摘要
介绍了灰铸铁电机座铸件的结构及技术要求,阐述了原生产工艺及铸件的金相组织中存在石墨长度不合格问题,探索并梳理了两种技术方案:(1)用铌铁合金对铜、锡元素进行替代展开试验,在确保铸件满足客户要求的前提下,降低铸件的生产成本;(2)采用降碳增硅的方法,强化瞬时孕育,细化铸铁的显微组织进而改善铸件的力学性能。通过多次试制,采用上述两种技术改进方案叠加的方法,既可以细化组织,使石墨长度控制在要求范围内,还可以降低生产成本。
The structure and technical requirements of a gray iron electric motor base was introduced,the former production technology and existing unqualified graphite length in casting metallurgical structure problem was described.Two technical solutions schemes were explored and arranged:(1)Using ferroniobium alloy to replace copper and tin and thereby to reduce casting production cost under condition of meeting client's requirement.(2)Using method of decreasing carbon-increasing silicon and strengthen instant inoculation to refine the microstructure of the cast iron and thereby to improve mechanical properties of casting.Through multiple trial production,using simultaneously above two technical improvement schemes could not only refined the structure,so that the length of graphite was controlled within the required range,but also reduced the production cost.
作者
陈中伟
张春林
郑建荣
陈加梁
CHEN Zhong-wei;ZHANG Chun-lin;ZHENG Jian-rong;CHEN Jia-liang(Tongxiang Hede Machinery Co.,Ltd.,Tongxiang 314500,China)
出处
《现代铸铁》
CAS
2024年第2期26-30,共5页
Modern Cast Iron
关键词
灰铸铁
电机座
金相组织
力学性能
gray iron
electric motor base
metallurgical structure
mechanical properties
