Secondary cooling concepts to increase the efficiency and flexibility of slab casters

German companies Lechier and SMS Siemag have discovered a spray nozzle technology called X-Cast® EcoCooler for an extended control range and a reduction of energy input. The starting point of a new development is the required technology and its boundary conditions. mum casting width. In order to ensure an optimum setting of secondary cooling, supply of water over the slab width, and to allow for a flexible adjustment to the various sections widths, control loops 3 to 11 are designed as separate control loops. This way, a differentiated control or selective disconnection of the control loops is possible for an optimized cooling strategy where various types of steel grades are involved. To optimally design the solidification of the hot strand, cooling models are used in process automation to calculate the required cooling water flow rates and to thus preset the setpoints for the necessary spray water volume in a differentiated manner.