Study on the high-speed cutting for plastic mould steel using Ball End Mill of AlTiN coating layers
This paper investigated into process characteristics of AlTiN coated layers for machining to the direction of upper and lower in plastic mould material
(KP-4). It was used the cemented carbide ball endmill with the diameter of 8mm coated AlTiN layers (1 ~ 4) step by step using machining center. The material used in experiments is KP-4 that cut by three types of inclined angles; 15°, 30° and 45°. As estimated mechanical properties of AlTiN coated layers, it was shown the most result in the condition of three layered coating that the coating that the coating depth, the hardness of the coated layer. The surface roughness of the coated layer was 13 µm, Hv 3027.3 and 0.042 µm, respectively. The cutting component was better at the condition of upper direction than that of lower direction in all experimental conditions, and indicated to be less which the bigger angle of the material increase the effective diameter of the tool.