A RESINOID BONDED IN-SITU TIB2 BASED CERAMIC GRINDING WHEEL AND METHOD OF MAKING THE SAME

摘要

The present invention involves the synthesis of resinoid bonded grinding wheel, which is prepared by blending in-situ HB2 and AI2O3. The Titanium di boride (TiB2) particles were extracted through an in-situ reaction between halide salts with Aluminium aloy to produce AI-T1B2 composite. The T1B2 particles are extracted separately by treating the Al-T1B2 composite in acidic medium. The T1B2 particles obtained are ball milled and then blended with AI2O3 particles with a grain size of 4-5um in the ratio of 60:40 by weight. The bonded abrasive wheel exhibits a high hardness of approximately 76 HRC and good wear resistance. The performance study on grinding was carried out on steel (EN31) in both mill annealed and hardened conditions. The developed grinding wheel shows increased G-ratio and provides good surface finish compared with commercial AI2O3 wheels.