Method for Enhancing the Wear Performance and Life Characteristics of a Brake Drum

Author:  Thomas J. Meister
Source:  US Patent 5,193,375
Doc ID:  1991098
Year of Publication:  1991
Abstract:  
A method for enhancing the frictional wear properties, performance and life of a graphitic cast iron brake drum. The surfaces of the drum which are frictionally engaged by brake shoes, are cold worked by subjecting them to shot peening at an intensity level sufficient to induce surface and near surface residual stress, to thereby increase the resistance of said graphitic cast iron to scuffing and heat checking under conditions of dry sliding contact and frictional loading.