New automation system for stretch-reducing mill

摘要

The automation system of the existing stretch-reducing mill (SRM) at the V & M (Vallourec & Mannesmann Tubes) works in Zeithain has been successfully commissioned. The project was carried out by SMS Meer. It also involves the replacement of the technology system supplied by SMS Meer in 1992 with a Carta~R system of the latest generation comprising the following software modules: Planning system, for calculation of the static speeds, pass forms and tool data Crop End Control (CEC) system for reducing the length of the thickened tube ends inherent in the stretch-reducing mill process Wall Thickness Control Average (WTCA) for speed control of the 30 electric motors in relation to the average wall thickness of the ingoing shells in order to optimize the average wall thickness of the tubes produced Wall Thickness Control Local (WTCL) for speed control of the electric motors in order to correct wall thickness deviations of the ingoing shells Planning Optimization Module for optimum speed setting and control for the first tube of a rolling lot.