MACHINING OF NICKEL ALLOY BY CUTTING TOOL WITH PREPARED CUTTING EDGE PREPARATION

1 ZLÁMAL Tomáš
Co-authors:
1 MALOTOVÁ Šárka 1 SZOTKOWSKI Tomáš 1 VORTEL Ondřej 1 TREFIL Antonín
Institution:
1 VSB - Technical University of Ostrava, Ostrava, Czech Republic, EU, tomas.zlamal@vsb.cz, sarka.malotova@vsb.cz, tomas.szotkowski.st@vsb.cz, ondrej.vortel@vsb.cz, antonin.trefil@vsb.cz
Conference:
28th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 22nd - 24th 2019
Proceedings:
Proceedings 28th International Conference on Metallurgy and Materials
Pages:
1761-1767
ISBN:
978-80-87294-92-5
ISSN:
2694-9296
Published:
4th November 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
63 views / 24 downloads
Abstract

The article deals with machining and development of the wear of cutting tools for turning of nickel alloy Inconel 718 - 2.4648. This alloy is characterized by high strength and toughness, low thermal conductivity and high abrasion. As a result of these properties, the alloy has worsened machinability and it is necessary to put emphasis on technology, a choice of cutting tools, their geometry and cutting conditions. The exchangeable cutting inserts marked VBMT 160402F-1, made from sintered carbide and pre-verified cutting conditions were used for machining of the alloy. The microgeometry of cutting tools was defined with brushing technology and abrasive jet machining technology. The edge radius rn = 20±5 μm on cutting inserts was created by the brusher with abrasive corundum particles and the edge radius rn = 20±5 and 35±5 μm was created by abrasive jet machining technology. A gradual wear development and its intensity was checked during turning process of Inconel 718 with the use cutting tools with rectified cutting edge. Depending on intensity of a wear on major flank was determined a tool-life of cutting inserts and an influence of the microgeometry on machining process of alloy was considered.

Keywords: wear, nickel alloy, Inconel, cutting tools, microgeometry
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