Friction coefficient of nano-ceramic polished by oxide film on elidgrinding wheel
In ELID (Electrolytic In process Dressing) grinding, the oxide film on grinding wheel plays an important role inimproving the quality of grinding surface for its assisting polishing function. The tribological properties of the oxide filmand the grinding work piece reflect the polishing effect of oxide film. However, the oxide film is always changing anddynamically updated, therefore, its tribological properties are constantly changing, so it is difficult to obtain the accuratetribological properties when the ELID grinding is conducted. In this paper, the dynamic changes of the friction properties ofthe oxide film are characterized by the dynamic changes of the ELID grinding force. The tangential force and normal forceare used to represent the friction coefficient in order to obtain the accurate real-time friction coefficient of oxide film.Therefore, the friction coefficient of various grinding wheels with different bonding agents, various grinding parameters,various grinding materials (nano- Al2O3 ceramic, nano ZrO2 ceramic and ordinary ZrO2 ceramic), and ELID grinding andordinary grinding can be further studied. The results show that: the friction coefficient of the oxide film on the bronze-basedgrinding wheel is greater than that composed by iron; the friction coefficient of the oxide film decreases with the increase ingrinding depth and feeding speed; the friction coefficient of the oxide film and nano-materials is smaller than that of theoxide film and ordinary materials; the transformation from γ-Fe2O3 to α-Fe2O3 in oxide film and the elastic deformation ofthe oxide film caused by the high-temperature of grinding may make the friction coefficient of ELID grinding greater thanthat of ordinary grinding, so the oxide film contains better property of friction and polishing. Therefore, excellent surfacequality is easier to be obtained by it compared with the ordinary grinding technology.
ELID grinding technology oxide film coefficient of friction nano-ceramic polishing
Jicai Kuai Feihu Zhang
School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo, 454000, China College of Mechanical Engineering, Harbin Institute of Technology, Harbin, 150001, China
国内会议
无锡
英文
71-77
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）