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Toolholder Internally Cooled by a Phase Change Fluid in Turning of SAE XEV-F
Ist Teil von
Applied Mechanics and Materials, 2015-10, Vol.798 (Mechanical and Aerospace Engineering VI), p.486-490
Ort / Verlag
Zurich: Trans Tech Publications Ltd
Erscheinungsjahr
2015
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
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.