The process is modeled and validate:
The laser bores the plasma surface without penetrating the metal surface.
Precise drilling without impacting neighboring vanes. The focal point of the laser is sized for the vane opening concentrating its energy on the plasma spray over it.
The laser drilling process is so accurate that we can bore only the plasma material without distorting the metal below.
When a turban vane is plasma sprayed some vanes may be completely hidden from view
The laser completely vaporizes the surface of the plasma spray covering the vane and only targets the material on the inner perimeter of the vane. In addition, cut away samples confirm that no foreign material can be found within the vane.
The final part of the process is the diamond grind. Each hole entry is aligned with the axial axis of the vane. In addition, the finished conic entry of the vane is the same from vane to vane.
The total process time per hole is in the order of 10 seconds. Most importantly the life of the diamond bit is extended by 300%. The combination of robot, laser, and grinding significantly reduces process time and consumable cost..
Proof of concept with exceptional results.