90 t工作台铸件地坑造型工艺开发  

Pit Molding Process Development of 90 t Operating Platform Casting

作　　者：李丹 何俊蒙 赵红霞 李志博 周桂梅 LI Dan;HE Jun-meng;ZHAO Hong-xia;LI Zhi-bo;ZHOU Gui-mei(Foundry,Qiqihar Heavy CNC Equipment Co.,Ltd,Qiqihar 161005,China)

机构地区：[1]齐重数控装备股份有限公司铸造厂,黑龙江齐齐哈尔161005

出　　处：《现代铸铁》2022年第6期36-39,共4页Modern Cast Iron

摘　　要：介绍了90 t工作台的铸件结构及技术要求,详细阐述了该铸件的铸造工艺:采用地坑造型、树脂砂工艺,共采用151块砂芯;浇注系统各组元的截面积比为∑F直:∑F横:∑F阻:∑F内=1.35:1.99:1:1.87,采用100个φ60 mm的补缩冒口,保证铸型的出气、集渣和补缩;在铸型上方压砂箱,有箱带的一面朝向下,与铸型接触,并保证铸件上的压箱质量为浇注质量的5倍以上;利用20 t中频感应电炉熔炼铁液,100 t铁液经过多次倒包、提温熔化和孕育处理后浇注铸件。生产结果显示:铸件的各项指标符合技术要求。The casting structure and technical requirements of 90 t operating platform were introduced,its casting method was described in details:using pit molding,using resin sand process,totally 151 pcs sand cores were used,the ratio of gating system elements was:∑Fsprue:∑Frunner:∑Fskimming:∑Fingates=1.35:1.99:1:1.87,100 pcsφ60 mm rises were used to ensure mold venting,slag skimming,and feeding.Using molding box to press the sand mold with the box ribs downwards and contacting the mold,and it was ensured that the pressing mass was bigger than 5 times of pouring mass.Using 20 t medium frequency induction furnace to melt iron liquid.After being multiple times reladled,temperature elevating melting and inoculation treated,100 t iron liquid was used to pour the casting.Production result showed:all quality specifications were met technical requirements.

关 键 词：灰铸铁 工作台 地坑造型 铸造工艺 

分 类 号：TG251[金属学及工艺—铸造]