基于尺寸检测的预燃烧室熔模铸件工艺改进  

Technical Improvement of Pre-Combustion Chamber Investment Casting Based on Dimensional Inspection

作　　者：吴代建[1] 张光明[1] 彭显平[1] 何敬德 傅骏[1] WU Dai-jian;ZHANG Guang-ming;PENG Xian-ping;HE Jing-de;FU Jun(Department of Material Engineering,Sichuan Engineering Technical College,Deyang 618000,Sichuan,China)

机构地区：[1]四川工程职业技术学院材料工程系,四川德阳618000

出　　处：《铸造》2018年第8期699-702,共4页Foundry

基　　金：德阳市重点科技支撑计划项目资助(2015ZZ046);院级教育教学研究课题项目资助(GG201676202).

摘　　要：介绍了一种利用尺寸检测结果来改进熔模铸件工艺设计和生产的方法。通过对蜡模和铸件扫描模型的尺寸和表面空间点进行偏差检测和数据分析,得出了影响铸件尺寸和表面质量的各项因素。结果表明:采取降低铸造收缩率的取值,对模具型腔加工精度进行检测,增设金属芯头,强化现场制模、打磨工艺的执行等措施,降低了预燃烧室铸件因表面品质而产生的废品率,应用效果明显。This paper presents a method ofimproving the design and production ofinvestment castings based on the dimensional inspection results. Multiple factors that affect the size and surface quality of the castings are derived through the size deviation detection and data analysis of the 3D scanned surfaces of the wax patterns and practical castings. The results show that by taking measures such as reducing the value of casting shrinkage, checking the machining accuracy of the mold cavity, adding the metallic core head, and strengthening the execution of on-site pattem making and the grinding processes, the scrap rate of the pre-combustion chamber castings due to the surface quality has been reduced. The application effect is obvious.

关 键 词：尺寸检测 熔模铸造 工艺 

分 类 号：TG249.5[机械工程—精密仪器及机械]