摘要
介绍了GGG-NiMn13-7奥氏体球墨铸铁件支撑的化学成分、炉料配比、球化和孕育处理、热处理工艺的选择及铸造工艺的设计。通过加入微量元素Sb提高石墨的圆整度;选用合理的冒口类型防止缩松和缩孔;采用高温出铁,快速浇注的方法避免皮下气孔;成功试制出符合技术要求的支撑铸件。
The chemical composition, charge ratio, spheroidization & inoculation treatment, heat treatment process selection and casting process design of GGG-NiMn13-7 austenitic ductile iron castings support have been introduced. The roundness of graphite has been improved by adding trace element Sb;the reasonable riser type has been used to prevent shrinkage;high temperature tapping has been selected, and rapid pouring method has been adopted to avoid subcutaneous pores. The support castings which meet technical requirements have been successfully produced.
作者
陈庚
孙莹
李崇斌
刘勤鹏
CHEN Geng;SUN Ying;LI Chongbin;LIU Qinpeng(CRRC Dalian Co., Ltd., Dalian 116021, Liaoning China)
出处
《中国铸造装备与技术》
CAS
2019年第3期51-54,共4页
China Foundry Machinery & Technology
关键词
高镍奥氏体球墨铸铁
支撑
材质
铸造工艺
High nickel austenitic ductile iron
Support
Material
Casting process
