Additive manufacturing of components in the aerospace industry are being pursued by a number of different organizations. As the part families expand both in type and volume, there is a growing need to modify the surfaces of these parts to meet the final application requirements in a cost-effective manner. Some of these manufactured components have a simple geometry and some are very complex. Since the additive process produces components in near-net shape, there is often very little stock that remains on these components for providing final finish. Therefore any post-processing finishing methods that are employed need to be extremely consistent in achieving part tolerances and surface quality.
This presentation will demonstrate the results from a finish grinding study conducted on additively manufactured nickel-based superalloy (IN718) and titanium alloy (Ti64) specimens that are used for various applications in the aerospace industry. Results will include grinding process performance measures such as power, material removal rates, grinding forces as well as 3-D surface finish maps, and metallurgical analysis data of the ground specimens.
- Understand the advantages of selecting grinding as a process for finishing of additively manufactured components
- Know the surface quality of ground specimens
- Understand the grinding products and processes used for nickel based alloys and titanium alloys
Why Is It Important?
This topic is important to the audience because there is very little information available currently on what finishing methods work best for finishing of additively manufactured components from the perspective of surface quality and surface integrity. This presentation will demonstrate that grinding is a suitable process of choice when close tolerances and fine finishes are required regardless of a component’s original fabrication processes.