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公开(公告)号:US5663512A
公开(公告)日:1997-09-02
申请号:US343005
申请日:1994-11-21
申请人: Kevin W. Schader , Ronald L. Jones , James L. Overstreet , Danny E. Scott , Mou-Chih Lu , Alan J. Massey
发明人: Kevin W. Schader , Ronald L. Jones , James L. Overstreet , Danny E. Scott , Mou-Chih Lu , Alan J. Massey
CPC分类号: C22C1/051 , B22F1/0003 , B23K35/327 , C23C30/005 , C23C4/10 , E21B10/50 , B22F2999/00
摘要: A hardfacing composition comprises at least 60% by weight of hard metal granules including a quantity of sintered carbide pellets and a quantity of cast carbide pellets. The cast and sintered carbides are selected from the group of carbides consisting of chromium, molybdenum, niobium, tantalum, titanium, tungsten, and vanadium carbides and alloys and mixtures thereof. The balance of the hardfacing composition is matrix metal with traces of flux or deoxidizer, and alloying elements. All percentages given are pre-application ratios.
摘要翻译: 表面硬化组合物包含至少60重量%的硬质金属颗粒,其包括一定数量的烧结碳化物颗粒和一定数量的碳化物颗粒。 铸态和烧结碳化物选自由铬,钼,铌,钽,钛,钨和碳化钒组成的碳化物和合金及其混合物。 耐磨组合物的平衡是具有助焊剂或脱氧剂痕量的基质金属和合金元素。 所有给出的百分比是应用前比例。
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公开(公告)号:USRE37127E1
公开(公告)日:2001-04-10
申请号:US09137254
申请日:1998-08-19
IPC分类号: C22C2900
CPC分类号: C22C1/051 , B22F1/0003 , B22F1/0096 , B22F9/04 , B22F2999/00 , B23K35/327 , C22C29/08 , C22C33/02 , C23C4/10 , C23C30/005 , E21B10/50 , C22C29/06 , B22F1/0048 , B22F3/10 , B22F9/082
摘要: A hardfacing composition comprises at least 60% by weight of hard metal granules including a quantity of sintered carbide pellets and a quantity of cast carbide pellets. The cast and sintered carbides are selected from the group of carbides consisting of chromium, molybdenum, niobium, tantalum, titanium, tungsten, and vanadium carbides and alloys and mixtures thereof. The balance of the hardfacing composition is matrix metal with traces of flux or deoxidizer, and alloying elements. All percentages given are pre-application ratios.
摘要翻译: 表面硬化组合物包含至少60重量%的硬质金属颗粒,其包括一定数量的烧结碳化物颗粒和一定数量的碳化物颗粒。 铸态和烧结碳化物选自由铬,钼,铌,钽,钛,钨和碳化钒组成的碳化物和合金及其混合物。 耐磨组合物的平衡是具有助焊剂或脱氧剂痕量的基质金属和合金元素。 所有给出的百分比是应用前比例。
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公开(公告)号:US06227314B1
公开(公告)日:2001-05-08
申请号:US09301750
申请日:1999-04-29
IPC分类号: E21B1016
摘要: An earth-boring bit has a body with a threaded pin on the upper end for connecting to a drill string. Bit legs are formed symmetrically on the exterior of the body and extend downward. The lower portion of each bit leg is inclined and offset circumferentially from the upper portion. A cutter is mounted to the lower portion of each bit leg for rotation about a cutter axis. Nozzle bosses are located between each bit leg. A flow channel exists on both sides of each nozzle boss. The nozzle boss is inclined in a similar direction to the bit leg.
摘要翻译: 钻孔钻头具有在上端具有螺纹销的主体,用于连接钻柱。 位腿对称地形成在主体的外部并向下延伸。 每个位腿的下部从上部倾斜并偏移。 切割器安装到每个钻头的下部以围绕切割器轴线旋转。 喷嘴老板位于每个位腿之间。 每个喷嘴凸台的两侧都有流动通道。 喷嘴凸台的倾斜方向与钻头腿相同。
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