The geometric surface structure of hardened powder tool steels after finish turning using coated and uncoated PCBN cutting tools

• Autorzy: Jenek Mariusz , Frankovsky P.

Identyfikatory

DOI

10.5604/01.3001.0054.3225

• Języki publikacji: EN

Abstrakty

EN

The work aimed to determine the possibility of replacing the grinding operation of Vanadis 4 Extra Super Clean and Vanadis 23 Extra Super Clean powder steels with a turning operation using PCBN cutting tools available on the market. Design/methodology/approach The paper presents test results of the geometric surface structure of tempered steels such as powder steel (Vanadis 4 Extra SuperClean, Vanadis 23 SuperClean) and alloy steel (Sverker 21) after finish turning with coated and uncoated regular boron nitride (PCBN) cutting tools. Selected roughness parameters, 3D topographies, depth and degree of material strengthening, as well as residual stresses on machined surfaces, were studied and analysed. Findings An analysis of the machined surfaces of Van4 and Van23 powder steels indicates that the lowest values of both roughness parameters were obtained after machining with TiAlN-coated blades. The conducted analysis has revealed a strengthening of the surface layer of all machined surfaces, regardless of the type of machined material and the type of tool. The surface parameters of Van23 powder steel were similar to the ones obtained after the grinding operation, after machining with each type of tested blade. Van4 and Van23 powder steel surfaces examined had the highest compressive stresses among all turned surfaces. Research limitations/implications The research should be extended to include commercially available powder materials and coated tools. Practical implications It is possible to obtain a surface layer with properties corresponding to the grinding process in the turning process. Research has shown the possibility of replacing the grinding process with turning. Such a solution is only possible for the tested materials when using a PCBN blade with a TiAlN coating. It does not cause a reduction in the parameters of the surface layer. Originality/value The analysis carried out showed many advantages of using coated tools for turning a given group of materials, such as, i.e. lower values of the key roughness parameters of the machined surfaces or the absence of adverse phenomena on the machined surfaces (side flow, material sticking) which adversely affect the functional properties of the surfaces after machining.

Słowa kluczowe

EN

powder metallurgy; coatings; machining; PCBN; tempered steel

PL

metalurgia proszkowa; powłoki; obróbka skrawaniem; PCBN; stal hartowana

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2023
• Tom: Vol. 121, nr 2
• Strony: 221--230
• Opis fizyczny: Bibliogr. 27 poz., rys., tab.

Twórcy

autor

Jenek Mariusz

• Faculty of Mechanical Engineering, University of Zielona Gora, ul. Prof. Z. Szafrana 4, 65-516 Zielona Góra, Poland

• https://orcid.org/0000-0001-8310-3678

autor

Frankovsky P.

• Faculty of Mechanical Engineering, Technical University of Košice, Letná 9, 042 00 Košice, Slovakia

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