公开(公告)号：US12220747B2

公开(公告)日：2025-02-11

申请号：US17600612

申请日：2020-05-18

Applicant: Sumitomo Electric Hardmetal Corp.

Inventor： Fumiyoshi Kobayashi ,  Susumu Okuno ,  Anongsack Paseuth ,  Shinya Imamura

IPC: B23B27/14 ,  B23C5/16 ,  C23C16/36 ,  C23C16/40 ,  C23C28/04

Abstract: A cutting tool including a rake face and a flank face includes: a substrate; and a coating film disposed on the substrate, wherein the coating film includes an Al2O3 layer, residual stress of the Al2O3 layer has a minimum value Rmin at at least a portion of a region d1 of the rake face, the minimum value Rmin is more than −0.27 GPa and less than or equal to −0.1 GPa.

公开(公告)号：US11292065B2

公开(公告)日：2022-04-05

申请号：US17255032

申请日：2020-06-02

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Yasuki Kido ,  Susumu Okuno ,  Fumiyoshi Kobayashi

IPC: B23B27/14 ,  C23C28/00 ,  C23C16/34 ,  C23C16/02

Abstract: A cutting tool comprises a substrate and an AlTiN layer, the AlTiN layer including a first major surface and a second major surface, the AlTiN layer including a first region having a distance of 0 nm or more and 30 nm or less from the first major surface and having a maximum oxygen content ratio of more than 0 atomic % and less than 5 atomic %, a second region having a distance of more than 30 nm and 100 nm or less from the first major surface and having a maximum oxygen content ratio of 5 atomic % or more and 30 atomic % or less, and a third region having a distance of more than 100 nm and 150 nm or less from the first major surface and having a maximum oxygen content ratio of more than 0 atomic % and less than 5 atomic %.

公开(公告)号：US11273498B2

公开(公告)日：2022-03-15

申请号：US17259198

申请日：2020-06-04

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Yasuki Kido ,  Susumu Okuno ,  Fumiyoshi Kobayashi ,  Masahito Hikiji

IPC: B23B27/14 ,  C23C16/02 ,  C23C16/36 ,  C23C16/40 ,  C23C16/34

Abstract: A cutting tool includes: a substrate; a hard layer provided on the substrate; and a titanium carbonitride layer provided on the hard layer, wherein a thickness of the titanium carbonitride layer is more than or equal to 2 μm, a hardness of the titanium carbonitride layer at a room temperature is more than or equal to 35 GPa, and a Young's modulus of the titanium carbonitride layer at the room temperature is more than or equal to 800 GPa.

公开(公告)号：US10967433B2

公开(公告)日：2021-04-06

申请号：US16981099

申请日：2019-12-12

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Susumu Okuno ,  Shinya Imamura ,  Yuki Rikiso ,  Yasuki Kido ,  Fumiyoshi Kobayashi

IPC: B24D3/02 ,  B23B27/14 ,  B23C5/16 ,  B24D3/00 ,  B24D11/00 ,  B24D18/00 ,  C09K3/14

Abstract: A cutting tool comprises a substrate and a coating that coats the substrate, the coating including an α-alumina layer, the α-alumina layer including crystal grains of α-alumina, the α-alumina layer including a lower portion and an upper portion, the upper portion being occupied in area at a ratio of 50% or more by crystal grains of α-alumina having (006) plane with a normal thereto having a direction within ±15° with respect to a direction of a normal to the second interface, the lower portion being occupied in area at a ratio of 5% or more and less than 50% by crystal grains of α-alumina having (012) plane, (104) plane, (110) plane, (113) plane, (116) plane, (300) plane, (214) plane and (006) plane each with a normal thereto having a direction within ±15° with respect to the direction of the normal to the second interface.

公开(公告)号：US12227836B2

公开(公告)日：2025-02-18

申请号：US17616679

申请日：2020-04-10

Applicant: Sumitomo Electric Hardmetal Corp.

Inventor： Susumu Okuno ,  Yasuki Kido ,  Fumiyoshi Kobayashi ,  Anongsack Paseuth

IPC: C23C28/04 ,  C23C16/36 ,  C23C16/40

Abstract: Provided is a cutting tool including a base material and a coating layer provided on the base material, the coating layer including a titanium carbonitride layer provided on the base material, an intermediate layer provided on the titanium carbonitride layer in contact therewith, and an alumina layer provided on the intermediate layer in contact therewith, the intermediate layer being composed of a compound made of titanium, carbon, oxygen, and nitrogen, the intermediate layer having a thickness of more than 1 μm, when PC1 atomic % represents an atomic ratio of the carbon in an interface between the intermediate layer and the alumina layer, and PC2 atomic % represents an atomic ratio of the carbon at a point A away from the interface by 1 μm on a side of the intermediate layer, a ratio PC1/PC2 of the PC1 to the PC2 being more than or equal to 1.03.

公开(公告)号：US11998993B2

公开(公告)日：2024-06-04

申请号：US17298966

申请日：2019-12-12

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Susumu Okuno ,  Shinya Imamura ,  Yuki Rikiso ,  Yasuki Kido ,  Fumiyoshi Kobayashi

IPC: B32B27/14 ,  B23B27/14 ,  B23C5/16 ,  C23C16/34 ,  C23C16/36 ,  C23C16/40 ,  C23C28/04

CPC classification number: B23B27/148 ,  B23C5/16 ,  C23C16/34 ,  C23C16/36 ,  C23C16/403 ,  C23C28/044 ,  B23B2224/04 ,  B23B2224/32 ,  B23B2224/36

Abstract: A cutting tool comprises a substrate and a coating that coats the substrate, the coating including an α-alumina layer provided on the substrate, the α-alumina layer including crystal grains of α-alumina, the α-alumina layer including a lower portion and an upper portion, the upper portion being occupied in area at a ratio of 50% or more by crystal grains of α-alumina having a (006) plane with a normal thereto having a direction within ±15° with respect to a direction of the normal to the second interface, the lower portion being occupied in area at a ratio of 50% or more by crystal grains of α-alumina having a (110) plane with a normal thereto having a direction within ±15° with respect to the direction of the normal to the second interface, the α-alumina layer having a thickness of 3 μm or more and 20 μm or less.

公开(公告)号：US11534837B1

公开(公告)日：2022-12-27

申请号：US17633216

申请日：2021-06-14

Applicant: Sumitomo Electric Hardmetal Corp. ,  Sumitomo Electric Industries, Ltd.

Inventor： Fumiyoshi Kobayashi ,  Anongsack Paseuth ,  Yasuki Kido ,  Kosuke Tominaga

IPC: B23B27/14 ,  C23C16/36

Abstract: A cutting tool includes a substrate and a coated film arranged on the substrate. The coated film includes a first layer. The first layer includes a plurality of crystal grains. The crystal grains are composed of AlxTi1-xCyN1-y, wherein x is more than 0.65 and less than 0.95, and y is not less than 0 and less than 0.1. In a first region, the crystal grains have an average aspect ratio of not more than 3.0. In a second region, the crystal grains have an average aspect ratio of more than 3.0 and not more than 10.0. The crystal grains include crystal grains having a cubic crystal structure. The first layer has a ratio of an area occupied by the crystal grains having a cubic crystal structure of not less than 90%. The first layer has a thickness of not less than 2 μm and not more than 20 μm.

公开(公告)号：US11293095B2

公开(公告)日：2022-04-05

申请号：US17255220

申请日：2020-06-02

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Yasuki Kido ,  Susumu Okuno ,  Fumiyoshi Kobayashi

IPC: B23B27/14 ,  C23C16/34 ,  C23C16/36 ,  C23C16/02

Abstract: A cutting tool comprises a substrate and an AlTiN layer, the AlTiN layer including a first major surface and a second major surface, the AlTiN layer including a first region having a distance of 0 nm or more and 30 nm or less from the first major surface and having a maximum oxygen content ratio of 30 atomic % or more, a second region having a distance of more than 30 nm and 100 nm or less from the first major surface and having a maximum oxygen content ratio of 5 atomic % or more and less than 30 atomic %, and a third region having a distance exceeding 100 nm from the first major surface and having a maximum oxygen content ratio of less than 5 atomic %.

公开(公告)号：US11207736B2

公开(公告)日：2021-12-28

申请号：US15734270

申请日：2020-04-10

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Susumu Okuno ,  Yasuki Kido ,  Fumiyoshi Kobayashi ,  Anongsack Paseuth

IPC: B23B27/14 ,  C23C16/40 ,  C23C16/36

Abstract: Provided is a cutting tool including a base material and a coating layer provided on the base material, the coating layer including a titanium carbonitride layer provided on the base material, an intermediate layer provided on the titanium carbonitride layer in contact therewith, and an alumina layer provided on the intermediate layer in contact therewith, the intermediate layer being composed of a compound made of titanium, carbon, oxygen, and nitrogen, the intermediate layer having a thickness of more than 1 μm, when PN1 atomic % represents an atomic ratio of the nitrogen in an interface between the intermediate layer and the alumina layer, and PN2 atomic % represents an atomic ratio of the nitrogen at a point A away from the interface by 1 μm on a side of the intermediate layer, a ratio PN1/PN2 of the PN1 to the PN2 being more than or equal to 1.03.