A study on the shape of the surface generated by abrasive jet machining

Progress in fluidized bed assisted abrasive jet machining (FB-AJM): Internal polishing of aluminium tubes

“…3). This is in marked contrast to the experimental findings reported in the literature for the other AJM systems [23][24][25][26], where slight deviations from ideal running of the systems resulted in relevant unevenness of the surface being machined. The difference between FB-AJM and the other systems is probably that the distribution of abrasives across the workpiece section in FB-AJM is uniform, which, as previously stated, avoids flux disturbance, peculiar pattern of abrasives on the workpiece, and jet fluid anomalies.…”

“…An optimized jet velocity value of 13 m s À1 was analytically found by Kim et al [24] in their attempt to model a magnetic AJM system, and Barletta et al found a similar value to be best in FB-AJM of stainless steel tubular parts [27]. Moreover, a selflimiting condition imposed by abrasive jet speed on accuracy of theoretical finishing achievable has already been stressed by one of the authors in a previous study of fluidized bed machining of complex-shaped aluminium components [32] as well as in further studies of AJM processes [23,[25][26].…”

“…These are caused by the hydrodynamic characteristics of the abrasive jet, making this process unsuitable for most tubular shaped parts. Precision machining can be virtually impossible using AJM [23][24], and operating problems can arise including the reach of chocking regimes, significant nozzle wear, fines dispersed in the atmosphere as well as continuous demand for abrasive replacement [25][26].…”

A correlation for predicting the kerf profile from abrasive water jet cutting

“…The waviness of the cut is apparent at high cutting speeds. This waviness is not addressed here, but has been the subject of a number of other studies [2,[5][6][7][8][9].…”

Investigation into micro abrasive intermittent jet machining

“…Wakuda et al [17,18] perform MAJM on different engineering ceramics using three different abrasives to identify the material response of alumina ceramics to the micro abrasive particle impact and to reveal the effect of workpiece properties on machinability of engineering ceramics during MAJM process. Balasubramaniam et al [19] discuss the effect of various input parameters on the shape of the abrasive jet machined surface. Although recent studies clarify that MAJM can be applied to pattern etching or micro machining of small holes and slots on hard-brittle materials, some problems still remain to be solved.…”