公开(公告)号：US5769176A

公开(公告)日：1998-06-23

申请号：US675932

申请日：1996-07-05

Applicant: Hitoshi Sumiya ,  Shuichi Satoh

Inventor： Hitoshi Sumiya ,  Shuichi Satoh

IPC: B01J3/06 ,  B22F7/06

CPC classification number: B01J3/062 ,  B01J2203/062 ,  B01J2203/0655 ,  B01J2203/0685 ,  Y10T428/12146

Abstract: The present invention provides a diamond sintered compact having a higher strength as well as more excellent heat resistance, breakage resistance and corrosion resistance, as compared with those of the prior art, which thus can effectively be applied to tool materials for cutting or polishing of non-ferrous metals or ceramics, and edge materials of drill bits for excavating petroleum. The feature of the diamond sintered compact contains 0.1 to 30 volume % of at least one compound containing at least one element selected from the group consisting of silicon and titanium, and oxygen and the balance of diamond, for example, a titanate of a metal selected from the group consisting of iron, cobalt, nickel and manganese.

Abstract translation: 本发明提供了与现有技术相比具有更高强度以及更优异的耐热性，耐破坏性和耐腐蚀性的金刚石烧结体，因此可有效地应用于用于切割或抛光非工具材料的工具材料 有色金属或陶瓷，以及用于挖掘石油的钻头的边缘材料。 金刚石烧结体的特征在于，含有0.1〜30体积％的至少一种含有选自硅和钛中的至少一种元素的化合物，氧和金刚石余量例如选自金属的钛酸盐 由铁，钴，镍和锰组成的组。

公开(公告)号：US5194070A

公开(公告)日：1993-03-16

申请号：US915614

申请日：1992-07-21

Applicant: Hitoshi Sumiya ,  Kazuwo Tsuji

Inventor： Hitoshi Sumiya ,  Kazuwo Tsuji

IPC: B01J3/06 ,  C01B31/06 ,  C09C1/68 ,  C30B29/04

CPC classification number: B01J3/062 ,  B01J2203/061 ,  B01J2203/062 ,  B01J2203/0655 ,  B01J2203/068

Abstract: Diamond abrasive grains are produced by a process which comprises steps of: regularly arranging a plurality of diamond crystal seeds on a first metal solvent plate, stacking a second solvent metal plate on the first solvent metal plate so that the diamond crystal seeds are sandwiched by the first solvent metal plate and the second solvent metal plate, and stacking a graphite raw plate on the second solvent metal plate to construct a production system for the diamond abrasive grains, heating the system or heating the system with pressurizing to a temperature above a solvent metal-graphite eutectic point through a temperature and pressure condition in which diamond is thermodynamically unstable to establish a temperature and pressure condition in which diamond is thermodynamically unstable, and heating the system or heating the system with pressurizing to establish a temperature and pressure condition in which diamond is thermodynamically stable and maintaining said condition.

公开(公告)号：US4859531A

公开(公告)日：1989-08-22

申请号：US224930

申请日：1988-07-27

Applicant: Kazuwo Tsuji ,  Hitoshi Sumiya ,  Yoshiaki Kumazawa ,  Nobuo Urakawa ,  Keiichi Satoh

Inventor： Kazuwo Tsuji ,  Hitoshi Sumiya ,  Yoshiaki Kumazawa ,  Nobuo Urakawa ,  Keiichi Satoh

IPC: B23K35/30 ,  C04B37/00 ,  C04B37/02

CPC classification number: C04B37/006 ,  B23K35/3006 ,  C04B37/026 ,  C04B2235/6562 ,  C04B2235/6581 ,  C04B2237/121 ,  C04B2237/122 ,  C04B2237/124 ,  C04B2237/125 ,  C04B2237/126 ,  C04B2237/361 ,  C04B2237/401 ,  C04B2237/403 ,  C04B2237/708 ,  C04B2237/72 ,  C04B2237/76 ,  Y10T428/12576 ,  Y10T428/261 ,  Y10T428/31678

Abstract: A method for bonding a cubic boron nitride sintered compact to other cubic boron nitride sintered compact or to a body of shank material is disclosed. The method comprises forming a Ti layer of 0.01-1 .mu.m in thickness over a bonding interface between two cubic boron nitride sintered compacts or between a cubic boron nitride sintered compact and a body of shank material, forming a layer of Ni or Cu over the Ti layer to a thickness of 0.01-5 .mu.n, putting together the two cubic boron nitride sintered compacts or the cubic boron nitride sintered compact and the body of shank material with a 10-1,000 .mu.m foil of Al, Al-Ni alloy or Ag--Cu--In alloy being placed over the boding interface, and heating the cubic boron nitride sintered compact structure to temperatures above the meeting point of the metal foil and not exceeding 750.degree. C. in an inert atmosphere or in a vacuum.

公开(公告)号：US09850135B2

公开(公告)日：2017-12-26

申请号：US14235758

申请日：2012-07-26

Applicant: Kazuhiro Ikeda ,  Keiko Arimoto ,  Katsuko Yamamoto ,  Hitoshi Sumiya

Inventor： Kazuhiro Ikeda ,  Keiko Arimoto ,  Katsuko Yamamoto ,  Hitoshi Sumiya

IPC: B01J3/06 ,  C01B31/06

CPC classification number: C01B32/25 ,  B01J3/062 ,  B01J2203/061 ,  B01J2203/0655

Abstract: Nano polycrystalline diamond is composed of carbon and a plurality of impurities other than carbon. A concentration of each of the plurality of impurities is not higher than 0.01 mass %, and the nano polycrystalline diamond has a crystal grain size (a maximum length) not greater than 500 nm. The nano polycrystalline diamond can be fabricated by preparing graphite in which a concentration of an impurity is not higher than 0.01 mass % and converting graphite to diamond by applying an ultra-high pressure and a high temperature to graphite.

公开(公告)号：US09416304B2

公开(公告)日：2016-08-16

申请号：US14241362

申请日：2012-08-24

Applicant: Yuh Ishida ,  Hitoshi Sumiya

Inventor： Yuh Ishida ,  Hitoshi Sumiya

IPC: C09K3/14 ,  C04B35/5831 ,  C04B35/645

CPC classification number: C09K3/1418 ,  C04B35/5831 ,  C04B35/6455 ,  C04B2235/5292 ,  C04B2235/72 ,  C04B2235/767 ,  C04B2235/781 ,  C04B2235/788 ,  C04B2235/96

Abstract: A cubic boron nitride complex polycrystal contains granular cubic boron nitride and tabular cubic boron nitride. The average grain size of the granular cubic boron nitride is 500 nm or less. The maximum value of a short side of the tabular cubic boron nitride is 10 nm or more to 10000 nm or less. Thereby, it is possible to provide a cubic boron nitride complex polycrystal having high hardness and a manufacturing method therefor, a cutting tool, a wire-drawing die and a grinding tool including the same.

Abstract translation: 立方氮化硼复合多晶体包含立方氮化硼颗粒和片状立方氮化硼。 粒状立方氮化硼的平均粒径为500nm以下。 片状立方氮化硼的短边的最大值为10nm以上至10000nm以下。 由此，可以提供具有高硬度的立方氮化硼复合体多晶体及其制造方法，切削工具，拉丝模具和包括该方法的研磨工具。

公开(公告)号：US09403215B2

公开(公告)日：2016-08-02

申请号：US14111289

申请日：2012-04-10

Applicant: Natsuo Tatsumi ,  Katsuko Yamamoto ,  Hitoshi Sumiya

Inventor： Natsuo Tatsumi ,  Katsuko Yamamoto ,  Hitoshi Sumiya

IPC: B23B27/14 ,  B23B27/20 ,  C04B35/52 ,  C04B35/5831 ,  C04B35/645 ,  B82Y30/00

CPC classification number: B23B27/20 ,  B23B27/141 ,  B23B2226/125 ,  B82Y30/00 ,  C04B35/52 ,  C04B35/5831 ,  C04B35/645 ,  C04B2235/421 ,  C04B2235/425 ,  C04B2235/427 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/6567 ,  C04B2235/666 ,  C04B2235/781 ,  C04B2235/782 ,  C04B2235/785 ,  C04B2235/81 ,  C04B2235/87 ,  Y10T407/26 ,  Y10T407/27

Abstract: The present invention provides a cutting tool that achieves cutting with high precision. The cutting tool of the present invention includes a cutting edge composed of a polycrystalline body including high-pressure-phase hard grains that contain one or more elements selected from the group consisting of boron, carbon, and nitrogen, the polycrystalline body being formed by subjecting a non-diamond carbon material and/or boron nitride, serving as a starting material, to direct conversion sintering under ultra-high pressure and high temperature without adding a sintering aid or a catalyst, in which letting the radius of curvature of the nose of the cutting edge of the cutting tool be R1, the sintered grains constituting the polycrystalline body have an average grain size of 1.2×R1 or less and a maximum grain size of 2×R1 or less.

Abstract translation: 本发明提供一种以高精度实现切割的切削工具。 本发明的切削工具包括由包含高压相硬质粒子的多晶体构成的切削刃，所述高压相硬质粒子含有选自硼，碳和氮的一种以上的元素，所述多晶体通过 作为起始原料的非金刚石碳材料和/或氮化硼，在超高压和高温下直接转化烧结，而不添加烧结助剂或催化剂，其中使得鼻子的曲率半径 切削刀具的切削刃为R1，构成多晶体的烧结晶粒的平均粒径为1.2×R1以下，最大粒径为2×R1以下。

公开(公告)号：US20140186629A1

公开(公告)日：2014-07-03

申请号：US14235763

申请日：2012-07-26

Applicant: Kazuhiro Ikeda ,  Keiko Arimoto ,  Katsuko Yamamoto ,  Hitoshi Sumiya ,  Takeshi Sato

Inventor： Kazuhiro Ikeda ,  Keiko Arimoto ,  Katsuko Yamamoto ,  Hitoshi Sumiya ,  Takeshi Sato

IPC: C01B31/06

CPC classification number: C04B35/52 ,  B01J3/062 ,  B01J2203/061 ,  B01J2203/0655 ,  C01B32/25 ,  C04B2235/42 ,  C04B2235/427 ,  Y10T428/2982

Abstract: Nano polycrystalline diamond is composed of carbon, an element of different type which is an element other than carbon and is added to be dispersed in carbon at an atomic level, and an inevitable impurity. The polycrystalline diamond has a crystal grain size not greater than 500 nm. The polycrystalline diamond can be fabricated by subjecting graphite in which the element of different type which is an element other than carbon has been added to be dispersed in carbon at an atomic level to heat treatment within high-pressure press equipment.

Abstract translation: 纳米多晶金刚石由碳，作为除碳以外的元素的不同类型的元素组成，并且以碳原子级加入并且不可避免的杂质。 多晶金刚石的晶粒尺寸不大于500nm。 多晶金刚石可以通过将其中已经加入作为碳以外的元素的不同类型的元素以原子级分散在碳中的石墨制成，以在高压压制设备中进行热处理。

公开(公告)号：US08747798B2

公开(公告)日：2014-06-10

申请号：US13517921

申请日：2011-08-10

Applicant: Hitoshi Sumiya ,  Katsuko Yamamoto ,  Takeshi Sato ,  Keiko Arimoto

Inventor： Hitoshi Sumiya ,  Katsuko Yamamoto ,  Takeshi Sato ,  Keiko Arimoto

IPC: B01J3/06 ,  B26D3/08 ,  B31B1/25 ,  B26D11/00 ,  B24B21/18 ,  B23F21/03 ,  B21C3/00 ,  B23H7/00 ,  A62C31/02 ,  B32B7/02 ,  G11B5/64

Abstract: Polycrystalline diamond includes cubic diamond and hexagonal diamond, and a ratio of X-ray diffraction peak intensity of a (100) plane of the hexagonal diamond to X-ray diffraction peak intensity for a (111) plane of cubic diamond is not lower than 0.01%. In addition, a present method of manufacturing polycrystalline diamond includes the steps of preparing a non-diamond carbon material having a degree of graphitization not higher than 0.58 and directly converting the non-diamond carbon material to cubic diamond and hexagonal diamond and sintering the non-diamond carbon material, without adding any of a sintering agent and a binder, under pressure and temperature conditions at which diamond is thermodynamically stable.

公开(公告)号：US20100146865A1

公开(公告)日：2010-06-17

申请号：US12600618

申请日：2009-02-05

Applicant: Takeshi Sato ,  Katsuko Yamamoto ,  Naohiro Toda ,  Hitoshi Sumiya ,  Yutaka Kobayashi

Inventor： Takeshi Sato ,  Katsuko Yamamoto ,  Naohiro Toda ,  Hitoshi Sumiya ,  Yutaka Kobayashi

IPC: C01B31/06 ,  B05B1/02 ,  B24B7/00 ,  B24B5/00 ,  B05B1/00

CPC classification number: C01B32/25 ,  B26F3/004 ,  B82Y30/00 ,  C03B33/107 ,  C04B35/528 ,  C04B35/645 ,  C04B2235/425 ,  C04B2235/5427 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/5481 ,  C04B2235/72 ,  C04B2235/781 ,  C04B2235/785 ,  Y10T428/218 ,  Y10T428/268

Abstract: An object is to provide polycrystalline diamond applicable to diverse applications; and a water jet orifice, a stylus for gravure printing, a scriber, a diamond cutting tool, and a scribing wheel that include such polycrystalline diamond. This object is achieved by polycrystalline diamond obtained by converting and sintering non-diamond carbon under an ultrahigh pressure and at a high temperature without addition of a sintering aid or a catalyst, wherein sintered diamond grains constituting the polycrystalline diamond have an average grain diameter of more than 50 nm and less than 2500 nm and a purity of 99% or more, and the diamond has a D90 grain diameter of (average grain diameter+average grain diameter×0.9) or less.

Abstract translation: 目的是提供适用于多种应用的多晶金刚石; 以及喷水孔，用于凹版印刷的触笔，划线器，金刚石切割工具和包括这种多晶金刚石的划线轮。 该目的是通过在超高压和高温下转化和烧结非金刚石碳而获得的多晶金刚石，而不添加烧结助剂或催化剂，其中构成多晶金刚石的烧结金刚石晶粒的平均晶粒直径更多 金刚石的D90粒径（平均粒径+平均粒径×0.9）以下，优选为50nm以上且小于2500nm，纯度为99％以上。

公开(公告)号：US20100083583A1

公开(公告)日：2010-04-08

申请号：US12523543

申请日：2008-01-18

Applicant: Hitoshi Sumiya ,  Kazushi Obata ,  Miki Yoshinaga

Inventor： Hitoshi Sumiya ,  Kazushi Obata ,  Miki Yoshinaga

IPC: B23B27/20 ,  B23B27/14 ,  C01B31/06

CPC classification number: B01J3/062 ,  B01J2203/061 ,  B01J2203/062 ,  B01J2203/0655 ,  B01J2203/068 ,  B01J2203/0685 ,  B23B27/20 ,  B23B2226/315 ,  B82Y30/00 ,  C01B32/25 ,  C01P2002/60 ,  C04B35/52 ,  C04B35/645 ,  C04B2235/422 ,  C04B2235/425 ,  C04B2235/427 ,  C04B2235/5288 ,  C04B2235/5292 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/656 ,  C04B2235/781 ,  C04B2235/783 ,  C04B2235/785 ,  C04B2235/96 ,  C04B2235/963

Abstract: One object of the present invention is to provide a cutting tool excellent in strength and wear resistance. The cutting tool has a cutting blade formed using a highly hard diamond polycrystalline body made substantially only of diamond and produced by directly converting a raw material composition including a non-diamond type carbon material into diamond and sintering the diamond at an ultra high pressure and an ultra high temperature without adding a sintering aid or a catalyst, the polycrystalline body having a mixed construction including fine-grained diamond crystals with a maximum grain size of less than or equal to 100 nm and an average grain size of less than or equal to 50 nm and plate-like or particulate coarse-grained diamond crystals with a minimum grain size of greater than or equal to 50 nm and a maximum grain size of less than or equal to 10000 nm.

Abstract translation: 本发明的一个目的是提供一种强度和耐磨性优异的切削工具。 切割工具具有使用基本上仅由金刚石制成的高硬度金刚石多晶体形成的切割刀片，其通过将包含非金刚石型碳材料的原料组合物直接转化为金刚石并以超高压烧结金刚石， 超高温而不添加烧结助剂或催化剂，所述多晶体具有混合结构，所述混合结构包括最大粒度小于或等于100nm的细晶粒金刚石晶体和平均晶粒尺寸小于或等于50 nm和具有大于或等于50nm的最小晶粒尺寸和小于或等于10000nm的最大晶粒尺寸的板状或颗粒状粗粒金刚石晶体。