Hollisetal.(Hollis,1961) studiedtheeffectofcryogeniccooling on the wear process of carbide-tipped tools while machining titanium. Authors introduced liquid CO 2 to the base of carbide insert through a capillary tube carried in tool shank so as to provide a low ambient temperature and increased temperature gradient through the cross-section of the tip. It was found that the proximity of low temperature heat sink retarded crater wear as welding and plucking action was significantly reduced.