METHOD OF PRODUCING STOMATOLOGIC HARD-ALLOY BURRS Russian patent published in 2010 - IPC A61C3/02 

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and can be used for fabrication of stomatologic burrs. Proposed method comprises producing burr shank and head, their soldering, grinding, checking, finishing and packing. Plasma is produced in the flow of plasma-forming gas in vacuum chamber on feeding voltage to flat electrodes. The latter are connected to high-frequency generator at vacuum chamber pressure of 26-40 Pa for 1-3 min. Flow rate of plasma-forming argon makes 0.03-0.05 g/s, current density on article surface makes 0.15-0.3 A/m², ion energy makes 90-110 eV. Burrs are arranged in the gap between parallel flat electrodes along plasma-forming gas flow.

EFFECT: higher wear resistance, reduced production costs.

3 tbl, 1 dwg