A method for manufacturing a down hole cutting tool, wherein the cutting tool includes a cutting element support structure having at least one cutter pocket formed therein to support a cutting element comprising a substrate and an ultrahard layer, wherein the method includes inserting a base portion of the cutting element into the cutter pocket; locating a first braze alloy such that when heated the first braze alloy melts and fills a space in the cutter pocket between the cutting element and the cutting element support structure adjacent the ultrahard layer; locating a second braze alloy such that when heated the second braze alloy melts and fills a space in the cutter pocket between the cutting element and the cutting element support structure non-adjacent the ultrahard layer; and heating the first and second braze alloy such that they melt.
申请公布号
WO2010088504(A1)
申请公布日期
2010.08.05
申请号
WO2010US22565
申请日期
2010.01.29
申请人
SMITH INTERNATIONAL, INC.;ZHANG, YOUHE;SHEN, YUELIN;DENG, HONG