Wear behavior of uncoated carbide inserts under dry, wet and cryogenic cooling conditions in turning C-60 steel

Finite Element Modeling of the Orthogonal Machining of Particle Reinforced Aluminum Based Metal Matrix Composites

“…The results obtained for cryogenic machining show increased tool life compared to the other methods, in agreement to studies in other materials by authors such as Zurecki [Zurecki 2003], Kumar et al or Dhar et al [Dhar 2006] among others. Reduction of flank wear is attributed in those works to retention of hardness and sharpness of the cutting edge in intensive cooling, protection from oxidation, corrosion, adhesion and absence of BUE formation.…”

“…The most notable nickel based alloy is Inconel 718, which is characterized by high strength, good oxidation, fatigue and creep resistance at high temperature [Dudzinski 2004]. These properties are of great interest in domains such as the ones cited before, but result in an added difficulty in machining.…”

“…Numerous experiments in different configurations have been done in cutting processes, such as pre-cooling the work material, as a material surface treatment or like a direct coolant jet in the cutting zone. This last method is the most common and successful, as shown by studies such as those by Hong and Broomer [Hong 2000] where a 67 % improvement in tool life is achieved in machining of AISI 304 austenitic stainless steel at high speed with LN, compared with conventional emulsion or experiments by Dhar et al [Dhar 2006] with LN jets cooling in C60 steel, in which a reduction in uncoated carbide inserts wear is obtained in comparison to dry and flood machining.…”

State-of-the-art cryogenic machining and processing

“…While cryogenic machining increased cutting forces, it reduced the chip thickness by 15% resulting in up to a 30% increase in the shear angle improving machinability. Dhar and Kamruzzaman (2007) and Dhar et al (2002aDhar et al ( , 2002bDhar et al ( , 2002cDhar et al ( , 2002dDhar et al ( , 2006b improved surface finish and lower geometrical deviation. Yet, the two latter improvements were mainly attributed to the reduction in tool wear rather than cryogenic temperature.…”

“…Figure 5, Surface integrity sub groups and parameters (Ulutan and Ozel 2011 Many researchers have reported that using cryogenic coolant in the cutting process has resulted in a reduction in the surface roughness and tensile residual stress of the machined surfaces. Bhattacharyya and Horrigan (1998) (Dhar et al 2006b, Dhar and Kamruzzaman 2007, Dhar et al 2002b, Dhar et al 2002c, Dhar et al 2006a).…”