Examining the Effect of Various Vegetable Oil-Based Cutting Fluids on Surface Integrity in Drilling Steel – A Review

Advanced Materials Research Vol. 845 (2014) pp 809-813
Online available since 2013/Dec/04 at www.scientific.net
© (2014) Trans Tech Publications, Switzerland
doi:10.4028/www.scientific.net/AMR.845.809

Examining the Effect of Various Vegetable Oil-Based Cutting Fluids on
Surface Integrity in Drilling Steel – A Review


by:
A.Z. Sultan1,2a, S. Sharif2,b and D. Kurniawan2,c
1Department of Mechanical Engineering, Politeknik Negeri Ujung Pandang, Makassar, Indonesia
2Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, Skudai, Malaysia
subair@grad.its.ac.id, safian@fkm.utm.my, denni@ utm.my

Keywords: Green cutting fluids; Surface integrity; Drilling stainless steel


Abstract. Increased attention on environmental and health impacts by industrial activities forces the manufacturing industry to reduce the mineral oil-based metalworking fluids as a cutting fluid. The advantages of using vegetable oil-based cutting fluids on tool wear and the cutting force have been reported in the literature, but those reporting the effects of their use on the surface finish of the workpiece are still lacking. This mini-review gives an overview of the influence of vegetable oil based cutting fluids on surface integrity of steel during drilling process. Effect of the different cooling strategies on surface integrity is also presented.


Concluding Remarks
This mini review studies the influence of vegetable oil-based cutting fluids on surface finish of steel workpiece during drilling operation. It was found that cutting fluid, feed rate, and cutting speed have significant effect on surface roughness of the steel (AISI 304). In terms of surface roughness, MQL technique outperforms dry and conventional wet cutting. Surface roughness of austenitic stainless steel being processed by drilling using vegetable oil-based cutting fluids was very fine. At particular process parameters selected, the resulting Ra was entirely below the finish machining process threshold of 1.6 μm [24]. Literatures on effects of vegetable oil-based cutting fluids for other surface integrity, such as hole size enlargement, chip formation, cap formation, burr height, microhardness variation and residual stress are still lacking. Considering its advantages and also inconsistence due to viscosity effect on surface roughness, further research on drilling of steels is worth pursuing in search of better machining responses using alternative cutting fluids.

Acknowledgements
Financial support from the Ministry of Higher Education, Malaysia and Universiti Teknologi
Malaysia through Research University Grant (No. 05H27) are gratefully acknowledged. AZS
acknowledges scholarship from the Government of South Sulawesi Province, Indonesia.