ISSN 0004-881X

DIAMOND GRAIN SIZE EFFECTS ON GRINDING-ABILITY OF DICHING BLADES FOR CUTTING AlTiC (Al2O3-TiC COMPOSITE)

by Takuya Adachi, Koji Matsumaru and Kozo Ishizaki
Nagaoka Gijutsu-Kagaku Daigaku (Nagaoka University of Technology)
Niigata 940-2188, Japan

Abstract

Three kinds of dicing blades were fabricated with different abrasive grain sizes, 5-12µm, (mesh number 1200, #1200), 10-20 µm (#800), and 30-40 µm (#500). Those dicing blades were evaluated by dicing AlTiC (Al2O3-TiC composite) under 2.0 N of constant feeding force. The dicing speed of dicing blades, #1200, #800 and #500 were 0.95, 4.8 and 6.3 mm/s at an initial line, respectively. Dicing speeds of dicing blades at an initial line were calculated by projection area which was obtained from vertical cross sectional area of a spherical single grain, number of abrasive grains, distributions of grains on the dicing blade surfaces and turning velocity of dicing blade. Calculated dicing speeds are 1.4, 4.1 and 6.5 mm/s for #1200, #800 and #500, respectively. It has been concluded that the dicing speeds depend on the size, the number and distribution of abrasive grains on the surface.

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