Influence of Superheat on Macrosegregation in Continuously Cast Steel Billet from Statistical Maximum Viewpoint

The statistics of extreme values (SEV) and the generalized Pareto distribution (GPD) are introduced to obtain predicted maximum carbon content represent macrosegregation degree along casting direction in continuous billets (represented by 82B cord steel). Subsequently, influence mechanism superheat on has been investigated. It’s found that SEV GPD methods can correctly results obtained method increase linearly with return period, while calculate upper limit value content. stochastic mathematical get rid limitations sampling length analysis area. During exploration based these two methods, lower secondary dendritic arm spacing (SDAS) make enriched element easier concentrating centerline, resulting centerline segregation corresponding result centerline. Under higher condition, will be mainly represented as V-shaped due decrease SDAS, leading off-center position.