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In this paper, roughness characteristics as Ra and Rz are observed and their changes regarding to different tool rotation speed without feed, using carbide tool in process of hard machining. By experiments it is shown that, with higher tool revolutions and cutting speed, turning with helical cutting edge yields higher surface quality. Furthermore, during experiments it was proved that it is possible to use carbide tools in hard machining. Results of this paper show that rotational turning has a high potential to become an efficient alternative to hard turning, especially when it comes to large scale production of simple shaped parts.
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Martikáň et al. (2015) studied this question.
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