patents Assigned to MEC International Co., Ltd.
  • Publication number: 20190176221
    Abstract: A casting device in which refrigerant is pressure-fed to a cooling passage formed in a die, leakage of refrigerant in the die can be reliably detected in a short time without a significant modification applied to the conventional device. A casting device includes a pressure-feed device that pressure-feeds refrigerant to a cooling passage formed in a die, and a release agent coating applicator that applies a release agent to the die, and further includes a unit that mixes a fluorescent agent into the refrigerant (fluorescent agent tank), a unit that irradiates the die surface of the die with black light while the refrigerant containing the fluorescent agent mixed therein is pressure-fed to the die, and an imaging device that captures an image of the die surface. The imaging device is integrally assembled with the release agent coating applicator.
    Type: Application
    Filed: November 18, 2016
    Publication date: June 13, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, MEC International Co., Ltd., MEIWA e-TEC CO., LTD., NIKON CORPORATION
    Inventors: Daisuke SERINO, Fumio KAWAHARA, Yuzo MATSUDA, Tetsushi YAMAGUCHI, Hiroshi KAWAHARA, Sakayuki ISHIKAWA, Takuto TAKAHASHI, Naoshi SAKAGUCHI, Hiroyuki KAYABA, Takahiro MICHIMOTO
  • Publication number: 20180056363
    Abstract: Provided is a method for producing a heat sink that can easily and effectively form a heat radiating film on the surface of a substrate without requiring enormous heat energy for increasing the temperature of the substrate. The method is a method for producing a heat sink having a substrate and a heat radiating film formed on the surface of the substrate, including a first step of casting a substrate by injecting molten metal into a cavity of molding dies; and a second step of applying a heat radiating coating to the substrate through spraying or dropping in the period from when the molding dies are opened after the casting until when the temperature of the substrate that has been cast becomes lower than the deposition temperature that is a temperature necessary to deposit the heat radiating coating on the substrate.
    Type: Application
    Filed: August 23, 2017
    Publication date: March 1, 2018
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, MEC International Co., Ltd.
    Inventors: Naoaki SUGIURA, Yuichi FURUKAWA, Mitsuhiro KOBAYASHI, Fumio KAWAHARA, Katsuhiro TAKAMI
  • Patent number: 9644255
    Abstract: A surface treatment method for a metal material is provided which includes applying diluted sulfuric acid to a surface of the metal material that is composed primarily of iron, performing a heat treatment on the metal material in the presence of at least one of CO, CO2 and organic gas under nitriding conditions under which a nitrided layer is formed in a superficial layer of the metal material after the application of the diluted sulfuric acid to form a carbon film which includes at least one of carbon nanocoils, carbon nanotubes and carbon nanofilaments on a surface of the nitrided layer of the metal material.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: May 9, 2017
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOYOTA SCHOOL FOUNDATION, MEC INTERNATIONAL CO. LTD.
    Inventors: Yuichi Furukawa, Masahiro Okumiya, Yoshiki Tsunekawa, Nao Kumemoto, Fumio Kawahara, Katsuhiro Takami
  • Publication number: 20170015934
    Abstract: An oil-based release agent of the present invention contains a petroleum-based hydrocarbon solvent (a) and a high temperature adhesive (b), is applied to a metal die used for die casting or casting, has high adhesion and high lubricity even with respect to a metal die at a high temperature particularly of 300° C. or higher, and can prevent seizure. In addition, the present invention provides a method for applying the oil-based release agent of the present invention by controlling an adhesion amount thereof by micronization and speed-control thereof with respect to a metal die at a high temperature, and an electrostatic application method.
    Type: Application
    Filed: January 30, 2015
    Publication date: January 19, 2017
    Applicants: AOKI SCIENCE INSTITUTE CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, MEC INTERNATIONAL CO., LTD.
    Inventors: Hiroaki KOMATSUBARA, Masanao KOBAYASHI, Toshiaki SHIMIZU, Ikuo YAMAUCHI, Takashi MORIKAWA, Eiji TABATA, Fumio KAWAHARA, Yuzo MATSUDA
  • Publication number: 20140048182
    Abstract: A surface treatment method for a metal material is provided which includes applying diluted sulfuric acid to a surface of the metal material that is composed primarily of iron, performing a heat treatment on the metal material in the presence of at least one of CO, CO2 and organic gas under nitriding conditions under which a nitrided layer is formed in a superficial layer of the metal material after the application of the diluted sulfuric acid to form a carbon film which includes at least one of carbon nanocoils, carbon nanotubes and carbon nanofilaments on a surface of the nitrided layer of the metal material.
    Type: Application
    Filed: April 12, 2012
    Publication date: February 20, 2014
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, MEC INTERNATIONAL CO. LTD., TOYOTA SCHOOL FOUNDATION
    Inventors: Yuichi Furukawa, Masahiro Okumiya, Yoshiki Tsunekawa, Nao Kumemoto, Fumio Kawahara, Katsuhiro Takami
  • Patent number: 8413708
    Abstract: A surface treatment method includes covering a surface of a casting mold with a carbon film containing at least one type of nanocarbon selected from the group including carbon nanocoils, carbon nanotubes and carbon nanofilaments, and further applying fullerenes to that surface. With this surface treatment method being performed on a surface (a cavity surface, etc. of a casting mold) making contact with a molten casting material such as aluminum, etc., sticking of the molten casting material to the mold is inhibited, release resistance of the product is reduced, and release effectiveness is improved. The release effectiveness lasts longer than in the case of a conventional carbon film.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: April 9, 2013
    Assignees: Toyota Jidosha Kabushiki Kaisha, MEC International Co., Ltd.
    Inventors: Yuichi Furukawa, Fumio Kawahara, Hidenori Matsuoka, Hitoshi Kabasawa
  • Patent number: 8376023
    Abstract: A die-casting die is provided. The die-casting die may include a cavity forming surface. A part of the cavity forming surface may be coated with a surface treatment layer. The surface treatment layer may include a mixture of fibrous carbon and particle carbon and have a thermal conductivity that increases in connection to an increase in an acted pressure.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: February 19, 2013
    Assignees: Toyota Jidosha Kabushiki Kaisha, MEC International Co., Ltd.
    Inventors: Yuichi Furukawa, Fumio Kawahara, Yasushi Iwata, Hiroaki Iwahori, Jun Yaokawa, Atsuto Okamoto
  • Publication number: 20120288622
    Abstract: A surface treatment method includes covering a surface of a casting mold with a carbon film containing at least one type of nanocarbon selected from the group consisting of carbon nanocoils, carbon nanotubes and carbon nanofilaments, and further applying fullerenes to that surface. With this surface treatment method being performed on a surface (a cavity surface, etc. of a casting mold) making contact with a molten casting material such as aluminum, etc., sticking of the molten casting material to the mold is inhibited, release resistance of the product is reduced, and release effectiveness is improved. The release effectiveness lasts longer than in the case of a conventional carbon film.
    Type: Application
    Filed: July 19, 2012
    Publication date: November 15, 2012
    Applicants: MEC INTERNATIONAL CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuichi FURUKAWA, Fumio KAWAHARA, Hidenori MATSUOKA, Hitoshi KABASAWA
  • Patent number: 8256493
    Abstract: A surface treatment method includes covering a surface of a casting mold with a carbon film containing at least one type of nanocarbon selected from the group of carbon nanocoils, carbon nanotubes and carbon nanofilaments, and further applying fullerenes to that surface. With this surface treatment method being performed on a surface (a cavity surface, etc. of a casting mold) making contact with a molten casting material such as aluminum, etc., sticking of the molten casting material to the mold is inhibited, release resistance of the product is reduced, and release effectiveness is improved. The release effectiveness lasts longer than in the case of a conventional carbon film.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: September 4, 2012
    Assignees: Toyota Jidosha Kabushiki Kaisha, MEC International Co., Ltd.
    Inventors: Yuichi Furukawa, Fumio Kawahara, Hidenori Matsuoka, Hitoshi Kabasawa
  • Patent number: 8147961
    Abstract: A metal material that is, without using expensive apparatus, carburized in a low temperature region where crystal grains do not grow so much, and a producing method of the metal material are provided. A metal material mainly containing iron, wherein a surface of the metal material is subjected to a carburization treatment by a treatment using fullerenes as a carbon source.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: April 3, 2012
    Assignees: Toyota Jidosha Kabushiki Kaisha, MEC International Co., Ltd.
    Inventors: Kyosuke Yoshimi, Takeshi Matsuo, Mitsuo Suzuki, Takaaki Niinomi, Yuichi Furukawa, Setsuyu Hayakawa
  • Publication number: 20110223339
    Abstract: A method for a surface processing is provided. The method may include coating a surface of an object by a carbon coating including at least one type of a nano carbon selected from a carbon nano coil, a carbon nanotube and a carbon nano filament and applying liquid including fullerene to the carbon coating.
    Type: Application
    Filed: December 8, 2009
    Publication date: September 15, 2011
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, MEC INTERNATIONAL CO., LTD.
    Inventors: Yuichi Furukawa, Fumio Kawahara
  • Publication number: 20110209844
    Abstract: PROBLEMS A method for die-casting that fluidity of molten material is satisfactory and the molten material solidifies with suitable speed is realized. MEANS OF SOLVING THE PROBLEMS A die-casting die 12 comprises a cavity forming surface 9b. A part of the cavity forming surface 9b is coated with a surface treatment layer 24 having a thermal conductivity that increases in connection to an increase in an acted pressure. Satisfactory fluidity is kept at a cavity forming surface 8b coated with the surface treatment layer 24 until a filling of the molten material to the cavity 9 is completed. The molten material is cooled by the cavity forming surface 8b coated with the surface treatment layer 24 increasing the thermal conductivity after the filling of the molten material to the cavity 9 is completed.
    Type: Application
    Filed: October 16, 2009
    Publication date: September 1, 2011
    Applicants: Toyota Jidosha Kabushkiki Kasha, Mec International Co. Ltd
    Inventors: Yuichi Furukawa, Fumio Kawahara, Yasushi Iwata, Hiroaki Iwahori, Jun Yaokawa, Atsuto Okamoto
  • Publication number: 20110133053
    Abstract: A surface treatment method includes covering a surface of a casting mold with a carbon film containing at least one type of nanocarbon selected from the group of carbon nanocoils, carbon nanotubes and carbon nanofilaments, and further applying fullerenes to that surface. With this surface treatment method being performed on a surface (a cavity surface, etc. of a casting mold) making contact with a molten casting material such as aluminum, etc., sticking of the molten casting material to the mold is inhibited, release resistance of the product is reduced, and release effectiveness is improved. The release effectiveness lasts longer than in the case of a conventional carbon film.
    Type: Application
    Filed: July 30, 2009
    Publication date: June 9, 2011
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, MEC INTERNATIONAL CO., LTD.
    Inventors: Yuichi Furukawa, Fumio Kawahara, Hidenori Matsuoka, Hitoshi Kabasawa