[header] How to inspect parts using dye penetrant [title] Clean the part thoroughly using a suitable cleaner, acetone, aqueous degreasing, etc. [step] Allow the part to dry. Drying can occur using a hair-dryer or in air.
[header] How to inspect parts using dye penetrant [title] Clean the part thoroughly using a suitable cleaner, acetone, aqueous degreasing, etc. [step] Allow the part to dry. Drying can occur using a hair-dryer or in air.
If air-dried, allow enough time for the cleaning agent to evaporate from the defects. This may take several hours depending on the ambient temperature and cleaning material used on the part. If you use a hairdryer set to " low ", it doesn't perform well, which can cause breakage. If you use a hair-dryer set to " high ", dry the area well for several days before using dye as it can help keep pigmentation from spreading. [title] Make a stain-removing paste by mixing 1 tablespoon (15 ml) of hydrogen peroxide, ½ tablespoon (1 ml) of baking soda, and 1/8 teaspoon of rubbing alcohol together. [step] Brush the stain dry, and let it continue to soak overnight. [title] Work the dye solution into the area where the defect is located. [step] Once the area is cleaned, scrape off the excess dye from the substrate.