公开(公告)号：EP2011893A2

公开(公告)日：2009-01-07

申请号：EP08167176.0

申请日：2006-06-30

申请人： Smith International, Inc.

发明人： VISWANADHAM, Ramamurthy ,  LIANG, Dah-Ben ,  LOCKWOOD, Gregory T.

IPC分类号： C23C8/04 ,  E21B10/56

CPC分类号： E21B10/56 ,  C23C30/005

摘要： A cutting tool that includes at least one tungsten carbide cutting element disposed on a support, wherein at least one tungsten carbide cutting element has at least one localized region having a material property different from the remaining region, wherein the at least one localized region having a different material property is prepared by a method including determining at least one localized region needing a variation in a material property different from the remaining region; coating a portion of a surface of the at least one tungsten carbide cutting element with a refractory material such that a surface corresponding to the localized region is left uncoated; and treating the coated cutting element with a selected agent to diffuse the selected agent into the localized region is disclosed.

摘要翻译： 一种切削工具（26），其包括设置在支撑件上的至少一个碳化钨切割元件（28），其中至少一个碳化钨切割元件具有至少一个局部区域（74,76,78），其具有不同于 其中所述至少一个具有不同材料性质的局部区域通过包括确定至少一个局部区域的方法来制备，所述局部区域需要与其余区域不同的材料性质的变化; 用耐火材料涂覆所述至少一个碳化钨切割元件的表面的一部分，使得对应于所述局部区域的表面不被涂覆; 并且公开了用所选择的试剂处理涂覆的切割元件以将所选择的试剂扩散到局部区域中。

公开(公告)号：EP1739201A1

公开(公告)日：2007-01-03

申请号：EP06116442.2

申请日：2006-06-30

申请人： SMITH INTERNATIONAL, INC.

发明人： VISWANADHAM, Ramamurthy ,  LIANG, Dah-Ben ,  LOCKWOOD, Gregory T.

IPC分类号： C23C8/04 ,  E21B10/56

CPC分类号： E21B10/56 ,  C23C30/005

摘要： A cutting tool that includes at least one tungsten carbide cutting element disposed on a support, wherein at least one tungsten carbide cutting element has at least one localized region having a material property different from the remaining region, wherein the at least one localized region having a different material property is prepared by a method including determining at least one localized region needing a variation in a material property different from the remaining region; coating a portion of a surface of the at least one tungsten carbide cutting element with a refractory material such that a surface corresponding to the localized region is left uncoated; and treating the coated cutting element with a selected agent to diffuse the selected agent into the localized region is disclosed.

摘要翻译： 一种切削工具，其包括设置在支撑件上的至少一个碳化钨切割元件，其中至少一个碳化钨切割元件具有至少一个具有不同于其余区域的材料特性的局部区域，其中所述至少一个局部区域具有 通过包括确定需要不同于剩余区域的材料性质的变化的至少一个局部区域的方法来制备不同的材料性质; 用耐火材料涂覆所述至少一个碳化钨切割元件的表面的一部分，使得对应于所述局部区域的表面不被涂覆; 并且公开了用所选择的试剂处理涂覆的切割元件以将所选择的试剂扩散到局部区域中。

公开(公告)号：EP1739201B1

公开(公告)日：2008-10-22

申请号：EP06116442.2

申请日：2006-06-30

申请人： SMITH INTERNATIONAL, INC.

发明人： VISWANADHAM, Ramamurthy ,  LIANG, Dah-Ben ,  LOCKWOOD, Gregory T.

IPC分类号： C23C8/04 ,  E21B10/56

CPC分类号： E21B10/56 ,  C23C30/005