| abstract |
ORGANIC BONDED DIAMOND OR CUBIC BORON NITRIDE ABRASIVE TOOLS, SHOWING PARTICULAR UTILITY IN THE DRY GRINDING OF METAL-CARBIDES, AND TOOL STEELS, RESPECTIVELY, ARE PRODUCED BY INCORPORATING GRAPHITE, OF FINE PARTICLE SIZE, AND A REINFORCING FILLER IN THE BOND, AND BY EMPOYING METALCLAD ABRASIVE GRITS IN THE AMOUNT OF 7 TO 40%, BY VOLUME, OF THE ABRADING PORTION OF THE TOOL. THE GRAPHITE IS PREFERABLY OF A FLAKEY SHAPE HAVING AN AVERAGE DIAMETER O LESS THAN 300 MICRONS, AND IS PRESENT IN THE BOND IN THE AMOUNT OF FROM 5 TO 40 VOLUME PERCENT. WITH THE TOTAL FILLER CONTENT BEING FROM 15 TO 70%; THE REMAINING FILLER BEING, PREFERABLY, SILICON CARBIDE. |