整辊内嵌式板形检测辊瞬态温度场与应力场分析  

Transient Temperature Field and Stress Field Analysis of Entire Roller Embedded Shapemeter Roll

作　　者：吴海淼[1,2] 刘宏民[1] 于丙强[1] 杨利坡[1] 

机构地区：[1]燕山大学国家冷轧板带装备及工艺工程技术研究中心,河北秦皇岛066004 [2]河北工程大学机电学院,河北邯郸056038

出　　处：《钢铁》2014年第5期47-51,共5页Iron and Steel

基　　金：国家科技支撑计划资助项目(2011BAF15B02;2011BAF15B03);河北省自然科学钢铁联合研究基金资助项目(E2011203004);河北省自然科学基金资助项目(E2012203108)

摘　　要：在冷轧可逆轧制的不同道次,与板形检测辊接触的带钢温度差异显著,使得检测辊的温度场和应力场不稳定。运用有限元软件ANSYS建立了板形检测辊的热力耦合模型,分析了轧制过程中板形检测辊的瞬态温度场和应力场。结果表明,轧制开始后接触带钢的热量由辊体外表面向内表面逐渐传递,传感器正上方的辊体外表面温度上升最快,并在1 940s达到温度最大值135℃;骨架顶部与辊体内孔面的接触热阻使传感器的温度上升较慢,骨架顶部在2 280s达到温度最大值134℃;板形检测辊的最大应力发生在与骨架顶部接触的辊体内孔面上,其在940s达到最大值301MPa,满足材料强度的许用应力要求。通过模拟分析结果与现场实测数据对比,证明了有限元分析模型的正确性。The temperature of cold-rolled strip contacting with the shapemeter roll is obviously different in cold reversible rolling＇s different passes. Therefore, the temperature field and stress field of shapemeter roll are very instable. Using finite element software ANSYS, the coupled thermo-mechanical model was established to analyze the shapemeter roll＇s transient temperature field and stress field in cold reversible rolling process. Analysis results show that the contacting strip＇s heat transfers gradually from roll body＇s outside surface to inner hole surface in rolling process, and the temperature of roll body＇s outside surface right above the sensor rises fastest and attains maximum value of 135 ℃ after 1 940 seconds＇ rolling. Because of the thermal contact resistance of sensor framework＇s top surface and roll body＇s inner hole surface, the sensor＇s temperature rises slowly, and the temperature of framework＇s top surface attains maximum value of 134 ℃ after 2 280 seconds＇ rolling. Shapemeter roll body＇s maximum stress occurs at the contact area of roll body＇s inner hole surface and sensor framework＇s top surface. The maximum value of 301 MPa occurs after 940 seconds＇ rolling, and it can fulfill the material strength requirement. Comparisons of simulation results with field test data prove the correctness of finite element model.

关 键 词：可逆轧制 检测辊 温度场 应力场 有限元 

分 类 号：TG335[金属学及工艺—金属压力加工]