There are many benefits to shot peening but I am wondering is there ever a time when shot peening would be harmful?
More specific to my application - I work in a plating shop. When in doubt, we peen. But now I am questioning is peening always the best solution.
There are two guidelines that I use when determining if peening is necessary. The first comes from AMS 2460. The chrome plating specification states "parts designed for unlimited fatigue life under dynamic loads are peened prior to plating." So if the part is dynamically loaded, we peen.
The second place I reference is AMS-S-13165 which states very thin sections should not be peened at high intensities. I use Table VI as a guideline and if the part is less than 0.090 inches (steel), I do not peen.
But sometimes we do not know if the part is dynamically loaded, and sometimes the thickness is right on the 0.090 inch. In these cases, is it ALWAYS better to peen if in doubt, or is there another factor I am not considering when trying to make this decision.
Thanks in advance.
