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首页> 外国专利> Super-hard bits, super-hard tips for same, tools comprising same and methods for making same

Super-hard bits, super-hard tips for same, tools comprising same and methods for making same

机译：超硬钻头，用于超硬钻头的超硬刀头，包括其的工具及其制造方法

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摘要

A super-hard (PCD) bit for a tool, having a super-hard volume 102, substrate 112 and support body 120, where the super-hard volume is sinter-joined to a distal end of the substrate and a proximal end 117 of the substrate joined to the support body. A substrate side 113 connects the proximal and distal ends of the substrate, and where the proximal and distal ends of the substrate each having a respective proximal 113 and distal 101 peripheral edge. The proximal and distal peripheral edges define a respective proximal and distal circumscribing circle in which the substrate side includes a divergent area that diverges from the distal end towards the proximal end. The substrate is such that the diameter D2 of the proximal circumscribing circle is greater than the diameter D2 of the distal circumscribing circle. In an alternative embodiment a method of making super-hard tip involves forming a precursor aggregation having super-hard material grains against the distal end to form a pre-sinter assembly and having a density of at least 60% the density of the super-hard material. The pre-sinter assembly is placed in a capsule for an ultra-high pressure, high temperature (HPHT) press and subjected to an HPHT condition.
机译：一种用于工具的超硬（PCD）钻头，具有超硬体积102，基底112和支撑体120，其中，超硬体积烧结结合到基底的远端和基底的近端117。衬底连接到支撑体。衬底侧113连接衬底的近端和远端，并且其中衬底的近端和远端均具有各自的近端113和远端101外围边缘。近侧和远侧外围边缘限定相应的近侧和远侧外接圆，其中衬底侧包括从远端朝向近端发散的发散区域。基底使得近端外接圆的直径D2大于远端外接圆的直径D2。在替代实施例中，一种制造超硬尖端的方法包括：形成具有前部聚集体的前驱体聚集体，该前驱体聚集体在远端具有超硬材料晶粒，以形成预烧结组件，并且其密度为超硬尖端的密度的至少60％。材料。将预烧结组件放置在胶囊中以进行超高压，高温（HPHT）压机，并使其处于HPHT条件。

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