| The composite alumina ceramics are applied to many kinds of aspect in industrial sectors because of its superior performances of endurance of corrosion, abrasion and high strength. Due to the mine’s bad work conditions, the products of Ceramic roller have strength competitiveness. Ceramic roller have the ability of resistance abrase, acid and alkali and don’t have electrostatic seal well, lubricating oil isn’t come to light and the dust in the outside couldn’t intrusion the bearings easily. It doesn’t need any lubricating oil to maintenance and repaint, life are improve several times than steel roller that reduce the cost significantly. But the ceramics are hard to processing because of the vulnerability thus lead to the technology of ultrasonic assisted magnetic abrasive finishing(UMAF).This essay review the kinds of scholars’ research at magnetic abrasive particle(MAP), magnetic abrasive finishing device, finishing mechanism, for the downsides of the efficiency of magnetic abrasive finishing, focus on the ultrasonic assisted magnetic abrasive finishing mechanism and the processing parameters. Firstly, from the direction of magnetic material in the absence filed are magnetized, make the dynamic analysis of a single magnetic abrasive under the magnetic filed. Based on this analysis vibration force on magnetic abrasive’s strength and the function of the workpiece surface to get the knowledge of processing mechanism of UMAP under the ultrasonic helps. Secondly, for the first time considering the influence of ultrasonic cavitation to processing effect during the process of magnetic abrasive, from the viscosity of the liquid, environmental factors and ultrasonic parameters to analysis the related characteristics. According the ultrasonic cavitation’s conditions, select the fitable agent and abrasive ratio.,Make the connect cavitation with the nature of unbonded abrasives to realize the influence of the heat by the ultrasonic cavitation and the impact of the cavitation bubble’s collapseThe article makes focus on the UMAP Spindle speed, working gap, ultrasonic frequency and abrasive size’s parameters argnments to make a deliberation. By the method of control variables to make contrast experiments, the result shows that the spindle speed greater than abrasive, is easy to fly out of the processing area, if the speed is slowly, the processing effects are not obvious. When the working gap is too large to grinding pressure is too small, thus abrasive bush would destroy the workpiece surface. At the same time, abrasive size is also the main factors in machining experiment neither too big nor too small. |
