Using PCD for machining CGI with a CO2 coolant system |
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Authors: | Eberhard Abele Burkhard Schramm |
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Affiliation: | (1) Institute of Production Management, Technology and Machine Tools, Darmstadt Technical University, Darmstadt, Germany |
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Abstract: | Polycrystalline diamond is widely used as a economic cutting material for machining non-ferrous materials such as aluminum.
It is perceived that diamond cannot be used for cutting ferrous materials due to the high affinity of carbon to iron. Nevertheless,
under certain conditions it is possible to use diamond materials for cutting ferrous metals. In order to avoid graphitization
of the diamond matrix, it is necessary to keep the cutting temperature below the critical level of diamond graphitization.
This paper presents the influence of a cryogenic CO2 coolant strategy on the cutting process using PCD tools for cutting high strength compacted graphite iron (CGI). Investigations
show, that tool wear behavior strongly correlates with the cutting speed, the cutting forces, cutting temperatures, and surface
roughness of the workpiece. The test results show, that the tool life of PCD for cutting cast iron is dependent on the diamond
grain size, the binder material, and the cutting parameters. |
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Keywords: | Production process Compacted graphite iron Cryogenic coolant system |
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