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1. 发明公开

EP4350022A1 CEMENTED CARBIDE AND TOOL CONTAINING SAME 审中-公开
公开(公告)号：EP4350022A1
公开(公告)日：2024-04-10
申请号：EP22921854.0
申请日：2022-01-19
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： KIDO, Yasuki , OKAMURA, Katsumi , TOKUDA, Chiaki
IPC分类号： C22C29/08 , B23B27/14 , C22C1/05
摘要： A cemented carbide composed of a first hard phase, a second hard phase and a binder phase, in which the first hard phase is composed of tungsten carbide particles, the second hard phase is composed of at least one first compound selected from the group consisting of TiNbC, TiNbN and TiNbCN, the second hard phase has an average particle diameter of no more than 0.1 µm, the second hard phase has a dispersity of no more than 0.7, the second hard phase has a content of no less than 0.1 vol% and no more than 15 vol%, the binder phase contains at least one first element selected from the group consisting of iron, cobalt and nickel, and the binder phase has a content of no less than 0.1 vol% and no more than 20 vol%.

2. 发明公开

EP4011556A1 SUPERABRASIVE AND SUPERABRASIVE WHEEL 审中-公开
公开(公告)号：EP4011556A1
公开(公告)日：2022-06-15
申请号：EP20850705.3
申请日：2020-08-04
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD. , A.L.M.T. Corp.
发明人： OKAMURA, Katsumi , ISHII, Akito , OHATA, Masahiro , CHIHARA, Kentaro , NAKAMURA, Nobuhide
IPC分类号： B24D3/00 , B24D5/00 , C09K3/14
摘要： A super-abrasive grain comprises a body composed of cubic boron nitride or diamond, and a coating film including aluminum and oxygen and coating at least a portion of a surface of the body of the abrasive grain.

3. 发明公开

EP4000779A1 CUBIC BORON NITRIDE SINTERED COMPACT 审中-公开
公开(公告)号：EP4000779A1
公开(公告)日：2022-05-25
申请号：EP20841409.4
申请日：2020-07-17
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD. , Sumitomo Electric Hardmetal Corp.
发明人： HAMA, Hisaya , OKAMURA, Katsumi , ISHII, Akito , KUKINO, Satoru
IPC分类号： B23B27/14 , C04B35/5831
摘要： A cubic boron nitride sintered material includes: more than or equal to 50 volume% and less than 80 volume% of cubic boron nitride grains; and more than 20 volume% and less than or equal to 50 volume% of a binder phase, wherein the binder phase includes at least one selected from a group consisting of a compound composed of at least one element selected from a group consisting of a group 4 element, a group 5 element, a group 6 element in a periodic table, and aluminum, and at least one element selected from a group consisting of nitrogen, carbon, boron, and oxygen, and a solid solution originated from the compound, and when an oxygen content is measured in a direction perpendicular to an interface between cubic boron nitride grains using TEM-EDX, a first region having an oxygen content larger than an average value of an oxygen content of a cubic boron nitride grain exists, the interface exists in the first region, and a length of the first region along the direction perpendicular to the interface is more than or equal to 0.1 nm and less than or equal to 10 nm.

4. 发明公开

EP3632878A1 SINTERED BODY AND METHOD FOR PRODUCING SAME 审中-公开
公开(公告)号：EP3632878A1
公开(公告)日：2020-04-08
申请号：EP18805905.9
申请日：2018-02-15
申请人： Sumitomo Electric Industries, Ltd.
发明人： ISHII, Akito , OKAMURA, Katsumi
IPC分类号： C04B35/5835 , B23B27/14 , B23B27/18 , B23B27/20 , C04B35/5831 , C04B35/628 , C04B35/645
摘要： A sintered material includes a first phase and a second phase, wherein the first phase is composed of cubic boron nitride particles, the second phase is composed of a first material that is partially stabilized ZrO 2 in which Al 2 O 3 is dispersed in both or one of a crystal grain boundary and a crystal grain, the second phase is in contact with at least a portion of a surface of the first phase, and the following relational expressions are satisfied when more than or equal to two cubic boron nitride particles adjacent to and in direct contact with each other among the cubic boron nitride particles are defined as a contact body, Di represents a length of an entire perimeter of the contact body, n represents the number of contact locations at which the cubic boron nitride particles are in direct contact with each other, d k represents a length of each of the contact locations, and ∑d k (where k = 1 to n) represents a total length of the contact locations: Dii=Di+(2×∑d k (where k = 1 to n)); and [(Dii-Di)/Dii]×100≤50.

5. 发明公开

EP4331756A1 CUTTING TOOL 审中-公开
公开(公告)号：EP4331756A1
公开(公告)日：2024-03-06
申请号：EP22795284.3
申请日：2022-03-04
申请人： Sumitomo Electric Industries, Ltd.
发明人： ONO, Satoshi , PASEUTH, Anongsack , OKAMURA, Katsumi
IPC分类号： B23B27/14 , C23C16/42 , C23C28/04 , C23C30/00 , C23C16/02
摘要： A cutting tool comprising a base material and a coating disposed on the base material, wherein the coating comprises a hard particle layer; the hard particle layer is formed from a plurality of hard particles including titanium, silicon, carbon, and nitrogen; in the hard particles, a concentration of the silicon periodically changes along a first direction set in the hard particles; and an orientation of the hard particle layer is a (220) orientation.

6. 发明公开

EP4331755A1 CUTTING TOOL 审中-公开
公开(公告)号：EP4331755A1
公开(公告)日：2024-03-06
申请号：EP22795283.5
申请日：2022-03-04
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： ONO, Satoshi , PASEUTH, Anongsack , OKAMURA, Katsumi
IPC分类号： B23B27/14 , C23C16/42
摘要： A cutting tool comprising a base material and a coating disposed on the base material, wherein the coating comprises a hard particle layer; the hard particle layer is formed from a plurality of hard particles including titanium, silicon, carbon, and nitrogen; in the hard particles, a concentration of the silicon periodically changes along a first direction set in the hard particles; and an orientation of the hard particle layer is a (311) orientation.

7. 发明公开

EP4296390A1 CEMENTED CARBIDE 审中-公开
公开(公告)号：EP4296390A1
公开(公告)日：2023-12-27
申请号：EP22930135.3
申请日：2022-03-15
申请人： Sumitomo Electric Industries, Ltd.
发明人： KIDO, Yasuki , OKAMURA, Katsumi
IPC分类号： C22C29/08 , B22F3/15 , B22F1/00 , B22F1/14
摘要： A cemented carbide includes a tungsten carbide grain and a binder phase, wherein the cemented carbide includes 80 volume% or more of the tungsten carbide grain and the binder phase in total, the cemented carbide includes 0.1 volume% or more and 20 volume% or less of the binder phase, the tungsten carbide grain is composed of a first region and a second region, the first region is a region of 0 nm or more and 50 nm or less from a surface of the tungsten carbide grain, the second region is a portion of the tungsten carbide grain other than the first region, each of the first region and the second region includes a first metal element, the first metal element is at least one selected from a group consisting of titanium, niobium, and tantalum, a ratio R1 of the number of atoms of the first metal element to a total of the number of atoms of the first metal element and the number of atoms of a tungsten element in the first region is 1.30 times or more as large as a ratio R2 of the number of atoms of the first metal element to a total of the number of atoms of the first metal element and the number of atoms of the tungsten element in the second region, the R2 is 2.0% or more and 10.0% or less, and the binder phase includes cobalt.

8. 发明公开

EP4275822A1 CEMENTED CARBIDE AND CUTTING TOOL 审中-公开
公开(公告)号：EP4275822A1
公开(公告)日：2023-11-15
申请号：EP22779565.5
申请日：2022-02-09
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： KIDO, Yasuki , OKAMURA, Katsumi
IPC分类号： B23B27/14 , C22C29/08 , C22C1/05
摘要： A cemented carbide includes a hard phase and a binder phase, wherein the hard phase has first hard phase grains each composed of tungsten carbide, second hard phase grains including a core portion and a rim portion that covers at least a portion of the core portion, a composition of the core portion is represented by M1 x1 W 1-x1 C 1-y1 N y1 , a composition of the rim portion is represented by M2 x2 W 1-x2 C 1-y2 N y2 , each of the M1 and M2 is at least one metal element selected from a group consisting of a group 4 element, a group 5 element in a periodic table, chromium and molybdenum, the x1 is 0.70 or more and 1.00 or less, the y1 is 0 or more and 0.90 or less, and the x2 is 0.20 or more and less than 0.70, the y2 is 0 or more and 0.90 or less, and the binder phase includes at least one iron group element selected from a group consisting of iron, cobalt and nickel, and a 50% cumulative number grain size of the second hard phase grains is 0.01 µm or more and 1.0 µm or less.

9. 发明公开

EP4242334A1 CUBIC BORON NITRIDE SINTERED BODY 审中-实审
公开(公告)号：EP4242334A1
公开(公告)日：2023-09-13
申请号：EP20960760.5
申请日：2020-11-04
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD. , Sumitomo Electric Hardmetal Corp.
发明人： ISHII, Akito , OKAMURA, Katsumi , HAMA, Hisaya , ISHIDA, Yuh , NAGASHIMA, Issei
IPC分类号： C22C29/16
摘要： A cubic boron nitride sintered material includes: more than or equal to 80 volume% and less than or equal to 96 volume% of cubic boron nitride grains; and a binder, wherein the binder includes tungsten carbide, cobalt, and an aluminum compound, and Ha/Hb≥0.40 is satisfied, where Hb represents a hardness of the cubic boron nitride sintered material and Ha represents a hardness of the cubic boron nitride sintered material after performing acid treatment onto the cubic boron nitride sintered material to substantially remove the binder in the cubic boron nitride sintered material.

10. 发明公开

EP4000778A1 CUBIC BORON NITRIDE SINTERED COMPACT AND METHOD FOR MANUFACTURING SAME 审中-公开
公开(公告)号：EP4000778A1
公开(公告)日：2022-05-25
申请号：EP20841032.4
申请日：2020-07-17
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD. , Sumitomo Electric Hardmetal Corp.
发明人： HAMA, Hisaya , OKAMURA, Katsumi , ISHII, Akito , KUKINO, Satoru
IPC分类号： B23B27/14 , C04B35/5831
摘要： A cubic boron nitride sintered material includes: more than or equal to 20 volume% and less than 80 volume% of cubic boron nitride grains; and more than 20 volume% and less than or equal to 80 volume% of a binder phase, wherein the binder phase includes at least one selected from a group consisting of a compound composed of at least one element selected from a group consisting of a group 4 element, a group 5 element, a group 6 element in a periodic table, and aluminum, and at least one element selected from a group consisting of nitrogen, carbon, boron, and oxygen, and a solid solution originated from the compound, and when a carbon content is measured from a cubic boron nitride grain into the binder phase in a direction perpendicular to an interface between the cubic boron nitride grain and the binder phase using TEM-EDX, a first region having a carbon content larger than an average value of a carbon content of the binder phase exists, the interface exists in the first region, and a length of the first region is more than or equal to 0.1 nm and less than or equal to 10 nm.

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