公开(公告)号：US11179782B2

公开(公告)日：2021-11-23

申请号：US17051303

申请日：2020-02-27

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Yasuki Kido ,  Anongsack Paseuth ,  Susumu Okuno ,  Shinya Imamura

IPC: B23B27/14 ,  C23C16/56 ,  C23C16/34

Abstract: A cutting tool including a rake face, a flank face, and a cutting edge portion, comprising a substrate and an AlTiN layer, the AlTiN layer including cubic AlxTi1-xN crystal grains, Al having an atomic ratio x of 0.7 or more and less than 0.95, the AlTiN layer including a central portion, the central portion at the rake face being occupied in area by (200) oriented crystal grains at a ratio of 80% or more, the central portion at the cutting edge portion being occupied in area by (200) oriented crystal grains at a ratio of 50% or more and less than 80%.

公开(公告)号：US11123802B2

公开(公告)日：2021-09-21

申请号：US16489312

申请日：2017-07-07

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

Inventor： Anongsack Paseuth ,  Yasuki Kido ,  Shinya Imamura ,  Koji Kuramochi

IPC: B32B27/14 ,  B23B27/14 ,  C23C16/34 ,  C23C16/36 ,  C23C16/56

Abstract: A surface-coated cutting tool includes a substrate and a coating formed on a surface of the substrate, the coating including one or two or more layers, at least one of the layers being an Al-rich layer including hard particles, the hard particle having a sodium chloride type crystal structure, and including a first unit phase in a form of a plurality of lumps and a second unit phase interposed between the lumps of the first unit phase, the first unit phase being composed of a nitride or carbonitride of AlxTi1-x, the first unit phase having an atomic ratio x of Al of 0.7 or more and 0.96 or less, the second unit phase being composed of a nitride or carbonitride of AlyTi1-y, the second unit phase having an atomic ratio y of Al exceeding 0.5 and less than 0.7.

公开(公告)号：US11033969B2

公开(公告)日：2021-06-15

申请号：US16636521

申请日：2019-06-26

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Keizo Tanaka ,  Shinya Imamura ,  Haruyo Fukui

IPC: B23B27/14

Abstract: A cutting tool includes a substrate and a coating that coats a surface of the substrate, the coating including a multilayer structure layer composed of at least one layer A and at least one layer B alternately deposited from a side closer to the substrate toward a side closer to a surface, the layer A having an average composition of AlxCr(1-x)N, the layer B being composed of AlyTi(1-y)N, the layer A being composed of a domain region and a matrix region, the domain region having a composition ratio of Cr larger than that of Cr of the matrix region, wherein x has a range of 0.5≤x≤0.8 and y has a range of 0.5≤y≤0.7.

公开(公告)号：US10745783B2

公开(公告)日：2020-08-18

申请号：US16305445

申请日：2018-07-02

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Yasuki Kido ,  Daiji Tabayashi ,  Shinya Imamura

IPC: C22C29/08 ,  B23C5/20 ,  C22C29/06 ,  B22F5/00

Abstract: A cemented carbide comprising a first hard phase composed of tungsten carbide particles and a binder phase including Co, the cemented carbide having a ratio Nt/Na of 0.9 or more, where, in any surface or any cross section of the cemented carbide, a region in which there is a distance X of 5 nm or less between surfaces respectively of tungsten carbide particles adjacent to each other, the surfaces facing each other along a length L of 100 nm or more, is referred to as a WC/WC interface, and Na represents a total number of WC/WC interfaces and Nt represents a number of WC/WC interfaces having distance X of 1 nm or more and 5 nm or less and having therein an atomic percentage of Co higher than an average value of atomic percentages of Co in the tungsten carbide particles.

公开(公告)号：US10654181B2

公开(公告)日：2020-05-19

申请号：US15740927

申请日：2017-04-25

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Kouhei Yoshimura ,  Shinya Imamura ,  Hideaki Kanaoka ,  Anongsack Paseuth ,  Satoshi Ono

IPC: B32B9/00 ,  B26B9/00 ,  B32B15/04 ,  C23C16/40 ,  C23C16/02 ,  C23C16/455 ,  C23C16/34 ,  C23C16/36

Abstract: A surface-coated cutting tool includes a base material and a coating formed on the base material. The coating includes an α-Al2O3 layer. The α-Al2O3 layer contains a plurality of α-Al2O3 crystal grains and chlorine, and has a TC(006) of more than 5 in texture coefficient TC(hkl). The α-Al2O3 layer includes lower and upper layers, the lower layer is located closer to the base material than the upper layer is, and the upper layer is located opposite to the base material across the lower layer, in a thickness direction of the α-Al2O3 layer. The lower layer has a thickness of 1.0 μm. The upper layer has a thickness of 0.5 μm or more. The chlorine in the lower layer has a concentration distribution in which an atomic concentration CCl of the chlorine decreases in a direction away from the base material, in a thickness direction of the lower layer.

公开(公告)号：US20190232380A1

公开(公告)日：2019-08-01

申请号：US16308996

申请日：2017-02-17

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Hideaki Kanaoka ,  Shinya Imamura ,  Anongsack Paseuth ,  Yuta Koyoshi ,  Satoshi Ono ,  Kouhei Yoshimura

IPC: B23B27/14 ,  B23C5/16 ,  B23G5/06 ,  C23C16/30

CPC classification number: B23B27/14 ,  B23B51/00 ,  B23B2222/28 ,  B23B2228/10 ,  B23C5/16 ,  B23D77/00 ,  B23F21/00 ,  B23G5/06 ,  C23C16/30

Abstract: A surface-coated cutting tool includes a substrate and a coating that is disposed on the substrate and formed so as to cover at least a portion of a flank face, in which the coating includes an inner layer and an outer layer formed on the inner layer, the inner layer is formed of at least one layer and includes an aluminum oxide layer as a layer in contact with the outer layer, the outer layer has a multilayer structure that includes three or more layers stacked on top of one another, and each of the layers that constitute the multilayer structure contains titanium.

公开(公告)号：USD850503S1

公开(公告)日：2019-06-04

申请号：US29564772

申请日：2016-05-16

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP. ,  Sumitomo Electric Industries, Ltd.

Designer： Satoru Kukino ,  Shinya Imamura ,  Takashi Harada

公开(公告)号：US20190071792A1

公开(公告)日：2019-03-07

申请号：US16182670

申请日：2018-11-07

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Anongsack Paseuth ,  Hideaki Kanaoka ,  Shinya Imamura ,  Satoshi Ono

IPC: C30B29/68 ,  B23B27/14 ,  C23C16/34 ,  C23C16/36 ,  C30B29/40 ,  C30B25/18

Abstract: A surface-coated cutting tool includes a base material and a coating formed on a surface of the base material. The coating includes a first hard coating layer including crystal grains having a sodium chloride-type crystal structure. The crystal grain has a layered structure in which a first layer composed of nitride or carbonitride of AlxTi1-x and a second layer composed of nitride or carbonitride of AlyTi1-y are stacked alternately into one or more layers. The first layer each has an atomic ratio x of Al varying in a range of 0.6 or more to less than 1. The second layer each has an atomic ratio y of Al varying in a range of 0.45 or more to less than 0.6. The largest value of difference between the atomic ratio x and the atomic ratio y is 0.05≤x−y≤0.5.

公开(公告)号：US10137505B2

公开(公告)日：2018-11-27

申请号：US15324894

申请日：2016-06-22

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Anongsack Paseuth ,  Satoshi Ono ,  Hideaki Kanaoka ,  Shinya Imamura

IPC: C23C16/34 ,  B23B51/00 ,  B23B27/14 ,  C23C16/36 ,  C23C16/02 ,  C23C16/40 ,  C23C16/56 ,  C30B28/14 ,  C30B29/38 ,  C30B29/68

CPC classification number: B23B51/00 ,  B23B27/14 ,  B23B2251/50 ,  C23C16/0272 ,  C23C16/34 ,  C23C16/36 ,  C23C16/403 ,  C23C16/52 ,  C23C16/56 ,  C30B28/14 ,  C30B29/38 ,  C30B29/68

Abstract: A cutting tool includes a base material and a coating formed on the base material. The coating includes a hard layer. The hard layer includes a plurality of crystal grains having a sodium chloride-type crystal structure. When the angle of intersection between the normal direction to (001) plane that is a crystal plane of the crystal grain and the normal direction to the surface of the base material is measured, a proportion A of the crystal grains having the angle of intersection of 0 degree or more to less than 20 degrees is 50% or more. The length of Σ3 grain boundaries is 50% or more of the length of Σ3-29 grain boundaries and is 1% or more and 30% or less of the total length of all boundaries that is the sum of the length of Σ3-29 grain boundaries and the length of general boundaries.

公开(公告)号：US20180099335A1

公开(公告)日：2018-04-12

申请号：US15567149

申请日：2017-03-02

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Hiroki Takeshita ,  Shuhei Misumi ,  Haruyo Fukui ,  Shinya Imamura ,  Kazuhiro Hirose

IPC: B23B27/14 ,  C23C14/32 ,  C23C14/35 ,  C23C14/06

CPC classification number: B23B27/14 ,  B23B2228/105 ,  B23F21/00 ,  B23G5/06 ,  C23C14/0021 ,  C23C14/024 ,  C23C14/0641 ,  C23C14/0664 ,  C23C14/325 ,  C23C14/35 ,  C23C28/044 ,  C23C28/42 ,  C23C28/44 ,  C23C30/005

Abstract: A surface-coated cutting tool includes a base material and a coating film formed on a surface of the base material. The coating film includes a first alternating layer and a second alternating layer formed on the first alternating layer. The first alternating layer includes first and second layers. The second alternating layer includes third and fourth layers. One or a plurality of the first layers and one or a plurality of the second layers are layered alternately, and one or a plurality of the third layers and one or a plurality of the fourth layers are layered alternately.