Inconel 718圆钢热连轧温度场的热力耦合分析  

A Coupled Thermo-mechanical Analysis of Transient Temperature Field during Hot Continuous Rolling of Inconel 718 Superalloy Round Rod

作　　者：隋凤利[1] 陈礼清[1] 刘相华[1] 刘全[2] 李伟[2] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110004 [2]上海宝钢集团特殊钢分公司技术中心,上海200940

出　　处：《轧钢》2008年第6期25-28,共4页Steel Rolling

基　　金：国家自然科学基金重点项目(50634030);教育部新世纪优秀人才支持计划(NCET-06-0285)

摘　　要：采用三维弹塑性有限元方法建立了Inconel718合金圆钢在14个道次热连轧过程中的热力耦合分析模型,并在方坯初始温度为960～1000℃,初始速度为0.15～0.25m·s^(-1)的范围内模拟了轧件中间断面特征点的温度变化。结果得出,轧件芯部温度随初始温度的降低和初始速度的升高而升高;随轧制道次的增加,因初始温度不同而导致的轧件芯部温度的差异会越来越小,但因初始速度不同而导致的轧件芯部温度差异始终存在。A coupled thermo-meehanieal model for calculating the laws of temperature field evolution has been developed on fourteen-pass hot continuous rolling of Inconel 718 alloy round rod using 3D elastic-plastic FEM. Temperature of characteristic analysis points in the intermediate cross-section of the workpiece has been simu- lated during the original temperature range 960-1000℃ and the original velocity range 0.15-0.25m.s^-1 , the influence of rolling parameters（original temperature and original velocity of the billet）on temperature variation has been analyzed and different cooling modes have been discussed for different rolling parameters. The simulated surface temperature has a good agreement with the measured one during an actual roiling process.

关 键 词：INCONEL 718圆钢 热连轧 温度场 弹塑性有限元方法 

分 类 号：TG335.62[金属学及工艺—金属压力加工]