Introduction To Surface Integrity

Author:  Bellows, Guy
Source:  GE: TM70-974
Doc ID:  1970007
Year of Publication:  1970
Abstract:  
Surface integrity is a relatively new term introduced by Dr. M. Field and Dr. J. Kahles of Metcut Research Associates at the 1964 Tripartite Technical Coordinating Symposium. The effect of grinding on residual stress in metals has more than a decade of history. The above symposium marked the beginning of an effort to understand and document all of the surface effects and the material properties for a larger variety of material removal processes--both traditional and nontraditional. The increasing use of EDM, ECM, LBM, and other nontraditional processes with their unusual operating parameters has also accelerated interest in surface integrity. Surface integrity is define by Dr. Kahles as, "The unimpaired or enhanced surface condition or properties of a material resulting from a controlled manufacturing process". In a broad sense, the concern is for surface quality. Surface integrity has two ingredients--those that relate to the surface topography and those that relate to the characteristics immediately below the surface, i.e., surface metallurgy.