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9th International Conference on Tribology in Manufacturing Processes and Joining by Plastic deformation, ICTMP 2021

作者： Methon, Grégory Courbon, Cédric M’saoubi, rachid Girinon, Mathieu rech, Joël University of Lyon ENISE LTDS CNRS UMR 5513 58 Rue Jean Parot Saint-Etienne42000 France R&D Material and Technology Development Seco Tools AB FagerstaSE-73782 Sweden CETIM 52 avenue Félix-Louat Senlis60300 France

ISBN: (纸本)9783035717242

The present work proposes to emphasize the effects of friction and wear formulations for wear prediction for turning operations. It is shown that friction models play a major role on local variables such as pressure, sliding speed and temperature (σn, Vsl, T) and thus on the simulated tool wear. This work highlights that both formulations and parameters of these equations should be carefully considered to achieve an actual predictive capability. © 2022 Trans Tech Publications Ltd, Switzerland.

关键词： Friction

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Optimal modelling of Colding parameters for round inserts with respect to tool use-time criteria 20

Optimal modelling of Colding parameters for round inserts wi...

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20th CIrP Conference on Modeling of Machining Operations in Mons, CIrP CMMO 2025

作者： Bello Bermejo, Juan Manuel Saatçi, Berk Johansson, daniel Hägglund, Sören Ståhl, Jan-Eric Windmark, Christina Division of Production and Materials Engineering Lund University LTH Ole Römers Väg 1 Lund221 00 Sweden R&D Seco Tools AB Björnbacksvägen 10 Fagersta737 47 Sweden Production Technology University West Gustava Melins Gata 2 Trollhättan461 86 Sweden

Optimization of machining processes, such as milling, is essential for industrial efficiency and product quality. To achieve greater efficiency, it is necessary to understand how tools wear down in different conditions in order to anticipate possible undesirable events like sudden breakage or unpredictable degradation. This study focuses on understanding tool wear in dry milling of compacted graphite iron (CGI) EN-GJV-450 using PVd-coated cemented carbide and cBN tools to predict tool life effectively. The research builds on the Colding model, an empirical framework for tool life estimation, by incorporating and comparing two chip thickness concepts in order to optimize the Colding model's performance, maximum chip thickness (hmax) and equivalent chip thickness (he). Through systematic experimentation and modelling, this work has identified optimal conditions for tool life prediction, with hmax offering a potentially resource-efficient cross-validation alternative aligned with sustainability goals. The results demonstrate that the optimized Colding model effectively predicts tool life for both coated cemented carbide and cBN cutting tools with round geometry in dry milling of CGI. The insights gained further enhance our understanding of the milling process and provide a solid foundation for selecting appropriate machining parameters to extend tool life and improve process efficiency. © 2025 The Author(s).

关键词： Milling (machining)

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Characterization of wear modes in orthogonal milling of 15-5PH stainless steel 24

Characterization of wear modes in orthogonal milling of 15-5...

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24th International ESAFOrM Conference on material Forming, ESAFOrM 2021

作者： david, Tom Methon, Grégory M'Saoubi, rachid Girinon, Mathieu rech, Joël Courbon, Cédric Univ Lyon ENISE ECL ENTPE CNRS LTDS UMR 5513 Saint-EtienneF-42023 France R&D Material and Technology Development Seco Tools AB FagerstaSE-73782 Sweden CETIM 52 avenue Félix-Louat Senlis60300 France

ISBN: (纸本)9782870193020

Tool wear remains of high interest for industry, as it influences process costs and part's surface integrity. Although experimental and analytical investigations have been the main ways to investigate wear, the growing development of computational power enables predicting tool wear based on chip formation simulations. If this has been quite successful in turning, developments in milling are still limited due to the specific nature of this machining operation characterized by an interrupted cutting process leading to mechanical and thermal cyclic loadings onto the cutting tool. Wear modes are often not well characterized and become even more difficult to model as far as hard to machine material such as martensitic stainless steels are concerned. The present work propose to investigate wear in orthogonal milling of a 15-5PH martensitic stainless steel. An experimental campaign is first performed to identify the wear modes when cutting this material with uncoated and coated carbide tools. Milling forces, tool wear and material transfer are especially studied. A multi-scale numerical procedure is then developed by combining an Arbitrary-Lagrangian-Eulerian (ALE) thermomechanical model to a pure thermal sub-model in order to predict the thermomechanical loadings withstood by the tool. The thermal sub-model is applied at the scale of the coating in order to extract the thermal gradients generated by the interrupted cutting. These loadings are finally compared to the reported wear modes to identify a correlation and improve their understanding. © ESAFOrM 2021 - 24th Inter. Conf. on Mat. Forming. All rights reserved.

关键词： Coatings

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Investigation on cutting fluid use in finish milling of polylactide (PLA) 3d-printed parts 20

Investigation on cutting fluid use in finish milling of poly...

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20th CIrP Conference on Modeling of Machining Operations in Mons, CIrP CMMO 2025

作者： Lorenzoni, Margaux Spitaels, Laurent rivière-Lorphèvre, Edouard Odent, Jérémy M'Saoubi, rachid Cloëz, Liam Fontaine, Michaël ducobu, François Machine Design and Production Engineering Lab Research Institute for Materials Science and Engineering University of Mons Place du Parc 20 Mons7000 Belgium University of Mons Place du Parc 20 Mons7000 Belgium R&D Material and Technology Development Seco Tools AB Björnbacksvägen 2 FagerstaSE-737 82 Sweden Department of Mechanical Engineering Sciences Division of Production and Materials Engineering Lund University Ole Römers väg 1 LundSE-221 00 Sweden FEMTO-ST Institute-Applied Mechanics Dept. Université de Franche-Comté-SUPMICROTECH-CNRS Rue de l'épitaphe 24 BesançonF-25000 France

Fused Filament Fabrication (FFF) is an additive manufacturing process based on material Extrusion (MEX) of polymeric filament. This manufacturing technology is commonly used for personalized production applications and prototyping, allowing to obtain customized parts with complex geometries at a low cost. However, this production technique has its limitations regarding dimensional accuracy and surface roughness of the final parts. To overcome these limitations, finish milling is considered to be a promising technique as it is widely used for metallic parts. Yet, the specific thermal properties of polymers such as low thermal conductivity and low melting temperature are adding a challenge in the determination of optimal cutting conditions. In this context, the use of cutting fluid could be the key to keep the material from melting during milling. Therefore, this paper proposes to compare the impact of using a compressed air flow to dry conditions on the cutting forces and the surface quality obtained on 3d-printed polylactide (PLA) parts. The qualification test of the tool-material couple standard (NF E 66-520-6) will be used as a guideline to determine the relevance of cutting fluid use for cutting conditions varying around an operating point. Moreover, simulated cutting forces using a mechanistic model will be compared to experimental data to evaluate the applicability of the model. © 2025 The Authors.

关键词： Compressed air

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Optimal modelling of Colding parameters for round inserts with respect to tool use-time criteria

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Procedia CIrP 2025年 133卷 286-291页

作者： Juan Manuel Bello Bermejo Berk Saatçi daniel Johansson Sören Hägglund Jan-Eric Ståhl Christina Windmark Division of Production and Materials Engineering Lund University LTH Ole Römers Väg 1 Lund 221 00 Sweden R&D Seco Tools AB Björnbacksvägen 10 737 47 Fagersta Sweden Production Technology University West Gustava Melins Gata 2 Trollhättan 461 86 Sweden

Optimization of machining processes, such as milling, is essential for industrial efficiency and product quality. To achieve greater efficiency, it is necessary to understand how tools wear down in different conditions in order to anticipate possible undesirable events like sudden breakage or unpredictable degradation. This study focuses on understanding tool wear in dry milling of compacted graphite iron (CGI) EN-GJV-450 using PVd-coated cemented carbide and cBN tools to predict tool life effectively. The research builds on the Colding model, an empirical framework for tool life estimation, by incorporating and comparing two chip thickness concepts in order to optimize the Colding model’s performance, maximum chip thickness (h max ) and equivalent chip thickness (h e ). Through systematic experimentation and modelling, this work has identified optimal conditions for tool life prediction, with h max offering a potentially resource-efficient cross-validation alternative aligned with sustainability goals. The results demonstrate that the optimized Colding model effectively predicts tool life for both coated cemented carbide and cBN cutting tools with round geometry in dry milling of CGI. The insights gained further enhance our understanding of the milling process and provide a solid foundation for selecting appropriate machining parameters to extend tool life and improve process efficiency.

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Influence Of Microstructural Assemblage Of Substrate On The Adhesion Strength Of Tisin Coated Pcbn Systems

Influence Of Microstructural Assemblage Of Substrate On The ...

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World PM 2022 Congress and Exhibition

作者： Gordon, Sandra Jiménez-Piqué, Emilio rodriguez-Suarez, Teresa M'Saoubi, rachid roa, Joan Josep Franca, Luis F.P. Llanes, Luis CIEFMA - Department of Materials Science and Engineering EEBE Universitat Politècnica de Catalunya Barcelona08019 Spain Barcelona Research Center in Multiscale Science and Engineering Universitat Politècnica de Catalunya BarcelonaTech Barcelona08019 Spain Ltd Global Innovation Centre Fermi Avenue OxfordshireOX11 0QR United Kingdom R&D Material and Technology Development Seco Tools AB Fagersta73782 Sweden

ISBN: (纸本)9781899072552

The coating adhesion strength of two TiSiN-coated polycrystalline cubic boron nitride (PcBN) grades is studied in this work. Microstructural assemblage of the PcBN substrate, described in terms of cBN content, binder chemical nature and average cBN grain size, is considered as the main experimental variable. In the present investigation a conical indentation test method is implemented to assess load levels at which cracking and delamination emerge, and their evolution with increasing load. Tests were conducted by using a conical diamond indenter of 200 µm in radius (rockwell C) and applying loads ranging from 98 to 980 N. They were complemented by an extensive and detailed SEM inspection of fracture micro-mechanisms (i.e. type of cracking pattern and delamination). results show that emergence and evolution of damage strongly depend on the substrate microstructural assemblage: the higher the cBN-content, the more resistant to both cracking and delamination is the coated system. © European Powder Metallurgy Association (EPMA)

关键词： Bond strength (materials)

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Influence of microstructural assemblage of the substrate on the adhesion strength of coated PcBN grades

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CErAMICS INTErNATIONAL 2022年第15期48卷 22313-22322页

作者： Gordon, S. roa, J. J. rodriguez-Suarez, T. M'Saoubi, r. Jimenez-Pique, E. Franca, L. F. P. Llanes, L. Univ Politecn Cataluna CIEFMA Dept Mat Sci & Engn EEBE BarcelonaTech Campus Diagonal Besos Barcelona 08019 Spain Univ Politecn Cataluna Barcelona Res Ctr Multiscale Sci & Engn BarcelonaTech Campus Diagonal Besos Barcelona 08019 Spain Element Six UK Ltd Global Innovat Ctr Fermi Ave Didcot OX11 0QR Oxon England Seco Tools AB R&D Material& Technol Dev S-73782 Fagersta Sweden UPC EEBE Campus Diagonal BesosEdifici 1 Ave Eduard Marista Barcelona 08019 Spain

Coated polycrystalline cubic boron nitride (PcBN) tools are increasingly used for industrial applications with stringent requirements. However, information on the mechanical integrity of these systems is quite limited. Within this context, the adhesion strength of two TiN/TiAlN-coated and microstructurally different PcBN substrates - high- and low-cBN content grades with metallic and ceramic binders, respectively - is investigated by means of rockwell C indentation testing. In doing so, special attention is paid to substrate microstructure effects on emergence and evolution of damage as applied load is increased. For both coated systems, it is found that damage scenario evolves from early adhesive delamination within the contact area towards radial cracking and spalling outside the residual imprint. However, critical loads for transition between damage stages are discerned to depend on microstructural assemblage of the substrate. Higher resistance to radial cracking and delamination is exhibited by the high cBN-content grade, in agreement with its higher hardness and toughness. Failure micromechanisms associated with cracking and spalling are similar for both coated-PcBN systems. Very interesting, delamination outside the residual imprint is determined to be of cohesive nature within the substrate, an experimental fact resulting from interaction among indentation-induced radial, cone-like and lateral fissures in PcBN.

关键词： Mechanical properties (C) Cutting tools (E) Coated PcBN Adhesion strength

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Adhesion strength of coated hard systems: a comparative study involving the use of different substrates-PcBN and WC-Co hardmetal

Adhesion strength of coated hard systems: a comparative stud...

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2021 European Powder Metallurgy Congress and Exhibition, Euro PM 2021

作者： Gordon, S. roa, J.J. rodriguez-Suarez, T. M’Saoubi, r. Jiménez-Piqué, E. Franca, L.F.P. Llanes, L. CIEFMA Department of Materials Science and Engineering EEBE Universitat Politècnica de Catalunya BarcelonaTech Campus Diagonal Besòs Barcelona08019 Spain Ltd Global Innovation Centre Fermi Avenue Harwell Oxford Didcot OxfordshireOX11 0QR United Kingdom R&D Material and Technology Development Seco Tools AB Fagersta73782 Sweden

ISBN: (纸本)9781899072545

Coated PcBN tools are increasingly used for industrial applications with stringent requirements. However, detailed information on the adhesion behaviour of these systems, taking into consideration coating, substrate and interface issues, is quite limited. Within this context, the adhesion strength of a coated polycrystalline cubic boron nitride (PcBN) grade is investigated in this work. For comparison purposes, the study is also conducted on another similar system, but using WC-Co hardmetal as substrate. The research is done by means of indentation tests, where emergence and extension of delamination are defined as critical parameters under consideration. Indentation tests were conducted using a conical diamond tip and applying loads ranging from 98 to 980 N. The mechanical study is done paying special attention to document load levels where delamination emerges and complemented by SEM images for inspection of fracture micromechanisms. Experimental results indicate that coated PcBN exhibits a higher critical load for initial delamination than coated hardmetal. However, further evolution of this phenomenon in the former is more abrupt than in the latter. These findings as well as involved micromechanisms are discussed on the basis of relatively different properties between the two substrates studied. © European Powder Metallurgy Association (EPMA)

关键词： Coatings

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Post-processing of additively manufactured metallic alloys-A review

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INTErNATIONAL JOUrNAL OF MACHINE tools & MANUFACTUrE 2022年 179卷

作者： Malakizadi, Amir Mallipeddi, dinesh dadbakhsh, Sasan M'Saoubi, rachid Krajnik, Peter Chalmers Univ Technol Dept Ind & Mat Sci Div Mat & Manufacture SE-41296 Gothenburg Sweden KTH Royal Inst Technol Dept Prod Engn Brinellvagen 68 S-10044 Stockholm Sweden Seco Tools AB R&D Material& Technol Dev S-73782 Fagersta Sweden

Additive manufacturing (AM) is characterised by several unique advantages, such as (freedom of) design, capability of fusing dissimilar materials, near-net-shape, and achieving a more sustainable production. While the increased precision of metal AM in recent years reduced the needed amount of post-processing to meet dimensional tolerance, the requirements for functional surfaces necessitate a well-understood post-processing, ranging from heat treatment to machining and finishing. The inherently rough initial (as-built) surface topography next to complex material microstructure affects the capability of post-processing/finishing operations to smooth the surface texture and obtain a favourable surface integrity. In this respect, a more fundamental understanding of the effects of material properties on post-processing/finishing is needed. Therefore, this review paper aims to establish the relationship between the characteristics of different AM technologies, microstructural properties of materials in as-built and heat-treated conditions, and the physical properties influencing the response of additively manufactured materials during post-processing/finishing operations. In particular, emphasis is placed on the physics-based understanding of how the microstructural characteristics of 316L, Ti6Al4V and Alloy 718 produced using the two principal technologies, Powder Bed Fusion (PBF) and direct Energy deposition (dEd), influence their mechanical properties like tensile strengths, hardness and ductility. These properties are among the key factors influencing the response of material during post-processing/finishing operations involving material removal by shear deformation. This review paper also discusses the role of postprocessing/finishing on fatigue performance, tribological behaviour and corrosion resistance of investigated AM materials. The paper summarises the state-of the art of post-processing/finishing operations and future research trends are highlighted.

关键词： Additivemanufacturing Powderbedfusion directenergydeposition Machining Grinding Mechanicalproperties Machinability Grindability Laserpolishing Finishing Electropolishing Fatigue Wear Corrosion 316L Ti6Al4V Alloy718

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Wear Mechanisms in Ti(C,N)-Al2o3 Coated Carbide during Sustainable Machining Cgi

SSRN

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SSrN 2023年

作者： Lindvall, rebecka diaz, Kevin Monroe Peng, ru Lin Gutnichenko, Oleksandr Sirén, Sebastian Åberg, Lena Magnusson Norgren, Susanne M’Saoubi, rachid Bushlya, Volodymyr Ståhl, Jan-Eric Division of Production and Materials Engineering Department of Mechanical Engineering Sciences LTH Lund University Ole Römers väg 1 Lund221 00 Sweden Division of Engineering Materials Department of Management and Engineering Linköping University Linköping581 83 Sweden Material Technology Processes and Specialists Volvo Group Trucks Operations BE63934 Skövde541 87 Sweden Sandvik Coromant R&D Lerkrogsvägen 13 Stockholm126 80 Sweden R&D Materials and Technology Development Seco Tools AB Björnbacksvägen 10 Fagersta737 82 Sweden

By replacing conventional gray cast iron (GI) with compacted graphite iron (CGI), automotive industry could keep up with stricter regulations on emissions and demands on higher engine performance. CGI has improved properties as to GI but is more difficult to machine. This study evaluates the machining performance at sustainable machining during finish face milling when using minimum quantity lubrication applied vegetable oil with and without graphite nano-additive, resulting in 8% or 17–23% improved tool life respectively as to dry conditions. The major part of the study investigates the wear mechanisms in commercial Ti(C,N)-Al2O3 CVd-coated cemented carbide. The coating degrades by mechanically induced cracking and fractures, oxidation of adhered CGI inside cracks, diffusional dissolution of Ti(C,N) layer, and reaction of Al2O3 layer with MgO inclusions forming a softer (Mg,Fe,Mn)Al2O4 spinel which is easier removed by the superficial plastic deformation due to chip flow. Other oxide inclusions, when deposited on cemented carbide surfaces, prevents adhesion of CGI material and thus reduces the wear rate. CGI adhering to cemented carbide induces diffusional loss of cobalt and carbon that eventually forms (Fex,Co1-x)3C iron carbide at the tool-workpiece interface which can reduce the diffusion rate. Novel findings also relates to the formation of 15 µm deep cracks in the cemented carbide due to inward diffusion of Fe accompanied by its oxidation that speeds up the oxygen ingress and further oxidation of W and Co. However, oxidation was found to provide a positive effect when the adhered CGI completely oxidized to form Fe2SiO4 oxide ceramic Tool Protection Layer which slowed down tool material degradation. © 2023, The Authors. All rights reserved.

关键词： Wear of materials

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