公开(公告)号：US20140007512A1

公开(公告)日：2014-01-09

申请号：US14026976

申请日：2013-09-13

申请人： Smith International, Inc.

发明人： J. Daniel Belnap ,  Anthony Griffo ,  Peter Thomas Cariveau ,  Loel Corbett ,  Yahua Bao ,  Gerald Demenna

IPC分类号： E21B10/567

CPC分类号： E21B10/567 ,  C04B35/52 ,  C04B35/5831 ,  C04B2235/386 ,  C04B2235/427

摘要： A method for making a thermally stable cutting element may include forming an acid mixture containing two different acid species by combining an acid solution and at least one acid-forming compound, wherein the at least one acid-forming compound is provided in solid form, and wherein the at least one acid-forming compound produces an acid that is different than the acid solution; treating at least a portion of a sintered diamond body by placing the sintered diamond body in the acid mixture, wherein the sintered diamond body comprises: a matrix phase of bonded-together diamond grains; a plurality of interstitial regions dispersed within the matrix phase; and a metal material disposed within a plurality of the interstitial regions; wherein the treating removes the metal material from at least a portion of the plurality of interstitial regions; and removing the sintered diamond body from the acid mixture after a predetermined length of time, wherein at least a portion of the diamond body removed from the acid mixture is substantially free of the metal material and is a thermally stable diamond body.

摘要翻译： 制造热稳定切割元件的方法可以包括通过组合酸溶液和至少一种酸形成化合物形成含有两种不同酸物质的酸混合物，其中所述至少一种酸形成化合物以固体形式提供，以及 其中所述至少一种酸形成化合物产生不同于酸溶液的酸; 通过将烧结金刚石体置于酸混合物中来处理烧结金刚石体的至少一部分，其中所述烧结金刚石体包括：接合在一起的金刚石晶粒的基体相; 分散在基质相中的多个间隙区域; 以及设置在多个间隙区域内的金属材料; 其中所述处理从所述多个间隙区域的至少一部分去除所述金属材料; 以及在预定的时间长度之后从所述酸性混合物中除去所述烧结金刚石体，其中从所述酸混合物中除去的所述金刚石体的至少一部分基本上不含所述金属材料，并且是热稳定的金刚石体。