硅钼球墨铸铁排气歧管缩松的解决
Solution to Shrinkage of Silicon Molybdenum Ductile Iron Exhaust Manifold
崔志学 1王珊 1李小娟 1党波涛 1李志 1张恒 1赵新武1
作者信息
- 1. 西峡县内燃机进排气管有限责任公司,河南西峡 474500
- 折叠
摘要
用原有球墨铸铁浇注工艺生产的硅钼耐热球墨铸铁排气歧管铸件,由于硅钼耐热球墨铸铁的流动性更差,排气歧管壁厚差大,孤立热节多,补缩困难.因此在铸件多个孤立螺栓根部产生缩松,缩松达到100%,在均衡凝固浇注系统工艺设计指导下,利用接触热节和靠近热节生产出质量优良的排气歧管,缩松得以消除.
Abstract
Due to the poor fluidity of Si-Mo heat-resistant ductile cast iron,the exhaust manifold castings of Si-Mo heat-resistant ductile cast iron produced by the original process of ductile cast iron has a large wall thickness difference,there are also many isolated heat joints which are difficult to fill.Therefore,shrinkage is produced in the roots of several isolated bolts in castings,and the shrinkage reaches 100%.Under the guidance of the process design theory of the balanced solidification pouring system,the exhaust manifold with good quality is produced by using the contact and close to the hot joint,and shrinkage can be eliminated.
关键词
排气歧管/硅钼/球墨铸铁/热节/均衡凝固/缩松Key words
exhaust manifold/silicon molybdenum/nodular cast iron/heat joint/balanced solidification/shrinkage引用本文复制引用
出版年
2024
NETL
NSTL
万方数据