Sumitomo Electric Industries, Limited

Sumitomo Electric Sintered Alloy, Ltd.

Toda Kogyo Corporation

Toyota Jidosha Kabushiki Kaisha

Denso Corporation

Naoto Igarashi

Haruhisa Toyoda

Toru Maeda

Kazuhiro Hirose

Takao Nishioka

Hirokazu Kugai

Kazuyuki Hayashi

Hiroko Morii

Seiji Ishitani

Tomoyuki Ueno

Asako Watanabe

Shinichi Hirono

Yoshiyuki Shimada

Ryoji Mizutani

Yasuhiro Endo

Hitoshi Oyama

Tomoyuki Ishimine

Tsuyoshi Akao

Koji Mimura

Toshihiro Sakamoto

Hiroaki Terai

Masayuki Tauchi

Kenji Nawachi

Hidehisa Hirato

Seiji c/o Toda Kogyo Corp Ishitani

Toru Sumitomo Electric Imdustries Ltd Maeda

Haruhisa Sumitomo Electric Industries Ltd Toyoda

A manufacturing facility of a sintered product according to one aspect of the present disclosure includes: a molding apparatus configured to press-mold raw material powder containing metal powder to fabricate powder compacts; a marking apparatus configured to mark a product ID including a serial number on each of the powder compacts; a batch processing apparatus configured to perform a predetermined batch process on intermediate materials which are the powder compacts or sintered articles of the powder compacts; a reader apparatus configured to read the product ID of each of the intermediate materials loaded in a batch case of the batch processing apparatus; and a server apparatus configured to communicate with the apparatuses. The server apparatus includes: a communication unit configured to receive a read value of the product ID from the reader apparatus; and a control unit configured to specify a load position of each of the intermediate materials in the batch case based on the received read value.

Manufacturing facility and manufacturing method of sintered product

A dust core included in an axial-gap rotary electric machine. The dust core includes a sector-shaped plate-like yoke portion, and a tooth portion integrated with the yoke portion and projecting from the yoke portion. Denoting one of surfaces of the yoke portion from which the tooth portion projects as a toothed surface, the toothed surface has a concave portion provided between a peripheral edge of the tooth portion and a peripheral edge of the yoke portion.

Dust core, stator core, and stator

Core for rotary electric machine

A carrier-type heat-treatment apparatus including a furnace main body that includes heaters and a mesh belt that transports an object to be heat-treated into the furnace main body includes a gas pipe arranged inside the furnace main body, the gas pipe being configured to inject a gas into the furnace main body, in which a low-temperature zone and a high-temperature zone are provided inside the furnace main body with the gas, the low-temperature zone being provided on an entrance side of the furnace main body, the high-temperature zone being provided on an exit side of the furnace main body and having a temperature higher than the low-temperature zone.

Carrier-type heat-treatment apparatus

A soft magnetic material includes a plurality of composite magnetic particles. Each of the plurality of composite magnetic particles has: a metal magnetic particle including iron; a lower film surrounding the surface of the metal magnetic particle and including a nonferrous metal; and an insulating upper film surrounding the surface of the lower film and including at least one of oxygen and carbon. The nonferrous metal has an affinity with the at least one of oxygen and carbon included in the upper film that is larger than such affinity of iron; or the nonferrous metal has a diffusion coefficient with respect to the at least one of oxygen and carbon included in the upper film that is smaller than such diffusion coefficient of iron. This configuration provides desirable magnetic properties.

Soft magnetic material, powder magnetic core and process for producing the same

A manufacturing method of a soft magnetic material has a step of preparing a metal magnetic particle containing iron as the main component, and a step of forming an insulating film surrounding the surface of the metal magnetic particle. The step of forming the insulating film includes a step of mixing and stirring the metal magnetic particle, aluminum alkoxide, silicon alkoxide, and phosphoric acid.

Manufacturing method of soft magnetic material and manufacturing method of dust core

A soft magnetic material is a soft magnetic material including a composite magnetic particle () having a metal magnetic particle () mainly composed of Fe and an insulating coating () covering metal magnetic particle (), and insulating coating () contains an iron phosphate compound and an aluminum phosphate compound. The atomic ratio of Fe contained in a contact surface of insulating coating () in contact with metal magnetic particle () is larger than the atomic ratio of Fe contained in the surface of insulating coating (). The atomic ratio of Al contained in the contact surface of insulating coating () in contact with metal magnetic particle () is smaller than the atomic ratio of Al contained in the surface of insulating coating (). Thus, iron loss can be reduced.

Soft magnetic material, powder magnetic core and method of manufacturing soft magnetic material

A soft magnetic material includes a plurality of composite magnetic particles including a metal magnetic particle and an insulating film surrounding a surface of the metal magnetic particle. The insulating film also contains a phosphate. The soft magnetic material further includes an aromatic polyetherketone resin and a metallic soap and/or an inorganic lubricant having a hexagonal crystal structure. The metallic soap and the inorganic lubricant are particles with an average particle size of not more than 2.0 &#x3bc;m.

Soft magnetic material and dust core

The soft magnetic material includes a plurality of composite magnetic particles having a metal magnetic particle and an insulating film surrounding the surface of the metal magnetic particle. The metal magnetic particle contains iron as the main component. The insulating film contains aluminum, silicon, phosphorus, and oxygen. The insulating film satisfies the relationship 0.4&#x2266;M/(M+M)&#x2266;0.9 and the relationship of 0.25&#x2266;(M+M)/M&#x2266;1.0 in the case that molar amount of aluminum contained in the insulating film is represented by M, the sum of the molar amount of aluminum contained in the insulating film and the molar amount of silicon contained in the insulating film is represented by (M+M), and the molar amount of phosphorus contained in the insulating film is represented by M.

Soft magnetic material comprising an insulating layer containing aluminum, silicon, phosphorous and oxygen; dust magnetic core; process for producing soft magnetic material; and process for producing dust magnetic core

A soft magnetic material, a dust core, a method for manufacturing the soft magnetic material, and a method for manufacturing the dust core that can improve DC bias characteristics are provided. A soft magnetic material includes a plurality of metal magnetic particleswhose coefficient of variation Cv (&#x3c3;/&#x3bc;), which is a ratio of a standard deviation (&#x3c3;) of a particle size of the metal magnetic particlesto an average particle size (&#x3bc;) thereof, is 0.40 or less and whose circularity Sf is 0.80 or more and 1 or less. The metal magnetic particlespreferably have an average particle size of 1 &#x3bc;m or more and 70 &#x3bc;m or less. The soft magnetic material preferably further includes an insulating coated film that surrounds a surface of each of the metal magnetic particles

Soft magnetic material, dust core, method for manufacturing soft magnetic material, and method for manufacturing dust core

A soft magnetic material includes: a plurality of composite magnetic particles formed from a metal magnetic particle and an insulative coating surrounding a surface of the metal magnetic particle and containing metallic salt phosphate and/or oxide; and a lubricant formed as fine particles added at a proportion of at least 0.001 percent by mass and no more than 0.1 percent by mass relative to the plurality of composite magnetic particles. With this structure, superior lubrication is provided during compacting and desired magnetic characteristics can be obtained after compacting.

Soft magnetic material and powder magnetic core

The object of the present invention is to provide a powder core and method for making the same that is equipped with insulative coating having superior heat resistance, with the coating making it possible to adequately restrict the flow of eddy currents between particles. The powder core is equipped with a plurality of compound magnetic particles bonded to each other. Each of said plurality of composite magnetic particles includes: a metal magnetic particle; an insulative lower layer coatingsurrounding a surfaceof said metal magnetic particle; an upper layer coatingsurrounding said lower layer coatingand containing silicon; and dispersed particlescontaining a metal oxide compound and disposed in said lower layer coatingand/or said upper layer coating. A mean particle diameter R of the dispersed particlesmeets the condition 10 nm&#x3c;R&#x2266;2 T, where the average thickness of the coating combining the lower layer coatingand the upper layer coatingis T.

Dust core with specific relationship between particle diameter and coating thickness, and method for producing same

A method of producing a soft magnetic material includes the steps of preparing soft magnetic powder containing a plurality of soft magnetic particles etching the soft magnetic powder to remove surfaces of the soft magnetic particles and, after the etching step, heat-treating the soft magnetic powder in a finely divided state at a temperature of not less than 400&#xb0; C. and not more than 900&#xb0; C. By this method configured as above, desired magnetic characteristics can be obtained.

Growing community of inventors

Itami, Japan

Naoto Igarashi