AN EVALUATION OF CYLINDRICAL RISER DESIGN WITH INSULATING MATERIAL FOR ALUMINIUM ALLOY CASTING

Abstract

To determine the optimum riser dimensions for a rectangular plate Aluminium alloy (Al-12%Si alloy) casting with insulating riser sleeve (plaster of paris) and chill (cast iron) to get the sound casting by using ANSYS software. Solidification simulation is performed using ANSYS software which facilitates to visualize the temperature distribution in various locations of the casting. The casting used in this simulation is a double plate casting of size 240x150x 25 mm with cylindrical side riser having a hemispherical bottom of height (D/2) and diameter with H/D= 1.5. In the ANSYS software three models are considered to find the optimum riser. The first model is modeled of a riser without sleeve and chill, the second model is modeled of riser with insulating sleeve and the third model is modeled of riser with insulating sleeve and chill. The ANSYS software helps to reduce the experimental work.