At the beginning of repair process, it is necessary to remove the old coating. This is carried out with a combination of Al2O3 grit blasting and acid stripping. There are different acid solutions for different coatings, with controlled working conditions.
Cleaning processes which are used in Shahriar Turbine Components are as below:
- Al2O3 grit blasting
- Chemical Vapor Degreasing
- Ultrasonic Cleaning
Appropriate cleaning practice is one of key factors to achieve successful repair process such as coating, welding and inspections.