Analysis of Influence Factors for Micro-pores Texture Produced by Grinding & Polishing

Surface texture technology is an effective method to improve the tribological properties. A new technology for surface texturing was developed by grinding and polishing method, which was characterized by carrying out molding process and polishing process simultaneously. Attached to the new technology, the influence of grinding time (0~ 120 min), grinding speed (1.45~10.47 m/s) and slurry concentration (1%~15%) on texturing parameters (micro-pores area density, micro-pores size distribution and surface roughness) was studied during the process. The results shows that the area density of micro-pores on the metal surface gradually declined to finally stabilized with the grinding time. When the grinding speed varied from 1.45 m/s to 10.47 m/s, the area density of micro-pores increased from 2.59% to 16.92%. Besides, the sizes of micro-pores as well as the surface roughness grew with the increasing grinding rate. Moreover, it is easy to obtain the micro-pores less than 10 μm as the grinding speed was lower than 2.09 m/s. Area density of micropores increased from 3.76% to 11.70% as the slurry concentration varied from 1% to 15%, and was approximately a linear increase relationship. In addition, it is easy to obtain the micro-pores size of 10 μm or larger on the metal surface if the slurry concentration was higher than 9%.