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公开(公告)号：US4769070A
公开(公告)日：1988-09-06
申请号：US91953
申请日：1987-09-01
申请人： Masaaki Tobioka , Yasuhiro Shimizu , Kazutaka Isobe , Nobuyuki Kitagawa , Toshio Nomura , Kunihiro Takahashi
发明人： Masaaki Tobioka , Yasuhiro Shimizu , Kazutaka Isobe , Nobuyuki Kitagawa , Toshio Nomura , Kunihiro Takahashi
摘要： High hardness and high toughness nitrogen-containing sintered hard alloys or cermets useful for cutting tools, in particular, high speed cutting are provided which comprises a hard dispersed phase consisting essentially of a mixed carbonitride of titanium and at least one element selected from the group consisting of Group IVa, Va, and VIa elements of Periodic Table, except titanium, and a binder metal phase consisting essentially of at least one metal selected from the group consisting of nickel and cobalt, and unavoidable impurities, the hard dispersed phase having previously been subjected to a solid solution forming treatment at a temperature of at least the sintering temperature before sintering.
摘要翻译： 提供了可用于切割工具，特别是高速切割的高硬度和高韧性的含氮烧结硬质合金或金属陶瓷，其包括基本上由钛组成的混合碳氮化物和至少一种选自以下的元素组成的硬分散相： 元素周期表第Ⅳa，Ⅴa和Ⅵa族元素，钛除外，以及基本上由至少一种选自镍和钴的金属和不可避免的杂质组成的粘合剂金属相，硬分散相已经被 在烧结前的至少烧结温度的温度下进行固溶处理。
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公开(公告)号：US5577424A
公开(公告)日：1996-11-26
申请号：US313222
申请日：1995-03-28
CPC分类号： C22C29/02 , C22C29/04 , B22F2998/00
摘要： A nitrogen-containing sintered hard alloy in which the content of the binder phase is at the highest level in an area to a depth of between 3 .mu.m and 500 .mu.m from its surface and its content in this area is between 1.1 and 4 times the average content of the binder phase in the entire alloy. Below this area, the content of the binder phase decreases gradually so that its content becomes equal to the average content of the binder phase at a depth of 800 .mu.m or less. The content of the binder phase in the surface layer is 90% or less of its maximum value. The depth of 800 .mu.m is a value at which the thermal conductivity is kept sufficiently high and at the same time a tool can keep high resistance to plastic deformation during cutting.
摘要翻译： PCT No.PCT / JP94 / 00158 Sec。 371日期：1995年3月28日 102（e）1995年3月28日PCT PCT 1994年2月3日PCT公布。 WO94 / 18351 PCT出版物 日期1994年8月18日一种含氮烧结硬质合金，其中粘结相的含量在其表面的深度在3μm至500μm之间的区域中处于最高水平，其在该区域的含量为 在整个合金中的粘结相的平均含量的1.1至4倍。 在该区域之下，粘结相的含量逐渐减少，使得其含量等于800μm或更小深度的粘结相的平均含量。 表层中的粘结相的含量为其最大值的90％以下。 800μm的深度是热传导率保持足够高的值，同时刀具能够在切割过程中保持高的塑性变形性。
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公开(公告)号：US5228812A
公开(公告)日：1993-07-20
申请号：US743427
申请日：1991-08-22
CPC分类号： B23B51/0009 , B23B27/141 , B23B51/02 , B23B51/048 , B23B2200/081 , B23B2205/02 , B23B2251/02 , B23B2251/48 , B23B2251/50 , Y10S408/713 , Y10S408/714 , Y10T407/27 , Y10T408/78 , Y10T408/901
摘要： A throw-away tipped drill has an insert removably connected to a shank for cutting a workpiece. The insert (31) and the shank (32) have mutually engaging surfaces respectively, and a slit (34, 39) is formed either in the insert (31) or in the shank (32) for mounting the insert to the shank, whereby the insert (31) is fixed to the shank (32) by an elastic force which is caused by an elastic deformation upon mutual movement of opposite surfaces of this slit (34, 39) in engagement of the insert (31) and the shank (32). Therefore, the insert (31) and the shank (32) are coupled by simple press fitting without any requirement for a screw or other connection, whereby the assembly is improved. The cutting edge of the insert (31) has an excellent wear resistance, adhesion resistance and thermal cracking resistance and the shank (32) has an excellent toughness while the drill is relatively low in costs, by employing surface-coated cemented carbide as the material for the insert while employing steel as the material for the shank.
摘要翻译： PCT No.PCT / JP90 / 01670 Sec。 371日期1991年8月22日 102（e）日期1991年8月22日PCT 1990年12月21日PCT PCT。 出版物WO90 / 09698 日期1991年7月11日。抛弃钻头具有可拆卸地连接到柄上用于切割工件的刀片。 插入件（31）和柄（32）分别具有相互接合的表面，并且在插入件（31）中或在柄（32）中形成狭缝（34,39），用于将插入件安装到柄部，由此 插入件（31）通过弹性力固定在柄（32）上，该弹力在插入件（31）和柄部（31）的啮合中由该狭缝（34,39）相对的相对表面相互运动引起的弹性变形 32）。 因此，插入件（31）和柄（32）通过简单的压配合而联接，而不需要螺钉或其它连接，从而改进了组件。 插入件（31）的切削刃具有优异的耐磨性，耐粘附性和耐热龟裂性，并且当钻头成本相对较低时，柄（32）具有优异的韧性，通过使用表面涂覆的硬质合金作为材料 对于插入物，同时使用钢作为柄的材料。
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公开(公告)号：US4971485A
公开(公告)日：1990-11-20
申请号：US470083
申请日：1990-01-25
申请人： Toshio Nomura , Nobuyuki Kitagawa , Kazutaka Isobe
发明人： Toshio Nomura , Nobuyuki Kitagawa , Kazutaka Isobe
CPC分类号： C22C29/06 , B23B51/02 , C22C29/04 , B22F2998/00 , B23B2224/20 , B23B2224/28 , B23B2224/32 , B23B2224/36 , B23B2251/18 , Y10S76/11 , Y10T407/27 , Y10T408/78
摘要： A drill is formed by a hard dispersed phase of WC and a B-1 type solid solution, and a bond metal phase of an iron family metal. The composition of the hard dispersed phase is expressed as (W.sub.a M.sub.b) (C.sub.x N.sub.y), where M represents Ti, or two or more metals, including Ti but excluding W, selected from the group IVa, Va and VIa of the periodic table, and a, b, x and y represents molar fractions which are defined by relational expressions of a+b=1, x+y=1, x>0, y.gtoreq.0 and b.gtoreq.0.4. The bond metal phase occupies at least 13 volume percent and not more than 30 volume percent of the cemented carbide.
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公开(公告)号：US6057046A
公开(公告)日：2000-05-02
申请号：US709176
申请日：1996-09-06
CPC分类号： C22C1/051 , B22F7/02 , C22C29/02 , B22F2998/00 , B22F2999/00 , Y10T428/12049 , Y10T428/1209
摘要： A nitrogen-containing sintered alloy includes at least 75 and not more than 95 percent by weight of a hard phase containing Ti, a group 6A metal and WC in a prescribed composition, and at least 5 and not more than 25 percent by weight of a binder phase containing Ni, Co and unavoidable impurities. The alloy contains at least 5 and not more than 60 percent by weight of a carbide, nitride or carbonitride of Ti, and at least 30 and not more than 70 percent by weight of a carbide of a metal belonging to the group 6A of the periodic table. The atomic ratio of nitrogen/(carbon+nitrogen) in the hard phase is at least 0.2 and less than 0.5. The alloy includes a soft layer containing a binder phase metal and WC at its outermost surface, and includes a layer that hardly contains any of the hard phase containing WC in a region immediately under the soft layer, with a thickness of at least 3 .mu.m and not more than 30 .mu.m. A nitrogen-containing sintered alloy with such a composition can be employed as a cutting tool having a high reliability even without a surface coating and even for working under conditions causing strong thermal shock.
摘要翻译： 含氮烧结合金包含至少75重量％且不大于95重量％的含有规定组成的Ti，6A族金属和WC的硬质相和至少5重量％且不超过25重量％ 粘结相含有Ni，Co和不可避免的杂质。 该合金含有至少5重量％且不超过60重量％的Ti的碳化物，氮化物或碳氮化物，以及至少30重量％且不超过70重量％的属于周期性的6A族的金属的碳化物 表。 硬质相中氮/（碳+氮）的原子比为至少0.2且小于0.5。 该合金包括在其最外表面含有粘结相金属和WC的软层，并且包括在软质层正下方的区域中几乎不含任何含硬质相WC的层，其厚度至少为3μm 不超过30亩。 具有这种组成的含氮烧结合金可以用作即使没有表面涂层也具有高可靠性甚至在引起强烈热冲击的条件下工作的切削工具。
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公开(公告)号：US5939651A
公开(公告)日：1999-08-17
申请号：US60556
申请日：1998-04-15
申请人： Kazutaka Isobe , Nobuyuki Kitagawa , Isao Yamazaki
发明人： Kazutaka Isobe , Nobuyuki Kitagawa , Isao Yamazaki
CPC分类号： C22C29/10 , C22C29/00 , B22F2998/00
摘要： A titanium carbonitride-based alloy which is excellent in chipping resistance and wear resistance is disclosed. A hard phase is a carbide (TiMC), a nitride (TiMN) or a carbonitride (TiMCN) of Ti and at least one metal (M), other than Ti, selected from those belonging to the groups IVa, Va and VIa of the periodic table. A binder phase contains Co and Ni as main components. When the structure of the titanium-based alloy is observed with a scanning electron microscope, particles forming the hard phase in the alloy have black core parts which are located on core portions to appear black and peripheral parts which are located around the black core parts to appear gray. Assuming that A and B represent particles having the black core parts occupying areas of at least 30% of the overall particles A and those having the black core parts occupying areas of not more than 30% of the overall particles B respectively, the area ratio of the particles A to the particles B satisfies a condition of 0.3.ltoreq.A/(A+B).ltoreq.0.8.
摘要翻译： 公开了一种耐崩裂性和耐磨性优异的碳氮化钛系合金。 硬质相是选自Ti中的TiA族，Ⅴa族和Ⅵa族的Ti（Ti）以及除Ti以外的至少一种金属（M）的碳化物（TiMC），氮化物（TiMN）或碳氮化物（TiMCN） 周期表。 粘结相包含Co和Ni作为主要成分。 当用扫描电子显微镜观察钛基合金的结构时，合金中形成硬质相的颗粒具有位于芯部分上的黑色芯部分，以出现位于黑色芯部周围的黑色和周边部分， 出现灰色 假设A和B表示具有占整个颗粒A的至少30％的黑色核心部分的颗粒和具有黑色芯部分占据总体颗粒B的不超过30％的面积的颗粒，则面积比 粒子A的粒子A满足0.3≤A/（A + B）≤0.8的条件。
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公开(公告)号：US5403374A
公开(公告)日：1995-04-04
申请号：US889859
申请日：1992-05-28
IPC分类号： A44C5/00 , A44C5/02 , A44C5/10 , B22F3/22 , B22F5/10 , C22C1/04 , C22C1/05 , C22C29/02 , G04B37/22 , C22C29/04 , B22F1/00
CPC分类号： B22F3/225 , B22F3/22 , C22C29/02 , G04B37/221 , B22F2998/00
摘要： A watch exterior part is formed of cemented carbide or stellite alloy, and has a three-dimensionally curved as-sintered surface or a small hole with an as-sintered interior peripheral surface, or has a three-dimensionally curved polished surface obtained by polishing an as-sintered surface. The watch exterior part is manufactured by a method in which organic binder is milled into a material powder, and a molded body obtained by injection molding is subjected to a binder removing process and then sintered. By the manufacturing method, a watch exterior part formed of cemented carbide or stellite alloy has a high strength and a complicated configuration such as a three-dimensional curved surface and a small hole, without applying secondary machining operations such as discharge operations.
摘要翻译： 手表外部部件由硬质合金或钨铬钴合金形成，并且具有三维弯曲的烧结表面或具有烧结内周面的小孔，或具有通过抛光获得的三维弯曲抛光表面 烧结表面。 手表外部部件通过将有机粘合剂研磨成材料粉末的方法制造，并通过注射成型获得的成型体进行粘合剂除去工序，然后烧结。 通过该制造方法，由硬质合金或钨铬钴合金形成的手表外部部件具有高强度和复杂的构造，例如三维曲面和小孔，而不需要诸如放电操作的二次加工操作。
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公开(公告)号：US5403373A
公开(公告)日：1995-04-04
申请号：US889854
申请日：1992-05-28
申请人： Nobuyuki Kitagawa , Toshio Nomura
发明人： Nobuyuki Kitagawa , Toshio Nomura
CPC分类号： B22F3/225 , B22F3/22 , C22C1/05 , B22F2998/00
摘要： A hard sintered component of a cemented carbide or a stellite alloy having a complex three-dimensional shape and a small hole or the like and the high strength originally provided by the used material for making the component without any secondary working, is formed by injection molding a compact molding die having an inner mold surface roughness R.sub.max of not more than 3 .mu.m. Where a core pin is used the outer surface of the pin has a surface roughness R.sub.max of not more than 3 .mu.m. The compact is then sintered. The hard sintered component is composed of a cemented carbide or a stellite alloy. In such a hard sintered component, the surface of a complex three-dimensional shape such as a disc portion or a thin portion, or the inner surface of a small hole, is defined by a sintered surface which has a surface roughness R.sub.max of not more than 4 .mu.m.
摘要翻译： 通过注射成型形成具有复杂的三维形状和小孔等的硬质合金或司太立八金合金的硬质烧结组分，以及原料由用于制造该组分而不进行二次加工的材料提供的高强度 具有内模表面粗糙度Rmax不大于3μm的紧凑型成型模具。 在使用芯销的情况下，销的外表面的表面粗糙度Rmax不大于3μm。 然后将该压块烧结。 硬质烧结组分由硬质合金或钨铬钴合金构成。 在这样的硬质烧结部件中，由表面粗糙度Rmax不大的烧结面来限定诸如圆盘部分或薄壁部分或小孔的内表面的复杂三维形状的表面 超过4亩。
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公开(公告)号：US5624766A
公开(公告)日：1997-04-29
申请号：US397289
申请日：1995-03-13
申请人： Hideki Moriguchi , Nobuyuki Kitagawa , Toshio Nomura , Mitsunori Kobayashi , Katsuya Uchino , Kazuo Yamagata
发明人： Hideki Moriguchi , Nobuyuki Kitagawa , Toshio Nomura , Mitsunori Kobayashi , Katsuya Uchino , Kazuo Yamagata
CPC分类号： C22C29/08 , C23C30/005 , Y10T407/27 , Y10T428/12021 , Y10T428/12028 , Y10T428/12056
摘要： A coated cemented carbide comprising: a substrate comprising a WC-based cemented carbide containing 4 to 10 wt. % of Co as a binder phase; based on a ratio in a mirror-polished texture of a cross section of the cemented carbide, 70% or more of WC crystals as a hard phase being classified into either of a group of fine particles A having a particle size of from 0.1 to 1 .mu.m and a group of coarse particles B having a particle size of from 3 to 10 .mu.m, the area ratio S.sub.A /S.sub.B of the fine particles A to the coarse particles B being in a range of from 0.22 to 0.45; and a coating layer disposed on a surface of the cemented carbide and having a total thickness in a range of from 5 to 100 .mu.m. The coating layer comprises at least one layer comprising at least one selected from the group consisting of: carbides, nitrides, carbonitrides, oxycarbides, and boronitrides of Ti, Zr, and/or Hf; and at least one layer comprising at least one selected from the group consisting of: Al.sub.2 O.sub.3 and oxides of Ti, Zr, or Hf.
摘要翻译： PCT No.PCT / JP94 / 00596 Sec。 371日期1995年3月13日 102（e）1995年3月13日PCT PCT 1994年4月8日PCT公布。 出版物WO95 / 05497 日期：1995年2月23日涂覆硬质合金，包括：包含含有4〜10重量％ Co作为粘合剂相的％; 基于硬质合金横截面的镜面抛光织构的比例，作为硬相的70％以上的WC晶体被分类为粒径为0.1〜1的微粒A的一组 和一组粒径为3〜10μm的粗粒子B，微粒A与粗粒子B的面积比SA / SB在0.22〜0.45的范围内; 以及设置在硬质合金的表面上并具有5-100μm的总厚度的涂层。 涂层包括至少一层，其包含选自Ti，Zr和/或Hf的碳化物，氮化物，碳氮化物，碳氧化物和硼氮化物中的至少一种; 以及包含至少一种选自Al 2 O 3和Ti，Zr或Hf的氧化物中的至少一种的层。
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公开(公告)号：US5603071A
公开(公告)日：1997-02-11
申请号：US416485
申请日：1995-04-04
申请人： Nobuyuki Kitagawa , Toshio Nomura
发明人： Nobuyuki Kitagawa , Toshio Nomura
CPC分类号： B22F3/225 , B22F3/1021 , B22F3/22 , B22F2998/00
摘要： Disclosed is a method of preparing a cemented carbide or a cermet alloy by mixing and kneading cemented carbide powder or cermet alloy powder with an organic binder, shaping this mixed powder into a prescribed configuration by an injection molding method and thereafter removing the organic binder from this compact and sintering the same, in order to obtain a dense alloy. Removal of the organic binder is performed in a first step in an inert gas atmosphere as a first removal step, and then continued in a second step in a vacuum of not more than 1 Torr. In the first removal step, the pressure is held in excess of the atmospheric pressure, to prevent the formation of imperfections in the compact. After continuous pores are formed in the interior of the compact, the atmosphere pressure is brought close to a vacuum, thereby facilitating the evaporation of gas from the surface and desorption of gas generated in the interior of the compact.
摘要翻译： 公开了通过将硬质合金粉末或金属陶瓷合金粉末与有机粘合剂混合和捏合来制备硬质合金或金属陶瓷合金的方法，通过注塑法将该混合粉末成形为规定的构型，然后从其中除去有机粘合剂 压实和烧结相同，以获得致密的合金。 作为第一除去步骤，在惰性气体气氛中的第一步骤中除去有机粘合剂，然后在不大于1托的真空中继续第二步。 在第一去除步骤中，压力保持超过大气压力，以防止在压块中形成缺陷。 在压块的内部形成连续的孔后，使气氛接近真空，从而促进气体从表面的蒸发和在压实体的内部产生的气体的解吸。
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