Abstract
A novel grinding technology that incorporates in-process dressing of metal-bonded superabrasive wheels, known as Electrolytic In-Process Dressing (ELID) has been used for surface grinding of ceramic matrix composites ( CMC) and structural ceramics. The grinding operation was performed with CBN and diamond wheels using various grit sizes and bonds. The ELID grinding was performed with metal-bonded wheels, and the conventional ( non-ELID) grinding was performed with resinoid-bonded wheels. Compared with conventional grinding, ELID grinding with a cast-iron-bonded diamond wheel produced an average peak-to-valley roughness about 100 nm smaller during finish grinding. The scanning electron microscopy ( SEM) also showed improvement of the ground surface with respect to the shape of the grinding marks. ELID grinding showed increased stability in grinding force for high stock removal ( rough grinding) and also produced a significantly lower dulled area at the edge compared with conventional grinding.
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