Abstract— Polishing is done by various abrasive blocks such as numbers 1, 2, 3, 4, 5 (generally used in granite workshops) or numbers 36, 80, 120, 220, 400, 800, 1200 (number indicates the grit size). These abrasives are available in different sizes and shapes depending upon the type of the machines. The abrasssive grit number 36 is generally used for rough polishing or initial polishing. The abrasive grit number 80, 120, 220 are also used for some-what rough polishing less than number 36 abrasive grit numbers 400 and 800 are for smooth polishing and 1200 size is used for very high smooth surface finish. Generally abrasives are made by emery powder and calcium. The grit sizes are obtained by adding the emery power with calcium in the required proportions. Various experiments are conducted by using two coolants 1) Water, 2) Water with oil, each time for polishing the granite slabs. Each time the different abrasive grits (abrasives grit number 36, 80, 120, 220, 400, 800) are used. The area polished and corresponding power consumed are measured. each experiment is carried for four trails.

Index Terms— Abrasive, Grit number, Coolants, Polishing

Cite: B Nageswara Rao and J E B Nelson, " Analysis of Polishing in Granite Tiles," International Journal of Mechanical Engineering and Robotics Research, Vol. 3, No. 2, pp. 131-135, April 2014.