电梯轮毂铸件的EPS壳型工艺开发  

Development of EPS Shell Mold Process for Elevator Hub Castings

作　　者：刘天平 李泽同 李泽嘉 王爱丽 黄乃雄 LIU Tian-ping;LI Ze-tong;LI Ze-jia;WANG Ai-li;HUANG Nai-xiong(Anyang KCST Co.,Ltd.,Anyang 456150,China;Henan Kaizhong High Tech Materials Co.,Ltd.,Anyang 456174,China;Jimei University,Xiamen 361021,China;Northeast Petroleum University,Daqing 163318,China;Foshan Shunde Lunjiao Shibian Xionghe Casting Factory,Foshan 528308,China)

机构地区：[1]安阳市凯创科技有限公司,河南安阳456150 [2]河南凯中高新材料有限公司,河南安阳456174 [3]集美大学,福建厦门361021 [4]东北石油大学,黑龙江大庆163318 [5]佛山市顺德区伦教仕版兄合铸件厂,广东佛山528308

出　　处：《现代铸铁》2024年第4期34-37,共4页Modern Cast Iron

摘　　要：针对采用呋喃自硬树脂砂、静压造型成形工艺生产的铸件在环状厚大部位中心处存在较严重的缩孔、缩松问题,提出了壳型精密成形工艺方案,基于高密度EPS雕刻白模,涂覆数层无机浆料和骨料,经烘干焙烧,制成强度高、内壁洁净、轮廓完整的壳型,埋置于陶粒砂中,在负压紧实状态下浇注金属液,提高金属液充型、凝固及补缩能力,得到了组织致密、外观光洁的精密铸件。壳型精密成形工艺采用物理条件控制和无粘结剂陶粒砂,过程易于控制,稳定可靠,循环使用,绿色环保,保证产品质量,综合效益显著。To address the severe shrinkage and porosity issues observed in the central,thick,annular sections of castings produced using furan self-hardening resin sand and static pressure molding processes,a shell mold precision forming process was proposed.This process utilized high-density EPS carved white patterns,coated with multiple layers of inorganic slurry and aggregate.After drying and firing,a high-strength shell mold with a clean inner surface and complete contours was created.This shell mold was embedded in ceramic sand and metal was poured under negative pressure compaction conditions,enhancing the metal's filling,solidification,and feeding capabilities.A dense,smooth-surfaced and precision casting was produced.The shell mold precision forming process employed physical condition control and binder-free ceramic sand,making the process easy to control,stable,reliable,reusable,environmentally friendly,and capable of ensuring product quality with significant comprehensive benefits.

关 键 词：球墨铸铁 轮毂 壳型 

分 类 号：TG255[金属学及工艺—铸造]