Abstract
The hardness of the abrasive tool material can be increased as follows: use of fine-grained fillers in abrasive masses in addition to the main fractions. Additional grinding of this bond slightly decreases its grain size, approximately down to 32 - 36 µm, and, above all, ensures higher uniformity. The additional introduction of the borosilicate glass based on fused alumina to the extent up to 15 % of the bond weight is of use. An optimum solution is the simultaneous application of the described ways to increase the hardness.
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