Toolholder Internally Cooled by a Phase Change Fluid in Turning of SAE XEV-F

Abstract:

An internal cooling system inside a toolholder was developed aiming to eliminate the need of using cutting fluid without compromising machining efficiency. A phase change coolant (R141-b), with boiling point of 32oC around 101.3 kPa (atmosphere pressure), was used to improve heat dissipation in the cutting tool. Turning tests on SAE XEV-F were carried out using coated cemented carbide inserts. The results showed that the cutting tools lives were greater with internally cooled method than in dry cutting conditions. Nevertheless, the results were limited due to the low thermal conductivity of the steel (14.5 W.m/K) that is similar to Inconel^®, its abrasivity, and absence of lubricant effect of the internal cooling method. On the other hand, the cutting tool geometry was not modified as was done in others solutions found in literature and the cooling system operated in a closed loop. It has a great possibility of use by the industry because is an environmentally friendly technology.

• Periodical: Applied Mechanics and Materials (Volume 798)
• Pages: 486-490
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.798.486
• Online since: October 2015
• Authors: Rubens Roberto Ingraci Neto*, Renan Luis Fragelli, Arthur Alves Fiocchi, Vicente Luis Scalon, Luiz Eduardo de Angelo Sanchez
• Keywords: Cutting Fluid, Dry Cutting, Internal Cooling, Sustainable Machining, Tool Wear, Turning

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