Patents by Inventor Natsuki Ichimiya
Natsuki Ichimiya 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: 10751806Abstract: Provided is a surface-coated cutting tool including: a cutting tool body and a hard coating layer on a surface of the cutting tool body, wherein the hard coating layer includes a complex nitride layer of Al, Cr, Si, and Cu, the complex nitride layer of Al, Cr, Si, and Cu includes a main phase, and CrSi-rich particles and Al-rich particles that are dispersed in the main phase, the main phase satisfies 0.15???0.40, 0.05???0.20, 0.005???0.05, and 0.45?x?0.60, the CrSi-rich particles satisfy 0.20???0.55, 0.20???0.55, 0???0.10, and 0.02?x?0.35, the Al-rich particles satisfy 0.10???0.25, 0.05???0.25, 0???0.10, and 0.02?x?0.35 in a composition formula: (Al1-?-?-?Cr?Si?Cu?)1-xNx), and an occupancy area ratio of the CrSi-rich particles having a major axis of 100 nm or more is 0.20 to 2.0 area %; and an occupancy area ratio of the Al-rich particles having a major axis of 100 nm or more is 0.50 to 3.0 area %.Type: GrantFiled: March 10, 2017Date of Patent: August 25, 2020Assignee: MITSUBISHI MATERIALS CORPORATIONInventors: Tsuyoshi Ogami, Tatsuo Hashimoto, Natsuki Ichimiya
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Patent number: 10751804Abstract: At least a (Al1-a-b-cCraSibCuc)N (where 0.15?a?0.40, 0.05?b?0.20, and 0.005?c?0.05) layer is provided on a surface of a tool body, a Cr concentration or a Cu concentration periodically changes in a layer thickness direction, a concentration Crmax in a highest content point of Cr is in a range of a<Crmax?1.3a, a concentration Crmin in a lowest content point of Cr is in a range of 0.50a?Crmin<a, and optionally in a case where a Cu composition at one point z along the layer thickness direction is represented by cz and a Cr composition at the point z is represented by az, (cz/az)/(c/a) is 0.7 to 1.5 over the layer thickness direction entirely.Type: GrantFiled: February 28, 2017Date of Patent: August 25, 2020Assignee: MITSUBISHI MATERIALS CORPORATIONInventors: Shun Sato, Tsuyoshi Ogami, Koichi Tanaka, Tatsuo Hashimoto, Natsuki Ichimiya
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Patent number: 10618114Abstract: A surface-coated cutting tool includes: a tool body made of any one of tungsten carbide-based cemented carbide, TiCN-based cermet, a cubic boron nitride sintered material, and high-speed tool steel; and a hard coating layer provided on a surface of the tool body. The hard coating layer includes at least a complex nitride layer of Al, Cr, Si, and Cu with an average layer thickness of 0.5 to 8.0 ?m. The complex nitride layer of (Al1-a-b-cCraSibCuc)N satisfies 0.15?a?0.40, 0.05?b?0.20, and 0.005?c?0.05 (here, each of a, b, and c is in atomic ratio). The complex nitride layer has a hexagonal crystal structure. A half width of a diffraction peak of a (110) plane present in a range of 2?=55° to 65° by performing X-ray diffraction on the complex nitride layer is 1.0° to 3.5°.Type: GrantFiled: October 27, 2016Date of Patent: April 14, 2020Assignee: MITSUBISHI MATERIALS CORPORATIONInventors: Tsuyoshi Ogami, Tatsuo Hashimoto, Natsuki Ichimiya
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Patent number: 10618113Abstract: A surface-coated cutting tool includes a tool body and a hard coating layer including a lower layer and an upper layer. The lower layer is made of a complex nitride layer of Al, Ti, and Si with the thickness of 0.3 to 3.0 ?m. It satisfies 0.3???0.5 and 0.01???0.10 (atomic ratio) being expressed by (Al1-?-?Ti?Si?)N. The upper layer is made of a complex nitride layer of Al, Cr, Si, and Cu with the thickness of 0.5 to 5.0 ?m. It satisfies 0.15?a?0.40, 0.05?b?0.20, and 0.005?c?0.05 (atomic ratio) being expressed by (Al1-a-b-cCraSibCuc)N. The upper layer is made of crystals having a hexagonal structure, and a half width of a diffraction peak of a (110) plane present in a range of 2?=55° to 65° is 1.0° to 3.5°.Type: GrantFiled: October 27, 2016Date of Patent: April 14, 2020Assignee: MITSUBISHI MATERIALS CORPORATIONInventors: Tsuyoshi Ogami, Tatsuo Hashimoto, Natsuki Ichimiya
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Publication number: 20190070668Abstract: At least a (Al1-a-b-cCraSibCuc)N (where 0.15?a?0.40, 0.05?b?0.20, and 0.005?c?0.05) layer is provided on a surface of a tool body, a Cr concentration or a Cu concentration periodically changes in a layer thickness direction, a concentration Crmax in a highest content point of Cr is in a range of a<Crmax?1.3a, a concentration Crmin in a lowest content point of Cr is in a range of 0.50a?Crmin<a, and optionally in a case where a Cu composition at one point z along the layer thickness direction is represented by cz and a Cr composition at the point z is represented by az, (cz/az)/(c/a) is 0.7 to 1.5 over the layer thickness direction entirely.Type: ApplicationFiled: February 28, 2017Publication date: March 7, 2019Applicant: MITSUBISHI MATERIALS CORPORATIONInventors: Shun SATO, Tsuyoshi OGAMI, Koichi TANAKA, Tatsuo HASHIMOTO, Natsuki ICHIMIYA
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Publication number: 20190039147Abstract: Provided is a surface-coated cutting tool including: a cutting tool body and a hard coating layer on a surface of the cutting tool body, wherein the hard coating layer includes a complex nitride layer of Al, Cr, Si, and Cu, the complex nitride layer of Al, Cr, Si, and Cu includes a main phase, and CrSi-rich particles and Al-rich particles that are dispersed in the main phase, the main phase satisfies 0.15???0.40, 0.05???0.20, 0.005???0.05, and 0.45?x?0.60, the CrSi-rich particles satisfy 0.20???0.55, 0.20???0.55, 0???0.10, and 0.02?x?0.35, the Al-rich particles satisfy 0.10???0.25, 0.05???0.25, 0???0.10, and 0.02?x?0.35 in a composition formula: (Al1-?-?-?Cr?Si?Cu?)1-xNx), and an occupancy area ratio of the CrSi-rich particles having a major axis of 100 nm or more is 0.20 to 2.0 area %; and an occupancy area ratio of the Al-rich particles having a major axis of 100 nm or more is 0.50 to 3.0 area %.Type: ApplicationFiled: March 10, 2017Publication date: February 7, 2019Applicant: MITSUBISHI MATERIALS CORPORATIONInventors: Tsuyoshi OGAMI, Tatsuo HASHIMOTO, Natsuki ICHIMIYA
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Publication number: 20180326501Abstract: A surface-coated cutting tool includes a tool body and a hard coating layer including a lower layer and an upper layer. The lower layer is made of a complex nitride layer of Al, Ti, and Si with the thickness of 0.3 to 3.0 ?m. It satisfies 0.3???0.5 and 0.01???0.10 (atomic ratio) being expressed by (Al1-?-?Ti?Si?)N. The upper layer is made of a complex nitride layer of Al, Cr, Si, and Cu with the thickness of 0.5 to 5.0 ?m. It satisfies 0.15?a?0.40, 0.05?b?0.20, and 0.005?c?0.05 (atomic ratio) being expressed by (Al1-a-b-cCraSibCuc)N. The upper layer is made of crystals having a hexagonal structure, and a half width of a diffraction peak of a (110) plane present in a range of 2?=55° to 65° is 1.0° to 3.5°.Type: ApplicationFiled: October 27, 2016Publication date: November 15, 2018Applicant: MITSUBISHI MATERIALS CORPORATIONInventors: Tsuyoshi OGAMI, Tatsuo HASHIMOTO, Natsuki ICHIMIYA
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Publication number: 20180311743Abstract: A surface-coated cutting tool includes: a tool body made of any one of tungsten carbide-based cemented carbide, TiCN-based cermet, a cubic boron nitride sintered material, and high-speed tool steel; and a hard coating layer provided on a surface of the tool body. The hard coating layer includes at least a complex nitride layer of Al, Cr, Si, and Cu with an average layer thickness of 0.5 to 8.0 ?m. The complex nitride layer of (Al1-a-b-cCraSibCuc)N satisfies 0.15?a?0.40, 0.05?b?0.20, and 0.005?c?0.05 (here, each of a, b, and c is in atomic ratio). The complex nitride layer has a hexagonal crystal structure. A half width of a diffraction peak of a (110) plane present in a range of 2?=55° to 65° by performing X-ray diffraction on the complex nitride layer is 1.0° to 3.5°.Type: ApplicationFiled: October 27, 2016Publication date: November 1, 2018Applicant: MITSUBISHI MATERIALS CORPORATIONInventors: Tsuyoshi OGAMI, Tatsuo HASHIMOTO, Natsuki ICHIMIYA
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Patent number: 8354177Abstract: This invention provides a surface-coated cutting tool which exhibits excellent fracture resistance and wear resistance in high-speed cutting, such as high-speed gear cutting, high-speed milling, and high-speed drilling. The surface-coated cutting tool includes a hard coating layer composed of an alternately laminated layer structure of at least a thin layer A and a thin layer B formed on the surface of a tool substrate, such as a cemented carbide substrate, a cermet substrate, and a high-speed tool steel substrate. The thin layer A is an (Al, Cr, Si)N layer which satisfies a compositional formula: [AlXCrYSiZ]N (0.2?X?0.45, 0.4?Y?0.75, 0.01?Z?0.2, and X+Y+Z=1 in terms of atomic ratio). The thin layer B is an (Al, Ti, Si)N layer which satisfies a compositional formula: [AlUTiVSiW]N (0.05?U?0.75, 0.15?V?0.94, 0.01?W?0.1, and U+V+W=1 in terms of atomic ratio).Type: GrantFiled: August 1, 2008Date of Patent: January 15, 2013Assignee: Mitsubishi Materials CorporationInventors: Koichi Maeda, Masanori Morikawa, Yuki Matsuoka, Natsuki Ichimiya
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Publication number: 20110183131Abstract: This invention provides a surface-coated cutting tool which exhibits excellent fracture resistance and wear resistance in high-speed cutting, such as high-speed gear cutting, high-speed milling, and high-speed drilling. The surface-coated cutting tool includes a hard coating layer composed of an alternately laminated layer structure of at least a thin layer A and a thin layer B formed on the surface of a tool substrate, such as a cemented carbide substrate, a cermet substrate, and a high-speed tool steel substrate. The thin layer A is an (Al, Cr, Si)N layer which satisfies a compositional formula: [AlXCrYSiX]N (0.2?X?0.45, 0.4?Y?0.75, 0.01?Z?0.2, and X+Y+Z=1 in terms of atomic ratio). The thin layer B is an (Al, Ti, Si)N layer which satisfies a compositional formula: [AlUTiVSiW]N (0.05?U?0.75, 0.15?V?0.94, 0.01?W?0.1, and U+V+W=1 in terms of atomic ratio).Type: ApplicationFiled: August 1, 2008Publication date: July 28, 2011Applicant: Mitsubishi Materials CorporationInventors: Koichi Maeda, Masanori Morikawa, Yuki Matsuoka, Natsuki Ichimiya
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Patent number: 7074285Abstract: The invention provides a high-speed tool steel gear cutting tool in which fracture or chipping does not occur at the cutting edge, and which realizes excellent cutting performance over long periods. Moreover, a method of manufacturing a gear cutting tool including: a step for quenching a tool material comprising high-speed tool steel and which has been rough processed to a shape corresponding to a final shape of a gear cutting tool, to transform a structure of the tool material into martensite, a step for temperling the tool material after quenching to transform any residual austenite dispersingly distributed throughout a matrix of the martensite structure formed by the quenching, into martensite, and a step for finishing the tool material after tempering to a final shape, is characterized in that the tool material after quenching is subjected to sub-zero treatment involving cooling and holding at a temperature of less than ?150 ° C.Type: GrantFiled: June 11, 2003Date of Patent: July 11, 2006Assignee: Mitsubishi Materials Kobe Tools CorporationInventors: Yasuyuki Yamada, Natsuki Ichimiya, Koichi Maeda, Yusuke Tanaka, Kazuaki Tanaka
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Patent number: 6811581Abstract: The invention provides a high-speed tool steel gear cutting tool in which fracture or chipping does not occur at the cutting edge, and which realizes excellent cutting performance over long periods. Moreover, a method of manufacturing a gear cutting tool including: a step for quenching a tool material comprising high-speed tool steel and which has been rough processed to a shape corresponding to a final shape of a gear cutting tool, to transform a structure of the tool material into martensite, a step for temperling the tool material after quenching to transform any residual austenite dispersingly distributed throughout a matrix of the martensite structure formed by the quenching, into martensite, and a step for finishing the tool material after tempering to a final shape, is characterized in that the tool material after quenching is subjected to sub-zero treatment involving cooling and holding at a temperature of less than −150° C.Type: GrantFiled: October 31, 2001Date of Patent: November 2, 2004Assignee: Mitsubishi Materials Kobe Tools CorporationInventors: Yasuyuki Yamada, Natsuki Ichimiya, Koichi Maeda, Yusuke Tanaka, Kazuaki Tanaka
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Publication number: 20030205304Abstract: The invention provides a high-speed tool steel gear cutting tool in which fracture or chipping does not occur at the cutting edge, and which realizes excellent cutting performance over long periods. Moreover, a method of manufacturing a gear cutting tool including: a step for quenching a tool material comprising high-speed tool steel and which has been rough processed to a shape corresponding to a final shape of a gear cutting tool, to transform a structure of the tool material into martensite, a step for temperling the tool material after quenching to transform any residual austenite dispersingly distributed throughout a matrix of the martensite structure formed by the quenching, into martensite, and a step for finishing the tool material after tempering to a final shape, is characterized in that the tool material after quenching is subjected to sub-zero treatment involving cooling and holding at a temperature of less than −150 ° C.Type: ApplicationFiled: June 11, 2003Publication date: November 6, 2003Applicant: MMC KOBELCO TOOL CO., LTD.Inventors: Yasuyuki Yamada, Natsuki Ichimiya, Koichi Maeda, Yusuke Tanaka, Kazuaki Tanaka
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Publication number: 20020081161Abstract: The invention provides a high-speed tool steel gear cutting tool in which fracture or chipping does not occur at the cutting edge, and which realizes excellent cutting performance over long periods. Moreover, a method of manufacturing a gear cutting tool including: a step for quenching a tool material comprising high-speed tool steel and which has been rough processed to a shape corresponding to a final shape of a gear cutting tool, to transform a structure of the tool material into martensite, a step for temperling the tool material after quenching to transform any residual austenite dispersingly distributed throughout a matrix of the martensite structure formed by the quenching, into martensite, and a step for finishing the tool material after tempering to a final shape, is characterized in that the tool material after quenching is subjected to sub-zero treatment involving cooling and holding at a temperature of less than −150° C.Type: ApplicationFiled: October 31, 2001Publication date: June 27, 2002Applicant: MMC KOBELCO TOOL CO., LTD.Inventors: Yasuyuki Yamada, Natsuki Ichimiya, Koichi Maeda, Yusuke Tanaka, Kazuaki Tanaka
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Patent number: 6296928Abstract: The present invention provides a member coated with a hard coating and to attain excellent wear resistance. The hard coating includes: an adhesion reinforcing layer formed on a surface of the member; and a second layer formed on the adhesion reinforcing layer and having a composition represented by the following formula: (AlpTiqVr)(NuCv) where 0≦p≦0.75, 0.20≦q≦0.75, 0.10≦r≦0.75, p+q+r=1, 0.6≦u≦1, and u+v=1. In order to further enhance the adhesion of the hard coating to the member, an intermediate layer may be formed between the first and second layers.Type: GrantFiled: May 4, 1999Date of Patent: October 2, 2001Assignee: MMC Kobelco Tool Co., Ltd.Inventors: Yasuyuki Yamada, Taiitsu Aoki, Yusuke Tanaka, Seiichiro Kitaura, Yasutaka Okazaki, Natsuki Ichimiya, Genki Matsumoto, Koichi Maeda, Toshiki Sato, Tatsuya Yasunaga, Kenji Yamamoto
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Patent number: RE45719Abstract: This invention provides a surface-coated cutting tool which exhibits excellent fracture resistance and wear resistance in high-speed cutting, such as high-speed gear cutting, high-speed milling, and high-speed drilling. The surface-coated cutting tool includes a hard coating layer composed of an alternately laminated layer structure of at least a thin layer A and a thin layer B formed on the surface of a tool substrate, such as a cemented carbide substrate, a cermet substrate, and a high-speed tool steel substrate. The thin layer A is an (Al, Cr, Si)N layer which satisfies a compositional formula: [AlXCrYSiZ]N (0.2?X?0.45, 0.4?Y?0.75, 0.01?Z?0.2, and X+Y+Z=1 in terms of atomic ratio). The thin layer B is an (Al, Ti, Si)N layer which satisfies a compositional formula: [AlUTiVSiW]N (0.05?U?0.75, 0.15?V?0.94, 0.01?W?0.1, and U+V+W=1 in terms of atomic ratio).Type: GrantFiled: May 15, 2014Date of Patent: October 6, 2015Assignee: MITSUBISHI MATERIALS CORPORATIONInventors: Koichi Maeda, Masanori Morikawa, Yuki Matsuoka, Natsuki Ichimiya