控制大型饼类锻件夹杂性缺陷的镦粗成形工艺研究  

The Research of the Upsetting Process for Controlling the Inclusion defects in Heavy Disk Forgings

作　　者：韩静涛[1] 张永军[1] 赵中里[1] 薛永栋[1] 刘均贤[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《大型铸锻件》2007年第1期1-5,共5页Heavy Casting and Forging

摘　　要：镦粗变形是大型饼类锻件的主要成形方式,夹杂性缺陷是其主要质量问题。镦粗变形使锻件心部的塑性夹杂有可能成为片状,这种片状夹杂在一定的力学条件下会产生微观乃至宏观裂纹。因此控制夹杂物的变形并防止产生夹杂裂纹是饼类锻件锻造工艺所要研究的主要内容。为此,本文分别研究了旋转进砧法、梅花布砧法、排砧法和圆弧砧法等四种镦粗工艺条件下,大型饼类锻件心部夹杂物的变形、金属变形及损伤因子的分布情况。分析结果认为旋转进砧法可以有效控制锻件内部的夹杂物形貌。The upsetting deformation is the main forming mode for heavy disk forgings and the inclusion defects is the main quality issue.The upsetting deformation made it possible that the plastic inclusions in forgings core turn into sheet inclusions which could produce microcracks and macrocracks in certain mechanical conditions,in this case to control the inclusions deformation and prevent the cracks forming from inclusions is the main content for the disk forgings process research.This article has described the c...

关 键 词：大型饼类锻件 夹杂性缺陷 镦粗成形 

分 类 号：TG316[金属学及工艺—金属压力加工]