Polycrystalline diamond compact PDC cutter with improved cutting
capability
    82.
    发明授权
    Polycrystalline diamond compact PDC cutter with improved cutting capability 失效
    具有改善切割能力的多晶金刚石紧凑型PDC切割机

    公开(公告)号:US6045440A

    公开(公告)日:2000-04-04

    申请号:US975429

    申请日:1997-11-20

    摘要: The present invention relates to supported polycrystalline diamond compact cutters (PDC cutters) made under high temperature, high pressure (HT/HP) processing conditions, and more particularly to supported PDC cutters having non-planar cutting surfaces. More specifically, the present invention is for an oriented PDC cutter wherein chips and debris are funneled away from the cutting edge by a raised top surface of the polycrystalline diamond layer (PCD layer). The redirection of the debris is achieved by the creation of high and low regions on the PCD layer, of which there can be a variety of different surface geometry's. Thus, an object of the present invention is to provide a PDC cutter with improved performance through channeling debris away from its cutting edge.

    摘要翻译: 本发明涉及在高温高压(HT / HP)加工条件下制成的支撑多晶金刚石紧凑型切割机(PDC切割机),更具体地涉及具有非平面切割表面的支撑PDC切割机。 更具体地说,本发明涉及一种定向PDC切割器,其中芯片和碎屑通过多晶金刚石层(PCD层)的凸起顶表面从切割边缘漏出。 碎片的重定向是通过在PCD层上形成高和低的区域实现的,其中可以有各种不同的表面几何形状。 因此,本发明的目的是提供一种通过将碎屑从其切割边缘引导而提高性能的PDC切割器。

    Method of manufacturing diamond-coated cutting tool inserts
    83.
    发明授权
    Method of manufacturing diamond-coated cutting tool inserts 失效
    金刚石涂层刀具刀片的制造方法

    公开(公告)号:US5643523A

    公开(公告)日:1997-07-01

    申请号:US424025

    申请日:1995-04-18

    摘要: A method of making a diamond-coated insert includes, obtaining a substrate of durable and diamond adherent material having a substantially smooth surface on which is coated a diamond layer using any known CVD technique, and partitioning the diamond covered substrate with a laser beam into multiple inserts with desired geometries. If desired, the insert edges and corners may be thereafter machined or ablated until the desired smoothness and finish are achieved, and a fastening throughbore may be preformed or drilled in the center of each insert. The diamond-coated inserts as formed have a top surface entirely coated by a surface layer of diamond of a first thickness, and at least one rake face which is not diamond-coated beyond the surface layer of diamond.

    摘要翻译: 一种制造金刚石涂层刀片的方法包括:获得具有基本光滑表面的耐用和金刚石粘附材料的基底,其中使用任何已知的CVD技术在其上涂覆金刚石层,并将具有激光束的金刚石覆盖的基底划分成多个 刀片具有所需的几何形状。 如果需要,则可以将刀片边缘和角部加工或烧蚀直到实现所需的平滑度和光洁度,并且可以在每个插入件的中心预成型或钻孔紧固通孔。 形成的金刚石涂层的刀片具有完全由第一厚度的金刚石的表面层涂覆的顶表面,以及至少一个没有被金刚石涂覆在超过金刚石的表面层的前刀面。

    Diamond cutting tool and method of manufacturing the same
    84.
    发明授权
    Diamond cutting tool and method of manufacturing the same 失效
    金刚石切割工具及其制造方法

    公开(公告)号:US5567522A

    公开(公告)日:1996-10-22

    申请号:US318188

    申请日:1994-10-05

    摘要: A diamond cutting tool has a rake face (5) of a cutting edge member (2) consisting essentially of a (111) plane of diamond. The cutting edge member (2) of diamond is vapor-deposited by CVD or the like on an independently prepared base material. In this vapor deposition, the diamond is deposited while controlling and periodically varying the carbon to hydrogen ratio of the supplied raw material gas, in such a manner that a (111) crystal plane is oriented with a prescribed fluctuation or non-uniformity, but is substantially parallel to the base material surface. The as-formed diamond material is separated from the base material and cut into a desired shape, and then bonded as a cutting edge member (2) to a tool base (1) through a metallization layer (4) and a brazing layer (3), in such an orientation that the (111) plane defines the rake face (5). The tool having such a rake face (5) consisting essentially of the (111) plane, with a prescribed fluctuation of its orientation, is excellent in wear resistance and is resistant to cleavage damage.

    摘要翻译: 金刚石切割工具具有基本上由(111)钻石平面组成的切削刃部件(2)的前刀面(5)。 通过CVD等将金刚石的切削刃部件(2)以独立制备的基材气相沉积。 在这种气相沉积中,以(111)晶面以规定的波动或非均匀性取向的方式,控制和周期性地改变供给的原料气体的碳/氢比,沉积金刚石,但是 基本平行于基材表面。 将形成的金刚石材料与基材分离并切割成所需的形状,然后通过金属化层(4)和钎焊层(3)作为切割边缘部件(2)粘合到工具基体(1) ),以(111)面限定前刀面(5)的方向。 具有基本上由(111)面形成的具有规定的取向波动的这样的前刀面(5)的刀具具有优异的耐磨性并且耐裂纹损伤。

    Temperature resistant abrasive polycrystalline diamond bodies
    87.
    发明授权
    Temperature resistant abrasive polycrystalline diamond bodies 失效
    耐温耐磨多晶金刚石体

    公开(公告)号:US4766040A

    公开(公告)日:1988-08-23

    申请号:US66478

    申请日:1987-06-26

    摘要: Temperature resistant abrasive polycrystalline diamond bodies are described, intended for use as tools in various mechanical operations like turning, milling, drilling, sawing and drawing, having different additions, i.e. amount and composition, of binding, fluxing, catalyst metals at different distances from the working surface. Preferably the metal concentration of the polycrystalline diamond body is decreasing towards the working surface while the metal composition is varied in a way that gives a mechanically stiffer matrix that also has a lower thermal expansion.In one embodiment the diamond body is high pressure-high temperature-bonded to a supporting body, e.g. of cemented carbide, in order to facilitate the clamping of the tool. In another embodiment the diamond body is brazed to a supporting body or used in a surface-set rock drill bit, i.e. held by a braze metal. Especially good results have been obtained if the hard polycrystalline diamond body comprises three different homogeneous diamond layers on top of each other, each layer having its special amount and composition of relatively low-melting binding metal. These three diamond layers are bonded to each other and to the supporting body, if any, by using intermediate layers of the thickness 3-300 .mu.m, consisting of more high-melting metals or other materials like nitrides or borides, etc. in order to lock in the low-melting binding metals and to prevent diffusion of these metals between the different diamond layers and between the supporting body and the nearest diamond layer.

    Polycrystalline diamond and CBN cutting tools
    89.
    发明授权
    Polycrystalline diamond and CBN cutting tools 失效
    多晶金刚石和CBN切割工具

    公开(公告)号:US4702649A

    公开(公告)日:1987-10-27

    申请号:US833930

    申请日:1986-02-27

    申请人: Ranga Komanduri

    发明人: Ranga Komanduri

    IPC分类号: B22F7/06 B23B27/14 B23B27/20

    摘要: A cutting tool comprised of an annular polycrystalline layer of diamond or cubic boron nitride integrally adhered to an annular recess in an upper peripheral portion of an integral cemented carbide substrate structure, said layer having a round cutting edge, one face of the layer being adhered to the bottom surface of the recess and an innular annular side of the layer being adhered to the inner wall of the recess, the thickness of the polycrystalline layer and the height of the wall being substantially equivalent.

    摘要翻译: 一种切割工具,包括金刚石或立方氮化硼的环形多晶层,其一体地粘合到整体硬质合金基底结构的上周边部分中的环形凹部,所述层具有圆形切割边缘,该层的一个面被粘附到 凹陷的底表面和该层的一个特殊的环形侧面粘附到凹槽的内壁上,多晶层的厚度和壁的高度基本相等。

    Multiple layer polycrystalline diamond compact
    90.
    发明授权
    Multiple layer polycrystalline diamond compact 失效
    多层多晶金刚石复合体

    公开(公告)号:US4627503A

    公开(公告)日:1986-12-09

    申请号:US522896

    申请日:1983-08-12

    申请人: M. Duane Horton

    发明人: M. Duane Horton

    摘要: A polycrystalline diamond and metal element for use as a cutting element for drilling holes or similar uses. The cutting element comprises a polycrystalline diamond center portion and at least one metal side portion. The metal side portion is made from a soft metal having a Young's Modulus less than approximately 45.times.10.sup.6 psi and is selected from a group comprising cobalt, nickel, iron, copper, silver, gold, platinum, palladium and alloys of these metals and intermetallic compounds containing these metals. Since the metal portion is sufficiently yielding the internal stresses formed in the polycrystalline diamond/metal bond during cooling and subsequent attachment to a tool body are signficantly reduced. The reduction the stress in the polycrystalline diamond/metal bond reduces fracturing in the diamond or metal and delamination of the polycrystalline diamond/metal interface during attachment to the tool and during use.

    摘要翻译: 用作钻孔或类似用途的切割元件的多晶金刚石和金属元件。 切割元件包括多晶金刚石中心部分和至少一个金属侧部分。 金属侧部分由具有小于约45×10 6 psi的杨氏模量的软金属制成,并且选自包括钴,镍,铁,铜,银,金,铂,钯以及这些金属和金属间化合物的合金的组 这些金属。 由于金属部分充分屈服,所以在冷却期间形成的多晶金刚石/金属粘结中的内应力随后附着到工具体上显着降低。 多晶金刚石/金属粘结层中的应力减小可以减少金刚石或金属中的断裂,并在连接工具和使用过程中多晶金刚石/金属界面的分层。