Analysis of the OCHN3MFA steel in terms of cutting forces and cutting material flank wear mechanisms in hard turning processes

Analysis of the OCHN3MFA steel in terms of cutting forces and cutting material flank wear mechanisms in hard turning processes

This article deals with the effect of selected machining parameter values in hard turning of tested OCHN3MFA steel in terms of SEM microstructural analysis of workpiece material, cutting forces, long-term tests, and SEM observations of flank wear VB and crater wear KT of used changeable coated cemen...

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Bibliographic Details
Published in:Bulletin of the Polish Academy of Sciences. Technical sciences Vol. 69; no. 6; p. 139203
Main Authors: Majerík, Jozef, Neumann, Vlastimil, Pokorný, Zdenek, Barényi, Igor, Sedlák, Josef, Dobrocký, David, Procházka, Jiri, Sagan, Miroslav, Jaroš, Aleš, Krbaťa, Michal, Kusenda, Roman, Jambor, Jaroslav
Format: Journal Article
Language:English
Published: Warsaw Polish Academy of Sciences 2021
Subjects:
Carbide tools
Cemented carbides
Cementite
Chemical composition
crater wear
Cutting force
cutting forces
Cutting parameters
Cutting wear
Evaluation
Experiments
flank wear
Inserts
Machine tools
mechanical properties
Microstructural analysis
Microstructure
Piezoelectricity
Process parameters
Scanning electron microscopy
Surface analyzers
Surface properties
Tool holders
Tool wear
Turning (machining)
Wear mechanisms
Workpieces
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Summary:This article deals with the effect of selected machining parameter values in hard turning of tested OCHN3MFA steel in terms of SEM microstructural analysis of workpiece material, cutting forces, long-term tests, and SEM observations of flank wear VB and crater wear KT of used changeable coated cemented carbide cutting inserts in the processes of performed experiments. OCHN3MFA steel was selected as an experimental (workpiece) material. The selected experimental steel was analyzed prior to hard turning tests to check the initial microstructure of bulk material and subsurface microstructure after hard turning and chemical composition. Study of workpiece material’s microstructure and worn cemented carbide cutting inserts was performed with Tescan Vega TS 5135 scanning electron microscope (SEM) with the X-Ray microanalyzer Noran Six/300. The chemical composition of workpiece material was analyzed with Tasman Q4 surface analyzer. All hard turning experiments of the used specimens were performed under the selected machining parameters in the SU 50A machine tool with the 8th selected individual geometry of coated cementite carbide cutting inserts clamped in the appropriate DCLNR 2525M12-M type of cutting tool holder. During the hard turning technological process of the individual tested samples made of OCHN3MFA steel, cutting forces were measured with a Kistler 9257B piezoelectric dynamometer, with their subsequent evaluation using Dynoware software. After the long-term testing, other experiments and results were also realized, evaluating the influence of selected machining parameters with different cutting insert geometry on the achieved surface quality.
ISSN:2300-1917
0239-7528
2300-1917
DOI:10.24425/bpasts.2021.139203