Khytrykh I. Improvement of Impulse Cutting Processes for Continuous Casting by Numerical Simulation

Object of research - manufacturing process of impulse (high-speed) cutting of continuous castings. Research objective - improvement of manufacturing process of impulse cutting of hot metal which allows to reduce metal cost by increase of productivity. Methods of research and equipment - fundamental points of fracture mechanics, theory of elasticity, theory of plastic flow, mechanical shock, theory of combined and dynamic problems of thermoelasticity and results of laboratory and experimental research works. Numerical research was made with the help of FEM implemented in modern CAD/CAE systems (Abaqus, LS-DYNA). Mathematical application Maple and office program Microsoft Excel were used to get approximated results. SolidWorks was used to create 3D geometry of cutting machine and its elements. Theoretical and practical results - peculiarities of interaction for "Cutter - tool - workpiece" system were analyzed to remove a negative impulse directed to continuous casting machine crystallizer, optimum laws of motion of V-shaped cutting tools were found; cutting with combined cutting tool was improved. Manufacturing process of impulse cutting of continuous castings was improved for V-shaped and combined knives. Recommendations for cutting tools designing and kinematic work of cutting machine were stated. Algorithm for FE-calculations for "Cutter - tool - workpiece" system was developed. Newness - for the first time the peculiarities of interaction for "ICM - cutting tool - continuous casting workpiece" system were analyzed to remove a negative impulse directed to continuous casting machine crystallizer. Implementation - results of research work are implemented at "Turbosteel-Engineering" Enterprise (Kharkov). Area of application - developed models can be used for solving of high-speed cutting problems for continuous casting.