Hard insert with PDC layer

In the transition (X, X') between main cutter (3) and rear attachment edge (4) the minimum radius of curvature (K) exceeds R/20. An independent claim is included for the corresponding method of cutting insert manufacture.

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Bibliographische Detailangaben
1. Verfasser:	Moseley, Steven
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BORING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PERFORMING OPERATIONS TRANSPORTING TURNING
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Beschreibung
Zusammenfassung:	In the transition (X, X') between main cutter (3) and rear attachment edge (4) the minimum radius of curvature (K) exceeds R/20. An independent claim is included for the corresponding method of cutting insert manufacture.