Tribology of Micro Milled Surfaces
Micro milling is an appropriate technology for the flexible production of precise micro molds with complex shapes for metal forming processes (e.g. micro deep drawing). Besides high form accuracy micro ball end milling also provides a specific surface topography which can enhance the tribological behavior during the forming processes. This paper is focusing on the tribological behavior of micro structured surfaces generated by micro milling compared to smooth surfaces. The coefficient of friction was investigated on a pin-on-disc test stand for different materials. The results of the tribological tests suggest a relationship between micro structure and coefficient of friction. Finally, the correlations between machining parameters and tribological behavior will be discussed.
Jianhong Zhao, Masanori Kunieda, Guilin Yang and Xue-Ming Yuan
S. Twardy et al., "Tribology of Micro Milled Surfaces", Key Engineering Materials, Vols. 447-448, pp. 681-684, 2010