大锻件内部孔洞闭合研究  

Research on Internal Void Closure of Large Forgings

作　　者：李晗 张雪姣 Li Han;Zhang Xuejiao

机构地区：[1]天津重型装备工程研究有限公司,天津300457

出　　处：《一重技术》2023年第4期46-50,共5页CFHI Technology

摘　　要：介绍大锻件内部孔洞形成原因,指出影响孔洞机械性闭合的因素有锻件高径比、孔洞位置、孔洞形状及应力三轴度,而影响孔洞焊合的因素有压力、温度、保温时间、剪应力及冷却方式,提出孔洞闭合的判据,为制定大锻件生产工艺提供依据。This paper introduces the causes of internal void in large forgings and indicates that the factors influence mechanical closure of the void including height-diameter ratio of the forging,void position,void shape and stress triaxiality,and the factors influence welding closure of the void including pressure,temperature,holding time,shearing stress and cooling method.This paper also proposes criteria of void closure to provide basis for determining production processes of large forgings.

关 键 词：孔洞闭合 机械性闭合 焊合 孔洞闭合判据 

分 类 号：TG316[金属学及工艺—金属压力加工]