Selection between laser and AWJ cutting using empirical process modeling
Kramar, Davorin ; Junkar, Mihael
Laser and abrasive water-jet (AWJ) cutting are well introduced in different industrial applications, particularly in the processing of difficult-to-machine materials. This paper describes process and ...cost model aid for the selection between these two complementary contour cutting technologies in design of a single mechanical part. The machinability of certain material is established by the relationships between the behaviour of a workpiece material during and after processing and the preset process parameters. Complex interactions are interpreted in sense of empirical rules derived from experimental and specific material-process database curve fits. Modelling is a powerful tool for discriminating between processing options, for optimum co-selection of material and process at the level of precision needed to answer design requirements. Since many processing parameters are involved, selection of an optimum set of parameters offers opportunity for significant cost saving. Costs are related to operation parameters. The paper shows that seemingly complex optimisation problem can be simplified to a single parameter function through local optimisation. These results provide the technologist and the designer with feedback on the likely influence of processing on the viability and cost of design as well as indicating trial processing parameters.
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