Nowadays simulation methods for controlling the process and quality of foundry pieces have very important role. This leads to a better quality, reduction of expenses, and reduction of production time. In this way, most of the big pieces founded in this unit are simulated by SUT CAST and PROCAST, which are considerable softwares in Metallurgy Industry. These softwares are able to simulating foundry pieces make by each kind of alloys with high speed and accuracy of alloys, and high speed and accuracy.