The final verification of the complex production technology → gearboxes → railway transport was carried out. In the period 01/2019-12/2022, experimental meltings focused on the melting process, out-of-furnace processing and casting settings were carried out. As part of the design of the complex production technology, simulation software was used with a focus on the design of the casting system, casting procedures and technologies associated with them. All melts from the verification series, together with the results of numerical simulations, met the quality parameters defined by the customers, for whom the project outputs are planned to be applied.