Aerospace components used in the high and low pressure sections of a turbine engine are made from materials such as high nickel-based super alloys, ceramic matrix composites (CMC) and or intermetallics such as gamma titanium aluminide. These sections that may be cast, forged or sintered using powder metallurgy techniques, are notorious for being difficult to machine due to their high strength, corrosion and fatigue resistance, and low thermal conductivity. Traditionally approach involves use of turning, milling and broaching processes to remove most or all of the stock from these components. However, modern grinding wheels composed of shaped/engineered grains and high strength bond can remove the material more quickly and economically than turning or milling. This presentation will show data/results of the surface grinding and creep feed grinding tests done on grinding of gamma titanium aluminide and IN718 with conventional abrasive grinding wheels as well superabrasive grinding wheels. Also included will be results from the grinding of Ceramic Matrix Composites (CMC) with superabrasive grinding wheels.
- Compare grinding of gamma titanium aluminide with alternative material removal technologies such as EDM, Machining etc.
- Understand grinding performance (power, specific energy and wheel wear) when grinding ceramic matrix composites (CMC)
- Compare grinding of high Ni based Superalloys such as IN718, Waspalloy with machining of these materials