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A ROTARY EARTH STRATA PENETRATING TOOL WITH A CERMET INSERT HAVING A Co-Ni-Fe-BINDER
A ROTARY EARTH STRATA PENETRATING TOOL WITH A CERMET INSERT HAVING A Co-Ni-Fe-BINDER
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机译:具有Co-Ni-Fe粘结剂的金属陶瓷插入物的旋转地层穿透工具
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摘要
A rotary tool that includes an elongate tool body and a hard insert (16) affixed to the tool body is disclosed. The hard insert comprises a WC-cermet comprising tungsten carbide and about 5 wt.% to 19 wt.% Co-Ni-Fe-binder. The Co-Ni-Fe-binder is unique in that even when subjected to plastic deformation, the binder substantially maintains its face centered cubic (fcc) crystal structure and avoids stress and/or strain induced transformations.
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