Controlling homogeneity and reproducibility in the production of heavy plates

To derive a representative assessment of the achieved level of control in the production of heavy plates the increasing relevancy and the various aspects of homogeneity and reproducibility criteria, the role of process control and the investigation methods have to be considered. The aspects of fitness for use and of fabrication are driving forces for a narrow control of plate properties, which includes the homogeneity within all parts of a delivered plate and also the repeatability of properties from plate to plate produced for the same specification or order. With view to the specified range of composition, process parameters and mechanical properties adapted target ranges are defined. The steps of production are controlled and monitored by process computers. So the desired level of the capability of the process can be assured. This is a prerequisite for process control.