ROTARY FILE CONTAINING HARD ALLOY

摘要

FIELD: process engineering.SUBSTANCE: rotary file comprises shank and working section with its outer surface made of hard alloy and provided with multiple right-hand screw chip grooves to make multiple cutting teeth. Note here that every said tooth has cutter face, clearance surface and positive face angle with no radial chamber on periphery.EFFECT: expanded operating performances.24 cl, 20 dwg