This experiment utilized Plaster of Paris in making the mold and polymer resin in casting through thermosetting. The quality of the mold and casted product were observed after and from observations it was determined that the quality of cast product not on

The first 200 words of this essay...

SIGNIFICANCE OF THE QUALITY OF MOLD TO THE CAST PRODUCT

Abstract

Gravity casting is a process wherein the liquid metal is poured into molds without application of any external pressure. The liquid metal enters the cavity by gravity. This experiment utilized Plaster of Paris in making the mold and polymer resin in casting through thermosetting. The quality of the mold and casted product were observed after and from observations it was determined that the quality of cast product not only depends on the raw material to be used but also on the quality of the mold. Obtained porosity volume of the mold contributed to gas defects as seen in the micrographs.

Introduction

Gravity casting or permanent mold casting as the name suggests is a process wherein the liquid metal is poured into metallic molds without application of any external pressure. The liquid metal enters the cavity by gravity.

The start of casting technology, which forms casting by pouring melted metal into a mold and solidifying it, origins back to around 3,600 B.C. at Mesopotamia. Back then, bronze was melted and poured into a mold. On a papyrus from about 1500 B.C. of Egypt,