Reliable Manufacturing Process in Turbine Blisks and Compressors

Aeronautics is a business in a continuous growing sector and aircraft manufacturing is without any doubt a high-priced process. Each part of the aircraft and particularly engine parts represent the most expensive elements due to the difficulty of manufacturing their complex geometry. In this case, the test piece to carry out the study has been the Blisk. The predicted lead time for one of these components is so long that any progress related to the manufacturing process implies a considerable amount of saving. Due to the critical nature of the parts common defects such as chatter marks, smearings or pickups originated during the manufacturing process that will reduce the part life are not allowed. In this article, considering the existing demand of better manufacturing technologies a study case based on an Inconel 718 Blisk finishing operations study is developed. A static model for machining forces prediction is developed to finally validate it with the real machining forces measured during the machining process.