The controlled fracture technique and its application in metalworking

The Controlled Fracture Technique studies how to prepare artificial cracks as well as how to make them propagate along the given path to realize the aim of precision separation of continuous interface of materials. It is of vital significance for billet production in the metalworking field. This paper introduces in detail the basic principles, such as the theory of artificial notching (cracking), the theory of regular fracturing etc. of the Controlled Fracture Technique. The methods of rotatory bending cropping and Low Impact Stress Cropping (LISC) presented in this paper, are free from the drawbacks of traditional shearing methods and have the advantages of being high in efficiency and accuracy, low in energy consumption, and feasible to use in production.