Examination of the Material Removal Mechanisms During the Abrasive Jet Finishing of 45 Steel

The abrasive jet finishing is a kind of compound machining process that combines grinding with loose particles finishing: a slurry of an abrasive and a liquid solvent is injected into the grinding zone between the grinding wheel and work surface, under grinding wheel stops cut-in feed conditions, after workpiece grinding has been done. The abrasive particles are driven and energized by the rotating grinding wheel, liquid hydrodynamic pressure, and increased slurry speed between the grinding wheel and work surface to achieve micro-removal finishing. In this paper, the material removal mechanisms of abrasive jet finishing with grinding wheel as restraint was investigated, based on the size ratio of characteristic particle size to film thickness between grinding wheel and workpiece. The single abrasive movement characteristic was studied under two-body lapping and three-body polishing mode. The critical condition for transformation from two-body lapping to three-body polishing was analyzed. Experiments were conducted for theoretical modes verification. It was found that the theoretical analysis is accordant with experimental results.