Manufacturing Technology 2023, 23(1):60-72 | DOI: 10.21062/mft.2023.015
Surface Roughness, Topography, Accuracy, Chip Formation Analysis & Investigation of M390 and M398 Steels after Hard Machining
- Faculty of special technology, Alexander Dubcek University of Trencin. Ku kyselke 469, 911 06 Trencin. Slovakia
Article deals with processing of intermetallic materials produced by powder metallurgy M390 and M398 Microclean® produced by Böhler. Main interest is the analysis & measurement of their surface rough-ness and topography after the processing by DNMG and WNMG geometry of cutting inserts with 0.4 and 0.8 mm radius after hard turning at the same process parameters for both materials and all types of cutting inserts. The comparative studies were carried out for the microgeometrical and chip formation research on the machined surfaces and the technological processes were assessed, including chip dia-grams. Spectral analysis was used to verify the composition of investigated materials by spectral analysis measuring device. In order to examine the surfaces in detail, in addition to the standard roughness measurement, surface topography was performed by the coherent correlation interferometric micro-scope. The results of surface roughness as well as topography show higher wear resistance of M398 ma-terial compared to M390. This was confirmed indirectly by the fact that it is primarily shown by the higher surface roughness of M398 after machining under the same conditions. These properties are ob-tained by a higher content of additive elements, respectively of their carbides. Based on the conclusions of these experiments, additional knowledge and recommendations for the processing of these materials were created.
Keywords: Surface Roughness, Surface Topography, Cutting Parameters; Chip Formation, PM Steels
Grants and funding:
This article was created in the frame of the project: Advancement and support of R&D for “Centre for diagnostics and quality testing of materials „in the domains of the RIS3 SK specialization, ITMS2014+:313011W442, based on the Operational Programme Integrated Infrastructure and funded from the European Regional Development Fund
Received: January 16, 2023; Revised: March 20, 2023; Accepted: April 11, 2023; Prepublished online: April 24, 2023; Published: May 3, 2023 Show citation
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