摘要
采用Deform-3D数值模拟软件,对具有端部变形的楔横轧件成形过程中的材料流动规律和特点进行了计算机模拟仿真,结合实际生产和物理模拟实验,分析了轧件形成端部凹心的原因。提出采用锥形坯料的方式消除端头凹心,并通过数值模拟研究了锥角大小对轧件端头凹心深度的影响,得到了无端头凹心的坯料形状和尺寸。模拟结果表明,采用具有锥形端部的坯料成形楔横轧件可以减少甚至消除成形后轧件端头凹心缺陷,且端头凹心的深度随着端部锥角的减小而减小,当端部锥角为120°时,轧件端头凹心已经基本消除。
Using finite element simulation software Deform-3D, the material flow traits and principle during cross wedge roiling （CWR） process were simulated and combined with the physical simulation find production in practice, the reasons that cause concaves in the both sides of the billets in CWR process were analyzed. The method to avoid the concaves was brought forward by using taper billet, and the influence of the taper＇s dimension on the side concaves was studied. The simulation results show that the side concaves can be decreased and even eliminated by using billets with cone-shape sides, and the depth of the concave decreases with the almost flat without concaves when the tape angle is 120°.
出处
《锻压技术》
CAS
CSCD
北大核心
2013年第2期156-159,共4页
Forging & Stamping Technology
关键词
楔横轧
近净成形
端头凹心
数值模拟
cross wedge rolling （CWR） near net shape formingl decreasing of tape angle. The side of the workpeice is concaves numerical simulation
