Abstract
Manufacturing techniques applied to turbomachinery components represent a challenge in the aeronautical sector. These components are commonly composed of high resistant super-alloys; in order to satisfy the extreme working conditions, they have to support during their useful life. Besides, in the particular case of Integrally Bladed Rotors (IBR), they usually present complex geometries that need to be roughed and finished by milling and grinding processes, respectively. Thermoresistant superalloys present many challenges in terms of machinability what leads to find new alternatives to conventional manufacturing processes. In order to face this issue, this work presents a review of the last advances for IBR manufacturing and repairing processes.
Highlights
The aeronautical industry is considered one of the strategic sectors of the global market
Turbomachinery rotary components in aircraft engines, mainly in the compressor and turbine stages, present a complex geometry composed of a series of bladed discs distributed along the same rotor
Coated the toolattypes recommended fortools with blisk corner radius are one alternative to be used in order to avoid the excessive wear suffered and impeller manufacturing processes
Summary
The aeronautical industry is considered one of the strategic sectors of the global market. According to the Spanish Association of Defense, Aeronautics and Space Technology Companies (TEDAE), this sector generates a total revenue of 7.8 billion EUR, from which 11% is assigned to R&D&I (Research, Development and Innovation) activities [1] For this purpose, it is necessary to work on the improvement of new components and in looking for new innovative processes, alternative to conventional manufacturing processes, and optimizing cutting tools, tool-paths, machining strategies and material properties. Turbomachinery rotary components in aircraft engines, mainly in the compressor and turbine stages, present a complex geometry composed of a series of bladed discs distributed along the same rotor. Blade geometries are complex and present optimization is the principal target for large aeronautic engine manufacturers. They combine different and microstructures for theand discmicrostructures and blades with complex and present cooling ducts.
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