PRODUCTION OF THREE-LAYER STEEL BIMETALLIC STRIPS IN THE UNIT OF CONTINUOUS CASTING AND DEFORMATION. REPORT 2

Abstract

The paper states urgency of the problem of determining stressstrain state of metals of the cladding layer and the main strip in  production of three-layer bimetal: alloyed steel-constructional steelalloyed steel. Temperature field of the main strip and cladding layer  is given to calculate stress-strain state of metals of three-layer bimetallic strip. Initial data for calculating this stress-strain state are  given. To assess the effect of coefficient of friction between cladding  layer  s and the main strip on stress-strain state of metals in deformation zone, three values of it are taken. Geometric model is described  for calculating stress-strain state and metal flow in deformation center of cladding layer. Characteristic lines and points of calculation are  provided. Technique for solving the problem of determining stresses  and flows in deformation focus is described by finite element method  using ANSYS app. Regularities of flow of cladding layer’s metal  along the length of deformation center and movement of the main  strip of bimetallic ingot are given. Values   of mutual displacement of  layers of bimetallic strip are determined as a function of deformation  degree of the cladding layer. And the recommendations are given on  this degree to improve quali ty of a three-layer bimetal. Regularities  of distribution of axial and tangential stresses in deformation center  are presented for production of steel three-layer bimetallic strips in  the unit of combined continuous casting and deformation. Stress state  of the cladding layer’s metal in focus of cyclic deformation was estimated from the position of improving quality of three-layer bimetallic strips produced in such unit.