Patents by Inventor Shinya Imano
Shinya Imano 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).
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Patent number: 11925987Abstract: A metal powder manufacturing device includes: an atomization tank; a crucible in which a molten metal is stored; a molten metal nozzle that allows the molten metal stored in the crucible to flow downward into the atomization tank; and a fluid spraying nozzle including a plurality of spraying holes that spray a fluid to an atomization tank side end part of the molten metal nozzle to pulverize a molten metal flow flowing downward from the molten metal nozzle. The molten metal nozzle includes a molten metal nozzle body and an orifice part having an inside diameter equal to or smaller than an inside diameter of the molten metal nozzle body, and a material of the orifice part is harder than a material of the molten metal nozzle body.Type: GrantFiled: February 8, 2019Date of Patent: March 12, 2024Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Takashi Shibayama, Shinya Imano, Shigenobu Eguchi
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Patent number: 11884995Abstract: There is provided a Co-based alloy material, having a chemical composition including: Al of 0.1 to 10 mass %; W of 3 to 45 mass %, the total content of Al and W being 50 mass % or less; O of 0.007 to 0.05 mass %; and the balance being Co and impurities, wherein in ? phase crystal grains as a matrix phase of the Co-based alloy material, segregation cells within an average size of 0.15 to 1.5 ?m are formed, wherein in the segregation cells, ?? phase grains within a size of 0.01 to 0.5 ?m including Co, Al and W are dispersively precipitated, and wherein on boundary regions of the segregation cells and grain boundaries of the ? phase crystal grains, ? phase grains within a size of 0.005 to 2 ?m including Co and W are dispersively precipitated.Type: GrantFiled: August 30, 2022Date of Patent: January 30, 2024Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Atsuo Ota, Shinya Imano
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Publication number: 20230278100Abstract: A control method of a metal powder manufacturing apparatus, the metal powder manufacturing apparatus including a crucible housed in a dissolving tank, a molten metal nozzle attached to a bottom surface of the crucible, a plurality of gas injecting nozzles arranged on a periphery of the molten metal nozzle within a spray tank, and an orifice portion disposed in an upstream portion of a flow passage in the molten metal nozzle, an inside diameter of the orifice portion being equal to or more than 0.Type: ApplicationFiled: January 24, 2023Publication date: September 7, 2023Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Takashi Shibayama, Shinya Imano
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Patent number: 11712739Abstract: A metal powder production apparatus capable of easily preventing an oxide in a molten metal from entering a liquid nozzle is provided. The metal powder apparatus includes a first crucible heating and melting a melting material to generate molten metal, a first heating device heating and melting the metal in the first crucible, a stopper opening and closing a first opening provided on the bottom surface of the first crucible, an introduction pipe having one end connected to the first opening of the first crucible and leading a molten metal in the first crucible to the outside of the first crucible, a second crucible receiving the molten metal flowing out of the introduction pipe, a second heating device heating the second crucible, and a liquid nozzle provided on the bottom surface of the second crucible.Type: GrantFiled: November 26, 2019Date of Patent: August 1, 2023Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Takashi Shibayama, Shigenobu Eguchi, Shinya Imano
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Publication number: 20230094413Abstract: The present invention relates to a Co-based alloy product including a polycrystal of a Co-based alloy, the Co-based alloy including: 0.001 mass %?C<0.100 mass %; 9.0 mass %?Cr<20.0 mass %; 2.0 mass %?Al<5.0 mass %; 13.0 mass %?W<20.0 mass %; and 39.0 mass %?Ni<55.0 mass %, with the balance being Co and unavoidable impurities, in which the Co-based alloy product comprises segregated cells formed inside a crystal grain of the polycrystal, the segregated cells have an average size of 1 ?m or larger and 100 ?m or smaller, and the segregated cells contain Al and Cr, and a method for producing the Co-based alloy product.Type: ApplicationFiled: September 27, 2022Publication date: March 30, 2023Inventors: Shigenobu EGUCHI, Shinya Imano, Atsuo Ota, Kenji Sugiyama, Yoshiki Kumagai
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Patent number: 11613795Abstract: There is provided a cobalt-based alloy product comprising: in mass %, 0.08-0.25% C; 0.1% or less B; 10-30% Cr; 5% or less Fe and 30% or less Ni, the total amount of Fe and Ni being 30% or less; W and/or Mo, the total amount of W and Mo being 5-12%; at least one of Ti, Zr, Hf, V, Nb and Ta, the total amount of Ti, Zr, Hf, V, Nb and Ta being 0.5-2%; 0.5% or less Si; 0.5% or less Mn; 0.003-0.04% N; and the balance being Co and impurities. The product is a polycrystalline body of matrix phase crystal grains. In the matrix phase crystal grains, post-segregation cells with an average size of 0.13-2 ?m are formed, wherein components constituting an MC type carbide phase comprising Ti, Zr, Hf, V, Nb and/or Ta are segregated along boundary regions of the post-segregation cells.Type: GrantFiled: March 7, 2019Date of Patent: March 28, 2023Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Yuting Wang, Shinya Imano, Shigenobu Eguchi
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Patent number: 11602789Abstract: A metal-powder producing apparatus includes a spray chamber, and a plurality of spray nozzles that liquid-spray a melted metal into the spray chamber. Each of the plurality of spray nozzles includes: a liquid nozzle that allows the melted metal to flow down into the spray chamber; and a gas-jet nozzle that has a plurality of gas-jet holes arranged around the liquid nozzle and causing a gas fluid to collide with the melted metal having flowed down from the liquid nozzle.Type: GrantFiled: December 7, 2018Date of Patent: March 14, 2023Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Takashi Shibayama, Shigenobu Eguchi, Yuting Wang, Shinya Imano
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Publication number: 20230070692Abstract: There is provided a Co-based alloy material, having a chemical composition including: Al of 0.1 to 10 mass %; W of 3 to 45 mass %, the total content of Al and W being 50 mass % or less; O of 0.007 to 0.05 mass %; and the balance being Co and impurities, wherein in ? phase crystal grains as a matrix phase of the Co-based alloy material, segregation cells within an average size of 0.15 to 1.5 ?m are formed, wherein in the segregation cells, ?? phase grains within a size of 0.01 to 0.5 ?m including Co, Al and W are dispersively precipitated, and wherein on boundary regions of the segregation cells and grain boundaries of the ? phase crystal grains, ? phase grains within a size of 0.005 to 2 ?m including Co and W are dispersively precipitated.Type: ApplicationFiled: August 30, 2022Publication date: March 9, 2023Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Atsuo Ota, Shinya Imano
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Patent number: 11566313Abstract: Provided is a method for manufacturing an Ni-based alloy member in which the equilibrium amount of ?? phase precipitation at 700° C. is from 30 to 70 volume %. The method includes the steps of preparing an Ni-based alloy powder having a predetermined chemical composition; forming a precursor body wherein an average grain diameter of the ? phase grains is 50 ?m or less, by using the Ni-based alloy powder; and heating the precursor body to a temperature at least the ?? phase solvus temperature and subsequently slow-cooling the heated precursor body from the temperature to a temperature at least 100° C. lower than the ?? phase solvus temperature at a cooling rate of 100° C./h or lower. There is obtained a softened body in that the ?? phase particles of at least 20 volume % precipitate between/among the ? phase grains having an average grain diameter of 50 ?m or less.Type: GrantFiled: August 8, 2018Date of Patent: January 31, 2023Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Atsuo Ota, Shinya Imano
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Patent number: 11499208Abstract: There is provided a cobalt-based alloy product comprising: in mass %, 0.08-0.25% C; 0.1% or less B; 10-30% Cr; 5% or less Fe and 30% or less Ni, the total amount of Fe and Ni being 30% or less; W and/or Mo, the total amount of W and Mo being 5-12%; 0.5% or less Si; 0.5% or less Mn; 0.003-0.04% N; 0.5 to 2 mass % of an M component being a transition metal other than W and Mo and having an atomic radius of more than 130 pm; and the balance being Co and impurities. The impurities include 0.5% or less Al and 0.04% or less O. The product is a polycrystalline body of matrix phase crystal grains. In the matrix phase crystal grains, segregation cells with an average size of 0.13-2 ?m are formed, in which the M component is segregated in boundary regions of the segregation cells.Type: GrantFiled: March 7, 2019Date of Patent: November 15, 2022Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yuting Wang, Shinya Imano, Shigenobu Eguchi
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Patent number: 11427893Abstract: A Co-based alloy heat exchanger comprises: in mass %, 0.08-0.25% C; 0.1% or less B; 10-30% Cr; 5% or less Fe and 30% or less Ni, the total amount of Fe and Ni being 30% or less; W and/or Mo, the total amount of W and Mo being 5-12%; Ti, Zr, Nb and Ta, the total amount of Ti, Zr, Nb and Ta being 0.5-2%; 0.5% or less Si; 0.5% or less Mn; 0.003-0.04% N; and the balance being Co and impurities. The impurities include 0.5% or less Al, and 0.04% or less O. The heat exchanger is a polycrystalline body of matrix crystal grains with an average size of 5-100 ?m. In the matrix crystal grains, segregation cells with an average size of 0.13-2 ?m are formed, wherein components constituting an MC type carbide comprising Ti, Zr, Nb and/or Ta are segregated in boundary regions of the segregation cells.Type: GrantFiled: March 7, 2019Date of Patent: August 30, 2022Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Yuting Wang, Shinya Imano
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Patent number: 11414728Abstract: There is provided a cobalt-based alloy product comprising: in mass %, 0.08-0.25% C; 0.1% or less B; 10-30% Cr; 5% or less Fe and 30% or less Ni, the total amount of Fe and Ni being 30% or less; W and/or Mo, the total amount of W and Mo being 5-12%; at least one of Ti, Zr, Hf, V, Nb and Ta, the total amount of Ti, Zr, Hf, V, Nb and Ta being 0.5-2%; 0.5% or less Si; 0.5% or less Mn; 0.003-0.04% N; and the balance being Co and impurities. The cobalt-based alloy product is a polycrystalline body of matrix phase crystal grains, wherein MC type carbide phase grains are dispersively precipitated in the matrix phase crystal grains at an average intergrain distance of 0.13 to 2 ?m and M23C6 type carbide phase grains are precipitated on grain boundaries of the matrix phase crystal grains.Type: GrantFiled: March 7, 2019Date of Patent: August 16, 2022Inventors: Yuting Wang, Shinya Imano, Shigenobu Eguchi
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Publication number: 20220241856Abstract: The metal powder production apparatus includes: a spray tank; and a plurality of spray nozzles each including a molten metal nozzle that lets molten metal flow down into the spray tank and a gas injection nozzle that injects gas from a plurality of injection holes to the molten metal flowing down from the molten metal nozzle. The sectional area A1 [mm2] of the spray tank has a value obtained by multiplying the number n (n is an integer equal to or greater than 2) of the spray nozzles by a predetermined area value c1.Type: ApplicationFiled: January 31, 2022Publication date: August 4, 2022Inventors: Takashi SHIBAYAMA, Shinya IMANO
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Patent number: 11401582Abstract: An objective of the invention is to provide a Ni-based forged alloy article based on a superhigh precipitation-strengthening Ni-based alloy material that has mechanical properties balanced at higher level than before, and a turbine high-temperature member formed of the forged alloy article. There is provided a Ni-based forged alloy article comprising crystal grains of the ? phase and precipitation particles of the ?? phase, and having a chemical composition enabling to precipitate a ?? phase in an amount of 50-70 volume % at 700° C. within a matrix of a ? phase. The ?? phase comprises: aging precipitation ?? phase particles precipitating within the ? phase grains; and eutectic reaction ?? phase particles precipitating between/among the ? phase grains. The eutectic reaction ?? phase particles comprise a higher content of Ni and Al than the aging precipitation ?? phase particles and have an average particle size of 2 to 40 ?m.Type: GrantFiled: November 17, 2017Date of Patent: August 2, 2022Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Takashi Shibayama, Shinya Imano
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Patent number: 11401597Abstract: This method for manufacturing a high-temperature component formed of a Ni-based alloy includes a step of subjecting a workpiece of the Ni-based alloy to hot die forging using predetermined dies to form a forge-molded article, the step including: a die/workpiece co-heating substep of heating the workpiece interposed between the dies to a forging temperature; and a hot forging substep of taking out the workpiece and the dies into a room temperature environment and immediately performing hot forging on the workpiece using a press machine. The predetermined dies are formed of another Ni-based superalloy comprising ? and ?? phases, and have features in that: a solvus temperature of the ?? phase is 1050-1250° C.; and the ?? phase precipitates at least 10 vol. % at 1050° C. and has two kinds of forms of intra-grain ?? phase precipitations within the ? phase grains and inter-grain ?? phase precipitations between/among the ? phase grains.Type: GrantFiled: April 25, 2021Date of Patent: August 2, 2022Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Atsuo Ota, Shinya Imano
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Publication number: 20220220583Abstract: A Co-based alloy structure includes: a matrix phase (? phase) having an fcc structure and containing mainly Co; and a precipitated phase (?? phase) that contains an intermetallic compound having an L12 fcc structure, such as Co3(Al,W) in terms of an atomic ratio, and that is dispersively precipitated in the matrix phase. The Co-based alloy structure is configured to include the ?? phase having a grain size of 10 nm to 1 ?m, and grains of the ?? phase uniformly disposed and precipitated, and to have a precipitation amount of 40 vol % to 85 vol %.Type: ApplicationFiled: December 2, 2020Publication date: July 14, 2022Applicant: Mitsubishi Heavy Industries, Ltd.Inventors: Atsuo OTA, Shinya IMANO
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Publication number: 20220220585Abstract: There is provided a cobalt-based alloy material comprising: in mass %, 0.08-0.25% C; 0.003-0.2% N, the total amount of C and N being 0.083-0.28%; 0.1% or less B; 10-30% Cr; 5% or less Fe and 30% or less Ni, the total amount of Fe and Ni being 30% or less; W and/or Mo, the total amount of W and Mo being 5-12%; Al and/or Si, at least one of Al and Si being more than 0.5% and 3% or less, and the total amount of Al and Si being more than 0.5% and 4% or less; 0.5% or less Mn; 0.5-4% of an M component being a transition metal other than W and Mo and having an atomic radius of more than 130 pm; and the balance being Co and impurities. There is also provided a product formed from the cobalt-based alloy material.Type: ApplicationFiled: September 4, 2020Publication date: July 14, 2022Applicant: Mitsubishi Heavy Industries, Ltd.Inventors: Yuting WANG, Shinya IMANO, Atsuo OTA
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Publication number: 20220220584Abstract: There is provided a cobalt-based alloy product comprising: Co, C, N, B, Cr, Fe, Ni, W, Mo, Al, Si, and/or Mn with predetermined contents, and 0.5-4 mass % of an M component. The M component is a transition metal other than W and Mo and having an atomic radius of more than 130 pm. The product is a polycrystalline body of matrix phase crystal grains in which segregation cells are formed. There are at least two kinds of regions of the segregation cells wherein: a first region has an average size of 0.13-1.3 ?m; a second region has an average size of 0.25-2 ?m; and the average size of the second region is 1.3 times or more larger than that of the first region.Type: ApplicationFiled: September 4, 2020Publication date: July 14, 2022Applicant: Mitsubishi Heavy Industries, Ltd.Inventors: Yuting WANG, Shinya IMANO
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Patent number: D982627Type: GrantFiled: February 10, 2021Date of Patent: April 4, 2023Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Takashi Shibayama, Shigenobu Eguchi, Shinya Imano
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Patent number: D982628Type: GrantFiled: February 10, 2021Date of Patent: April 4, 2023Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Takashi Shibayama, Shigenobu Eguchi, Shinya Imano