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    • 8. 发明申请
    • BRAZING METHODS FOR PDC CUTTERS
    • PDC切割机的制作方法
    • WO2010088504A1
    • 2010-08-05
    • PCT/US2010/022565
    • 2010-01-29
    • SMITH INTERNATIONAL, INC.ZHANG, YouheSHEN, YuelinDENG, Hong
    • ZHANG, YouheSHEN, YuelinDENG, Hong
    • E21B10/567B23K31/02
    • E21B10/573B23K1/0008B23K35/0222B23K35/0244B23K35/0255B23K35/30B23K35/3006
    • 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.
    • 一种用于制造井下切割工具的方法,其中所述切割工具包括切割元件支撑结构,所述切割元件支撑结构具有形成在其中的至少一个切割器凹坑,以支撑包括基底和超硬层的切割元件,其中所述方法包括: 切割元件进入刀口袋; 定位第一钎焊合金,使得当加热时,第一钎焊合金熔化并填充切割元件和与超硬层相邻的切割元件支撑结构之间的刀具槽中的空间; 定位第二钎焊合金,使得当被加热时,第二钎焊合金熔化并填充切割元件和不邻近超硬层的切割元件支撑结构之间的刀具槽中的空间; 并加热第一和第二钎焊合金使其熔化。