Abstract— Since many years the global economy has been focused to constantly increase profitability. One of the ways leading to this goal is optimization. The optimal production process creates savings by reduction of labour, material usage, production waste or costs of poor quality. The product could be also optimized, by increasing performing parameters such durability, reliability or other specific useful features. Those days many methods of optimization is available, but the most advanced are based on the computing simulation, which are able to simulate processes and phenomena that apply to the product and allows applying its modification to maintain key parameters with reduction of cost of production. The article describes the process of preparation and running the simulation of ingot mould production process. Ingot mould is an element of a casting accessory, made of grey cast iron. Presented research was a part of a larger process aimed at extending the poured life by describing and simulating the phenomenon occurring in an element during its production and operation. The work carried in the Siemens Simcenter 3D environment and usage of the Multiphysics solver to perform coupled thermal and structural analyses.