Continuous casting billet corner transverse crack defect forecasting method based on the metallurgical principle

The invention belongs to the technical field of metallurgical continuous casting, and particularly relates to a continuous casting billet corner transverse crack defect forecasting method based on the metallurgical principle. Aiming at the defect of insufficient online prediction of the corner transverse crack defect of the continuous casting slab in the prior art, the invention provides the prediction method for the corner transverse crack defect of the continuous casting slab based on the metallurgical principle, which comprises the following steps: firstly, analyzing the metallurgical principle of the continuous casting slab, and establishing a principle model for key factors of the corner transverse crack defect of the continuous casting slab; establishing a BP neural network model by taking the principle model as a node of an input layer; learning the established BP neural network model by using the existing continuous casting billet metallurgy sample data until a verified BP neural network model is obta