Magnetic Particle Testing

The magnetic particle test method process is quick and simple in principle and application. It is highly sensitive to the detection of surface and slightly subsurface linear indication. The limitation of this method is the test material must be ferrous. Indications appear on the actual test part and our technicians then map out the size, location and asses the nature of indications. It is less expensive than other more sophisticated methods of quality assurance. It provides limited and variable potential for detection of subsurface indications.

Hi -Tech provides different types of magnetic particles inspection:

  • Dry method non-fluorescent-Dry method provides improved sensitivity for the detection of subsurface flaws.
  • Wet method non-fluorescent
  • Wet method fluorescent-Wet method provides improved sensitivity for the detection of very fine surface flaws.

    • Hi-Tech uses different methods for different applications:

  • Head shot
  • Central Conductor
  • Cable Wrap
  • Yoke AC/DC
  • AC De-Mag Coil

    •  

    Magnetic Particle Testing

    Some of the MPI indications pictures taken during our highly experienced trained and certified inspectors.

     

    Magnetic Particle Testing

    Our experienced inspectors detected forging lap in a forged Hub just before expensive and time-consuming process by our client to cut teeth/splines inside and outside the Hub and also avoided catastrophic incident.

    Magnetic-Particle-Testing2.1
    Magnetic Particle Testing6

    We found linear intermittent indications initiating from the toe of splines in of the roll sleeve

    Magnetic Particle Testing8
    Magnetic Particle Testing10
    Magnetic Particle Testing9
    Magnetic Particle Testing12
    Magnetic Particle Testing11
    Magnetic Particle Testing13
    Magnetic Particle Testing14
    Magnetic-Particle-Testing15.1

    Linear indication just in the center of the weld cap - detected with AC yoke and dry powder

    Magnetic-Particle-Testing16.1

    Linear indication on the junction of fillet weld and base metal (Non-fusion) - detected with AC yoke and dry powder

    Magnetic-Particle-Testing17.1

    Linear indication detected with AC yoke and dry powder inside the hole

    Magnetic Particle Testing3

    Another MPI indication initiated from the hole and propagated through the thread.

    Magnetic Particle Testing4

    The numerous indications shown on one of the tooth of hub

    Magnetic Particle Testing5

    Another very long linear indication detected by our dedicated and experienced inspector.

    You are in good hands....