Pengaruh Jenis Dan Tekanan Fluida Pendingin Pada Minimum Quantity Lubrications (MQL) Pada Proses High Speed Drilling Terhadap Kekasaran Permukaan Baja ST 60

Sari

Recently, the cooling media that used for machining process still have contain substances that harmful to the health of the operator and not safety for environment. Therefor we need altenatif cooling media which safe for the environment and efficient to use. Some of the solution that can be used is using based cooling natural oil. The research purposes is to know the effect of using coconut oil and dromus for machining process. Otimization Process of machining parameters did with determination in order to obtain the temperature of the drill, surface roughness and machining minimum power. The parameters used are spindle speed, feed rate, air pressure and cutting condition. Machining process is using drilling process with material ST60. The research metode is using taguchi metode. The result of the research obtained conclution that optimum machining condition will produce smoothest surface roughnessat 565 rpm spindle speed, feed rate 0,08 mm/minute, air pressure 35 Psi, and cutting conditional coconute oil metode minimum quantity lubrication. Optimum machining conditions to produce the most low temperature chisel at 360 rpm spindle speed, feed rate of 0.08 mm / min, air press 35 Psi, and cutting condition dromus. While the machining conditions requiring the smallest machining power at 360 rpm spindle speed, feed rate of 0.08 mm / min, the air pressure of 40 psi, and dromus cutting condition.Keywords: MQL, High Speed Drilling, Surface Roughness.