圆弧角对楔横轧轧件端部凹心的影响研究  

Effect of Circular Arc Angle on End Concavity of CWR Rolled Piece

作　　者：柳传 束学道[1,2] 

机构地区：[1]宁波大学机械工程与力学学院,浙江宁波315211 [2]浙江省零件轧制成形技术研究重点实验室,浙江宁波315211

出　　处：《热加工工艺》2015年第15期101-103,108,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(51475247);浙江省杰出青年科学基金项目(R1110646)

摘　　要：为了解决轧件头部质量从而提高材料利用率,提出将坯料端部设计成圆弧形的方法来实现对轧件端部凹心的控制。首先,通过DEFORM软件建立了楔横轧的有限元模型;然后,通过位移法分析了轧制过程中轧件端部金属的流动规律,得到了不同圆弧角对轧件端部凹心的影响规律;最后,通过实验验证了有限元分析的结论。结果表明,轧件端部凹心随着圆弧角的增大而减小,当圆弧角为90°时,轧件的端部凹心长度减少69.04%,证明将坯料端部设计成圆弧形的方法可以有效控制轧件端部凹心。结果能为实现楔横轧无料头轧制,提高材料利用率,降低生产成本奠定理论基础。In order to solve the quality of the rolled piece on end surface and improve the material utilization, the method of designing the blant by end surface into circular arc was presented to control the end concavity of the rolled piece. First,finite element model of the cross wedge rolling was established by DEFORM-3D software. Then,the flow law of metal of rolled piece on the end surface was analyzed by the displacement method, and the influence law of different circular arc angles on end concavity of rolled piece end surface was obtained. Finally, the conclusion of finite element analysis was verified by experiment. The results show that the concavity of rolled piece end surface decreases with the increase of the circular arc angle. When the angle is 90°, the end concavity of rolled piece reduces by 69.04%, which proves that the method of the blank end designing into a circular form can effectively control the concavity of rolled piece end surface. The results can lay the theoretical foundation for achieving the cross wedge rolling production without the stub bar, improving the utilization rate of material and reducing the cost of production.

关 键 词：楔横轧 端部凹心 圆弧角 

分 类 号：TG335.19[金属学及工艺—金属压力加工]