Ti(C,N)-Mo2C-Ni合金のダイヤモンド・ホィ-ルによる被研削性

概要

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The grindability of Ti(C, N)-Mo2C-Ni alloy was studied by using reginoid-bonded and nickel plated wheels with two kinds of diamond powders (single crystallike and polycrystallike) and single grit cutter. The TiC-Mo2C-Ni and WC-Co alloys were also tested for comparison. The binder content of those alloys was kept at 16.4 vol%. It was found that the grindability was excellent in the following order; WC-Co, TiC-Mo2C-Ni and Ti(C, N)-Mo2C-Ni alloys. It was also found that the wear of diamond in cases of nickel plated wheel and single grit cutter was most marked for Ti(C, N) base alloy; explaining the lowest grindability of the alloy. The wear of diamond particles seems to owe most to the mechanical one including microscopic fracture at the cutting edge and striation-formation on the flank surface of each particle.