Patents by Inventor Hiroshi SHIRATORI

Hiroshi SHIRATORI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210197281
    Abstract: A method for manufacturing an additively manufactured body, which can suppress the occurrence of defects in the additively manufactured body, comprising: an additive manufacturing step of shaping an additively manufactured body in a heating state; and a machining step of machining the additively manufactured body in a state in which the heating state is maintained. The additively manufactured body can be shaped by the additive manufacturing step and the machining step which are repeated a plurality of times. The heating state is maintained also in the additive manufacturing step and the machining step which are repeated a plurality of times.
    Type: Application
    Filed: November 29, 2019
    Publication date: July 1, 2021
    Inventors: Shuho KOSEKI, Yuta YAMADA, Hiroshi SHIRATORI, Kenichiro KUNITOMO
  • Publication number: 20210170480
    Abstract: The present disclosure provides a powder material that makes it possible to achieve higher flowability than before and to increase the crushing strength of particles. The powder material of the present disclosure has a dendritic structure 1. The dendritic structure 1 has a cemented carbide composition or a cermet composition.
    Type: Application
    Filed: November 27, 2018
    Publication date: June 10, 2021
    Applicant: HITACHI METALS, LTD.
    Inventors: Hirotsugu KAWANAKA, Hiroshi SHIRATORI, Shuho KOSEKI, Tadashi FURUYA, Gang HAN, Kiyomi NAKAMURA
  • Publication number: 20200299814
    Abstract: Provided is a cemented carbide composite material including cemented carbide and non-cemented carbide having better high-temperature strength than conventional materials and capable of suppressing breakage and peeling of the composite material. A cemented carbide composite material includes: a cemented carbide part including WC—Co-based cemented carbide; a substrate part including metal that contains at least one of Ni and Co that accounts for 50 mass % or more in total. This cemented carbide composite material has an intermediate layer between the cemented carbide composite material and the substrate part, the intermediate layer containing components of the cemented carbide part and components of the substrate part. The intermediate layer includes a part having a gamma phase fraction of 80% or more and having Vickers hardness less than 700 HV.
    Type: Application
    Filed: September 20, 2018
    Publication date: September 24, 2020
    Applicant: HITACHI METALS, LTD.
    Inventors: Hiroshi SHIRATORI, Hirotsugu KAWANAKA, Shuho KOSEKI, Tadashi FURUYA
  • Publication number: 20190226058
    Abstract: Provided are: an alloy member that is excellent in homogeneity of both the alloy composition and microstructure and excellent in shape controllability and includes a high entropy alloy having high mechanical properties and high corrosion resistance, a process for producing the same, and a product including the alloy member. In the present invention, the alloy member having a chemical composition comprising elements of Co, Cr, Fe, Ni, and Ti each in an amount within a range of 5 atomic % or more and 35 atomic % or less and Mo in an amount within a range of more than 0 atomic % and 8 atomic % or less, the reminder consisting of unavoidable impurities, wherein ultrafine grains having an average grain diameter of 100 nm or less are dispersed and precipitated in a parent phase crystal.
    Type: Application
    Filed: August 9, 2018
    Publication date: July 25, 2019
    Applicant: HITACHI METALS, LTD.
    Inventors: Tadashi FUJIEDA, Hiroshi SHIRATORI, Kousuke KUWABARA, Atsuhiko ONUMA
  • Publication number: 20190193195
    Abstract: The present invention is intended is to improve the corrosion resistance of an overlay used in a nuclear power plant, and to reduce dissolution of cobalt from an overlay. The corrosion and wear resistant overlay is formed along a surface of a base by laser lamination modeling, and is configured from a plurality of metal layers of a Co-base alloy. The thickness of carbide eutectics that precipitate in the metal layers is the largest in the metal layer closest to the base, and is gradually smaller in the metal layers farther away from the base. The intensity of the laser beam applied to form layers by laser lamination modeling is adjusted so that the carbide eutectics that precipitate in at least the outermost metal layer have a controlled size of 10 ?m or less.
    Type: Application
    Filed: December 21, 2018
    Publication date: June 27, 2019
    Inventors: Sei HIRANO, Yoshihisa KIYOTOKI, Hajime MIYATA, Hirotsugu KAWANAKA, Shinji MATSUSHITA, Hiroshi SHIRATORI