Abstract
Recently, there is a flow that applies the high hardness material to the metal mold, and the necessity of a new tool and the new processing method has risen. Then, it pays attention to the feature of the cBN tool that began to spread recently (low compatibility to hardness, wear and abrasion resistance, and an iron system material), and it aims at the thing applied to the metal mold processing that uses the system high hardness of iron material. The processing experiment of the cBN tool was done by various processing conditions, therefore an excellent cutting was shown by cutting about the die steel fee of HRC60 or more.
