Impact Evaluation of Cryogenic Treatment to Wear Characteristics of ADI Cutting Tool

摘要

Nowadays, there are many industries develop the using of cryogenic treatment to improve wear resistance of cutting tool. Target of the research is to evaluate impact of cryogenic treatment method to wear resistance characteristic of ADI (Austemper Ductile Iron) cutting tools. ADI cutting tools of cryogenic treatment implemented for turning process of aluminium alloy material T-6061 with cutting depth (a) variation 0.1mm; 0.5mm; and 1mm, while cutting speed (Vc) 70 m/min and constant feeding motion (f) 0.1 mm/rotation without coolant. Analysis of this experiment uses analytic method and microscope digital observation. The finding of experiment are (1) BUE (Built Up Edge) deposit of Al material on untreated ADI cutting tool be thicker with increase of cutting depth (a). (2) BUE deposit of Al material be thinner on cryogenic treatment ADI cutting tool with increase of soaking time. (3) Wear on rake surface be worse with increase of cutting depth (a). (4) ADI cutting tool as a result of cryogenic treatment with soaking time for 48 hours, cutting speed (Vc) 70 m/min, feed motion (f) 0.1 mm/rotation and cutting depth (a) 1mm, show the wearing of cutting tool edge decrease until 77% compare than cutting tool without cryogenic treatment. (5) Wearing of cutting tool edge be smaller with increase of soaking time on cryogenic treatment process so wear resistance be higher.