THE INFLUENCE OF CUTTING SPEED VARIATION IN TURNING OF AISI 304 MATERIALS ON WEAR AND TOOL LIFE COATED CARBIDE CUTTING TOOLS

Tool life is machining data which is related to machining process. The aim of this research is to determine the tool life, tool wear and Taylor's tool life equation value of coated carbide insert when used in turning process of AISI 304 stainless steel. By completing this research, the tool life of coated carbide insert will be known and can be estimated when different cutting speed for given feeding speed and depth of cut are used. The experiment was done by using cutting speed which was varied whereas feed rate and depth of cut were fixed during the turning process until the tool wear value of each cutting speed reaches 0.3 mm (VB = 0.3 mm). Taylor's tool life equation was obtained as VCTL 0.939=2968 and value of tool life of 29 minutes 10 seconds for low cutting speed and 15 minutes 36 seconds for high cutting speed.