The prevention of surface damage is an important aspect during the production process of continuous cast products, since the deletion of these defects is associated with high costs. An economical production of high quality products therefore requires an optimal production process. This assumes better knowledge of mechanisms that lead to crack initiation – which represents a main goal of this research field.
Since 2007, research programs regarding surface crack phenomena stand in the focus of several K1-MET projects, Comet-K2 projects and company collaborations.
Amongst the efficient production of high quality products a special focus lays on the digitalisation of the continuous casting process. The goal is an online defect-risk model, which predicts the susceptibility for casting defects to appear and automatically adjusts the casting parameters to less critical conditions in order to prevent damage of the material.
Several experimental facilities and software products are used to deal with variable projects regarding the surface quality of casted and rolled products. A special focus lays on the IMC-B test. It presents a unique benchmark experiment which is used for investigations of the susceptibility to surface crack formation under continuous casting conditions. The definition of critical and non-critical testing parameters enable the steel producer to avoid or support conditions in the continuous casting machine in order to prevent surface cracks on the semifinished product. This saves costs, process capabilities and lowers the risk for a non-detected defect on a finished hot rolled product.
BHM – DOI 10.1007/s00501-019-00902-0