HELP. I need to confirm that I'm doing a process correctly. I'm peening the inner bore of a cylindrical aluminum part with stainless steel cut wire media. I must hone the hole after peening so that I meet a particular diameter and surface finish requirement. I'm told that I can remove material up to 10% of the peening intensity. The intensity range is 6-10 (i.e. .006-.010 inch). I have measured the inside diameter (id)of the hole before peening. If I use the 10% removal rule am I allowed to remove 0.001inch (actually .002 inch for a diameter since the .001 inch would be a surface or radius referral) or must I tell the honing department what my peening intensity was so they can remove 10%? For example, suppose my intensity was 7A (.007 inch). Can the honing department remove only .0007 inch (or .0014 inch diameter) ? The id before peening is 4.2504 inch. After peening it is 4.2523 inch. The other issue with this part is which measurement should be used to determine the allowable material removal. The inside diameter is measured before peen. After peen, it is sent to be honed. The part is measured after hone to insure it meets the dimensional requirements. The question is, may we use the pre-peen measurement to determine the acceptable amount of base metal that may be removed or do we need a post-peen, pre-hone measurement of the diameter on which to base the determination. To summarize: "Can the allowed maximum metal removal be based upon the maximum of the peening intensity range or must it be 10% of the actual intensity?"
