Analysis and prospects of efficient and precise forming technology for aeroengine turbine shafts

Abstract

The turbine shaft is a crucial core component of aeroengines, made of difficult-to-deform high-temperature alloy materials, characterized as a long hollow stepped shaft with deep internal holes. Achieving efficient, high-perfor-mance, and precise manufacturing of turbine shafts is a cutting-edge issue urgently needing resolution in the field of aeroengine manufacturing. Currently, the forming process for turbine shafts mainly involves forging the external shape, followed by machining the outer profile and drilling the internal holes, which presents problems such as low efficiency and high material consumption. This paper analyzed the principles and characteristics of advanced forming processes for shaft components, including cross-wedge rolling (CWR), three-roll skew rolling (TRSR), as well as piercing and cross rolling integration (PCRWI). This paper expounded the principles and characteristics of these process forming turbine shafts. The research results show that the short-process flexible forming method of piercing-rolling integration can make the outer profile and inner hole of the turbine shaft synchronously formed. This process can effectively realize the high-quality, high-quality and efficient production of the turbine shaft. Therefore, this process is the development direction of accurate plastic forming of aeroengine turbine shaft. The research results have significant theoretical value and practical engineering implications for enhancing the overall manufacturing capability of aeroengines.