I wasn't sure where to start this thread so I started it here.
I am having a problem with the company who passivates my stainless steel parts. The part is .265" long with a .75" diameter head that is .08" thick and a body diameter of .5". There is a .266" diameter hole through the part with a 100 degree countersink on the one side. Anyways the parts are then heat treated to 150 to 170 KSI. After that they go to get passivated to QQ-P-35 Type 2.
The problem is that the parts need to be blasted to remove any scale before passivation. There are usually 800 pieces at a time. They are half a$$ing the blasting so when they do whatever test it is that they do the parts are failing.
Here's my question; Is there something that I can do to them, possibly a vibratory tumble, to remove the scale before I send it over to get passivated?
Oh yeah the material is 15-5 PH.