Invention Grant
US08052765B2 Contoured PCD and PCBN for twist drill tips and end mills and methods of forming the same 有权
用于麻花钻头和端铣刀的轮廓PCD和PCBN及其形成方法

Contoured PCD and PCBN for twist drill tips and end mills and methods of forming the same
Abstract:
Contoured solid polycrystalline superabrasive material such as twist drill tips and endmill flank segments can be formed by preparing a precursor mold having a plurality of shaped openings each corresponding to a predetermined shape. A specially prepared charge feed can be placed into the shaped openings to form a charged precursor. The charge feed can include a substantially homogeneous mixture of superabrasive source particulates, sintering binder, and optional inorganic bonding medium. A loaded reaction cup-assembly including the charged precursor can be subjected to a pressure, temperature and time sufficient for sintering and formation of the contoured polycrystalline superabrasive material. Reduced finishing steps and increased tailorability of grade and quality of final polycrystalline products can be readily achieved.
Information query
Patent Agency Ranking
0/0