Inspection of Casting

The following are the important non-destructive techniques which can be used for testing the various casting defects:

1. Visual Inspection Visual inspection can be used for detecting common defects, such as rough surfaces, shifts, omission of cores.
2. Ultrasonic Testing Ultrasonic testing (UST) is used to detect discontinuities in the casting.
3. Magnetic Particle Inspection Magnetic particle inspection can be conducted to detect very small voids just below the surface of the casting of a ferromagnetic material.
4. Radiographic Inspection Radiographic inspection is performed by using X-rays.
5. Dye-Penetrant Testing Dye-penetrant testing (DPT) is used to detect invisible surface defects in non-magnetic casting.