Home Forums General Discussion Equipment, Machines, Accessories Almen strip for shot peening of holes

typically the aerospace industry peens holes using the same technique, quadrant peening.

by positioning the nozzle at 45 degrees and peening the hole from 4 quadrant positions (0, 90, 180, 270 degress) , both sides of hole.

if the hole is L/D less than 1, this enables line of site and eliminates the need to rotary lance peen the hole - and having to used masked strips.

To represent the hole, you can lay the almen strip flat over the hole , not along the hole axis, since you are peening at approx. 45 deg.