STUDY OF MACHINING OF THERMAL RECTIFICATED Corymbia citriodora AND Pinus elliottii

ABSTRACT This study evaluated the influence of thermal rectification in machining Corymbia citriodora and Pinus elliottii. The heat treatment was carried out for 6 hours at temperatures of 100°C, 140°C, 160°C, 180°C and 200°C and evaluated the performance of machining in three different material cutting tools, polished and hard metal carbide with TiB2 coating. The cutting power and roughness Ra and Rt of the machined surfaces with three different tools were evaluated. The power has proven lower for Pinus elliottii species. The roughness was lower for Corymbia citriodora wood. The roughness Ra and Rt were lower for heat treatment temperature of 180°C.