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公开(公告)号：US4256351A
公开(公告)日：1981-03-17
申请号：US963630
申请日：1978-11-24
CPC分类号： E21B10/25 , F16J15/3208
摘要： A sealing system acts as a barrier to the drilling fluid, pulverized cuttings and other materials in the borehole preventing the materials from entering the bearing area of an earth boring bit and retains lubricant inside the bearing area. At least one bearing pin extends from the body of an earth boring bit and a rolling cone cutter is mounted on the bearing pin. A seal assembly is located in the mouth of the cutter between the cutter and the bearing pin. The seal assembly includes an annular rigid ring, an elastomeric ring and a deformable ring means mounted to rotate with said rolling cone cutter. The elastomeric ring is attached to the annular rigid ring. The elastomeric ring has a lip with a wiping surface that contacts the bearing pin. The deformable ring means is connected to the lip and maintains contact between the wiping surface and the bearing pin.
摘要翻译： 密封系统作为钻井液，粉碎的切屑和钻孔中的其他材料的屏障，防止材料进入钻孔的轴承区域，并将润滑剂保留在轴承区域内。 至少有一个轴承销从地镗头的主体延伸出来，滚动圆锥切割器安装在轴承销上。 密封组件位于切割器和轴承销之间的切割器口部。 密封组件包括环形刚性环，弹性体环和安装成与所述滚动圆锥切割器一起旋转的可变形环形装置。 弹性体环附接到环形刚性环。 弹性体环具有唇部，其具有与轴承销接触的擦拭表面。 可变形环装置连接到唇缘并保持擦拭表面和支承销之间的接触。
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公开(公告)号：US5755298A
公开(公告)日：1998-05-26
申请号：US818468
申请日：1997-03-12
IPC分类号： B23K9/04 , B23K35/02 , B23K35/32 , B23K35/368 , B24D3/06 , C22C26/00 , C22C29/08 , E21B10/46 , E21B10/50
CPC分类号： B23K35/327 , B23K35/0266 , B24D3/06 , E21B10/46 , E21B10/50 , Y10T428/1209
摘要： Hardfacing to protect wear surfaces of drill bits and other downhole tools having coated diamond particles dispersed within and bonded to a metallic matrix deposit. The coating on the diamond particles may be formed from materials and alloys such as particles, tungsten carbide, and tungsten carbide/cobalt and cermets such as metal carbides and metal nitrides. The coated diamond particles are preferably sintered and have a generally spherical shape. The coated diamond particles are pre-mixed with selected materials such that welding and cooling will form both a metallurgical bond and a mechanical bond within the solidified metallic matrix deposit. A welding rod is prepared by placing a mixture of coated diamond particles, hard particles such as tungsten carbide/cobalt, and loose filler material into a steel tube. A substrate is hardfaced by progressively melting the welding rod onto a selected surface of the substrate and allowing the melted material to solidify, forming the desired hardfacing with coated diamond particles dispersed therein on the substrate surface.
摘要翻译： 表面硬化以保护具有分散在金属基质沉积物中并与金属基质沉积物结合的涂覆金刚石颗粒的钻头和其它井下工具的磨损表面。 金刚石颗粒上的涂层可以由诸如颗粒，碳化钨，碳化钨/钴和金属陶瓷如金属碳化物和金属氮化物的材料和合金形成。 涂覆的金刚石颗粒优选是烧结的并且具有大致球形的形状。 涂覆的金刚石颗粒与选定的材料预混合，使得焊接和冷却将在固化的金属基质沉积物内形成冶金结合和机械结合。 通过将涂覆的金刚石颗粒，硬质颗粒如碳化钨/钴和松散的填充材料的混合物放置在钢管中来制备焊条。 通过将焊条逐渐熔化到衬底的选定表面上并允许熔融的材料固化，形成期望的硬化面，其中分散在其中的涂覆的金刚石颗粒在衬底表面上，使衬底硬化。
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公开(公告)号：US4722405A
公开(公告)日：1988-02-02
申请号：US914205
申请日：1986-10-01
IPC分类号： E21B10/52 , E21B10/56 , E21B10/567
CPC分类号： E21B10/5676 , E21B10/52 , Y10S76/11
摘要： A composite sintered rock bit insert for use in a rolling cutter is fabricated from two tungsten carbide components. The first component is formed of a tungsten carbide composite that is less wear resistant, but tougher, than the second component. The two components are joined at a parting plane which extends to an earth-engaging surface of the insert. The insert is mounted on a rolling cutter such that the component having the lower wear resistant properties is on the leading face of the insert. With this combination, the wear pattern of the insert maintains a crest-like configuration at its rock engaging surface.
摘要翻译： 用于轧制切割机的复合烧结岩石钻头刀片由两个碳化钨部件制成。 第一部件由碳化钨复合材料形成，该碳化钨复合材料比第二部件具有更少的耐磨性，但更坚韧。 两个部件在分离平面处连接，该分型平面延伸到插入件的接地表面。 插入件安装在滚动切割器上，使得具有较低耐磨性能的部件位于插入件的前表面上。 通过这种组合，插入件的磨损图案在其岩石接合表面处保持峰形状。
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公开(公告)号：US4934467A
公开(公告)日：1990-06-19
申请号：US279523
申请日：1988-12-02
CPC分类号： E21B10/25 , F16J15/32 , F16J15/3256
摘要： An improved drill bit seal arrangement, including a seal ring having a boronized outer annular surface which is fabricated separate and apart from the journal bearing structure of the drill bit arm. The seal ring boronized surface is polished to define a smooth non-abrading surface for the elastomeric seal. The seal arrangement enhances the wear resistance of the seal between the drill bit arm and the cutting cone, thereby increasing the life span of the drill bit.
摘要翻译： 一种改进的钻头密封装置，包括具有硼化的外部环形表面的密封环，该环形表面与钻头臂的轴颈轴承结构分开并分开。 密封环硼化表面被抛光以限定用于弹性体密封件的光滑的非研磨表面。 密封装置增强了钻头臂和切割锥体之间的密封的耐磨性，从而增加了钻头的使用寿命。
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公开(公告)号：US4397361A
公开(公告)日：1983-08-09
申请号：US269285
申请日：1981-06-01
IPC分类号： E21B10/56 , E21B10/567 , E21B12/04
CPC分类号： E21B10/567 , E21B12/04
摘要： A rotary drill bit for drilling earth formations is disclosed having a plurality of cutting elements mounted on the head portion of the bit. The bit further includes a plurality of individual protrusions projecting from the head portion more than the extension of the cutting elements. The protrusions are fabricated of a metal more readily abraded by the earth formation than any of the cutting elements. The protrusions protect the cutting elements during handling of the bit and entry of the bit into a borehole; and, the protectors are abraded away to expose the cutting elements during drilling.
摘要翻译： 公开了一种用于钻探地层的旋转钻头，其具有安装在钻头的头部上的多个切割元件。 所述钻头还包括从所述头部部分突出地突出于所述切割元件的延伸部分的多个单独突出部。 突起由比地球形成的更容易磨损的金属制成，而不是任何切割元件。 这些突起在处理钻头并钻入井眼时保护切割元件; 并且在钻孔期间，保护器被磨损以露出切割元件。
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公开(公告)号：US5755299A
公开(公告)日：1998-05-26
申请号：US579454
申请日：1995-12-27
IPC分类号： B23K9/04 , B23K35/02 , B23K35/32 , B23K35/368 , B24D3/06 , C22C26/00 , C22C29/08 , E21B10/46 , E21B10/50 , B34D3/02
CPC分类号： B23K35/327 , B23K35/0266 , B24D3/06 , E21B10/46 , E21B10/50 , Y10T428/1209
摘要： Hardfacing to protect wear surfaces of drill bits and other downhole tools having coated diamond particles dispersed within and bonded to a metallic matrix deposit. The coating on the diamond particles may be formed from materials and alloys such as particles, tungsten carbide, and tungsten carbide/cobalt and cermets such as metal carbides and metal nitrides. The coated diamond particles are preferably sintered and have a generally spherical shape. The coated diamond particles are premixed with selected materials such that welding and cooling will form both a metallurgical bond and a mechanical bond within the solidified metallic matrix deposit. A welding rod is prepared by placing a mixture of coated diamond particles, hard particles such as tungsten carbide/cobalt, and loose filler material into a steel tube. A substrate is hardfaced by progressively melting the welding rod onto a selected surface of the substrate and allowing the melted material to solidify, forming the desired hardfacing with coated diamond particles dispersed therein on the substrate surface.
摘要翻译： 表面硬化以保护具有分散在金属基质沉积物中并与金属基质沉积物结合的涂覆金刚石颗粒的钻头和其它井下工具的磨损表面。 金刚石颗粒上的涂层可以由诸如颗粒，碳化钨，碳化钨/钴和金属陶瓷如金属碳化物和金属氮化物的材料和合金形成。 涂覆的金刚石颗粒优选是烧结的并且具有大致球形的形状。 涂覆的金刚石颗粒与选定的材料预混合，使得焊接和冷却将在固化的金属基质沉积物内形成冶金结合和机械键。 通过将涂覆的金刚石颗粒，硬质颗粒如碳化钨/钴和松散的填充材料的混合物放置在钢管中来制备焊条。 通过将焊条逐渐熔化到衬底的选定表面上并允许熔融的材料固化，形成期望的硬化面，其中分散在其中的涂覆的金刚石颗粒在衬底表面上，使衬底硬化。
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7.发明授权Roller drill bit having radial-thrust pilot bushing incorporating anti-galling material 失效滚子钻头具有包含防磨损材料的径向推力先导衬套
公开(公告)号：US4875532A
公开(公告)日：1989-10-24
申请号：US246513
申请日：1988-09-19
IPC分类号： E21B10/22
CPC分类号： E21B10/22 , F16C33/121 , F16C21/00 , F16C2352/00
摘要： A rolling cutter earth drilling bit in which integral one-piece pilot bushings provide both radial and thrust load sliding surfaces which incorporate an anti-galling material. A roller cone bit has three downwardly extending arm members which terminate in cylindrical spindles for the rolling cutters. Each spindle has a stepped configuration providing an enlarged journal section which is stepped down to provide an annular thrust shoulder and a reduced pilot pin which projects from the thrust shoulder. The rolling cutter mounted on the spindle has an enlarged rearward bearing recess which receives the journal section of the spindle and a reduced forward bearing recess which receives the spindle pilot pin. An annular thrust face corresponding generally to the spindle shoulder is between the recesses. The pilot bushing has a sleeve portion extending into the reduced forward recess of the rolling cutter in an interference fit and an integral annular rim portion extending outwardly from the sleeve portion over the thrust face. The outer surface of the rim portion contacts the annular spindle shoulder in a thrust load relationship, and the inner surface of the sleeve portion receives the pilot pin in a radial load relationship. These surfaces incorporate an anti-galling material.
摘要翻译： 一种滚动式挖土机钻头，其中一体式单件先导衬套提供包括防磨损材料的径向和推力负载滑动表面。 滚子锥头具有三个向下延伸的臂构件，其终止于滚动切割器的圆柱形主轴中。 每个主轴具有台阶形状，提供扩大的轴颈部分，该轴颈部分被逐步降低以提供环形推力肩部和从推力肩部突出的减小的导向销。 安装在主轴上的滚动刀具具有扩大的向后轴承凹槽，该凹槽容纳主轴的轴颈部分，以及容纳主轴引导销的减小的前轴承凹部。 通常与主轴肩对应的环形推力面位于凹部之间。 导向衬套具有套筒部分，其以过盈配合延伸到滚动切割器的减小的前凹部中，并且在推力面上从套筒部分向外延伸的整体环形边缘部分。 轮辋部分的外表面以推力负载关系接触环形主轴肩部，并且套筒部分的内表面以径向载荷关系接收导向销。 这些表面包含防磨损材料。
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公开(公告)号：US4058177A
公开(公告)日：1977-11-15
申请号：US775226
申请日：1977-03-07
摘要： An asymmetric gage row insert provides a larger amount of wall contacting surface thereby decreasing the wear on the gage insert and increasing the ability of the earth boring apparatus to maintain a full gage hole. The insert has a shape prior to assembly onto the earth boring apparatus that includes a base integrally joined to an asymmetric head. The base is mounted in a socket in the earth boring apparatus. The head projects from the earth boring apparatus and includes an extended gage cutting surface. The gage cutting surface is the largest plane surface on the head. The gage cutting surface contacts the wall of the hole with the majority of the length of its extended surface and with the same angle as the gage angle of the bit.
摘要翻译： 不对称量具行插件提供更大量的壁接触表面，从而减小计量插入件上的磨损，并增加镗孔设备保持完整的测量孔的能力。 插入件在组装到钻孔设备之前具有形状，其包括与非对称头部整体连接的基座。 基座安装在钻孔设备的插座中。 头部从钻孔设备突出，并包括扩展的切口表面。 量具切割表面是头部上最大的平面。 量规切割表面以其延伸表面的大部分长度与钻头的量具角度相同的角度接触孔的壁。
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