The influence of cooling techniques on cutting forces and surface roughness during cryogenic machining of titanium alloys

Abstract

A B S T R A C TTitanium alloys are one of the materials extensively used in the aerospace industry due to its excellent properties of high specific strength and corrosion resistance. On the other hand, they also present problems wherein titanium alloys are extremely difficult materials to machine. In addition, the cost associated with titanium machining is also high due to lower cutting velocities and shorter tool life. The main objective of this work is a comparison of different cooling techniques during cryogenic machining of titanium alloys. The analysis revealed that applied cooling technique has a significant influence on cutting force and surface roughness (Ra parameter) values. Furthermore, in all cases observed a positive influence of cryogenic machining on selected aspects after turning and milling of titanium alloys. This work can be also the starting point to the further research, related to the analysis of cutting forces and surface roughness during cryogenic machining of titanium alloys.

Cryogenic minimum quantity lubrication machining: from mechanism to application

“…LN 2 cooling in the turning is taken as an example. Spraying on the rake face can prevent thermal softening and reduce adhesion between tool and chip, which is conducive to reducing friction force [136]. However, the cryogenic effect of LN 2 over hardens the workpiece and increases the difficulty in overcoming material deformation, resulting in an increased cutting force [137].…”

Zastosowanie Co2 Jako Chłodziwa W Procesie Toczenia

“…Skutkuje to zabrakowaniem przedmiotu. Kolejną konsekwencją generowania ciepła w procesie skrawania jest nagrzewanie ostrza narzędzia [2,5,6]. Wzrost temperatury ostrza przyczynia się przede wszystkim do zwiększenia intensywności jego zużycia [4].…”