Effect of Cutting Fluid on Tool Wear in Finished Surface Formation Area of Rounded Nosed Tool When Turning Alloy 304
Takahide Hayashida, Ryutaro Tanaka, Katsuhiko Sekiya, and Keiji Yamada
Graduate School of Advanced Science and Engineering, Hiroshima University
1-4-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8527, Japan
In this study, the effect of cutting fluid on tool wear in finished surface formation area was investigated when turning alloy 304 with a TiN coated carbide tool under different lubricant conditions and the transition of surface roughness caused by tool wear was investigated. In the case of water-soluble cutting fluid, the higher concentration emulsion caused a smaller wear width VB and larger VB’”. In the case of oily cutting fluid, the lower co-efficient of friction oil caused a smaller wear width VB and larger VB’”. In both cases of water soluble and oily cutting fluid, the cutting fluid of lower coefficient of friction caused a larger wear width VB in milling at the feed rate of around tool edge roundness. This tendency was consistent with the wear width VB” and VB’” in turning. In both cases of water soluble and oily cutting fluid, the cutting fluid of lower coefficient of friction caused a larger cutting force volatility. The feed marks were more irregular in lower coefficient cutting fluids.
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