直缝焊管成形过程划伤问题的数值仿真分析  

Analysis on Surface Scratching by Numerical Simulation in Forming Process of Butt-welded Pipe

作　　者：吴军[1] 隋凤利[2] 何寅钦 毕洪运[3] 

机构地区：[1]宁波宝新不锈钢有限公司,浙江宁波315807 [2]安徽工业大学材料科学与工程学院,安徽马鞍山243002 [3]宝山钢铁股份有限公司研究院不锈钢技术中心,上海200431

出　　处：《轧钢》2013年第3期32-34,共3页Steel Rolling

摘　　要：基于弹塑性有限元法建立了激光直缝焊管成型过程的有限元分析模型,分析了焊管表面深度划伤的产生原因和解决措施。结果表明,深度划伤产生的根本原因是由于板带与水平辊下辊接触点位置线速度与轧辊旋转速度不匹配。通过数值分析,在合理控制水平辊辊缝保证焊缝成型的基础上,获得板带与下辊辊面接触弧的平均辊径,并计算了避免焊管表面划伤的合理的下辊旋转速度。Based on elastic-plastic finite element method, the finite element model for the forming process of butt-welded pipe has been developed and the reasons for surface scratching has been analyzed. Meanwhile, the solution measures were proposed. It would lead to the surface scratching only as the linear velocity of the strip not accord with the rotational speed of the roll at the contact points. The appropriate rotational speeds of the rolls were calculated by the finite element analysis.

关 键 词：直缝焊管 数值仿真 弹塑性有限元 表面划伤 转速 

分 类 号：TG335.71[金属学及工艺—金属压力加工]