Influences of PVD coatings on cermet tool life in continuous and interrupted turning

D’Errico, Giampaolo E.; Calzavarini, R.; Vicenzi, B.

doi:10.1016/s0924-0136(97)00463-9

Cited by 14 publications

(5 citation statements)

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“…Similar work and results were obtained for turning operations in reference [4]. D'Errico et al [13] studied the influence of tool coatings on tool life in both continuous and interrupted turning operations. This work showed that tool coatings increased tool life in continuous turning, while no valuable increase was obtained by using these coatings in interrupted turning conditions.…”

Section: Resultssupporting

confidence: 59%

Tool-Life Modelling of Carbide and Ceramic Cutting Tools Using Multi-Linear Regression Analysis

Amaitik

Taşgin

Kılıç

2006

Proceedings of the Institution of Mechanical Engineers, Part B:

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This paper presents a study for the development of tool-life models for machining operations by means of a statistical approach called multi-linear regression analysis. The study was applied to a milling process for machining SAE 121 cast iron in a factory without interrupting the mass production. Different cutting tool materials under dry conditions were used in the cutting tests. Several machining experiments were performed and mathematical models for tool life have been postulated by using least-square regression analysis. The analysis was based on a first-order model in which the tool life is expressed as a function of two independent variables; cutting speed and feed rate. Analysis of variance was applied to check the adequacy of the mathematical models and their respective parameters. In order to demonstrate the usefulness of the developed models, tool-life contours have been generated and presented in different plots.

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Section: Resultssupporting

confidence: 59%

Tool-Life Modelling of Carbide and Ceramic Cutting Tools Using Multi-Linear Regression Analysis

Amaitik

Taşgin

Kılıç

2006

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…Cermets differ from sintered carbides, that in the occurrence of carbides WC, TiC, TiN they also contain nitrides TiN. The concentration of tungsten carbide WC is sometimes comparable with the content of titanium nitride TiN [1,2,17]. In comparison to tungsten carbide, cermets are characterized by a lower density, which is 6-7.5 g/cm 3 .…”

Section: Introductionmentioning

confidence: 99%

“…Cermets are formed from a combination of ceramic particles based on titanium carbide TiC, titanium nitride TiN and elements Ni, Co, Mo, forming a binding phase. Besides the fundamental carbides and nitrides also can be applied composite of carbides and nitrides: (Ti,Ta) N, (Ti,Mo) C, (Ti,W) C and (Ti, Ta, W) C [1,2,14,16]. Cermets differ from sintered carbides, that in the occurrence of carbides WC, TiC, TiN they also contain nitrides TiN.…”

Section: Introductionmentioning

confidence: 99%

“…The elements of nickel and cobalt used in the binding phase favor a suitable wetting of carbides, providing stable binding of the grains and and adequate ductility. However the concentration of cobalt cannot be too large, because favor increased abrasive wear [1,2,11]. The application of PVD for the acquisition of gradient coatings of high wear resistance, also in high temperatures, enables to improve the properties of these materials in machining conditions, among others by the reduction of friction factor, increase of microhardness, improvement of tribological contact conditions in the contact area tool-machined item it makes it also possible to protect these materials against adhesive or diffusive wear and against oxidation [3][4][5]7,[10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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Structure And Properties Of PVD Coatings Deposited On Cermets

Żukowska

Mikuła

Staszuk

et al. 2015

Archives of Metallurgy and Materials

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The main aim of the research is the investigation of the structure and properties of single-layer and gradient coatings of the type (Ti,Al)N and Ti(C,N) deposited by physical vapour deposition technology (PVD) on the cermets substrate.The structural investigations include the metallographic analysis on the transmission and scanning electron microscope. Examinations of the chemical compositions of the deposited coatings were carried out using the X-ray energy dispersive spectrograph EDS, and using the X-ray diffractometer. The investigations include also analysis of the mechanical and functional properties of the materials: substrate hardness tests and microhardness tests of the deposited coatings, surface roughness tests, evaluation of the adhesion of the deposited coatings as well as cutting properties.The results of the investigations carried out confirm the advantages of PVD coatings deposited onto cermets substrate especially in case of (Ti,Al)N. Coatings deposited onto the investigated substrates are characterised by good adhesion, high microhardness, taking effect in very high increasing of wear resistance.Deposition of hard, thin, gradient coatings on materials surface by PVD method features one of the most intensely developed directions of improvement of the working properties of materials. Equally important is the development of tool materials with respect to the fabrication of thin coatings resistant to wear in PVD process. It is of considerable importance, since through the selection of appropriate components, we can obtain a tool material of better properties. This area of tool material development is a priority nowadays, since it is the main route leading to the acquisition of machining tools of suitable properties.The results of the investigation provide useful information on microstructure, adhesion characterized in a scratch test, wear resistant properties of the gradient and single-layer coatings deposited onto cermet.Keywords: Tool materials, Gradient coating, Cermets, PVD Celem artykułu było zbadanie struktury i właściwości jednowarstwowych i gradientowych powłok typu (Ti,Al)N oraz Ti(C,N) naniesionych metodą fizycznego osadzania z fazy gazowej (PVD) na podłożu z cermetali narzędziowych.Badania strukturalne obejmują transmisyjną i skaningową mikroskopię elektronową. Analizę składu chemicznego i fazowego badanych powłok wykonano metodą spektroskopii energii rozproszonego promieniowania rentgenowskiego (EDS) oraz metodą dyfrakcji rentgenowskiej za pomocą dyfraktometru rentgenowskiego. Badania obejmują również analizę właściwości mechanicznych i funkcjonalnych badanych materiałów: badanie twardości podłoża z cermetalu i testy mikrotwardości naniesionych powłok, badania chropowatości powierzchni, ocena przyczepności naniesionych powłok, jak również właściwości skrawne.Wyniki przeprowadzonych badań potwierdzają zalety powłok PVD osadzanych na podłożu z cermetalu, zwłaszcza w przypadku powłok typu (Ti,Al)N. Powłoki osadzone na badanych podłożach charakteryzują się dobrą przyczepnością, wykazują wyso...

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“…It was confirmed that CVD-diamond-coated dies could perform for 100,000 deep-drawing operations on a stainless-steel sheet (SUS304) without the use of lubricants. On the other hand, a thin hard film coating such as a DLC coated can also be used to improve the lifetime and dimensional accuracy of tools (D'Errico et al, 1998). For instance, thin PVD layers can be coated on a mold to increase the lifetime of tools (Reisal et al, 2003;Tillmann et al, 2009).…”

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confidence: 99%

DLC Coating on Magnesium Alloy Sheet by Low-Temperature Plasma for Better Formability

Iriyama¹,

Yoshihara²

2011

Magnesium Alloys - Corrosion and Surface Treatments

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Influences of PVD coatings on cermet tool life in continuous and interrupted turning

Cited by 14 publications

References 5 publications

Tool-Life Modelling of Carbide and Ceramic Cutting Tools Using Multi-Linear Regression Analysis

Tool-Life Modelling of Carbide and Ceramic Cutting Tools Using Multi-Linear Regression Analysis

Structure And Properties Of PVD Coatings Deposited On Cermets

DLC Coating on Magnesium Alloy Sheet by Low-Temperature Plasma for Better Formability

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