一种大型涡轮壳体试制工艺改进  

Improvement of Trial Manufacture Process of A Large Turbine Shell

作　　者：赵东升[1] 王科社 李智[3] 姚进军[3] 胡博[3] 贺焱[3] 李茜 

机构地区：[1]海军驻兴平地区军事代表室,陕西兴平713005 [2]西安艾韦机电科技有限公司,陕西西安710054 [3]中国船舶重工集团公司第十二研究所,陕西兴平713002

出　　处：《热加工工艺》2017年第19期75-77,74,共4页Hot Working Technology

摘　　要：通过分析某大型涡轮壳体毛坯(简称涡壳)的结构特点,设计了铸造工艺,在其试制过程中解决了砂芯设计错误、缩尺比例不当等问题。最终采用改进的工艺生产出合格的涡壳铸件。结果表明:铸件较大尺寸方向上的缩尺大于理论值;为保证流道质量,砂芯不可设计为悬浮芯,应进行固定。By analyzing the structural characteristics of a large turbine shell, the casting process was designed, and the errors of sand core design and the improper shrinkage scale were solved during the trial manufacture. Finally, the improved process was used to produce qualified turbine shell castings. The result shows that the scale in large direction of the casting is bigger than the theoretical value. In order to ensure the quality of runner, the sand core can not be designed as suspension core, and it should be fixed.

关 键 词：涡轮壳体 铸造 砂芯设计 缩尺 

分 类 号：TG242[金属学及工艺—铸造]