Measurement of Liquid Film Thickness Accumulated on Surface Machined by Minimum Quantity Lubrication (MQL)

Nur Izzati Khoirunnisa Ismail; Nurrina Rosli; Ahmad Razlan Yusoff; Kenji Amagai

Authors

Nur Izzati Khoirunnisa Ismail Faculty of Manufacturing Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang
Nurrina Rosli Faculty of Manufacturing Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang
Ahmad Razlan Yusoff Faculty of Manufacturing Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang
Kenji Amagai Department of Mechanical Science and Technology, Gunma University, 376-8515,Kiryu, Gunma, Japan

Keywords:

Liquid Film, Minimum quantity lubrication, MQL

Abstract

This paper investigated the liquid film thickness of cutting oil accumulated on test surface machined by minimum quantity lubrication (MQL) milling process. The objective of investigation is to give the overview of cutting oil behavior on the machined surface. The measurement was carried out by using laser-induced fluorescence (LIF)method. The experiments were carried out by varying the cutting speed to investigate its effects on the cutting oil film thickness. This investigation found that the cutting oil film thickness remains stable at certain area for cutting speed below than 40 m/min. However, the decreasing thickness started to occur around one-third point of the milled route. Atcutting speed 40 m/min, the cutting oil film thickness presents unstable fluctuations along the entire milled route. However, the thickness almost stays the same along the entire milled route.The average liquid film thickness is not significantly affected with increasing cutting speed. The maximum average thickness is approximately 2.6 mm.