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    High-pressure phase boron nitride base sinter
    2.
    发明授权
    High-pressure phase boron nitride base sinter 失效
    高压相氮化硼基烧结矿

    公开(公告)号：US6008153A

    公开(公告)日：1999-12-28

    申请号：US101742

    申请日：1998-07-16

    申请人： Satoru Kukino ,  Tetsuo Nakai ,  Junichi Shiraishi ,  Tomohiro Fukaya ,  Shinya Uesaka

    发明人： Satoru Kukino ,  Tetsuo Nakai ,  Junichi Shiraishi ,  Tomohiro Fukaya ,  Shinya Uesaka

    IPC分类号： C04B35/5831 ,  C04B35/5835

    CPC分类号： C04B35/5831

    摘要： A high-pressure phase boron nitride-based high-hardness high-strength sintered body for cutting tools represented by a milling tool and an end mill etc., which is improved in wear resistance and chipping resistance, is obtained. The high-pressure phase boron nitride-based sintered body according to the present invention comprises a plurality of grains (1) of high-pressure phase boron nitride and a binder phase (2, 3), and the content of the aforementioned grains (1) is at least 20.0 volume % and not more than 99.7 volume %. The aforementioned binder phase (2, 3) includes a first binder phase (2) enclosing the aforementioned grains (1) and a second binder phase (3) other than that. The first binder phase (2) consists of the form of at least either a nitride of at least one of Ti, TiAl, Zr and Hf or a solid solution thereof. The aforementioned second binder phase (3) includes a grain growth suppressive binder phase (4) between a plurality of the aforementioned grains (1) enclosed with the aforementioned first binder phase (2).

    摘要翻译： PCT No.PCT / JP97 / 04410 Sec。 371日期：1998年7月16日 102（e）日期1998年7月16日PCT 1997年12月3日PCT PCT。 出版物WO98 / 24736 日期1998年6月11日获得了耐磨性和耐崩裂性提高的用于切削工具的高压相氮化硼系高硬度高强度烧结体。 根据本发明的高压相氮化硼基烧结体包括多个高压相氮化硼颗粒（1）和粘结相（2,3），并且上述颗粒（1）的含量 ）为20.0体积％以上且99.7体积％以下。 上述粘合剂相（2,3）包括包围上述颗粒（1）的第一粘结相（2）和除此之外的第二粘结相（3）。 第一粘合剂相（2）由至少一种Ti，TiAl，Zr和Hf的氮化物或其固溶体的形式组成。 上述第二粘结相（3）包括在由上述第一粘结相（2）包围的多个上述颗粒（1）之间的晶粒生长抑制粘合剂相（4）。

    Hard and tough sintered body
    3.
    发明授权
    Hard and tough sintered body 失效
    坚硬坚韧的烧结体

    公开(公告)号：US6001758A

    公开(公告)日：1999-12-14

    申请号：US960773

    申请日：1997-10-30

    申请人： Tomohiro Fukaya ,  Tetsuo Nakai ,  Junichi Shiraishi ,  Satoru Kukino ,  Shinya Uesaka

    发明人： Tomohiro Fukaya ,  Tetsuo Nakai ,  Junichi Shiraishi ,  Satoru Kukino ,  Shinya Uesaka

    IPC分类号： C04B35/5831 ,  C04B35/5835

    CPC分类号： C04B35/5831

    摘要： A sintered body consists of high-pressure phase boron nitride, a residual binder phase and an unavoidable impurity, and contains high-pressure phase boron nitride powder which is previously coated with a binder before sintering. The coating binder consists of an element belonging to the group 4a, 5a or 6a of the periodic table or the like, and has an average thickness of 5 to 300 nm. Binder powder other than the coating binder consists of an element belonging to the group 4a, 5a or 6a of the periodic table or the like, and a contact ratio of high-pressure phase boron nitride particles in surface-to-surface contact with each other is at least 20% and less than 50%. The resulting high-pressure phase boron nitride-based hard and tough sintered body for a cutting tool is improved in wear resistance and chipping resistance.

    摘要翻译： 烧结体由高压相氮化硼，残余粘结相和不可避免的杂质组成，并且包含预先在烧结之前用粘合剂涂覆的高压相氮化硼粉末。 涂层粘合剂由属于周期表等的4a，5a或6a族元素组成，平均厚度为5〜300nm。 涂层粘合剂以外的粘合剂粉末由属于周期表等的4a，5a或6a族的元素组成，高压相氮化硼颗粒在表面与表面之间接触的接触比 至少为20％且小于50％。 所得到的用于切削工具的高压相氮化硼基硬坚韧烧结体的耐磨性和耐崩裂性提高。

    High strength sintered impact having excellent resistance to cratering
    5.
    发明授权
    High strength sintered impact having excellent resistance to cratering 有权
    高强度烧结冲击具有优异的耐火蚀性

    公开(公告)号：US06635593B1

    公开(公告)日：2003-10-21

    申请号：US09913265

    申请日：2001-08-10

    申请人： Satoru Kukino ,  Tomohiro Fukaya ,  Junichi Shiraishi ,  Tetsuo Nakai

    发明人： Satoru Kukino ,  Tomohiro Fukaya ,  Junichi Shiraishi ,  Tetsuo Nakai

    IPC分类号： C04B355831

    CPC分类号： C04B35/5831 ,  Y10T407/27

    摘要： A sintered material containing high-pressure phase-type boron nitride and a binder is provided. The high-pressure phase-type boron nitride is contained in an amount of from 50% to 78% by volume, and the balance is a binder phase. The binder phase comprises at least one selected from the group consisting of nitride, carbide, carbonitride, and boride of Ti, nitride, boride and oxide of Al, carbide and boride of W, nitride, carbide, carbonitride and boride of Co, and carbide and boride of Ni, or a mutual solid solution thereof. The binder phase forms a binder phase which is continuous in a sintered material texture. The weight of metal components Al, W, Co and Ni which are present as compounds in the sintered material is from 3% to 20% based on the sintered material. The sintered material is excellent in crater resistance and capable of realizing a long tool life, even under the condition that the temperature of the cutting edge becomes high and the impact is large, as in high-speed interrupted cutting of hardened steel where the cutting speed V becomes at least 150 m/min.

    摘要翻译： 提供含有高压相型氮化硼和粘合剂的烧结材料。 高压相型氮化硼的含量为50〜78体积％，余量为粘结相。 粘结相包括选自Ti，氮化物，硼化物和Al的氧化物的氮化物，碳化物，碳氮化物和硼化物中的至少一种，W，氮化物，碳化物，碳氮化物和Co的硼化物的碳化物和硼化物，以及碳化物 和Ni的硼化物或其相互固溶体。 粘结相形成在烧结材料结构中连续的粘结相。 烧结材料中作为化合物存在的金属成分Al，W，Co，Ni的重量相对于烧结体为3〜20％。 该烧结材料即使在切削刃的温度高，冲击大的条件下也能够实现长的刀具寿命，因为在切削速度高的淬火钢的高速切断切削中 V变为至少150m / min。

    Method of cutting hardened steel with high accuracy
    6.
    发明授权
    Method of cutting hardened steel with high accuracy 有权
    高精度切削淬火钢的方法

    公开(公告)号：US6065377A

    公开(公告)日：2000-05-23

    申请号：US175968

    申请日：1998-10-21

    申请人： Takashi Harada ,  Tetsuo Nakai ,  Tomohiro Fukaya ,  Junichi Shiraishi

    发明人： Takashi Harada ,  Tetsuo Nakai ,  Tomohiro Fukaya ,  Junichi Shiraishi

    IPC分类号： B23B1/00 ,  B23B3/00

    CPC分类号： B23B1/00 ,  Y10T407/26 ,  Y10T407/27 ,  Y10T82/10

    摘要： A method of cutting hardened steel using a cBN sintered tool which can improve the surface roughness while maintaining high dimensional accuracy. The upper limit of the tool feed rate is set at such a value that a theoretical surface roughness calculated from the feed rate is between 2/3 and 1/1000 of the target surface roughness. The amount of change of the feed rate between the upper and lower limits of the tool feed rate is set to be between 0.002 and 0.05 mm/rev, and the amount of every feed rate change is set not to be equal to the original feed rate multiplied by an integer. The feed rate is changed forcibly for every number of workpieces for which the total cutting length is between 10 and 1000 meters.

    摘要翻译： 使用可以提高表面粗糙度同时保持高尺寸精度的cBN烧结工具来切割硬化钢的方法。 刀具进给速度的上限被设定为从进给速度计算的理论表面粗糙度在目标表面粗糙度的2/3和1/1000之间的值。 刀具进给速度的上限和下限之间的进给速率的变化量设定在0.002和0.05mm / rev之间，并且每个进给速率变化的量被设定为不等于原始进给速率 乘以整数。 对于总切割长度在10到1000米之间的每个工件数量，进给速率被强制变化。

    Hard sintered body for tool
    7.
    发明授权
    Hard sintered body for tool 失效
    用于工具的硬质烧结体

    公开(公告)号：US6001757A

    公开(公告)日：1999-12-14

    申请号：US941454

    申请日：1997-09-30

    申请人： Tomohiro Fukaya ,  Tetsuo Nakai

    发明人： Tomohiro Fukaya ,  Tetsuo Nakai

    IPC分类号： C04B35/56 ,  C04B35/58 ,  C04B35/583 ,  C04B35/5831 ,  C22C29/16 ,  C04B35/5835

    CPC分类号： C04B35/5831

    摘要： A hard sintered body for a tool contains 25 to 47 vol. % of cBN, 40 to 70 vol. % and especially less than 45 vol. % in total of a carbo-nitride, and a boride of Ti, and 2 to 20 vol. % in total of a boride and a nitride of Al. In the carbo-nitride of Ti, the ratio of carbon to nitrogen is in the range of 60:40 to 30:70. In this hard sintered body, cBN particles are bonded to each other through binder phases. The obtained hard sintered body for a tool is excellent in wear resistance and chipping resistance for high-speed cutting of hardened steel.

    摘要翻译： 用于工具的硬质烧结体含有25〜47体积％ ％cBN，40〜70体积％ ％，特别是小于45体积。 碳氮化物的总和，Ti的硼化物和2〜20体积％。 总共有硼的百分比和Al的氮化物。 在Ti的碳氮化物中，碳与氮的比例在60:40至30:70的范围内。 在该硬质烧结体中，cBN颗粒通过粘结相相互结合。 得到的工具用硬质烧结体，对于硬化钢的高速切削，具有优异的耐磨性和耐崩裂性。

    Sintered body for high-hardness tools
    8.
    发明授权
    Sintered body for high-hardness tools 失效
    烧结体用于高硬度工具

    公开(公告)号：US5596156A

    公开(公告)日：1997-01-21

    申请号：US529639

    申请日：1995-09-18

    申请人： Tomohiro Fukaya ,  Tetsuo Nakai

    发明人： Tomohiro Fukaya ,  Tetsuo Nakai

    IPC分类号： C22C29/16 ,  B01J3/06 ,  B22F3/14 ,  B22F3/15 ,  C22C1/05 ,  C22C26/00 ,  C22C29/04

    CPC分类号： C22C26/00 ,  B01J3/062 ,  B01J2203/0645 ,  B01J2203/066 ,  B01J2203/0685 ,  C22C2026/005

    摘要： The invention provides a sintered body for high-hardness tools which, when used for cutting work of cast irons where the cutting edge undergoes high temperature and abrupt impact, holds high chip-off and abrasion resistances and exhibits good cutting performance. The sintered body for high-hardness tools is obtained by sintering 60 to 75% by volume of cubic boron nitride powder and remaining part of a binder powder under a superhigh pressure, the binder comprising 5 to 15% by weight of Al, and the remaining part comprising a compound represented by (Hf.sub.X Ti.sub.y M.sub.1-x-y)(C.sub.Z N.sub.1-z).sub..alpha. (where M denotes an element belonging to IVa, Va or VIa group in the periodic table except Ti and Hf, and where 0.1.ltoreq.x.ltoreq.0.5, 0.5.ltoreq.y.ltoreq.0.9, 0.7.ltoreq.z.ltoreq.0.9, and 0.6.ltoreq..alpha..ltoreq.0.8) or a mixture of a plurality of compounds that totally results in the aforementioned composition.

    摘要翻译： 本发明提供一种用于高硬度工具的烧结体，当用于切割边缘经受高温和突然冲击的铸铁的切割工作时，其具有高的切屑和耐磨性，并且具有良好的切削性能。 用于高硬度工具的烧结体通过在超高压下烧结60至75体积％的立方氮化硼粉末和剩余部分粘合剂粉末而获得，粘合剂包含5至15重量％的Al，剩余的 部分包括由（HfX y y 1-xy）（CZN 1-z）α表示的化合物（其中M表示除了Ti和Hf之外的元素周期表中属于IVa，Va或VIa基团的元素，其中0.1 < 0.5,0.5≤y≤0.9,0.7≤z≤0.9,0.6≤α≤0.8）或多个化合物的混合物，其总体上导致上述组成。

    Sintered body for high-accuracy working tools
    9.
    发明授权
    Sintered body for high-accuracy working tools 失效
    用于高精度工作工具的烧结体

    公开(公告)号：US5092920A

    公开(公告)日：1992-03-03

    申请号：US450849

    申请日：1989-12-13

    申请人： Tetsuo Nakai ,  Mitsuhiro Goto ,  Tomohiro Fukaya

    发明人： Tetsuo Nakai ,  Mitsuhiro Goto ,  Tomohiro Fukaya

    IPC分类号： C04B35/583 ,  B01J3/06 ,  C04B35/5831 ,  C22C26/00 ,  C22C29/00 ,  C22C29/02 ,  C22C29/04 ,  C22C29/16

    CPC分类号： B01J3/062 ,  C04B35/5831 ,  C22C26/00 ,  C22C29/02 ,  C22C29/16 ,  B01J2203/0645 ,  B01J2203/066 ,  B01J2203/0685 ,  C22C2026/005

    摘要： A sintered body for high-accuracy working tools is obtained by sintering powder mixture containing at least 45 percent by volume and not more than 60 percent by volume of cubic boron nitride powder having an average particle size of not more than 2 .mu.m and having a remainder formed of binder powder under a superhigh pressure. The binder contains at least 5 percent by weight and not more than 15 percent by weight of Al and at least 2 percent by weight and not more than 20 percent by weight of W, and has a binder remainder formed of a Ti compound or compounds. The atomic ratio of Ti contained in the binder to a transition metal element or elements belonging to any of the groups IVa, Va and/or VIa of the periodic table including Ti is at least 2/3 and not more than 97/100. In the structure of the sintered body, cubic boron nitride crystals are bonded with each other through bonding phases formed by the binder. When at least one or more Ti compounds are selected from a group of TiN.sub.z, Ti(C.sub.1-x N.sub.x).sub.z, (Ti,M) (C.sub.1-x N.sub.x ).sub.z and (Ti,M)N.sub.z, where M represents transition metal element or elements belonging to any of the groups IVa, Va and/or VIa of the periodic table excluding wherein z is within the range 0.45.ltoreq.z.ltoreq.0.65 and x is within the range of 0.50.ltoreq.x

    Hard sintered body for tools
    10.
    发明授权
    Hard sintered body for tools 失效
    用于工具的硬质烧结体

    公开(公告)号：US5041399A

    公开(公告)日：1991-08-20

    申请号：US451441

    申请日：1989-12-13

    申请人： Tomohiro Fukaya ,  Tetsuo Nakai ,  Mitsuhiro Goto

    发明人： Tomohiro Fukaya ,  Tetsuo Nakai ,  Mitsuhiro Goto

    IPC分类号： B01J3/06 ,  C04B35/5831 ,  C22C26/00 ,  C22C29/02 ,  C22C29/04 ,  C22C29/16

    CPC分类号： C04B35/5831 ,  B01J3/062 ,  C22C26/00 ,  C22C29/02 ,  C22C29/04 ,  C22C29/16 ,  B01J2203/0645 ,  B01J2203/066 ,  B01J2203/0685 ,  C22C2026/005

    摘要： A hard sintered body for tools is obtained by sintering under a superhigh pressure, a sinter powder mixture containing at least 20 percent by volume and not more than 70 percent by volume of cubic boron nitride powder and having a remainder formed of a binder powder mixture. The binder contains at least 2 percent by weight and not more than 20 percent by weight of Al and at least 2 percent by weight and not more than 20 percent by weight of W, and has a remainder formed of a Ti compound or compounds. The atomic ratio of Ti contained in the binder to a transition metal element or elements belonging to any of the groups IVa, Va and/or VIa of the periodic table including Ti is at least 2/3 and not more than 97/100. In the structure of the sintered body, cubic boron nitride crystals are bonded with each other through bonding phases formed by the binder. For forming the sintered body, at least one or more Ti compounds are selected from a group of TiN.sub.z, Ti(C,N).sub.z, TiC.sub.z, (Ti,M)N.sub.z, (Ti, M) (C,N).sub.z and (Ti,M)C.sub.z, wherein M represents a transition metal element or elements belonging to any one of the groups IVa, Va and/or VIa of the periodic table excluding Ti, and z is within the range of 0.1.ltoreq.z.ltoreq.0.40. Such a sintered body has an excellent crater wear resistance, so that it can be used for making tool inserts for high-speed cutting of steel or cast iron.