PT-Liquid Penetrant Inspection

CSI offers fast, reliable and cost effective flaw detection through the use of a semi-automated liquid penetrant inspection line.  Our six station liquid penetrant line allows for a large volume of parts to be processed quickly and accurately.  This system is very flexible and can be used with a variety of techniques.

Lab Station shown, but PT can be performed in any location

History of PT

  • Oil and Whiting – Railroad Industry, Late 1800s
  • Color Dyes added – Late 1930s
  • Fluorescent Dyes added – Early 1940s
  • Water Washable Improved – 1960s

Advantages of PT

  • Inexpensive
  • Sensitive
  • Versatile
  • Portable
  • Easy to Learn

Limitations of PT

  • Time Consuming
  • Only Discontinuities Open to the Surface
  • Temperature (50 deg F – 115 deg F)
  • Difficult to use on rough surfaces
  • Ventilation
  • Messy