Control for Cold Rolling Mills

Sammanfattning: This report contains the details in a final research thesis work done rolling mill technology. The work is carried out at Heat Transfer located at Finspång. The main objective of this work is to evaluate thickness and flatness data from the profile to give an optimal start value for the pressure and force applied on the machine and the speed as well, so that the profiles produced, have the right thickness and best possible flatness. Thickness, start value for power, the degree of bending the profiles are set up and sent down to the control system. The report starts with a theory part describing the heating and cooling during process for aluminium profiles. A practical part describes experiments conducted on the rolling mill process under various conditions. The thesis work shows that the quality can be improved by rolling the slab in Aluminium industry by executing band tests and analysing graphs as 3-sigma, outward thickness and 3Dgraphs and its flatness.