Study on the material removal control process of abrasive water jet

Abrasive water jet cutting technology (AWJCT) has found its wide applications in the machining of ceramics, quartz and compound materials. During the machining process, AWJCT shows superior performance on the cutting efficiency, the flexibility and no heat-affected zone. Yet one disadvantage of AWCT is that the control of the whole cutting process is not as easy as those in mechanize cutting or in plasma cutting. To solve the problem, analyses are performed in this paper to find out the proper method to manipulate AWJCT. Conclusions can be drawn from these analyses that the power spectrum density can be used as an indication to manipulate the pump pressure or the traverse speed so as to meet the requirement of cutting depth. The expert system based on these linear or nonlinear relationships can meet the need of automatic control of AWJCT.