Machining behavior of Al7075-B₄C-MoS₂ composites with different flushing medium

ABSTRACT

Using hydrocarbon oils as a flushing medium causes lots of issues to machinists such as cancer. In this study, the behavior of green flushing medium (SF biodiesel and deionized water) during µED milling of hybrid metal matrix composites (HMMC) under various parametric settings of reinforcement wt%, capacitance and feed rate is analyzed. Metal erosion rate (MER) decreases with rise in capacitance due to longer interval between sparks. Higher MER is attained with lower order wt % reinforcement whereas the surface roughness increases increment in wt % reinforcement. S_vk and S_k rise exponentially with increase in capacitance for considered green flushing medium. Kerosene offered higher MER compared to deionized water and Sunflower BD at considered machining condition. RLT appears to be more with DI water compared Sunflower BD due to deposition of debris on the surface. S_vk and S_k is found be minimum with SF biodiesel at considered parametric settings.

KEYWORDS:

• Sunflower biodiesel
• HMMC
• capacitance: voltage: DI water

Disclosure statement

No potential conflict of interest was reported by the author(s).