Effect of the Leveling Conditions on Residual Stress Evolution of Hot Rolled High Strength Steels by Deformation Analysis of Leveling Process

레벨링 공정 해석에 의한 교정 조건이 열연 고장도 강판의 잔류음력에 미치는 영향 연구

In order to analyze the effect of leveling conditions on residual stress evolution of hot rolled high strength steels, a numerical algorithm was developed. It was able to implement the effect of plastic fraction (intermesh) in leveling, line tension, work roll bending, and initial residual stress and curl distribution. The effect of work roll bending on residual stress and curl were studied by using the developed program. The validity of simulated results was verified from comparison with the experimentally measured residual stress and curl in a sheet.