大型轴承箱体铸件粘砂和油槽不通的工艺改进  

Technological Improvement of Sticky Sand and Oil Tank in Large Bearing Box Casting

作　　者：汤彦 陈建军 TANG Yan;CHEN Jian-jun(Foundry,Qinchuan Machine Tool&Tool Group,Baoji 721009,China)

机构地区：[1]秦川机床工具集团股份公司铸造厂

出　　处：《现代铸铁》2020年第1期42-44,53,共4页Modern Cast Iron

摘　　要：介绍了大型轴承箱体铸件的结构和技术要求,详细阐述了原生产工艺及油槽处存在的粘砂和铁包砂问题,对缺陷位置进行原因分析后,采取了相应的防止措施:在原工艺的基础上,调整浇注系统,控制浇注温度,采用保温冒口材料制作镶嵌结构的油槽芯。生产结果显示:铸件表面良好,内部光滑,有效解决了扁而宽大油槽部位易产生粘砂、铁包砂的问题。与原工艺相比,铸件易于清理,达到了使用要求,又降低了铸件清理工作量,显著提高了箱体铸件的成品率。The structure and technical requirements of large-scale bearing box castings were introduced.The original production process and the problems of sticky sand and iron-clad sand at the oil tank were explained in detail.After analyzing the cause of the defect location,corresponding preventive measures were taken:based on the original process,the pouring system was adjusted,the pouring temperature was controlled,and the heat sink riser material was used to make the oil tank core with an inlay structure.The production results showed that the surface of the casting was good and the interior was smooth,which effectively solved the problem of easy sticky sand and iron-clad sand in the flat and wide oil tank.Compared with the original process,the castings were easy to clean,which met the requirements for use,reduced the cleaning work of the castings,and significantly improved the yield of the box castings.

关 键 词：球墨铸铁 轴承箱体 油槽 粘砂 

分 类 号：TG255[金属学及工艺—铸造]