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 mation 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.
Highlights
Calibration of strikers was provided with separating collars for production of three section billets connected by bridges in a single pass. 3D ima ge of them are shown
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
Summary
Изве сти я вы сши х уч ебн ы х з а ведений. Ч ер ная м ет аллу р гия. 2020. 70,7×70,7 мм из стали марки Ст3сп на установке непрерывного литья и деформации. Температура внешней поверхности сляба равна 1200 °С, а его осевой зоны – 1450 °С. 1 изображен калиброванный боек для получения трех сортовых заготовок квадрат 70,7×70,7 мм из сляба без жидкой фазы толщиной 100 и шириной 315 мм. Объемное изображение трех сортовых заготовок, соединенных перемычками, приведено на рис. 2. Величина эксцентриситета эксцентриковых валов равна 5 мм, а их угловая скорость – 50 мин–1. Зависимости модуля упругости и сопротивления пластической деформации от степени деформации и температуры для стали марки Ст3сп представлены на рис. В силу симметрии расчет проводили для четверти очага деформации и бойка. Что позволило вводить в контакт бойка с очагом деформации только его рабочую поверхность
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