DEVELOPMENT OF OPTIMUM SLIP RATIO FOR HIGH VOLTAGE PORCELAIN INSULATOR MANUFACTURING

The project work was carried out in an insulator manufacturing company. In this work, an effort will be made to analyze the optimum ratio of fresh slip, wet scrap and dry scrap and characterize the properties of porcelain insulators after firing. The insulator rods was prepared by extrusion using varied ratios of slips. The slip is a liquid clay body. The fired rods will be tested for density, Modulus of rupture, Modulus of Elasticity, Thermal Expansion and Hardness. The micro structural characterization will be carried out using SEM. This study is expected to provide an insight into the optimum usage of dry scrap, wet scrap and fresh slip ratios for manufacturing high voltage porcelain insulators. The F70 (Fresh slip 70%+Wet scrap slip 20%+Dry scrap slip 10%) gives optimum properties value when compared to other mixed ratios of slip.