Abstract
Grinding belts of the quality available today retain only a nominal similarity with former sandpapers. In particular, the performance capability of coated abrasives has increased many times, opening up completely new areas of application for belt grinding technology. A highly promising field is that of high-performance belt grinding, which now constitutes an economic alternative for the roughing of metallic materials. Material removal rates of more than 100 mm 3 /mm s and workpiece volumes removable per mm of belt width significantly in excess of 20 000 mm 3 /mm have been achieved in processing various steels. The rapid material removal also results in relatively “cool” grinding, generally obviating the need for cooling lubricants to prevent thermal workpiece damage. Investigations have shown that the grinding heat generated in dry grinding, with its negative effects on tool and workpiece, can be decisively reduced by an appropriate choice of machine parameters. In the classical area of application for belt grinding, finishing, improvements in the tool sector have resulted in considerably increased service lives. Mention should also be made of new belt splices and backing materials in course of development, which will permit harder contact wheels to be used for finishing, thus eliminating both chattering and the rounding of workpiece edges.
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