运用均衡凝固理论设计铸铁件的补缩溢流冒口.pdfVIP

学兔兔 铸 造 Oct．2008 ·l()94· FOUNDRY VO1．57 NO．1O 运用均衡凝固理论设计铸铁件的补缩溢流冒口 连 炜 ，朱建中。，魏 兵 (1．西安工业大学机电工程学院，陕西西安710032；2．湖州机床厂，浙江湖州303000； 3．西安理工大学材料学院，陕西西安710048) 摘要：为解决升降平台铸件环板交接处的收缩缺陷，采用侧注式浇注系统的对侧安置补缩溢流冒口，运用均衡凝固收 缩模数法设计冒口尺寸，用大孔出流理论设计浇注系统。生产的铸件表面光洁，无气孔、渣孔缺陷。机加工后铸件没 有缩孔、缩松缺陷，工艺出品率88．5％。证明采用均衡凝固理论设计补缩溢流冒口是可靠的。 关键词：铸铁件；补缩溢流冒口；均衡凝固工艺 中图分类号：TG244+．4 文献标识码：B 文章编号：1001—4977(2008)10—1094—03 Design of Feeding Overflow Riser of Cast I ron Elevating Pla rm by ProportionaI Solidification Theory LIAN Wei’，ZHU Jian—zhong ，WEI Bing。 (1．School of Mechanical and Electronic Engineering，Xi。an Technological University，Xi’an 71 0032， Shaanxi，China；2．Huzhou Machine Tool Factory，Huzhou 303000，Zhejiang，China；3．School of Material Science and Engineering，Xi’an University of Technology，Xi’an 710048，Shaanxi，China) Abstract：In order to solve the shrinkage defect of casting on the iunction of ring and plate，a side gating system iS used．in which a feeding overflow riser iS placed on the opposite side。The riser size iS designed by applying moduli calculation method of proportional solidification and the gating system iS designed by the Iarge orifice discharge theory．The casting produced has a smooth surface and no blowhole or sand inclusions．There iS no shrinkage or dispersed shrinkage after machining．The yield of the casting iS 88．5％．The results show that it iS reliable to design the feeding overflow riser by proportional solidification technology． Key words：iron casting；the feeding and ov