Boron carbide micro-powder sapphire grinding fluid
Release time：2021/03/18 Author：
Meiqi
The grinding fluid consists of boron carbide powder (W40,Size 26 ~ 36 um) and water-based lubricants, the suspension stability of permeability and cleaning an outstanding performance, use process without a lot of bubbles produced grinding fluid of these advantages make the suspension performance of boron carbide powder is very easy to permeate the sapphire crystal and lapping plate into the small gap Grinding gap in boron carbide distribution uniformity, good liquidity, high removal efficiency of grinding liquid is the main reason for the long service lifeIn the present work reports the Z - W40 grinding fluid, in 16 b grinding machine, 90 g/cm2 pressure condition, about 2 inches in diameter of grinding to A sapphire, typical removal efficiency is 7.4 um/min, the surface roughness Ra is 0.35 um, service life can continuous processing 20 plate of sapphire To make performance comparison, we also use the industry commonly used in 240 # boron carbide abrasive grit (size is 56 to 64 um) mortar mix into water (DI - F240) grinding comparisonUnder the same grinding conditions, the typical removal rate of boron carbide hydromortar is 2.5~ 3.5um /min, the surface roughness Ra is 0.9um, and the service life is 9 plates. Because the finer abrasive sand is used as the abrasive in this scheme, the smaller roughness is obtained, which can greatly shorten the subsequent processing (finishing grinding) time.
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