Cooling Rate - Coiling Temperature Diagrams to Setup Strip Cooling at the Run-out Table and Calculate Texture and Mechanical Properties of Hot Rolled Steel Strip

摘要

A joint research project between TU Dresden, Institute of Material Sciences (IfWW), and Hoesch Hohenlimburg GmbH has the aim to develop a simulation program based on metal physics for the narrow strip mill of Hoesch Hohenlimburg. This program is supposed to allow making estimates if preset mechanical parameters of the finished hot rolled strip can be achieved and which preset values should be targeted for the cooling rate in the water-cooling line and for the coiling temperature. Before its introduction this inverse approach was tested using the specially developed simulation program 'Virtual Rolling Mill' (VRM) by post-calculations of hot rolled strip made of carbon steel or microalloyed with Nb, Ti, NbV or NbTi. It is based on the use of cooling rate-coiling temperature diagrams, which are calculated with the simulation program VRM and which provide optimum combinations of cooling rates and coiling temperatures. This paper gives an overview of the results obtained with the simulation program VRM.