1st Stage blades in IGT25.
Material: IN738LC.
Manufacture process: investment vacuum casting.
Testing:
1. Chemical component analysis.
2. Mechanical property.
3. Grain size.
4. Visual and fluorescent inspection.
5. X-ray testing.
6. Dimension check.
7. Microstructure
Treatment:
Heat treatment.
Investment vacuum castings for aviation parts, gas turbine for power generation, military armament, marine and railway applications.