Dissertations and Theses @ UNI


Open Access Thesis


Metal-working lubricants -- Environmental aspects; Soy oil -- Industrial applications;


The manufacturing sector today's market felt the need to reduce costs along with the ability to be more "green."

Traditionally petroleum based fluids are used in the manufacturing industry. However they are environmentally more harmful as well as cause significant hazards to the operator. This thesis will provide a case study for this sector to become more environmentally friendly with the use of a soybean based cutting fluid. To prove the point a number of tests were performed turning 4140 steel on a CNC turning center. A number of tests were conducted to provide a comparative study of dry, petroleum based cutting fluid and soybean based cutting fluid at different concentrations.

It has been found that the soy based cutting fluid is just as good as the petroleum product when done at the same concentration which is recommended by the manufacturer. However increasing the concentration of the fluid compared to the suggestion of the manufacturer provided an improved machining performance based on the measured characteristics.

Year of Submission


Degree Name

Master of Science


Department of Industrial Technology

First Advisor

Nageswara Rao Posinasetti


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Date Original


Object Description

1 PDF file (53 pages)



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