Investigation Of Optimize Wax Pattern In The Investment Casting By Using The Different Form Of Waxes

Abstract

Investment casting process used for precision component manufacture calls for accurate method design. It gives good surface finish, high dimensional accuracy, and complex shape. But due to some defects produced by the wax patterns result in the poor quality of the final casting product. The some common defects are like Shrinkage, inadequate surface finish, improper dimensional accuracy in the wax patterns. So there is need to remove these defects. The wax pattern handled during the melting, injecting will reflect the quality of wax pattern produced for the investment. Hence in the present work an attempt is made to produce the good quality wax pattern by using the different form of wax like Paraffin wax, Bee wax, Montan wax, Carnauba wax, China wax. We will vary the proportion of these waxes and make the different samples. In each sample we will find out the volumetric shrinkage, linear shrinkage, cracks formation etc. Keyword: investment casting, air forced oven, wax pattern