Dye Penetrant Inspection works well for a variety of product forms including castings, forgings and weldments. The structural steel, automotive, petrochemical, power generation and aerospace industries utilize liquid penetrant inspection.
Wet Blasting has become indispensable in MRO, with distinct advantages for DPI and other non-destructive inspection techniques.
Surface Cleaning and Prep
Wet Blasting removes coatings and strips metal parts or composites clean and ready to accept Dye Penetrants and Developers. Pressurized wet slurry removes dirt, paint, oil, grease or any loose scale could potentially keep penetrant out of a defect, or cause irrelevant or false warnings. Be sure that the test chemicals are compatible with the surface material to prevent permanent staining or surface degradation. Unlike dry blasting, wet blasting does not leave particles embedded in the surface, and won’t fill or hide discontinuities in the surface of the part.
Removal of Dyes and Developers
After inspection, it’s imperative to remove any remaining chemicals as they may be detrimental to part life over time. Here again, you can use wet blasting to efficiently clean and prep the surface for any necessary repairs.
Surface Finishing After Repairs
The distorting effects of force, and wear on the surfaces of parts, may require tip welding or other additive repairs. Wet blasting may be a good alternative to machining for restoring the geometry of parts that have been repaired by welding or LPM™. Wet blast equipment offers precise control in terms of the angle, abrasiveness and pressure required to accurately achieve the right dimensions, alignment and surface characteristics.
https://www.sciencedirect.com/topics/engineering/penetrant-inspection
https://www.liburdi.com/engineering-services-proc-powder-metallurgy
https://www.toprovelab.com/en/test/non-destructive-tests-penetrating-liquids
