Balanced Electromagnetic Peening

Author:  JS Shaw, Hampton Falls, NH; NA Johnson, Schenectad
Source:  US Patent 5,813,265
Doc ID:  1998024
Year of Publication:  1998
Abstract:  
An electromagnetic peening apparatus includes a first electromagnetic coil having a first face configured to conform to a first surface of a workpiece, and a second electromagnetic coil having a second face configured to conform to a second surface of the workpiece. A carriage positions the first and second coils in abutting contact with the workpiece at respective first and second faces and surfaces. A power supply powers the coils to produce electromagnetic force therein to plastically deform the workpiece at the first and second surfaces to effect a compressive layer therein.