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Waterjet Capabilities for Aeroengine Manufacturing Need

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Waterjet Capabilities for Aeroengine Manufacturing Need

 

This paper addresses waterjet technology capabilities for many aeroengine applications.  While this technology has been demonstrated successfully for processing certain features and parts, only limited number of applications were implemented benefiting from its unique advantages such as high parts integrity and no heat affected zones.  Now, with the continued introduction of new materials such as CFRP, aluminides, and CMCs into aeroengines, waterjets may be enabling tools with additional benefits such as higher productivity and versatility for rapid insertion of these materials.  We will address shape cutting, trimming, milling, drilling, turning, and surface preparation relevant applications.  The shape cutting, and near net shaping of metallic parts such as Titanium, Inconel, and gamma Titanium Aluminide will be discussed showing the benefits in productivity, and parts integrity.  For example, Titanium fan blades are now being rough-cut out of 6-inch thick disks with abrasive waterjets (AWJs) for some jet engines.  The trimming capability of the AWJ process for CFRP fan blades is being implemented and will be discussed.  The potential for trimming CMC parts such as SiC/SiC blades is also discussed with recommendations on future activities for higher cost effectiveness.  Parts with thermal barrier coating (TBC) were drilled for combustor liners film cooling, and tiles of gamma titanium aluminide were pocket milled for exhaust section cooling.  The use of waterjets for TBC stripping has been in use in the MRO industry and will be discussed here.  Future applications such as waterjet peening and surface texturing are highly promising with environmental advantages and will also be presented.

 

Authors: Mohamed Hashish

 

Conference: CAMX 2016 – Anaheim

 

SKU/Code: TP16-0009

 

Pages: 21


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