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1.发明公开
公开(公告)号：EP2122000A1
公开(公告)日：2009-11-25
申请号：EP08725891.9
申请日：2008-02-21
发明人： McCLAIN, Eric, E. , SCOTT, Dan, E. , FULLER, Wesley, Dean , WELCH, Robert, M. , EASON, Jimmy, W. , SKEEM, Marcus, R. , BRACKIN, Van, J.
CPC分类号： C22C26/00 , B22F2005/001 , B22F2998/00 , C22C1/101 , C22C1/1036 , E21B10/46 , B22F1/02 , B22F1/025 , C22C1/05
摘要： A method of constructing an earth-boring, diamond-impregnated drill bit has a first step of coating diamond grit with tungsten to create tungsten-coated diamond particles. These coated particles are then encapsulated in a layer of carbide powder held by an organic green binder material. The encapsulated granules are then mixed along with a matrix material and placed in a mold. The matrix material includes a matrix binder and abrasive particles. The mixture is heated in the mold at atmospheric pressure to cause the matrix binder to melt and infiltrate the encapsulated granules and abrasive particles.
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2.发明公开ENCAPSULATED DIAMOND PARTICLES, MATERIALS AND IMPREGNATED DIAMOND EARTH BORING BITS INCLUDING SUCH PARTICLES, AND METHODS OF FORMING SUCH PARTICLES, MATERIALS, AND BITS 审中-公开包封的金刚石颗粒，材料和IMPREGNATED DIAMANTERDBOHRMEISSEL这样的粒子和形成这样的颗粒，材料和凿子方法
公开(公告)号：EP2347086A2
公开(公告)日：2011-07-27
申请号：EP09828019.1
申请日：2009-11-10
CPC分类号： E21B10/46 , B22F1/02 , B22F2005/002 , B22F2998/00 , B22F2998/10 , B22F2999/00 , C22C26/00 , B22F1/025 , B22F3/1007 , B22F3/15 , B22F3/26 , B22F2201/20 , C22C1/1084
摘要： Earth-boring tools and components thereof include a particle-matrix composite material having encapsulated diamond particles embedded within a matrix material. Diamonds in the particles comprise less than about 25% by volume of the composite material, the matrix material comprises less than about 50% by volume of the composite material, and encapsulant material surrounding the diamonds at least substantially comprises a remainder of the volume of the composite material. Methods of forming at least a portion of an earth-boring tool include embedding encapsulated diamond particles in a volume of matrix material to form a particle-matrix composite material. The composite material is formed in such a manner as to cause diamonds to comprise less than about 25% of the composite material, the matrix material to comprise less than about 50% of the composite material, and encapsulant material surrounding the diamonds to at least substantially comprise a remainder of the composite material,
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3.发明授权
公开(公告)号：EP2122000B1
公开(公告)日：2013-05-15
申请号：EP08725891.9
申请日：2008-02-21
发明人： McCLAIN, Eric, E. , SCOTT, Dan, E. , FULLER, Wesley, Dean , WELCH, Robert, M. , EASON, Jimmy, W. , SKEEM, Marcus, R. , BRACKIN, Van, J.
CPC分类号： C22C26/00 , B22F2005/001 , B22F2998/00 , C22C1/101 , C22C1/1036 , E21B10/46 , B22F1/02 , B22F1/025 , C22C1/05
摘要： A method of constructing an earth-boring, diamond-impregnated drill bit has a first step of coating diamond grit with tungsten to create tungsten-coated diamond particles. These coated particles are then encapsulated in a layer of carbide powder held by an organic green binder material. The encapsulated granules are then mixed along with a matrix material and placed in a mold. The matrix material includes a matrix binder and abrasive particles. The mixture is heated in the mold at atmospheric pressure to cause the matrix binder to melt and infiltrate the encapsulated granules and abrasive particles.
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