Experimental Research of the Influence of Hot Machining Method on AISI 4340 Lathe Machine Process Towards Specific Cutting Energy and Surface Roughness

This research is about the experimental investigation of AISI 4340 turning process using carbide tools with hot machining and dry cutting methods. The workpiece is heated using torch flame gas. Experimental analysis is held at various machining conditions for hot machining and dry cutting methods by focusing on the measuring specific cutting energy. The calculation of specific cutting energy is carried out theoretically. The purpose of this research is to observe the effect of various machining process conditions of the workpiece on specific cutting energy of the workpiece. This research also analyzed the effect of specific cutting energy on the surface roughness of the workpiece based on machining parameters after machining. The results showed that the feeding rate was the most influencing factor in determining the value of surface roughness and specific cutting energy. Based on the comparison between hot machining and dry cutting, hot machining provides a lower value of specific cutting energy than dry cutting.