定向导向器叶片熔模铸造工艺研究  

Study on Investment Casting Process of Directional Guide Blade

作　　者：杨武 林时波 钟倩 YANG Wu;LIN Shi-bo;ZHONG Qian(China Aviation Gas Turbine Company Limited,Shenyang 110015,Liaoning,China;China Airline Shenyang Liming Company,Shenyang 110043,Liaoning,China)

机构地区：[1]中国航发燃气轮机有限公司,辽宁沈阳110015 [2]中国航发沈阳黎明公司,辽宁沈阳110043

出　　处：《铸造》2020年第7期752-755,共4页Foundry

摘　　要：通过对导向器叶片的陶瓷型芯制造工艺、型壳制造工艺、铸件的熔注工艺等进行了系统研究,确定了定向凝固技术在复杂结构、空心、无余量导向器叶片上应用的工艺规范,消除了导向器叶片定向凝固过程中截面突变区裂纹及大缘板疏松缺陷,解决了复杂内腔结构叶片偏、漏、断芯问题。Through systematic study on the ceramic core manufacturing process,shell manufacturing process and investment casting process of the guide blades,the technical specifications of directional solidification technology applied to guide blades with complex structure,hollow and no allowance were determined.The crack in section abrupt change region and porosity in large flange plate were eliminated,and the problems of blade deviation,leakage and core breakage in complex inner cavity structure during directional solidification of guide blades were also solved.

关 键 词：定向凝固 无余量叶片 陶瓷型芯 裂纹 疏松 

分 类 号：TG149.5[一般工业技术—材料科学与工程]