genericmech03
Mechanical
- Jan 16, 2003
- 11
Hello,
I was wondering if anyone had any experience in detecting porosity in aluminium die castings . We currently only detect the porosities after machining the surface away, but I would like to detect them before we waste money on the machining. I was thinking of maybe using NDI techniques like ultrasonic testing. Has anyone had any success with this or another technique?
The application is as follows, material thickness is roughly 10mm thick and the porosities we want to detect range roughly from 0.4mm to 2.0mm in diameter. The surface of the casting would have a degree of roughness (a maximum being Ra=8) and is also curved.
Regards