High-efficiency grinding of cold-work die steel with ultrafine-crystalline cBN abrasive grains
by Yoshio Ichida, Nabil Ben Fredj
International Journal of Machining and Machinability of Materials (IJMMM), Vol. 9, No. 3/4, 2011

Abstract: This paper presents the grinding characteristics of newly developed ultrafine-crystalline cBN (UcBN) abrasive grains in high-efficiency grinding of cold-work die steel. This new UcBN grain possesses an ultrafine crystal structure composed of sub-micron sized primary crystal grains. The fracture strength of the UcBN grain is about 3.7 times higher than that of conventional monocrystalline cBN grain. The grinding ratio in grinding with the UcBN grain is eight to 11 times higher than those in grinding with conventional typical monocrystalline and polycrystalline cBN grains.

Online publication date: Wed, 13-Apr-2011

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