| abstract |
METAL-BONDED DIAMOND GRINDING WHEELS ARE IMPROVED BY THE INCLUSION OF FROM ABOUT 15% TO ABOUT 60% BY VOLUME OF GRANULAR BORON NITRIDE, HAVING A PARTICLE SIZE RANGING FROM ABOUT 63 TO ABOUT 1000 MICRONS, IN THE ABRASIVE SECTION OF THE WHEEL. THE INCLUSION OF THE BORON NITRIDE REDUCES THE TEMPERATURE GENERATED WHEN THE WHEEL IS USED WITHOUT LIQUID COOLANT, AND IMPROVES THE GRINDING RATIO (WEIGHT OF MATERIAL REMOVED PER WEIGHT OF WHEEL WORN). THE INVENTION MAKES POSSIBLE THE GENERAL USE OF METAL-BONDED DIAMOND ABRASIVE WHEELS UNDER DRY GRINDING CONDITIONS, I.E., WITHOUT LIQUID COOLANT. |