January 9, 2018
This video demonstrates how to do dye penetrant inspection using color-contrast penetrant in visible light.
Clean the part by spraying SKC-S onto the surface. Next, wipe the part dry with a clean cloth.
Apply the penetrant to the test area. Allow the penetrant to dwell for 10-30 minutes. Then, remove the excess penetrant by wiping the part down using a clean dry cloth.
Apply the developer to the test area. Allow the developer to dwell for 10-60 minutes.
Examine the part for any bright, clear indications.
Secondary processing and finishing discontinuities are associated with the various finishing operations, after the part has been rough formed by rolling, forging, casting or welding.
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When steel ingots are worked down into usable sizes and shapes such as billets and forging blanks, some inherent discontinuities may appear.
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