ROTATABLE CUTTING TOOL AND CUTTING TOOL BODY

A rotatable cutting tool (20) carried in a bore of a holder. The rotatabl e cutting tool (20) includes an elongate cutting tool body (22) that has a c entral longitudinal axis (L-L), an axial forward end (24) and an axial rearw ard end (26). The cutting tool body has an axial forward hardness region...

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Bibliographische Detailangaben
Hauptverfasser:	MARATHE, ANIRUDDA S, OJANEN, RANDALL W, BITLER, JONATHAN W, MACINTYRE, RAY C
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, ORTHE LIKE EARTH DRILLING FIXED CONSTRUCTIONS MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR MINING MINING OR QUARRYING
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Beschreibung
Zusammenfassung:	A rotatable cutting tool (20) carried in a bore of a holder. The rotatabl e cutting tool (20) includes an elongate cutting tool body (22) that has a c entral longitudinal axis (L-L), an axial forward end (24) and an axial rearw ard end (26). The cutting tool body has an axial forward hardness region (60 ) having a first average hardness, a rearward hardness region (64) having a third average hardness, and a transition hardness region (62) mediate of and contiguous with the axial forward hardness region (60) and the axial rearwa rd hardness region (64), the transition hardness region (62) having a second average hardness. The second average hardness is less than the first hardne ss, and the third average hardness is less than the second average hardness.