球墨铸铁水套排气歧管铸造工艺  

Ductile Iron Water-Jacket Exhaust Manifold Casting Process

作　　者：李党育 李小娟 LI Dang-yu;LI Xiao-juan(School of Intelligent Manufacturing,Nanyang Institute of Technology,Nanyang473000,Henan,China;Xixia Internal Combustion Engine Intake&Exhaust Manifold Co.,Ltd.,Xixia 474500,Henan,China)

机构地区：[1]南阳理工学院智能制造学院,河南南阳473000 [2]西峡县内燃机进排气管有限责任公司,河南西峡474500

出　　处：《铸造》2025年第1期124-128,共5页Foundry

基　　金：河南省科技计划自主创新产品专项(172205211035)。

摘　　要：针对水套排气歧管的结构特点和性能要求,采用湿砂型工艺生产,应用均衡凝固技术设计了补缩和浇注系统。通过砂芯定位与排气结构合理设计,并使用高强度、粗粒度覆膜砂制芯,提高了铸件尺寸精度和砂芯的透气性和排气性。详细介绍了熔炼、制芯、造型、浇注、清理等关键生产环节的控制要点,成功研发了球墨铸铁水套排气歧管。According to the structural characteristics and performance requirements of the water jacket exhaust manifold,applying the production process of green sand mold,the feeding and gating systems have been designed based on the balanced solidification technology.Through reasonable designs of the sand core location and exhaust structure,and making the cores by using of high strength and coarse-grained precoated sand,the casting size accuracy and the permeability and exhaust property of the sand cores are improved.The control points of smelting,core making,molding,pouring,cleaning and other key production links are introduced in details,and the ductile iron water jacket exhaust manifolds are successfully developed.

关 键 词：水套排气歧管 铸造工艺 球墨铸铁 热芯盒法制芯 

分 类 号：TG255[金属学及工艺—铸造]