Numerical Simulation Of304Stainless Steel Strip Cold Rolling Process

As the modern industry developing rapidly, more and more high quality cold stripproducts are needed now.So the research of shape control is important from the view ofboth theory and production.In order to study the effects of tension and the work rollerdiameter on profile shape of single pass rolling strip of304austenite stainless steel(%：0.053C、0.55Si、1.50Mn、0.30P、0.002S、17.02Cr、8.01Ni、0.05Cu、0.08Mo), basedon explicit dynamic finite element method, the simulation and analysis on cold rollingprocess of2mm steel strip with four high mill have been carried out by ANSYS/LS-DYNAsoftware.It is found that, the tensions increase the metal flow in thick direction with differenttension parameters. The backward tension works obviously. When increasing bothbackward and forward tensions at the same time, the effect on the reduction is moreefficient. The increasing of work roller diameter could amplify the rolling force and thereduction.The stressstrain curve go more steady and the shape of strip become better alongwith the decreasing of the work roller diameter.Result show that with reduction0.06mm, forward tension13-40Mpa, and backtension1-18Mpa rolling process, the edge of rolled strip is acted under compressive stressand the middle part is acted under tensile stress led to produce tiny edge wave; withincresing forward tension from15Mpa to21Mpa, the strain of strip along width directiontrends towards uniform, i.e. increasing forward tension is available to improve the flatnessof strip, and increasing backward tension is also available to improve the profile shape ofstrip and its effect is more obvious that increasing forward tension.The rolling force is raised with the increasing of the work roller dimension, the actualreduction also increase at the same time. The average of stress decrease along with theincreasing diameter of the work roller.But this variation is about1%.The equivalent straincurve changes more stable along with the decreasing diameter of the work roller.Thewaves edge was most obvious when the work roller diameter is60mm.This paper set up abridge between the finite element theory and actual rolling conditions. It provide effectivereference to formulating rational rolling technology.