An Investigation of Hard Milling Performance Under MoS2 Nanofluid-Assisted MQL EnvironmentPages 333-339
Tran Minh Duc Abstract:
The presented work aims to investigate the hard milling performance of Hardox 500 steel (49-50 HRC) under MQL environment using MoS2 nano cutting oils. The impacts of input parameters including nanoparticle concentration, cutting speed, and feed rate on the total cutting force Fr and surface roughness Ra were studied and evaluated. The obtained experimental results indicate that the cutting efficiency and machinability of coated carbide inserts improved due to the better lubricating performance resulted from MoS2 nano cutting oil. Feed rate has the most significant influence on the total cutting force and surface roughness. Morever, in order to achieve smaller the total cutting force Fr and surface roughness Ra, the appropriate value ranges of V=125-140 m/min, feed rate f = 0.012-0.013 mm/min, nanoparticle concentration NC= 0.2-0.3% were provided to contribute the technical guides in production practice. Keywords: Hard milling,
Minimum quantity lubrication,
Nanofluid,
MoS2 nanoparticles,
Cutting force,
Surface roughness
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