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Turning of plain carbon steels with TiC-coated and uncoated WC-Co tools in the built-up-edge (BUE) speed range

1975; Elsevier BV; Volume: 32; Issue: 2 Linguagem: Inglês

10.1016/0043-1648(75)90264-1

1873-2577

H. Jonsson,

Advanced machining processes and optimization

During the turning of plain carbon steels (0.15–0.70 wt.% C) built-up edges (BUE) may form on uncoated and TiC-coated WC-Co cemented carbide tools. A thin (0–10 μm) homogeneous nonetching zone may form between the BUE and the tool. Experimental studies indicate this zone to be mainly a Fe-C alloy with high hardness (~1100 HV 0.025). The TiC-coated tools were shown to be superior to the uncoated tools as they produced both a narrower BUE-speed range and a better surface roughness of the turned material. When cutting at very low speeds (<20 m/min) no advantages were observed emanating from the coatings.