摘要
介绍了球墨铸铁轴承座的铸造工艺:采用中频感应炉熔炼,球化剂为锡磊T1型号球化剂,采用冲入法进行球化处理,处理温度为1 480℃;采用天山18-18型号孕育剂,进行炉前孕育和瞬时孕育。论述了初始模拟的条件与方法,采用呋喃树脂砂手工造型及底注式浇注系统,有利于对铸件法兰和轴承套连接处的热节进行补缩。根据初始方案模拟得到缩孔、缩松位置的分布和大小,确定了优化的铸造工艺方案。生产结果显示:在设计球墨铸铁轴承座铸造工艺时,采用合理的冒口和冷铁的设计方案,可以有效消除铸件内部的缩孔、缩松缺陷,获得合格的铸件。
The casting process and method of the nodular iron bearing seat was introduced：medium frequency induction furnace melting was used,Xi-beng T1 type nodularizing alloy was used,pour-over process was used to conduct nodularizing treatment,the treating temperature was of 1 480 ℃,Tianshan 18-8 type of inoculant was used to conduct tapping inoculation and instant inoculation. The conditions and method of primary simulation was described,furan resin sand manual molding and bottom gated gating system was used to favor feeding the hot spot between the casting flange and bearing sleeve. Based on the place distribution and size of the shrinkage cavities and porosities,the optimized casting method was determined. The production results showed：when designing the casting method of the nodular iron bearing seat,using rational feeder and chills design scheme could effectively eliminate the inner shrinkage cavity and shrinkage porosity defects and obtain qualified castings.
出处
《现代铸铁》
CAS
2017年第6期75-79,共5页
Modern Cast Iron
关键词
球墨铸铁
轴承座
模拟
nodular iron
bearing seat
simulation
