Effect of Milling Parameters and Coolants on Surface Hardness of Tool Steel: SKD 11

Abstract

The purpose of this research was to study milling parameters and coolant, which were affecting to surface hardness of tool steel: SKD 11. The experiment was design by conduction of 3 factors and 3 levels. The parameters consisted of three levels of cutting speed and three levels of feed rate. Furthermore, the experiment was done by coolant types. Soluble oil vegetable oil and dry-cutting were used for coolant types in milling. The face milling process was chosen to experiment. Cutting tool was used for this study was inserted carbide with coated polycrystalline vapor deposited (PVD) tools. The finding of main factors and interaction between factors affected to surface hardness was analyzed. Effect of cutting speed and feed rate on surface hardness after milling was discussed. In order to finding suitable of coolant type, effect of coolants on hardness of machined surface was analyzed and compared.