800MN模锻液压机主缸缸底锻件关键成形技术的研究  

Key Forming Technologies for Main Cylinder Bottom Forging in 800 MN Die-Forging Hydraulic Press

作　　者：张清华[1] 刘鑫刚[2] 祁荣胜[2] 金淼[2] 郭宝峰[2] 

机构地区：[1]中国第二重型机械集团公司,四川618013 [2]燕山大学机械工程学院,河北066004

出　　处：《大型铸锻件》2010年第6期1-5,共5页Heavy Casting and Forging

基　　金：高档数控机床与基础制造装备科技重大专项(项目编号:2009ZX04005-011)

摘　　要：利用数值模拟的技术,研究了采用平面、球面、锥形砧型时,800 MN模锻液压机主缸缸底锻件镦粗过程中锻件内部的应变、静水应力以及心部孔洞尺寸的变化情况。通过对不同砧型时锻件内部等效应变、静水应力、孔洞闭合程度以及镦粗工艺力的考察,得到了球面砧优于另外两种砧型的结论。The distribution of strain and hydrostatic stress and the dimensional change of void in the center of main cylinder bottom forging of 800 MN die-forging hydraulic press during upsetting with plane anvil,spherical anvil and tapering anvil have been investigated by numerical simulation.The conclusion that spherical anvil is superior to other two types is obtained through examining the distribution of strain and hydrostatic stress,void closure and upset force under different kinds of anvils.

关 键 词：缸底锻件 镦粗 砧型 孔洞 

分 类 号：O242[理学—计算数学]