Research Progress on Precision Forming of Aero-Engine Superalloy Castings
ZHANG Pan1, WANG Donghong1, XIAO Chengbo2, ZHOU Leyao1, LEI Sixiong3, ZHENG Xing3, TAN Qingbiao1, XIA Xiaojiang1,4, HUANG Zhen1, SUN Baode1
1. Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, School of Materials Science
and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
2. Science and Technology on Advanced High Temperature Structural Materials Laboratory, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China;
3. AECC South Industry Co., Ltd., Zhuzhou 412002, China;
4. Zhejiang Institute of Mechanical & Electrical Engineering Co., Ltd., Hangzhou 310002, China
Superalloy castings such as aero-engine blades, turbine rear casings, and guides are core components of aero-engines. It is still difficult to manufacture castings with fully qualified size even though the material composition is completely known, which has become a challenge for independently developing aero-engine superalloy castings. Among all, investment casting is the main forming method of complex superalloy castings. Hence, this review comprehensively examined the development of investment casting technology for superalloys and analyzed casting defects such as shrinkage and compromised dimensional accuracy in the investment casting process. Additionally, the progress of domestic and foreign development in rapid prototyping of investment casting for aero-engine superalloy castings was introduced. Finally the research status of intelligent casting of aero-engine superalloy castings at home and abroad was summarized, and the development trend of precision forming technology for aero-engine superalloy castings was prospected.
2025, 
