Hi Walter,
Thanks for your reply. The high intensity portions are at the top of the shroud and the bottom of the root. So basically it s just doing a lot of angling of the fixed blast guns. I have to admit , it is a pain and sometimes part of the high pressure blast stream does stray at a slight angle to hit the low portions. We still manage to get the low intensities though when this happens.
I do feel that maskings should be used, but it s not exactly part of their requirements, and I suppose it s a situation where "thats how this process have always been done" . The process is required to conform AMS2430. Unlike AMS2432 this spec doesn't say much about multiple intensity locations and what is acceptable. If I remember correctly AMS2432 requires the intensities to be within 0.0015 of each other within the specified range. So does the mean that under AMS2430:
It s acceptable to get 4N,5N,7N for 3 almen locations in the low range(requirement 4-7N)
?
Last edited by AdamC; 01/07/12 07:08 AM.
