that both DTO products and the high rosin mixed acid offering all show good corrosion resistance at concentrations between 2.5% and 1.0%. Figure 9 show likewise similar performance of both TOFA products and the low rosin fatty acid.


Figure 7: Corrosion


resistance of high rosin mixed acids.


To reiterate, machining conditions, metal types, fluid selection, and other factors found in end-use operations can impact the performance of any fluid. Therefore, these tests serve as guidelines to help users select the desired functionality, making them valuable evaluation techniques. In truth, the final raw material selection is based on rigorous testing by the formulator. That does not mean that additive manufacturers cannot provide valuable feedback before the introduction of a raw material candidate to a final formulation by maintaining awareness of testing standards and the demands of the current market.


Figure 8: Corrosion


resistance of low rosin fatty acid


It is crucial to consider the significance of alternative fatty acids in metalworking fluid and lubricant formulations as a valuable addition to the current product offerings in the future. Since the need for lubricants and metalworking fluids is not likely to decrease, taking a proactive approach to diversifying raw material streams ensures that the industry can adapt to changing market conditions while still reducing environmental impact. Incorporating various feedstocks promotes innovation, enabling customised solutions to address potential new challenges in the metalworking and lubricant industry.


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LUBE MAGAZINE NO.176 AUGUST 2023


39


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