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公开(公告)号：US11219953B2
公开(公告)日：2022-01-11
申请号：US16925976
申请日：2020-07-10
申请人： TUNGALOY CORPORATION
发明人： Naoyuki Fukushima , Yusuke Hirano
摘要： A cutting tool comprising a substrate and a coating layer formed on the substrate, wherein the coating layer has, from a side closer to the substrate, a lower layer that contains a compound having a composition represented by (AlxTi1-x)N, and an upper layer that is formed on the lower layer and contains a compound having a composition represented by (AlyTi1-yN; the average thickness of the lower layer is 1.0 μm or more and 10.0 μm or less; the average thickness of the upper layer is 1.0 μm or more and 10.0 μm or less; and an area ratio GOSi of crystal grains having a GOS value of 1 degree or lower in the lower layer and an area ratio GOSs of crystal grains having a GOS value of 1 degree or lower in the upper layer satisfy GOSi
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公开(公告)号：US11298750B2
公开(公告)日：2022-04-12
申请号：US16748619
申请日：2020-01-21
申请人： TUNGALOY CORPORATION
摘要： Provided is a coated cutting tool of long tool life and that affords superior machined surface quality. A coated cutting tool includes a substrate, and a coating layer formed on the substrate. The coated cutting tool includes at least one flank face, at least one rake face, and a honing section rounded and connecting the flank face and the rake face. The coating layer includes a lower layer, an intermediate layer and an upper layer, in this order from the side of the substrate. The lower layer is composed of one, or two or more Ti compound layers made up of a Ti compound of Ti and at least one element selected from the group consisting of C, N, O and B. The intermediate layer contains α-type Al2O3. The upper layer contains a compound represented by following formula (1): Ti(C1-x-yNxOy) (1). An average thickness of the coating layer on the flank face side is 5.0 μm more and 30.0 μm or less. A first cross section positioned at a distance of up to 1 μm towards the substrate, from an interface of the intermediate layer and the upper layer side, the cross section being parallel to an interface of the substrate and the lower layer, satisfies the condition represented by following expression (i): RSA≥40 (i). A second cross section, positioned at a distance of up to 1 μm from the interface of the upper layer and the intermediate layer side towards an interface on the opposite side, the cross section being parallel to the interface of the substrate and the lower layer, satisfies the condition represented by following expression (ii): RSB≥40 (ii). The intermediate layer is exposed at least at the honing section.
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公开(公告)号：US10974324B2
公开(公告)日：2021-04-13
申请号：US16185143
申请日：2018-11-09
申请人： TUNGALOY CORPORATION
发明人： Kinya Takahashi , Naoyuki Fukushima
IPC分类号： B32B27/14 , B23B27/14 , C23C16/34 , C23C16/32 , C23C16/40 , C23C16/36 , C23C16/56 , C23C28/04 , C23C16/02
摘要： A coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate, wherein: the coating layer comprises a lower layer including at least one Ti compound layer containing a specific Ti compound, an intermediate layer including an α-type Al2O3 layer containing α-type Al2O3, and an upper layer including a TiCN layer containing TiCN; the respective layers are laminated in this order from the substrate side toward a surface side of the coating layer; an average thickness of the coating layer is from 5.0 μm or more to 30.0 μm or less; and an angle formed by a normal to a cross-sectional surface which is located within a predetermined range below a surface of the intermediate layer and is parallel to the surface of the substrate and a normal to a (001) plane of a particle of an α-type Al2O3 layer, and an angle formed by a normal to a cross-sectional surface which is located within a predetermined range below a surface of the upper layer and is parallel to the surface of the substrate and a normal to a (111) plane of a particle of a TiCN layer, respectively satisfy predetermined conditions.
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公开(公告)号：US10766076B2
公开(公告)日：2020-09-08
申请号：US16401674
申请日：2019-05-02
申请人： TUNGALOY CORPORATION
发明人： Naoyuki Fukushima
IPC分类号： C04B35/56 , C22C29/06 , C22C29/08 , B23B27/14 , C04B41/00 , C04B41/50 , C04B41/87 , C23C16/02 , C23C16/30 , C23C16/34 , C23C16/36 , C23C16/40
摘要： A coated cutting tool comprising a cemented carbide and a coating layer formed on a surface of the cemented carbide, wherein: an average thickness of the coating layer is from 5.0 μm or more to 30.0 μm or less; and in the cemented carbide, when regarding a region thereof which ranges from the surface of the cemented carbide to a depth of 20.0 μm in a direction opposite to the coating layer as a surface region, and also regarding a region thereof on a side opposite to the coating layer across the surface region as an inner region, an average value of KAM values in the surface region KAMs and an average value of KAM values in the inner region KAMi satisfy a condition represented by formula (1) below. 0.00°≤|KAMs−KAMi|≤0.10° (1)
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公开(公告)号：US20190160547A1
公开(公告)日：2019-05-30
申请号：US16185143
申请日：2018-11-09
申请人： TUNGALOY CORPORATION
发明人： Kinya Takahashi , Naoyuki Fukushima
摘要： A coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate, wherein: the coating layer comprises a lower layer including at least one Ti compound layer containing a specific Ti compound, an intermediate layer including an α-type Al2O3 layer containing α-type Al2O3, and an upper layer including a TiCN layer containing TiCN; the respective layers are laminated in this order from the substrate side toward a surface side of the coating layer; an average thickness of the coating layer is from 5.0 μm or more to 30.0 μm or less; and an angle formed by a normal to a cross-sectional surface which is located within a predetermined range below a surface of the intermediate layer and is parallel to the surface of the substrate and a normal to a (001) plane of a particle of an α-type Al2O3 layer, and an angle formed by a normal to a cross-sectional surface which is located within a predetermined range below a surface of the upper layer and is parallel to the surface of the substrate and a normal to a (111) plane of a particle of a TiCN layer, respectively satisfy predetermined conditions.
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公开(公告)号：US11577322B2
公开(公告)日：2023-02-14
申请号：US17359751
申请日：2021-06-28
申请人： TUNGALOY CORPORATION
发明人： Naoyuki Fukushima
IPC分类号： B23B27/14 , C23C16/02 , C23C16/30 , C23C16/32 , C23C16/36 , C23C16/40 , B23C5/16 , C23C28/04 , C23C30/00
摘要： An object of the invention is to provide a coated cutting tool whose tool life can be extended by having excellent wear resistance and fracture resistance. The coated cutting tool includes: a substrate; and a coating layer formed on a surface of the substrate, in which the coating layer includes a lower layer, an intermediate layer, and an upper layer in this order from a substrate side to a surface side of the coating layer, the lower layer includes one or more Ti compound layers formed of a specific Ti compound, the intermediate layer contains TiCNO, TiCO, or TiAlCNO, the upper layer contains α-type Al2O3, an average thickness of the lower layer is 2.0 μm or more and 8.0 μm or less, an average thickness of the intermediate layer is 0.5 μm or more and 2.0 μm or less and is 10% or more and 20% or less of an average thickness of the entire coating layer, an average thickness of the upper layer is 0.8 μm or more and 6.0 μm or less, and in the intermediate layer, a ratio of a length of CSL grain boundaries and a ratio of a length of Σ3 grain boundaries are in specific ranges.
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公开(公告)号：US11571751B2
公开(公告)日：2023-02-07
申请号：US17352666
申请日：2021-06-21
申请人： TUNGALOY CORPORATION
发明人： Naoyuki Fukushima
IPC分类号： B32B15/04 , B32B17/06 , B23B27/14 , C23C28/00 , B23C5/16 , C23C16/36 , C23C16/40 , C23C16/32 , C23C16/34 , C23C30/00 , C23C28/04
摘要： An object of the invention is to provide a coated cutting tool whose tool life can be extended by having excellent wear resistance and fracture resistance. The coated cutting tool includes: a substrate; and a coating layer formed on a surface of the substrate, in which the coating layer includes a lower layer, an intermediate layer, and an upper layer in this order from a substrate side to a surface side of the coating layer, the lower layer includes one or more Ti compound layers formed of a specific Ti compound, the intermediate layer contains TiCNO, TiCO, or TiAlCNO, the upper layer contains α-type Al2O3, an average thickness of the lower layer is 2.0 μm or more and 8.0 μm or less, an average thickness of the intermediate layer is 0.5 μm or more and 2.0 μm or less and is 10% or more and 20% or less of a thickness of the entire coating layer, an average thickness of the upper layer is 0.8 μm or more and 6.0 μm or less, and in the intermediate layer, a ratio of a length of CSL grain boundaries to a total length 100% of a total grain boundary is 20% or more and 60% or less.
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公开(公告)号：US11007579B2
公开(公告)日：2021-05-18
申请号：US16554067
申请日：2019-08-28
申请人： TUNGALOY CORPORATION
发明人： Naoyuki Fukushima
摘要： A coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate, wherein: the coating layer comprises a lower layer, an intermediate layer and an upper layer, the lower layer, the intermediate layer and the upper layer being laminated in order from the substrate side toward a surface side of the coating layer; the lower layer comprises a Ti compound layer; the intermediate layer contains α-Al2O3; the upper layer contains TiCN; an average thickness of each of the lower layer, the intermediate layer, and the upper layer is within a specific range; a ratio of a length of Σ3 grain boundaries to a total 100% length of all grain boundaries in a specific region of the upper layer is from 20% or more to 60% or less; and a ratio of (111)-oriented grains in the upper layer is 30 area % or more.
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公开(公告)号：US11433459B2
公开(公告)日：2022-09-06
申请号：US17126694
申请日：2020-12-18
申请人： TUNGALOY CORPORATION
摘要： A covered cutting tool having a cemented carbide and a covering layer formed on the cemented carbide. The covered cutting tool includes a rake face, a flank face, and a cutting edge line part located between the rake face and the flank face. The coating layer includes a compound layer containing a compound having a composition represented by (AlxTi1-x)N. The average thickness T1 of the covering layer in the cutting edge line part and the average thickness T2 of the coating layer in the rake face at a position 2 mm or more away from the cutting edge line part toward the rake face are within specific ranges and satisfy T2
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公开(公告)号：US11273497B2
公开(公告)日：2022-03-15
申请号：US16705586
申请日：2019-12-06
申请人： TUNGALOY CORPORATION
发明人： Naoyuki Fukushima
摘要： A coated cutting tool comprising: a substrate; and a coating layer formed on a surface of the substrate, wherein: the coating layer comprises a lower layer, an intermediate layer and an upper layer in this order from the substrate side; the lower layer comprises one or more Ti compound layers containing a Ti compound of Ti and an element of at least one kind selected from the group consisting of C, N, O and B; and the intermediate layer comprises an α-Al2O3 layer containing α-Al2O3; and the upper layer comprises a TiCN layer containing TiCN; an average thickness of the coating layer is within a specific range, and an average thickness of the upper layer is within a specific range; in a cross section perpendicular to the surface of the substrate, the grains in the TiCN layer constituting the upper layer satisfies a specific condition.
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