冷轧轴承环件滚道表面质量研究

Research on the Surface Quality of Raceway of Cold Rolled Bearing Race

为研究冷轧工艺环节对轴承环件滚道表面质量的影响,在D56G90型数控精密冷轧环机上进行了6308深沟球轴承环件的冷轧试验,并在Philips Quanta 200型扫描电子显微镜下观察了冷轧轴承环件滚道处的表面形貌。试验表明,轧制进给速度对冷轧轴承环件变形区的接触边界摩擦润滑条件和滚道表面的形貌特征有重要影响;合理的轧制进给速度能减少轴承环件表面在轧制过程中形成的微观缺陷,从而保证轴承环件滚道的表面质量。

To investigate the influence of cold ring rolling process on the surface quality of the raceway of bearing race,the cold ring rolling test of 6308 inner-groove ball bearing race was carried out with a D56G90 CNC cold ring rolling mill.The surface topography of the cold rolled bearing race was investigated with a Philips Quanta 200 SEM.Results show that the rolling feed rate has a remarkable influence on the lubrication condition of roller-ring contact boundary and on the surface topography of the bearing race.A rational rolling feed rate will preclude the deterioration of micro defects on the surface of the bearing race,and therefore guarantees the surface quality of the raceway.