FIELD: process engineering.
SUBSTANCE: invention relates to grinding and may be used for grinding of drill bit polycrystalline diamond insert. Claimed process comprises contact of polycrystalline diamonds insert with grinding wheel including diamonds, polymer binder and mix of filler solid particles and filler soft particles. Note here that said diamonds feature concentration of diamonds of 175-225. Polymer binder makes 30-40 vol %. Mix of filler solid and soft particles makes 5-30 vol %. Solid-to-soft filler particles ratio in the mix makes 85:15 to 15:85.
EFFECT: higher efficiency of grinding, ruled out or decreased necessity in dressing the wheel outer surface.
8 cl, 2 tbl, 2 dwg
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