公开(公告)号：US10994340B2

公开(公告)日：2021-05-04

申请号：US16328210

申请日：2017-05-25

Applicant: Sumitomo Electric Hardmetal Corp.

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

IPC: B23B27/14 ,  B24B3/34 ,  B23G5/06 ,  B23D77/00 ,  B23B51/00 ,  B23C5/16 ,  B23F21/00 ,  B23C5/20

Abstract: A surface-coated cutting tool includes a base material and a coating formed on the base material. The base material is a cemented carbide or a cermet. A surface of the base material includes a rake face, a flank face, and a cutting edge face connecting the rake face to the flank face. The base material has an oxygen concentration of less than or equal to 1 at. % at a depth position of 0.4 μm from the cutting edge face. The coating includes a hard layer. A topmost layer in the hard layer has a compressive stress of more than or equal to 1.5 GPa in absolute value.

公开(公告)号：US10953473B2

公开(公告)日：2021-03-23

申请号：US16091612

申请日：2016-06-22

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

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

IPC: B32B27/14 ,  B23B27/14 ,  C23C16/34 ,  C23C16/36 ,  C23C28/00 ,  C23C16/455 ,  C23C30/00 ,  C23C16/02 ,  C23C28/04

Abstract: A surface-coated cutting tool includes a base material and a coating. A hard layer in the coating includes a plurality of 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 alternately stacked. The total thickness of the first layer and the second layer adjacent to each other is 3 nm or more and 40 nm or less. An angle of intersection between a normal direction to (111) plane that is a crystal plane of the crystal grain and the normal direction to the surface of the base material, an area ratio of the crystal grains having the angle of intersection of 0 degree or more to less than 10 degrees is 40% or more.

公开(公告)号：US20180339415A1

公开(公告)日：2018-11-29

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: B26B9/00 ,  B32B15/04

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：US10100403B2

公开(公告)日：2018-10-16

申请号：US15311429

申请日：2016-06-07

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

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

IPC: B23B27/00 ,  B23B27/14 ,  C23C16/34 ,  B23B51/00 ,  C23C16/36

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 0.76 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 0.76. 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：US09879350B2

公开(公告)日：2018-01-30

申请号：US15039988

申请日：2015-07-13

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Anongsack Paseuth ,  Hideaki Kanaoka ,  Takanori Detani ,  Shinya Imamura

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

CPC classification number: C23C28/044 ,  B23B27/148 ,  C23C16/36 ,  C23C16/40 ,  C23C16/403 ,  C23C28/042

Abstract: A surface-coated cutting tool according to the present invention includes a coating. The coating includes an α-Al2O3 layer. Each of the α-Al2O3 layers on a side of a rake face and a side of a flank face shows (001) orientation. In the α-Al2O3 layer on the rake face side, a length LR3 of a Σ3 crystal grain boundary exceeds 80% of a length LR3-29 of a Σ3-29 crystal grain boundary and is not lower than 10% and not higher than 50% of a total length LR of all grain boundaries. In the α-Al2O3 layer on the flank face side, a length LF3 of a Σ3 crystal grain boundary exceeds 80% of a length LF3-29 of a Σ3-29 crystal grain boundary and is not lower than 10% and not higher than 50% of a total length LF of all grain boundaries. A ratio LR3/LR3-29 is higher than a ratio LF3/LF3-29.

公开(公告)号：US09849517B2

公开(公告)日：2017-12-26

申请号：US15102992

申请日：2015-10-09

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Takanori Detani ,  Shinya Imamura ,  Hideaki Kanaoka ,  Anongsack Paseuth

IPC: B23B27/14 ,  B23P15/30 ,  C23C16/30 ,  C23C16/40

CPC classification number: B23B27/148 ,  B23B51/00 ,  B23B2224/04 ,  B23B2224/32 ,  B23B2228/04 ,  B23B2228/105 ,  B23P15/30 ,  B24C1/02 ,  C23C16/303 ,  C23C16/34 ,  C23C16/403 ,  C23C28/042 ,  C23C28/044

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 containing a plurality of α-Al2O3 crystal grains. The α-Al2O3 layer includes: a first region made up of an edge ridgeline, a region A of a rake face, and a region B of a flank face; a second region which is a region of the rake face except for the region A and covered with the coating; and a third region which is a region of the flank face except for the region B. The α-Al2O3 layer satisfies a relation b−a>0.5, where a is an average value of a TC(006) in the first region in texture coefficient TC(hkl) and b is an average value of the TC(006) in the second region or the third region in texture coefficient TC(hkl).

公开(公告)号：US09828254B2

公开(公告)日：2017-11-28

申请号：US15101849

申请日：2015-08-28

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Shinya Imamura ,  Anongsack Paseuth ,  Takanori Detani ,  Hideaki Kanaoka

IPC: C01F7/02 ,  C04B37/00 ,  B23B27/14

CPC classification number: C01F7/02 ,  B23B27/148 ,  B23B2224/04 ,  B23B2224/28 ,  B23B2224/32 ,  B23B2224/36 ,  B23B2228/04 ,  B23B2228/08 ,  B23B2228/105 ,  B23B2228/36 ,  C01P2002/78 ,  C04B37/001 ,  C04B37/005 ,  C04B2237/08 ,  C04B2237/083 ,  C04B2237/343 ,  C04B2237/36 ,  C04B2237/704 ,  C04B2237/708 ,  C04B2237/72 ,  C04B2237/76 ,  C23C16/0272 ,  C23C16/403 ,  C23C16/56 ,  C23C28/044 ,  C23C30/005

Abstract: A surface-coated cutting tool according to the present invention includes a coating. The coating has an α-Al2O3 layer. The α-Al2O3 layer includes a lower layer portion and an upper layer portion. When respective crystal orientations of crystal grains of α-Al2O3 are specified by performing EBSD analyses with an FE-SEM on a cross-section obtained when the α-Al2O3 layer is cut along a plane including a normal line of a surface of the α-Al2O3 layer and a color map is prepared based on the crystal orientations, in the color map, an area in the upper layer portion occupied by the crystal grains of which normal direction of a (001) plane is within ±10° with respect to a normal direction of the surface of the α-Al2O3 layer is equal to or more than 90%, and such an area in the lower layer portion is equal to or less than 50%.

公开(公告)号：US20170209936A1

公开(公告)日：2017-07-27

申请号：US15103381

申请日：2015-08-28

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Hideaki Kanaoka ,  Shinya Imamura ,  Anongsack Paseuth ,  Takanori Detani

IPC: B23B27/14 ,  C23C16/40 ,  C23C16/02 ,  B23C5/20

CPC classification number: B23B27/148 ,  B23B2224/04 ,  B23B2224/28 ,  B23B2224/36 ,  B23B2228/04 ,  B23B2228/105 ,  B23C5/20 ,  B23C2224/04 ,  B23C2224/28 ,  B23C2224/36 ,  B23C2228/04 ,  B23C2228/10 ,  C23C16/029 ,  C23C16/403 ,  C23C16/45523

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 α-Al2O3 crystal grains and sulfur, and has a TC(006) of more than 5 in texture coefficient TC(hkl). The sulfur has a concentration distribution in which a concentration of the sulfur decreases in a direction away from a base-material-side surface of the α-Al2O3 layer, in a thickness direction of the α-Al2O3 layer.

公开(公告)号：US20170191169A1

公开(公告)日：2017-07-06

申请号：US15101858

申请日：2015-08-28

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Shinya Imamura ,  Hideaki Kanaoka ,  Anongsack Paseuth ,  Takanori Detani

IPC: C23C28/04 ,  C23C16/34 ,  C23C16/30 ,  C23C16/40 ,  B23B27/14 ,  C23C16/36

CPC classification number: C23C28/044 ,  B23B27/148 ,  C23C16/0272 ,  C23C16/308 ,  C23C16/34 ,  C23C16/36 ,  C23C16/403 ,  C23C16/56 ,  C23C28/042 ,  C23C30/005

Abstract: A coating included in a surface-coated cutting tool according to the present invention has an α-Al2O3 layer. In a 15-μm square color map of a processed surface in parallel to a surface of the α-Al2O3 layer, an area A1 occupied by coarse crystal grains A is ≦50% and an area A2 in the area A1 occupied by crystal grains having a (001) plane orientation is ≧90%, an area B1 occupied by medium-sized crystal grains B of α-Al2O3 is 20 to 50%, an area B2 in the area B1 occupied by crystal grains having the (001) plane orientation is ≧90%, an area C1 occupied by fine crystal grains C of α-Al2O3 is 10 to 50%, an area C2 in the area C1 occupied by crystal grains having the (001) plane orientation is ≧50%.

公开(公告)号：US20170189967A1

公开(公告)日：2017-07-06

申请号：US15100008

申请日：2015-07-13

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Anongsack Paseuth ,  Hideaki Kanaoka ,  Takanori Detani ,  Shinya Imamura

IPC: B23B27/14 ,  C23C28/04

CPC classification number: B23B27/14 ,  C23C16/403 ,  C23C16/56 ,  C23C28/042 ,  C23C28/044

Abstract: A surface-coated cutting tool according to the present invention includes a coating. The coating includes an α-Al2O3 layer. Each of the α-Al2O3 layers on a side of a rake face and a side of a flank face shows (001) orientation. In the α-Al2O3 layer on the rake face side, a length LR3 of a Σ3 crystal grain boundary exceeds 80% of a length LR3-29 of a Σ3-29 crystal grain boundary and is not lower than 10% and not higher than 50% of a total length LR of all grain boundaries. In the α-Al2O3 layer on the flank face side, a length LF3 of a Σ3 crystal grain boundary exceeds 80% of a length LF3-29 of a Σ3-29 crystal grain boundary and is not lower than 10% and not higher than 50% of a total length LF of all grain boundaries. A ratio LR3/LR3-29 is lower than a ratio LF3/LF3-29.