径向精密锻造机V字锥形锤砧锻造分析及数值模拟  

Deformation Analysis and Numerical Simulation of V-shaped Cone Anvil Forging in the Fine Forging Machine

作　　者：王连东[1] 高全德 梁晨[1] 刘助柏[1] 张健 刘唯唯[1] 

机构地区：[1]燕山大学车辆与能源学院,秦皇岛066004 [2]中原特钢股份有限公司,济源454692

出　　处：《机械工程学报》2011年第20期146-151,共6页Journal of Mechanical Engineering

摘　　要：为改善精密锻造机锻造轴类件横向性能,设计一种新型锤砧——V字锥形锤砧,即在普通锤砧定径区两侧的主工作斜面上堆焊开口相反的两个V字锥形突起。对V字锥形下端的金属流动情况及坯料子午面与横截面上的变形进行分析,运用DEFORM软件对普通锤砧锻造与V字锥形锤砧锻造进行数值模拟,比较选定的5个横截面上典型点的应力应变,结果表明:使用V字锥形锤砧锻造,增加了金属的横向流动性,变形区的等效应变等效应力增大;减小了变形差异程度,横截面上各点的变形差异程度减小30%以上;改善了轴线心部的应力状态,中心点的轴向拉应力减小50%。生产实践表明,使用V字锥形锤砧替代普通锤砧锻造芯轴,有效提高了锻件的力学性能。A new type V-shaped cone anvil is developed to improve the transverse mechanical property of axial forgings in fine forging machine.Two V-shaped cone whose opening opposite is welded by piling up on the main working inclined planes which being located both sides of the fixed diameter area of the anvil.The mobility of the metal under the V-shaped cone and the deformation on the meridian plane and the transverse section is analysed,the numerical simulation is done for common anvil forging and V-shaped cone anvil forging with the DEFORM soft,and the results is compared for the stress and strain at the typical points on the chosen five transverse sections.It is revealed that when V-shaped cone anvil is used,the transverse mobility of metal is enhanced,the equivalent stress and equivalent strain increased,the deformation diversity decreased by 30%,the stress state in the zone around the axis improved,and the axial tension stress at the central point cut down by 50%.It is revealed by the production of the mandrel forgings that the mechanical property is raised effectively.

关 键 词：精密锻造机 锤砧 锻造 数值模拟 

分 类 号：TG316[金属学及工艺—金属压力加工]