ANALYSIS OF WEAR RESISTANCE OF TOOL STEEL AFTER DEEP CRYOGENIC TREATMENT

In the present research work T42 HSS material is used for evaluating effect of turning process parameters on tool wear. Further the same tool material is used for evaluating effect of cryogenic treatment along with turning process parameters on tool wear. The results led to a conclusion that there is an improvement in wear resistance of cryogenically treated tools as compared to the conventionally treated tools. Taguchi’s modified L8 array is used for carrying out experiments. The results obtained from non cryo tools and cryo treated experimentations are used to develop empirical mathematical models, comparison of wear etc. The experimental results obtained in case of non cryo and cryo treated tools experimentations are used to plot nomographs for prediction of wear. The mathematical model developed in this research work can be used to find out the improvement in wear resistance due to cryogenic treatment temperature, which ultimately is useful in determining the improvement in tool life due to cryogenic treatment.