Temperature Measurement of Workpiece in Surface Grinding by PVD Film Method

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Abstract
The near-surface temperature in the workpiece in surface grinding is measured by applying the PVD film method developed recently for measurement of cutting tool temperature. The boundary, identified clearly, between the melted film zone and unmelted film zone is regarded as the isotherm of the melting point of the film material deposited on the inner surface of the workpiece. The temperature for two kinds of workpieces, plain carbon steel and 18-8 stainless steel, was measured under conventional surface grinding conditions. It was found that the technique is useful in estimating the temperature in the workpiece.