Abstract
An experimental study was carried out to investigate the process in surface grinding of two kinds of typical granite with a brazed diamond wheel. The horizontal and vertical forces were measured to obtain the data for the tangential and vertical force components as well as specific energy. Micrograph observations on tool surface and granite surface were coupled to check the prevailing mechanisms for material removal. Although the red granite is more difficult to machine than the black granite, according to factory records, the normal and tangential force components and specific energy for red granite were lower than that for black one, which might be attributed to the high height protrusion of brazed tool and the more ductile flow occurred in the grinding arc of black granite compared to the red one.
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