A Drawing shot peen requirement calls for 150% coverage .012A-.015A arc height using 32 CW shot. I have never heard of peening an item in increments between 100 and 200%. Is
this a standard practice allowed by any specification and if so where can I locate it?
The company certifying a part shot peened to 150% uses an additional 50% time in the shot process to say this is 50% greater peening. I disagree but only from an intuitive stance.
If this is possible, please provide an explanation of the % of coverage/compressive stresses that can be expected to result from an additional 50% peening time, i.e., will it result in a full shot coverage over the entire part that meets the Almen strip height? Any explanation you can provide on this subject is appreciated.
Thanks for your help.
Jim A
