Other

Toyota Jidosha Kabushiki Kaisha

Toyota School Foundation

Mitsubishi Denki Kabushiki Kaisha

Toyoda Gosei Co., Ltd.

Japan Science and Technology Corporation

Mec International Co., Ltd.

Tetra Co., Ltd

Yoshiki Tsunekawa

Masahiro Okumiya

Yuichi Furukawa

Naotake Mohri

Hiromitsu Takeuchi

Akihiro Goto

Takuji Magara

Hiroyuki Matsubara

Yoshihito Imai

Hidetaka Miyake

Nagao Saito

Fumio Kawahara

Yoshikazu Genma

Katsuhiro Takami

Eiji Tabata

Nao Kumemoto

Yutaka Kawai

Kohei Shimamoto

There is provided a nitrided layer repair method in which a molten metal is pressurized and solidified, and thus a nitrided layer formed on a cavity surface of a mold used to form a casting object is repaired. In the nitrided layer repair method, a nitriding source is applied to the cavity surface, and the cavity surface of the mold is nitrided by heating and pressurizing the cavity surface using the molten metal.

Nitrided layer repair method

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, COand 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.

Surface treatment method for metal material and mold treated by surface treatment method

During a process of cooling a hypereutectic Al&#x2014;Si alloy melt, ultrasonic vibration is applied to the melt to crystallize primary crystal &#x3b1;-Al using, in combination, an ultrasonic transducer () that generates the ultrasonic vibration, an ultrasonic horn () that is connected to the ultrasonic transducer () and transmits the ultrasonic vibration in a specified direction, a treatment vessel () that holds the melt and is in contact with the ultrasonic horn (), and a treatment vessel fixing device () that fixes the treatment vessel () by pressing the treatment vessel toward the ultrasonic horn ().

Microcrystalline alloy, method for production of the same, apparatus for production of the same, and method for production of casting of the same

A casting process for producing a metal matrix composite comprising a first phase or a matrix of a metal or metal alloy and a second phase of particles dispersed in the matrix, comprising the steps of: preparing a melt of the metal or metal alloy in a vessel; feeding the particles to the melt; applying ultrasonic vibration to the melt while electromagnetically stirring the melt; and then causing solidification of the melt. The process preferably further comprises the step of applying ultrasonic vibration to the melt while electromagnetically stirring the melt during the solidification of the melt.

Casting process for producing metal matrix composite

A method and apparatus for forming a layer of plating on a base material and a method for manufacturing a three dimensional object. The plating apparatus includes a nozzle for delivering a stream of plating fluid and an electric source for applying a voltage between the base material and the nozzle. The nozzle has an outer wall and a stem located at its center. The nozzle delivers plating fluid from the opening of the nozzle in an annular manner to produce a stream that has a substantially uniform flow velocity when the stream hits the base material. In an another embodiment, the nozzle has surrounding conduit for conducting air. The air increases the velocity of a peripheral portion of the stream. To manufacture a three dimensional object, a plating layer is deposited, and the nozzle is moved to form a desired shape while piling the layer.

Plating method and apparatus

A surface treating is performed by an electric discharge. The electric discharge is generated by applying a voltage between an electrode and a metal workpiece. The electrode is a solid or green compact electrode or the like which is made of a reforming material. The workpiece may be an end mill or the like. Then, a coating layer is formed on a surface of the metal workpiece. Thereafter, a nitriding treatment is performed on the coating layer in a nitriding vessel or the like. Thus, a hard coating layer of better quality is formed on the surface of the workpiece whether a material of the workpiece is steel or hard metal.

Electric discharge surface treating method and apparatus

A method of making a composite structure including at least a plating film disposed on a substrate having at least a surface portion formed from a metallic base material. The method includes the steps of discharging a composite plating solution containing insoluble particles from a nozzle and impacting the composite plating solution on the surface portion of the substrate at a predetermined flow rate. During at least a portion of the discharging and impacting steps, the surface portion of the substrate is abraded with the insoluble particles in the plating solution discharged from the nozzle. A voltage can be applied between the base material and the nozzle, which are electrically connected by the plating solution, to thereby deposit a plating film on the surface portion of the substrate by electroplating.

Plating method

A composite plating film is prepared from a composite plating solution containing a metal matrix and insoluble particles 4 dispersed therein or deposited therewith. The composite plating film has a non-uniform concentration of insoluble particles along a direction of the thickness of the composite film. The non-uniform concentration is achieved by changing the discharge rate of composite plating solution during deposition of the film on the base material.

Composite plating method

A method of manufacturing a composite material by melt-spraying, comprising the steps of melt-spraying a metal as the main constituent of the composite material onto a base plate and injecting a reinforcing substance comprising discontinuous fibers into the metal melt spray stream upstream of the base plate to effect mixing of the reinforcing substance in the melt-sprayed stream of metal within a temperature range without producing a resultant reaction layer between said metal and said reinforcing substance.

Growing community of inventors

Nagoya, Japan

Yoshiki Tsunekawa