中厚板轧机支承辊中心疏松压实过程的有限元模拟研究  

Finite Element Analysis on Compaction of Center Porosity during Forging of Heavy and Medium Backup Roll

作　　者：阚盈[1,2] 程明[2] 姚明星 宋鸿武[2] 张士宏[2] 张立文[1] 

机构地区：[1]大连理工大学材料科学与工程学院,辽宁大连116024 [2]中国科学院金属研究所,沈阳110016 [3]鞍钢重型机械有限公司,辽宁鞍山114042

出　　处：《精密成形工程》2013年第3期10-14,23,共6页Journal of Netshape Forming Engineering

基　　金：国家科技重大专项资助项目(2009ZX04014-081)

摘　　要：基于Gleeble热模拟压缩实验和Arrhenius方程建立了70Cr3Mo的本构模型,运用Deform-3D软件对支承辊的多工步锻造过程进行了有限元模拟,得到了镦粗和拔长过程中压下量和中心疏松密度的关系,对比研究了平板镦粗和锥板镦粗对中心压实的影响。Based on the hot compression experiment and Arrhenius equation, the finite element model for multi-stage forging process of backup roll was established. The relationship between height reduction and relative density of center porosity was obtained from simulation results. Comparative simulations were carried out to study the effect of compaction of center porosity of flat anvil and conical anvil upset.

关 键 词：支承辊 多工步锻造 有限元模拟 疏松压实 

分 类 号：TG316.2[金属学及工艺—金属压力加工]