摘要
分析了熔模铸造缩孔、缩松及偏析产生的原因。通过试验研究,提出了两种熔模铸造冷铁激冷工艺解决方案。结果表明,通过“工”柱形冷铁或镶嵌式块状激冷工艺对铸件厚大部位进行冷却,铸件在浇注及凝固过程中能实现快速凝固,避免了铸件缩孔、缩松及偏析缺陷的出现,提高了工艺出品率。
The origination of dispersed shrinkage porosities(holes)as well as segregation in investment castings was analyzed.Through experiment analysis,two solutions of investment casting chilling process were put forward. The results show that the thicker areas of the casting can be cooled by the“I-beams”column block chill or inlaying block quenching process,and the castings can be rapidly solidified,thus avoiding shrinkage porosities (holes)and segregation defects,improving the production yield.
作者
刘焕文
陈素明
惠西胜
郭巧玲
Liu Huanwen;Chen Suming;Hui Xisheng;Guo Qiaoling(AVIC Xi′an Aircraft Industry(Group)Co.,Ltd.)
出处
《特种铸造及有色合金》
CAS
北大核心
2019年第10期1104-1105,共2页
Special Casting & Nonferrous Alloys
关键词
熔模铸造
冷铁
激冷工艺
Investment Casting
Cold Iron
Chilling Process
