On Performance of Brazed Single-Layer CBN Wheel

Summary In brazed single layer CBN wheel, high grit exposure but with strong grit-bond adhesion is known to be the most distinguished feature. The present investigation has, however, revealed that in spite of having a large grit protrusion, the consistency of performance of such a wheel may be affected by the manner how the density as well as the uniformity of grit distribution are regulated in the monolayer configuration. This is particularly true when a chip accommodation problem leading to wheel loading exists. Experiments with monolayer CBN wheel varying in grit density and under various grinding conditions have further revealed that pre-brazing placement and fixation of CBN grit on the tool substrate with an even distribution and adequate inter-grit spacing may remarkably enhance the flexibility of application of a high protrusion single-layer CBN wheel.