Experimental and Numerical Investigations on Hot Tearing during Continuous Casting of Steel

This paper focuses on hot tearing in continuous casting of steel and the experimental as well as numerical prediction of the hot tearing susceptibility. As a preliminary point, the current understanding of the appearance of this kind of defects and the resultant requirements for numerical und experimental hot tearing simulation will be briefly summarized. The next section describes the experimental determination of critical strain values by means of the proven SSCT (Submerged Split Chill Tensile) test and their implementation into a 1D-FV-solidification model (one-dimensional-finite-volume) developed in-house. Exemplarily, the model will be applied to the casting of two medium carbon steel grades on a slab casting machine.