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1. 发明授权

US08397841B1 Drill bit with cutting elements having functionally engineered wear surface 有权
标题翻译：钻头采用具有功能磨损表面的切割元件
公开(公告)号：US08397841B1
公开(公告)日：2013-03-19
申请号：US11768846
申请日：2007-06-26
申请人： Anthony Griffo , Ahigang Fang , Robert Denton
发明人： Anthony Griffo , Ahigang Fang , Robert Denton
IPC分类号： E21B10/36 , E21B10/46 , E21B10/567 , E21B10/573
CPC分类号： B22F7/06 , B22F2005/001 , B22F2999/00 , B33Y80/00 , C23C30/005 , E21B10/52 , Y10T428/2993 , B22F3/22
摘要： Drill bits and cutting elements having a functionally-engineered surface comprise a cermet material selected from the group consisting of refractory metal carbides, nitrides, borides, carbonitrides and mixtures thereof. A functionally-engineered material is disposed over a surface portion one of the cutting elements to form a wear resistant surface thereon having a hardness that is different than that of the underlying cutting element. The wear resistant surface is provided by forming a conformable material mixture by combining one or more powders selected from the group consisting of cermets, carbides, borides, nitrides, carbonitrides, refractory metals, diamond particles, cubic boron nitride particles, Co, Fe, Ni, and combinations thereof, with an applying agent. The applied material mixture is pressurized under conditions of elevated temperature to consolidate and sinter the material mixture, thereby forming the wear resistant surface having desired properties of hardness and/or fracture toughness.
摘要翻译：具有功能改性表面的钻头和切割元件包括选自难熔金属碳化物，氮化物，硼化物，碳氮化物及其混合物的金属陶瓷材料。功能上设计的材料设置在切割元件之一的表面部分上，以形成其上具有与下面的切割元件的硬度不同的硬度的耐磨表面。耐磨表面通过组合一种或多种选自金属陶瓷，碳化物，硼化物，氮化物，碳氮化物，难熔金属，金刚石颗粒，立方氮化硼颗粒，Co，Fe，Ni ，及其组合。将所施加的材料混合物在高温条件下加压，以固化和烧结材料混合物，从而形成具有所需硬度和/或断裂韧性性能的耐磨表面。

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