An Investigation of the Tool-Chip Interface Temperature and Heat Partition in High-speed Machining of AISI/SAE 4140 Steel with TiN-coated Tool

Cutting metals at high speeds is associated with high temperatures. Determination of the maximum temperature along the rake face of the cutting tool is therefore of particular importance because of its controlling influence on tool life. This paper reviews the models found in literature for the prediction of the percentage of heat from the secondary deformation zone that flows into the tool in dry high speed turning of AISI/SAE 4140 high strength alloy steel with TiN coated tool. The benchmark involves analytical and experimental based models used for estimating the heat partition coefficient in the tool and the average tool-chip interface temperature. This work is important for quantifying the thermal flux or in selecting and developing appropriate tool coatings.

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