Fig.2.6 Effect Of Nozzle Tip Distance (NTD) On Diameter Of Hole The effect of SOD or NTD on material removal rate (MRR) is shown in fig.2.7 as the NTD increases the diameter of hole increases which is general observation in abrasive jet machining. Fig.2.7 Effect Of Nozzle Tip Distance (NTD) On Material Removal Rate The effect of abrasive flow rate (AMF) on material removal rate (MRR) is shown in Fig.2.8 as the abrasive massflow rate increases the material removal rate (MRR) increase which is also general observation in abrasive jet machining. Fig.2.8 Effect Of Abrasive Mass Flow Rate And Mixing Ratio On Material Removal Rate (MRR) The effects of standoffdistance on MRR and penetration rates have been reported by Ingulli, Sarkar and Pandey, VermaandLal. These investigations indicate that after a threshold pressure, the MRR and penetration rates increase with nozzle pressure. For brittle materials, normal impingement results maximum MRR and for ductile materials, an impingement angle of 15-20 degrees results in maximum MRR. The effects of abrasive grit size and mixing ratio which is the ratio of the weight of the abrasive powder to the weight of the abrasive powder and the air have been thoroughly investigated by many investigators. As the abrasive grit size and mixing ratio increase, the MRR and penetration rate increase but the surfaces finish value which is measured in Ra decreases. Fig.2.9 Graph Shows TheRelationship Between Pressure And Material Removal Rate (MRR) At Thickness 8 mm And NTD 12 mm
Fig.2.6 Effect Of Nozzle Tip Distance (NTD) On Diameter Of Hole The effect of SOD or NTD on material removal rate (MRR) is shown in fig.2.7 as the NTD increases the diameter of hole increases which is general observation in abrasive jet machining. Fig.2.7 Effect Of Nozzle Tip Distance (NTD) On Material Removal Rate The effect of abrasive flow rate (AMF) on material removal rate (MRR) is shown in Fig.2.8 as the abrasive massflow rate increases the material removal rate (MRR) increase which is also general observation in abrasive jet machining. Fig.2.8 Effect Of Abrasive Mass Flow Rate And Mixing Ratio On Material Removal Rate (MRR) The effects of standoffdistance on MRR and penetration rates have been reported by Ingulli, Sarkar and Pandey, VermaandLal. These investigations indicate that after a threshold pressure, the MRR and penetration rates increase with nozzle pressure. For brittle materials, normal impingement results maximum MRR and for ductile materials, an impingement angle of 15-20 degrees results in maximum MRR. The effects of abrasive grit size and mixing ratio which is the ratio of the weight of the abrasive powder to the weight of the abrasive powder and the air have been thoroughly investigated by many investigators. As the abrasive grit size and mixing ratio increase, the MRR and penetration rate increase but the surfaces finish value which is measured in Ra decreases. Fig.2.9 Graph Shows TheRelationship Between Pressure And Material Removal Rate (MRR) At Thickness 8 mm And NTD 12 mm
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