Effect of multiple cavity mould design on slip casting thickness / Johnzen P. Baguinon

UTHESIS (Bachelor of Science in Ceramic Engineering)

Bibliography : Leaves 34-36

Slip casting is a widely used ceramic manufacturing technique that involves
pouring liquid clay (slip) into a porous mold, which absorbs the liquid and leaves a
solid clay body. The mould plays a significant role in the slip casting process as it
determines the shape and size of the final product. In this study, the effect of the number
of cavities in the mould on the thickness of the cast product was investigated. Slip
casting moulds with different one, two and four cavities were fabricated using Plaster
of paris. The moulds were used to cast slip prepared from Pasaleng clay and Padsan
River sand. The casting time was maintained at 15 minutes for each cast specimen, and
the mould was allowed to dry under the sun for another cycle. Water absorption of the
mould and thickness of the cast specimen were determined and compared using the
different mould configurations. It was observed that the amount of water absorbed, and
the resulting thickness of the cast specimen decreases with the number of times the
mould was used. However, the number of cavities did not significantly affect the water
absorption of the mould and the thickness of the cast specimen. It was the casting time
and the casting rate that significantly changed the resulting thickness of the cast
specimen. Moreover, the number of cavities in the mould including casting time
achieved the desired thickness of the cast specimen.