This research aims to study the influence of cooling water quantity (MQL) the ability to study the effects of wear and of turning knife. By manufacturers to pare the work piece material experiment S50C speed cut to trial with 114, 167 m/min cutting depth equals 0.5., 1.5 mm. equivalent to 0.2, 0.4, enter rate mm/rev. comparison of cooling methods for machining method 3 is not used coolant additives. The chemical machining coolant and machining a cooling substance quantity (MQL)
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