Abstract
Carbon Fibre Reinforced Plastic (CFRP) has been rising its popularity and demand in automotive and aeronautic industries due to its advantageous properties such as ultra-light, yet have high specific strength, high corrosion resistance and high rigidity. Nonetheless, CFRP is an expensive type of composite which required expensive treatment to manufacture it. Hence, to minimize any additional cost in CFRP’s manufacturing, the inconvenient factors such as severe tool wear during its machining, which shorten the tool life and high surface roughness should be minimized. Therefore, various methods have been implemented to overcome the problems. In this study, the effect of cutting temperature on the tool life of an 8 mm solid uncoated carbide cutting tool during milling of CFRP panel with an aid of chilled air is investigated. Chilled air, provided by vortex tube is used to adjust the cutting tool temperature before machining into range of −14 °C to 14 °C. Cutting speed of 3750–6750 rpm and feed rate between 52.19 and 371.81 mm/min have been carried out by using a Computer Numerical Control (CNC) vertical machining center. It has been identified that the tool wear decreases as both cutting speed and feed rate increase during milling CFRP.
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