Boundary Layer Improvement of Plate Springs or Undulating Springs

Author:  Bernfried Hesselmann; Sven Roth; Peter Buchner; Andreas Rinsdorf; Thomas Muhr
Source:  US Patent 9,003,850
Doc ID:  2015053
Year of Publication:  2015
Abstract:  
A process for producing plate springs or undulating springs wherein surface regions which are subjected to tensile stresses when the spring is under load are provided with an internal compressive stress in the boundary layer, wherein said surface regions are rollingly compressed by a ball or roller or subjected to tensile stress and compressed by shot peening.