Abstract
An investigation is reported of the friction characteristics of the process in circular sawing of granites with diamond segmented sawblade. The sawing forces were measured and specific sawing energies were calculated in sawing five types of typical granite at specific removal rates ranging from 25 to 200 mm2/s. Coupled with SEM observations of the sawn granite surfaces, a quantitative analysis for sawing energy suggests that most of the sawing energy should be expended by friction of sliding between diamonds and granites. The effect of sliding friction was discussed by introducing a new quantity which is called mean chip longitudinal area.
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