冷轧带钢边部减薄影响因素的分析  

Analysis on edge-drop and its influencing factors in cold strip rolling

作　　者：吴海淼[1] 董建荣[2] 赵立新[1] 王海军[3] 王凯[1] 庞志锋[1] 

机构地区：[1]河北工程大学机电工程学院,河北邯郸056038 [2]河北机电职业技术学院,河北邢台054048 [3]燕山大学轧制设备及成套技术教育部工程研究中心,河北秦皇岛066004

出　　处：《重型机械》2009年第3期30-34,共5页Heavy Machinery

基　　金：河北省自然科学基金资助项目(E20080007745);河北工程大学青年教师基金资助项目(070316)

摘　　要：针对冷轧带钢生产中普遍存在的边部减薄直接影响切边量大小、降低成材率,分析其形成机理,利用非线性有限元软件Marc,建立了模拟四辊冷轧机轧制过程的弹塑性有限元仿真模型。对比轧制力模拟结果与实测值,表明该模型是精确可靠的。并利用此模型,分析了压下率、摩擦系数以及带钢入口厚度、入口宽度等因素对边部减薄的影响规律,随着压下率、摩擦系数、带钢入口厚度的增大,边部减薄随之加剧;随着带钢入口宽度的增大,边部减薄先增大后减小。Edge drop is a widespread problem in cold strip rolling, which directly affects the quantity of side scrapping and lowers the metal yield. To reduce edge-drop, its mechanism is elaborated detailedly, and the elastic-plastic FEM model to simulate the rolling process on 4-high cold mill is developed with the software MARC. The fact that the simulation results of rolling force are basically close to the measured data proves the model＇s accuracy and reliability. Using this model, the author systematically analyses the effecting factors of edge-drop＇s such as reduction, friction coefficient, entry thickness and entry width. The results show that the edge-drop increases with the increment of reduction, friction coefficient and entry thickness, in addition, the edge-drop firstly increases and then decreases with the increment of entry width.

关 键 词：边部减薄 冷轧带钢 MARC 弹塑性有限元 

分 类 号：TG335.56[金属学及工艺—金属压力加工]