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Abrasive Waterjet Cutting of Alumina Based Ceramics

1995; Linguagem: Inglês

L Chen, Ηλίας Σιώρης, Wck Wong,

Advanced Surface Polishing Techniques

Ceramic materials have found extensive applications on account of their various merits. However, as ceramic composite materials become harder, the limits of conventional mechanical cutting methods are being approached. Meanwhile, multi-directional cutting and cutting performances are also becoming more demanding. Abrasive Water Jet (AWJ) can provide more effective means for precision cutting performances and are also becoming more demanding. Abrasive Water Jet (AWJ) can provide more effective means for precision cutting of ceramic materials, but many aspects about this cutting technology are still under flux and development. In this study, experimental techniques based on statistical experimental design principles and theoretical investigations were conducted to study AWJ cutting of alumina based ceramics. Semiempirical cutting depth equations were determined for the prediction and optimization of AWJ cutting performance. Topographical characteristics of the uncut-through kerf and effects of various process parameters are discussed. In addition, visualization studies are conducted to develop further understanding of the macromechanics of AWJ cutting process. Preliminary experiments involving multi-directional cutting were performed to study the effects of jet impact angles and corresponding nozzle angles.