Stress-strain state of metal in deformation zone during production of steel section billets on the unit of combined continuous casting and deformation. Report 1

Abstract

Volumetric problem of determining stress-strain state of metal in deformation zone during forming of three section billets from the slab by separating collars of grooved strikers on the unit of combined continuous casting and deformation was set and solved. The expediency of using such unit was justified for longitudinal division of continuously cast slab into a series of section billets. Calibration of strikers was provided with separating collars for production of three section billets connected by bridges in a single pass. 3D image of them are shown. The technology of billets production on the unit of combined continuous casting and deformation is described. The authors present the problem statement, initial data and boundary conditions for determining stress-strain state of metal in deformation zone during production of three section steel billets by calibrated strikers using the ANSYS software. Dependences of the modulus of elasticity and strain resistance on temperature and degree of deformation are given for St3sp steel. The solid-state finite elements used in calculation of stress-strain state of metal in deformation zone and dimensions of the grid are described. The results of calculation of stress-strain state of metal in deformation zone were obtained by solving the problem of elasticity by the finite element method in volumetric formulation. The results of calculation of displacements and stresses in deformation zone are given in form of graphs and tables by working surfaces in four cross sections and are presented for characteristic points. Values and regularities of distribution of axial displacements in width and length of deformation center were determined during introduction of strikers separating collars into continuously cast slab in production of three section steel billets on the unit of combined continuous casting and deformation. © 2020 National University of Science and Technology MISIS. All rights reserved.