Controlled Experiment on the Cutting Depth of 7050 Aluminium Alloy Machined by High-pressure Abrasive Water Jet and Process Study

Abstract

As the new type of cutting technology, high pressure abrasive water jet (AWJ) has been used in more fields at present. The article aims at ultralumin material of 7050 aluminium alloy, takes advantage of the existing experiment equipment and adopts the high pressure abrasive water jet technology to conduct cutting experiment. On the basis of experimental data, the cutting experiment model is established; the pressure of jet has influences on the cutting depth of 7050 aluminium alloy material; the target distance and feeding speed of nozzle movement under different cutting conditions are obtained by adopting the method of orthogonal experiment; the prediction model of cutting depth (H) is established by adopting Matlab language and multiple regression analysis method when 7050 aluminium alloy material is machined by high pressure abrasive water jet. Finally, the analytical result of the cutting depth range has shown that the pressure of water jet has the most obvious influence on the cutting depth of aluminium alloy material, while the influence by the feeding speed of water jet ranks the second.