Currently, Ni-Hard cast iron is expected to be applied to industrial machinery components as a low-cost wear-resistant material. This material is a type of white cast iron alloyed with nickel and chromium and has a high hardness (HRC 56–60). Although grinding is the common machining method, applying cutting processes is desirable from a cost perspective. Nevertheless, there are very few reports on the cutting characteristics of this material. Therefore, in this study, cutting conditions that minimize tool wear in the helical milling of Ni-Hard cast iron using a coated carbide tool were explored on a boring machine in an actual production line. Specifically, a one-factor experiment varying only the cutting speed and a design of experiments based on a conference matrix were conducted to identify the machining conditions that minimize flank wear width, and verification experiments were performed. As a result, practical cutting conditions were identified and are reported in this study.
YASUE et al. (Wed,) studied this question.