Performance evaluation of cryogenically treated tungsten carbide tools in turning

Deep Cryogenic Treatment: A Bibliographic Review

“…It is interesting to observe that a recent work [24] states that cryo-treated tools can lose their wear resistance when they are subjected to prolonged periods of high temperature at the cutting edge. Hence, the authors have concluded that the state of the material after CT is metastable, but in the light of what is stated in [22] and reported above, this loss can be explained as an overtempering effect due to a prolonged high temperature working, with the consequent relief of beneficial compressive residual stress.…”

Effect of Cryogenic Treatment on Micro-structure and Property of 45# Steel

“…Whereas, The sample treated for 23h at -180℃ show an enhancement by 4% than un-treated sample. This can be correlated with the crystallite size of the sample, as the crystallite size decreases and the material micro-structure becomes homogeneous, hardness increases as mentioned by Callister [8] . In addition, saturability of carbon atom increases because of cryogenic treatment, there is more carbon atom on the surface of 45 Steel, as a result of the enhancement of hardness and wear performance.…”

A Review on Effect of Cryogenic Treatment on HSS and Carbide Tools

“…Cryogenic treatmentwas first seen as a process of increasing wear resistance andtool life of a tool. Yong et al 15 conducted the preliminary test to determine thecontrol of cryogenic treatment on end mills, zone punches,lathe tools, and concluded that an increase in tool life from50% to more than 200% were observed for the tools whichhad been soaked in liquid nitrogen for 12 hours. Rupinder and Kalmajit Singh.…”

“…The recorded increase in tool life was found to be around 55%. Yong et al [15] agreed that cryogenic treatment on tungsten carbide tool not only improves the flank wear resistance but also increases resistance to chipping of tools during turning process. Stewart et al [30] successfully recorded reduction in tool force on cryogenic treated C2 tungsten carbide inserts while turning when compared to non-treated carbide inserts therefore enhancing the life of inserts.…”