Digital twin for combined casting and rolling line control

In the production and operation of rocket and space installations, various aluminum alloys are widely used, both in structural elements and in communication lines and power supply. The parameters of alloys processing operations must be strictly maintained in order to exclude defects and obtain products of the required quality. Technological processes of metal processing in space engineering include such operations as casting, rolling, pressing and can use continuous melt-crystallizationshape lines, which imposes additional requirements on the integrated control of such a line. The aim of the work is to create a digital twin to control a combined casting and rolling complex. Based on the previously presented mathematical models of the units and components of the complex (furnace, tray, mold, pressing unit, straightening and cooling device, spools), a program has been developed in the TIA Portal software environment using the S7-1200 microprocessor controller, which simulates the change in parameters of both rolled metal, and devices of the casting and rolling line. The structure and user interface of the program are presented. The calculations of the parameters of the technological cycle in the processing of three alloys were carried out, which give an idea of the distribution of temperatures and speeds of the rolled metal in each unit of the installation. The program can be used in production both for preliminary calculations of the processing of various alloys in order to select the necessary control actions, and during the process as part of an existing process control system to refine the cooling parameters and casting speed.