Method for Increasing Endurance Limit of Steel Articles

Author:  John F. Romans
Source:  US Patent 3,205,556
Doc ID:  1965014
Year of Publication:  1965
Abstract:  
This invention relates, as indicated, to a method for improving certain characteristics of steel articles, and more particularly to a method for increasing the strength and hardness characteristics of steel surfaces, particularly in spring steel surfaces, with a resultant increase in the endurance limit of the article.