American Machinist

Shedding some light on coating problems. (Technology Trends).

A NEW COATING SYSTEM LETS manufacturers use ultraviolet (UV) light to detect defects. Developed by NCP Coatings Inc., Niles, Mich., the Optically Active Coating System (OACS) adds an exclusive UV-light-sensitive pigment to paints and coatings.

"We infuse an optically active additive to our coating formulations that makes the coating reactive to specialized UV light," explains Randy Terrill, technical director of NCP Coating Laboratories. "You then coat or impregnate this pigment onto whatever you want to monitor--structural-steel beams, storage-tank walls, automotive frames, or the smallest manufactured parts. At inspection time, structural or material changes or imperfections show clearly. …

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