Numerical Simulation Of The H-beam In The Cogging And CCS Rolling Process

In this paper, combine the rows mill transformation of the Baotou Iron&Steel,using DEFORMfinite element software to simulate the rectangular billet and shaped blanks breakdown rolling, andCCS strip mill rolling process, The distribution of stress and strain are researched in the rollingprocess, the metal flow and the influence on aging of wearing are researched and the rectangularbillet and shaped billet cogging rolling to make a comparative analysis, analyzing reasonable of theH-beam existing roll pass system.The simulation results show that: all pass stress distribution is similar in the rectangular billetrolling. Rectangular billet BD1cogging rolled of H section steel, the billet deformation is in the rollwith rolling cut depths. Rectangular billet the BD2cogging and shaped billet rolling H-beam, thebillet deformation occurs mainly is in the web and flange connection. Beam blank cogging rollingstress distribution is relatively uniform, rolling stress is significantly less than the blank rectangle,stress distribution can reduce the rolling force, reduce roll wear, increase productivity, reduceproduction costs. Beam blank rolling maximum stress, the strain mainly is in the waist and legsconnected arc at a value of stress is about191MPa, the strain is about1.71. Rectangular blanks passa maximum stress is253MPa, the strain is about2.6.The CCS universal rolling unit, pass reduction will lead to rolling stress although somedifferences, but the trend is basically the same. One time, two, three, five, seven and nine times ofthe universal rolling process, the web and the flange connection of the arc at the stress is the largest,the maximum stress is364MPa.4,6,8,10times is after edger into the stress of the the CCSuniversal finishing mill, the flange end subject to great stress, the maximum is405MPa. Rollingparts section of the equivalent strain is uneven distribution of CCS universal rolling process, thewebs of the rolling deformation is relatively small,1,2,3,4,5,7and9times of large deformationin universal rolling process occurs mainly is in the web and flange connections, the maximumequivalent strain is about2.18, the6,8,10times of large deformation occurs mainly is in the flangeat each pass the maximum effect is about2.94.Final total width of the CCS universal rolling is402.4mm, the flange width is10.7mm, totalheight of the rolling of the flange is200.2mm, the web last rolling thickness is7.1mm. The finalrolling pass of the H-shaped steel the size meet the national standard requirements.. The results showthat: H-beam pass system design, and size of each part of the final rolling pass H-shaped steel havereached the national standard.