Abstract
This paper describes the results of experiments on high speed milling of high hardness cast iron using CBN tools. First, the wear of CBN tools was compared with other tool materials in face milling of ductile cast iron and high chrome cast iron, and the ball end milling was applied to the high chrome cast iron. Next, the wear characteristics of CBN tools were investigated in end milling of the ductile cast iron that can be quenched, which is developed for the large stamping die.
