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Determining tool chip temperatures from thermography measurements in metal cutting.pdf (723.3Kb)
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Title
Determining tool/chip temperatures from thermography measurements in metal cutting
Author
Saez de Buruaga, Mikel
Soler Mallol, Daniel
Aristimuño, Patxi Xabier
Esnaola, Jon Ander
ARRAZOLA, PEDRO JOSE
Research Group
Mecanizado de alto rendimiento
Version
Preprint under review
Rights
© 2018 Elsevier
Access
Open access
URI
https://hdl.handle.net/20.500.11984/5650
Publisher’s version
https://doi.org/10.1016/j.applthermaleng.2018.09.051
Published at
Applied Thermal Engineering  Vol. 145. Pp. 305-314. 25 December, 2018
xmlui.dri2xhtml.METS-1.0.item-publicationfirstpage
305
xmlui.dri2xhtml.METS-1.0.item-publicationlastpage
314
Publisher
Elsevier
Keywords
temperature measurement
Infrared thermography
Metal cutting
Orthogonal cutting
Abstract
Temperature measurement in metal cutting is of central importance as tool wear and surface integrity have been demonstrated to be temperature dependent. In this context, infrared thermography is prese ... [+]
Temperature measurement in metal cutting is of central importance as tool wear and surface integrity have been demonstrated to be temperature dependent. In this context, infrared thermography is presented as a reliable technique to determine tool temperatures and thermal fields at near real-time. However, a constraint of this technique is that temperatures are measured on the tool side faces normal to the cutting edge but offset from the tool/chip contact. In the present research, tool/chip contact temperatures were calculated from the tool side based on analytical theories of heating and the principles of heat generation in cutting processes. The required inputs were commonly measurable variables (cutting and feed forces, chip thickness and tool/chip contact length). The proposed approach was combined with a new calibration method in which a calibration curve that directly relates real and radiated temperatures is obtained, instead of measuring the emissivity of the radiating surface. As a case study, the research was conducted on a set of four ferrite-pearlite steels (16MnCr5, 27MnCr, C45 and C60). The results demonstrated the effectiveness of the method to establish the real influence of the cutting conditions (cutting speed and feed) and to distinguish the effect that different work material microstructures have in tool/chip temperature. Furthermore, the results showed a high degree of accuracy and less than 12% deviation from the trends when compared with 2D cutting simulations. [-]
xmlui.dri2xhtml.METS-1.0.item-projectID
info:eu-repo/grantAgreement/EC/RFCS/RFSR-CT-2014-00020/EU/Innovative Method dedicated to the development of a ferrite-pearlite grade regarding its Machinability/IMMAC
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