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Correlation between Coating Properties and Thermal Load of CrAlN-Coated Cutting Tools During Machining of AISI4140

Correlation between Coating Properties and Thermal Load of CrAlN-Coated Cutting Tools During Machining of AISI4140

Categories Zeitschriften/Aufsätze (reviewed)
Year 2020
Authors Breidenstein, B., Denkena, B., Heckemeyer, A., Beblein, S.:
Published In Defect and Diffusion Forum, Vol. 404 (2020), S. 53-60.
Description

In this study a novel inverse hybrid experimental-simulative approach to the determination of the thermal tool load as a function of the coating properties during orthogonal turning of AISI4140 with Cr1-xAlxN-coated cemented carbide tools is presented. The approach consists of an experimental determination of the internal tool temperatures by means of fiber-optic pyrometry as input for an inverse FEM-based simulation algorithm to calculate the surface temperatures. Based on a parameter study, the coating thickness s and the thermal conductivity of the coating λc were identified as the main factors influencing the thermal tool load. The combined influence of these properties was described via the thermal resistance R. It could be shown that the average thermal load on the tool surface increases with increasing thermal resistance R.

ISSN 1662-9507
DOI 10.4028/www.scientific.net/DDF.404.53