THE INFLUENCE OF SOLID LUBRICANT IN MACHINING PARAMETER OF MILLING OPERATION

Milling is a widely material removal process for different materials. It is characterized by high material removal rate. Machining leads to high friction between tool and workpiece, and can result in high temperatures, impairing the dimensional accuracy and the surface quality of the products. Application of conventional cutting fluid may not effectively control the heat generation in milling. Besides, cutting fluids are major source of pollution. Solid lubricant assisted machining is an environmental clean technology for desirable control of cutting temperature. Hence, this project investigates the role of solid lubricant assisted machining with graphite powder extra pure on surface quality and tool wear while machining mild steel. There are four conditions of lubricants will be analyzed for this experiment. The conditions are fully ordinary coolant, and the mixture between ordinary coolant with 50 grams, 100 grams and 150 grams of graphite powder extra pure. The performance of solid lubricant assisted machining will be analyzed in measuring the reduction in tool wear and surface roughness and compare with wet machining.