Patent ID: 8650920

Claim:
A method for surface peening of a component in a region of a passage opening, comprising the steps of: impinging a blasting material by a vibration device disposed on a first side relative to a component region of the component having the passage opening; and impinging the blasting material by a counter-element disposed on a second side relative to the component region of the component having the passage opening, wherein the first side is opposite the second side; wherein the counter-element is disposed at a distance relative to the second side of the component region and wherein the counter-element is a sonotrode; wherein the counter-element is used with a non-planar inner side of the counter-element facing the passage opening, wherein a marginal region is peened by the non-planar inner side between a surface of the component region and an inner surface of the passage opening; and wherein a deflection tool is disposed in the passage opening.