Investigation of the influence of different burnishing parameters on shape correctness and residual stresses

Abstract

Cold plastic procedures such as surface burnishing play an important role in life-enhancing machining methods. Application of this process the surface roughness improves, shape correctness also changes and the increases lifetime due to the compressive residual stress remains in subsurface are of the workpiece. This article deals with the change of these attributes and the correlation of these with the burnishing parameters: burnishing speed, feed rate, burnishing force and number of passes on diamond burnished low alloyed aluminium shafts. The experiments were executed by the Taguchi type full factorial experimental design method, the measurements of the cylindricity of the specimens were done with a circularity and position error machine while the measurement of residual stress was performed by X-ray diffraction method. The aim of this study is to define the appropriate range of technological parameters which result high improvements.