CAJ | 학술논문

以二辊?160 mm×150 mm立式铝带实验铸轧机为对象，基于MSC.Marc商用有限元软件及其二次开发接口，引入纯铝固液两相材料本构模型和界面压力热阻数学模型，建立了双辊铸轧过程热力耦合非线性有限元模型。采用生死单元法模拟铝液的连续浇入，解决了辊套和铸轧区铝带材间的连续耦合传热问题。通过数值模拟，给出了铸轧速度、浇铸温度、熔池高度等因素对 KISS 点位置和辊面温度时间历程的影响规律，并对典型工况温度模拟结果进行了实验验证。
이이곤?160 mm×150 mm입식려대실험주알궤위대상，기우MSC.Marc상용유한원연건급기이차개발접구，인입순려고액량상재료본구모형화계면압력열조수학모형，건립료쌍곤주알과정열력우합비선성유한원모형。채용생사단원법모의려액적련속요입，해결료곤투화주알구려대재간적련속우합전열문제。통과수치모의，급출료주알속도、요주온도、용지고도등인소대 KISS 점위치화곤면온도시간역정적영향규률，병대전형공황온도모의결과진행료실험험증。
Aiming at the?160 mm×150 mm vertical type experimental twin-rollers continuous caster,a thermal-mechanical coupled FEM model of twin-roller casting process was established with MSC.Marc and its'secondary development interface based on the solid-liquid two phases constitutive model of pure aluminum and the thermal resistance model considering the contact pressure.The tech-nique of deactivate and reactivate element method was used to simulate the continuous casting of alu-minums liquid,and the problem of coupled heat transmission between the cast roll shell and alumi-num strip in the cast rolling area was therefore resolved.From the simulation results,the influences of casting speed,casting temperature,the height of cast rolling area on the position of KISS point and the time history of temperature on the roll surface were presented.An twin-roller casting experiment was carried out,and the numerical simulation results are in good agreements with the experimental data.