Machining of high performance workpiece materials with CBN coated cutting tools

Uhlmann, E.; Fuentes, Javier; Keunecke, M.

doi:10.1016/j.tsf.2009.09.095

Cited by 43 publications

(23 citation statements)

References 3 publications

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“…In many applications, a low surface roughness parameter, Ra, is demanded [15][16][17]. In other cases, the surface is required to have a machined finish [18,19].…”

Section: Introductionmentioning

confidence: 99%

Effect of shielding gas on the properties and microstructure of melted steel surface using a TIG torch

Escalona

Mridha

Baker

2015

Advances in Materials and Processing Technologies

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This version is available at https://strathprints.strath.ac.uk/49507/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. Abstract. A surface engineering technique based on a Tungsten Inert Gas (TIG) torch was used to melt single tracks on the surface of a micro-alloyed steel with a hardness of 150 HV. The influence of three shielding gases, argon, helium and nitrogen, on the microstructure and hardness of the resolidified surfaces was analyzed. Effect of Shielding Gas on the Properties andIn all melting techniques, the heat generated by the source is normally conducted to the substrate ahead of the torch, and has been described as 'preheat'. This leads to a gradually higher substrate temperature, from the start to the finish of a melted surface track. The aim of this research was to analyze any inhomogeneities in the microstructure, due to 'preheat', which is rarely considered in the published literature. Three thermocouples were located along the melted track in order to record the temperature at three different points. An energy input of ~ 840J/mm was used in each experiment and the results show that the maximum temperature recorded by the last thermocouple, N o three (subjected to the preheat), for argon, helium and nitrogen gas was 590 ºC, 1120º C and 740 ºC respectively, where a difference of 150 ºC and 200 ºC was registered between the first and third thermocouples when using helium and nitrogen respectively. The corresponding hardness values were 170 HV, 162 HV and 225 HV, and the corresponding surface roughness values were 6 µm, 12 µm and 25µm. A decrease of almost 60% in the roughness value was observed between the initial and last stage of the melted track, when using argon as shielding gas.

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“…In many applications, a low surface roughness parameter, Ra, is demanded [15][16][17]. In other cases, the surface is required to have a machined finish [18,19].…”

Section: Introductionmentioning

confidence: 99%

Effect of shielding gas on the properties and microstructure of melted steel surface using a TIG torch

Escalona

Mridha

Baker

2015

Advances in Materials and Processing Technologies

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“…Boron based tribological hard coatings attract the attention of researchers to be used in tribological applications thanks to their lubrication and heat resistance properties [12,13]. Due to the limited information on boron nitride coated tools' performance in literature, it is necessary to reveal the applicability of boron nitride coating in milling operations of Inconel 718 superalloy.…”

Section: Introductionmentioning

confidence: 99%

Effect of Boron Nitride Coating on Wear Behavior of Carbide Cutting Tools in Milling of Inconel 718

Çalışkan

Kurşuncu

Güven

et al. 2016

Machining, Joining and Modifications of Advanced Materials

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Boron nitride based tribological coatings promise hope in tribological applications thanks to their excellent lubrication and heat resistance properties. However, the applicability of these coatings on cutting tools in machining applications is not well known and it needs to be revealed. Therefore, in this study, a boron nitride (BN) coating was deposited on carbide milling tools. Inconel 718 was used as workpiece material in face milling tests to determine the wear behavior of the BN coated carbide tools. Surface roughness and tool wear was recorded in relation with cutting length. Wear mechanisms on the coated carbide tools were determined using scanning electron microscopy in combination with energy dispersive spectroscopy. Abrasive and adhesive wear was found as main failure mechanisms on the worn tools. Approximately two times longer tool life was obtained with the BN coated carbide tools.

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“…have been developed for better wear resistance or dispersion hardening [9][10][11][12][13][14]. Cubic boron nitride (cBN) has outstanding physical and chemical properties similar to diamond such as high hardness, high thermal conductivity, large band gap, and high breakdown field [15][16][17]. So cubic boron nitride (cBN) particles are chosen as the second phase to enhance the wear resistance property of the coating.…”

Section: Introductionmentioning

confidence: 99%

Friction and wear behavior of electro-deposition Ni-cBN composite coatings

Gao¹,

Liu

Zhao

et al. 2015

Proceedings of the 2015 International Conference on Advanced Engineering Materials and Technology

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In this paper, Ni-cubic boron nitride (cBN) composite coating with different volume fractions (from 0.3 to 8.5 vol.% ) of cBN particle was successfully prepared by electro-deposition method on titanium alloy substrates. The effect of volume fraction of cBN particles and applied load on the friction and wear behaviors of the composite coatings were investigated at a speed of 0.0333 m·s -1. The experimental results indicate that the friction coefficient of the composite coatings decreased with increasing the volume fraction of cBN particles and the applied load. Moreover, within the range of volume fraction of cBN particles from 0 to 8.5%, the wear rate of the composite coatings showed a decreasing trend from 0.2417 to 0.0267 mg·m -1 with increasing volume of cBN particles. The wear rate of the composite coating increased with the increase of the applied load.

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Machining of high performance workpiece materials with CBN coated cutting tools

Cited by 43 publications

References 3 publications

Effect of shielding gas on the properties and microstructure of melted steel surface using a TIG torch

Effect of shielding gas on the properties and microstructure of melted steel surface using a TIG torch

Effect of Boron Nitride Coating on Wear Behavior of Carbide Cutting Tools in Milling of Inconel 718

Friction and wear behavior of electro-deposition Ni-cBN composite coatings

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