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Relevant bibliographies by topics / Polycrystalline cubic boron nitride

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Academic literature on the topic 'Polycrystalline cubic boron nitride'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 February 2022

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Journal articles on the topic "Polycrystalline cubic boron nitride"

1

Zhao, Mengxi, Zili Kou, Youjun Zhang, Bo Peng, Yipeng Wang, Zhiwei Wang, Xiaoshuang Yin, et al. "Superhard transparent polycrystalline cubic boron nitride." Applied Physics Letters 118, no. 15 (April 12, 2021): 151901. http://dx.doi.org/10.1063/5.0045545.

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Qin, Jiaqian, Norimasa Nishiyama, Hiroaki Ohfuji, Toru Shinmei, Li Lei, Duanwei He, and Tetsuo Irifune. "Polycrystalline γ-boron: As hard as polycrystalline cubic boron nitride." Scripta Materialia 67, no. 3 (August 2012): 257–60. http://dx.doi.org/10.1016/j.scriptamat.2012.04.032.

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Erasmus, R. M., J. D. Comins, and M. L. Fish. "Raman and photoluminescence spectra of indented cubic boron nitride and polycrystalline cubic boron nitride." Diamond and Related Materials 9, no. 3-6 (April 2000): 600–604. http://dx.doi.org/10.1016/s0925-9635(00)00241-7.

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4

Jia, Yun Hai, and Cheng Zhe Guan. "Research on Electrical Discharge Grinding of Polycrystalline Cubic Boron Nitride Cutting Tool." Applied Mechanics and Materials 668-669 (October 2014): 56–59. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.56.

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Electrical discharge grinding is part of the most widely used methods to machine polycrystalline cubic boron nitride cutting tool. Polycrystalline cubic boron nitride compact samples processed in domestic with different grain size are the research object. Electrode running speed, peak current, and pulse width are selected as the main process parameters. The material removal volume and electrode loss set as the evaluation index of productive efficiency; workpiece surface roughness value sets as an evaluation standard of processing quality. Through electrical discharge grinding experiments, combined with scanning electron microscopy observation, energy spectrum analyzer and roughness tester, the influences of the main process parameters on electrical discharge grinding are analyzed, polycrystalline cubic boron nitride compact electrical discharge grinding technics & mechanism are summarized.

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Carolan, D., A. Ivanković, and N. Murphy. "Thermal shock resistance of polycrystalline cubic boron nitride." Journal of the European Ceramic Society 32, no. 10 (August 2012): 2581–86. http://dx.doi.org/10.1016/j.jeurceramsoc.2012.03.013.

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Swab, Jeffrey J., Lionel Vargas-Gonzalez, Elizabeth Wilson, and Eric Warner. "Properties and Performance of Polycrystalline Cubic Boron Nitride." International Journal of Applied Ceramic Technology 12 (January 12, 2015): E74—E81. http://dx.doi.org/10.1111/ijac.12380.

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7

Yang, Ming, Zi-Li Kou, Teng Liu, Jing-Rui Lu, Fang-Ming Liu, Yin-Juan Liu, Lei Qi, et al. "Polycrystalline cubic boron nitride prepared with cubic-hexagonal boron nitride under high pressure and high temperature." Chinese Physics B 27, no. 5 (May 2018): 056105. http://dx.doi.org/10.1088/1674-1056/27/5/056105.

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Teeter, F. J. "Improved performance of polycrystalline cubic boron nitride through coating." Metal Powder Report 57, no. 6 (June 2002): 62. http://dx.doi.org/10.1016/s0026-0657(02)80300-9.

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Denkena, Berend, Alexander Krödel, Arnd Heckemeyer, and Marita Murrenhoff. "Pulsed laser micro ablation of polycrystalline cubic boron nitride." Procedia CIRP 94 (2020): 823–28. http://dx.doi.org/10.1016/j.procir.2020.09.116.

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Nakai, Tetsuo. "Application of Polycrystalline Cubic Boron Nitride for Cutting Tools." REVIEW OF HIGH PRESSURE SCIENCE AND TECHNOLOGY 3, no. 2 (1994): 118–25. http://dx.doi.org/10.4131/jshpreview.3.118.

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Dissertations / Theses on the topic "Polycrystalline cubic boron nitride"

1

Dawson, Ty Grant. "Machining hardened steel with polycrystalline cubic boron nitride cutting tools." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/17787.

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AbraÌƒo, Alexandre Mendes. "The machining of annealed and hardened steels using advanced ceramic cutting tools." Thesis, University of Birmingham, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249408.

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Cook, Grant O. III. "Joining Polycrystalline Cubic Boron Nitride and Tungsten Carbide by Partial Transient Liquid Phase Bonding." BYU ScholarsArchive, 2010. https://scholarsarchive.byu.edu/etd/2366.

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Friction stir welding (FSW) of steel is often performed with an insert made of polycrystalline cubic boron nitride (PCBN). Specifically, MS80 is a grade of PCBN made by Smith MegaDiamond that has been optimized for the FSW process. The PCBN insert is attached to a tungsten carbide (WC) shank by a compression fitting. However, FSW tools manufactured by this method inevitably fail by fracture in the PCBN. Permanently bonding PCBN to WC would likely solve the fracturing problem and increase the life of PCBN FSW tools to be economically viable. Partial transient liquid phase (PTLP) bonding, a process used to join ceramics with thin metallic interlayers, was proposed as a method to permanently bond PCBN to WC. PTLP bonding is often performed using three layers of pure elements. On heating, the two thin outer interlayers melt and bond to the ceramics. Concurrently, these liquid layers diffuse into the thicker refractory core until solidification has occurred isothermally. A procedure was developed to reduce the number of possible three-layer PTLP bonding setups to a small set of ideal setups using logical filters. Steps in this filtering method include a database of all existing binary systems, sessile drop testing of 20 elements, and a routine that calculates maximum interlayer thicknesses. Results of sessile drop testing showed that the PCBN grade required for this research could only be bonded with an alloy of Ti, Cu, Mg, and Sb. Two PTLP bond setups were tested using this special coating on the PCBN, but a successful bond could not be achieved. However, a PTLP bond of WC to WC was successful and proved the usefulness of the filtering procedure for determining PTLP bond setups. This filtering procedure is then set forth in generalized terms that can be used to PTLP bond any material. Also, recommendations for future research to bond this grade of PCBN, or some other grade, to WC are presented.

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Ng, Eu-Gene. "Modelling of the cutting process when machining hardened steel with polycrystalline cubic boron nitride(PCBN)tooling." Thesis, University of Birmingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.511485.

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Al-Watban, Ali. "The application of the soft impression technique to evaluate flow stress, creep and frictional deformation of polycrystalline diamond and cubic boron nitride." Thesis, University of Hull, 1996. http://hydra.hull.ac.uk/resources/hull:8054.

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Metal shaping processes are clear examples of engineering applications where a hard material is worn by a softer one - i.e. the tool and workpiece respectively. The soft impressor technique, introduced by Brookes and Green (1973), has proved valuable in measuring the relevant mechanical properties of tool materials - e.g. the measurement of the flow stress of diamond single crystals at temperatures up to 1500°C (Brookes, 1992). In this work, the technique has been extended further in order to form a basis for the comparison and evaluation of ultra-hard materials. Three main aspects of the performance of these tool materials have been covered: the effect of temperature on flow stress; cumulative deformation under point loading conditions; wear due to repeated traversals (fatigue). In the first part, the technique has been extended to determine the flow stress of polycrystalline diamond and cubic boron nitride as a function of temperature and a mathematical model has been proposed to estimate the flow stress in isotropic polycrystalline materials. This model was first analysed by Love (1928) and was used as the basis on which to identify the threshold pressure above which dislocation movement is initiated in diamond single crystals (Brookes et al (1990)). The applicability of this model for polycrystals was verified by correlating the yield strength of polycrystalline copper, measured in tension, with the determination of minimum contact mean pressure to plastically deform the same material. According to the model, the first evidence of plastic deformation should be observed at the contact periphery and this has been verified in this work. Consequently, using this approach, the effect of temperature on the flow stress of polycrystalline diamond (Syndax) and polycrystalline cubic boron nitride (Amborite) has been established and it is shown that there are three distinct regimes. In regime I, the deformation is brittle and fracture occurs above a given mean pressure; in regime II dislocations are mobile and the flow stress decreases sharply as the temperature rises; and in regime III the flow stress is independent of the temperature. In the earlier work, the brittle-ductile transition temperature (BOT) has been identified as that temperature where regime I ends and II begins. Above the BDT, time dependent plastic flow has been observed, in all of these materials, leading to a measurable increase in the size of the impression. However, this particular type of cumulative deformation, described as impression creep, is shown to be different to conventional creep as measured under uniaxial stress conditions. Finally, the room temperature friction and deformation of various polycrystalline diamond based specimens, Le. aggregates with a binder phase of cobalt (Syndite) or silicon carbide (Syndax), a polycrystalline coating produced by a chemical vapour deposition processes (CVDite) and cubic boron nitride (Amborite) were studied when softer metallic and ceramic sliders were used. As a result of increasing the number of traversals, significant wear of the CVDite diamond coating by softer metallic sliders (aluminium and mild steel) was observed. This could be attributed to the high level of residual stresses in the diamond layer which is thought to be due to the difference in the thermal expansion coefficients of the coatings and their substrates. Burton et al (1995) reported a strain of 0.3% on the surface of the diamond coating and hence the tensile stress on the upper side of the coating will be equivalent to about 3.0 GPa. This value is comparable to the theoretical cleavage strength of diamond. It is suggested an additional tensile stress, due to the sliding friction, could have caused cleavage of individual diamond crystals. The resultant wear debris then becoming embedded in the metallic slider. These embedded diamond particles in the tip of the slider could be responsible for the increased friction and wear.

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JAYASEELAN, VIDHYA SAGAR. "STUDY OF POLYCRYSTALLINE DIAMOND THIN FILMS GROWN IN A CUSTOM BUILT ECR PE-CVD SYSTEM." University of Cincinnati / OhioLINK, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=ucin975513169.

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Stradějová, Alena. "Supertvrdé řezné materiály a jejich efektivní využití." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228617.

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The master’s thesis is aimed at superhard cutting materials (polycrystalline diamond and polycrystalline cubic boron nitride) and their effective utilization. It describes the characteristics and production of these materials and evaluates product ranges of the most significant producers of tools and tool materials in given area. It further compares working conditions of selected world's producers which are related to the growing utilization of these materials in machining process. The thesis also deals with the cutting power of tools and provides a technical-economic assessment of the discussed issue.

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Vampola, Lukáš. "Supertvrdé materiály a jejich efektivní využití." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229434.

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Diploma thesis is focused on cutting superhard materials (polycrystalline diamond and polycrystalline cubic boron nitride). It deals with physical, mechanical and cutting properties, production and effective use. Evaluative product range of superhard cutting materials of the prominent world producers in terms of cutting conditions and type of materials machined in turning.

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Bourne, Robert W. "An optical study of cubic boron nitride." Thesis, University of Reading, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328531.

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Deyneka, Nataliya [Verfasser]. "Properties of nanocrystalline cubic boron nitride films / Nataliya Deyneka." Ulm : Universität Ulm. Fakultät für Naturwissenschaften, 2003. http://d-nb.info/1015354882/34.

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Books on the topic "Polycrystalline cubic boron nitride"

1

Ng, Eu-Gene. Modelling of the cutting process when machining hardened steel with polycrystalline cubic boron nitride (PCBN) tooling. Birmingham: University of Birmingham, 2001.

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2

The 2006-2011 World Outlook for Non-Metallic Cubic Boron Nitride Wheels. Icon Group International, Inc., 2005.

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3

Parker, Philip M. The 2007-2012 World Outlook for Non-Metallic Cubic Boron Nitride Wheels. ICON Group International, Inc., 2006.

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4

United States. National Aeronautics and Space Administration., ed. SURFACE CHEMISTRY, MICROSTRUCTURE, AND TRIBOLOGICAL PROPERTIES OF CUBIC BORON NITRIDE FILMS... NASA-TM-113163... APR. 7, 1998. [S.l: s.n., 1999.

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Book chapters on the topic "Polycrystalline cubic boron nitride"

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Wickramarachchi, Chandula, T. E. McLeay, S. Ayvar-Soberanis, W. Leahy, and E. J. Cross. "Tool Wear Inspection of Polycrystalline Cubic Boron Nitride Inserts." In Special Topics in Structural Dynamics, Volume 5, 259–66. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-75390-4_24.

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Abrão, A. M., D. K. Aspinwall, and M. L. H. Wise. "A Review of Polycrystalline Cubic Boron Nitride Cutting tool Developments and Application." In Proceedings of the Thirtieth International MATADOR Conference, 169–80. London: Macmillan Education UK, 1993. http://dx.doi.org/10.1007/978-1-349-13255-3_23.

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3

Jia, Yunhai, Shaoning Lv, and Lixin Zhu. "Technic Study on Polycrystalline Cubic Boron Nitride Tools Dry Cutting Harden GCr15 Based on the Finite Element Analysis and the Orthogonal Experiment." In Lecture Notes in Mechanical Engineering, 397–404. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0107-0_38.

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Freudenstein, Regine, and Wilhelm Kulisch. "Nanocrystalline Cubic Boron Nitride Films." In Functional Properties of Nanostructured Materials, 289–94. Dordrecht: Springer Netherlands, 2006. http://dx.doi.org/10.1007/1-4020-4594-8_20.

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Adachi, Sadao. "Cubic Boron Nitride (c-BN)." In Optical Constants of Crystalline and Amorphous Semiconductors, 119–26. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-5247-5_11.

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Bochko, A. V. "Superhard Composites of Cubic Boron Nitride." In Diamond Based Composites, 361–67. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5592-2_33.

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Ulrich, Sven, Eberhard Nold, Konrad Sell, Michael StÜber, Jian Ye, and Carlos Ziebert. "Nano-Scale, Multi-Functional, Cubic Boron Nitride Coatings." In Functional Properties of Nanostructured Materials, 275–88. Dordrecht: Springer Netherlands, 2006. http://dx.doi.org/10.1007/1-4020-4594-8_19.

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Taylor, Charles A., and Roy Clarke. "Growth Kinetics of Cubic Boron Nitride Films and Composites." In Diamond Based Composites, 63–113. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5592-2_6.

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Nose, Kenji, and Toyonobu Yoshida. "Plasma Processing of Nanocrystalline Semiconductive Cubic Boron Nitride Thin Films." In Industrial Plasma Technology, 315–34. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527629749.ch25.

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Shipilo, V. B., N. G. Anichenko, I. M. Starchenko, and E. M. Shishonok. "Composite Materials Based on Cubic Boron Nitride: Structure and Properties." In Diamond Based Composites, 121–26. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5592-2_8.

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Conference papers on the topic "Polycrystalline cubic boron nitride"

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Liu, L., G. P. Sun, and S. S. Xu. "Synthesis and Characterization of Polycrystalline Cubic Boron Nitride Composites with Al Binder." In 2015 International Conference on Electrical, Automation and Mechanical Engineering. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/eame-15.2015.78.

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2

Jia, Yunhai, and Jiangang Li. "Mechanism study on the wear of polycrystalline cubic boron nitride cutting tools." In Fourth International Seminar on Modern Cutting and Measuring Engineering, edited by Jiezhi Xin, Lianqing Zhu, and Zhongyu Wang. SPIE, 2010. http://dx.doi.org/10.1117/12.888646.

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Warhanek, Maximilian G., Josquin Pfaff, Linus Meier, Christian Walter, and Konrad Wegener. "Picosecond pulsed laser processing of polycrystalline diamond and cubic boron nitride composite materials." In SPIE LASE, edited by Udo Klotzbach, Kunihiko Washio, and Craig B. Arnold. SPIE, 2016. http://dx.doi.org/10.1117/12.2212771.

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Werschmoeller, Dirk, and Xiaochun Li. "Micro Thin Film Thermal Sensors Embedded Into Polycrystalline Cubic Boron Nitride (PCBN) for Advanced Machining Study." In ASME 2009 International Manufacturing Science and Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/msec2009-84332.

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Monitoring and control of thermomechanical parameters in tooling materials are imperative for improving the fundamental understanding, reliability and workpiece quality of material removal processes. Polycrystalline cubic boron nitride (PCBN) tools are being used heavily in machining of low carbon steel and superalloys. These processes are very sensitive to variation in local machining conditions and there lacks a thorough understanding of fundamental thermomechanical phenomena which can lead to abrupt tool failures. Existing sensors for monitoring machining conditions are not suitable for precision process control as they are either destructively embedded and/or do not possess the necessary spatial and temporal resolution to monitor temperature during machining effectively. This paper presents a novel approach to obtain temperature data from a close distance to the tool cutting edge. An array of 9 micro thin film thermocouples, fabricated using standard microfabrication methods, has been embedded into a PCBN cutting tool using a diffusion bonding technique. Scanning electron microscopy (SEM) was performed to examine material interactions at the bonding interface and determine optimal bonding parameters. The sensors were statically and dynamically characterized using a tube furnace and rapid laser heating, respectively. They exhibit good linearity, sensitivity and very fast response time. The instrumented PCBN inserts were applied in machining experiments. Being embedded into the tool at a total distance of only 260 μm from the cutting edge, the micro sensors enabled the detection of local cutting temperature changes caused by interrupted machining. The data obtained during cutting demonstrate the functionality of the tool-embedded micro thermal sensors and their value for fast, accurate and reliable monitoring and control of machining processes.

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Werschmoeller, Dirk, and Xiaochun Li. "Embedding of Micro Thin Film Sensors Into Polycrystaline Cubic Boron Nitride (PCBN) for Potential Tooling Applications Via Diffusion Bonding." In ASME 2008 International Manufacturing Science and Engineering Conference collocated with the 3rd JSME/ASME International Conference on Materials and Processing. ASMEDC, 2008. http://dx.doi.org/10.1115/msec_icmp2008-72504.

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Polycrystalline cubic boron nitride (PCBN) is increasingly being used in manufacturing processes to increase tool life and processing speed. Existing sensors in PCBN tools are unable to provide accurate time- and space-resolved measurements of the thermo-mechanical phenomena at and near the tool-work interface. Using microfabrication techniques along with diffusion bonding, thin film palladium-13wt% chromium (PdCr) alloy micro strain gage sensors were successfully embedded into PCBN structures for potential tooling applications. This article reports on the design, fabrication and characterization of a sensor consisting of three PdCr sensing elements embedded into a PCBN sample. The embedded sensors show good linearity and sensitivity.

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Ghosh, Ranajit, Zbigniew Zurecki, and John H. Frey. "Cryogenic Machining With Brittle Tools and Effects on Tool Life." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-42232.

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With the current popularity of finish hard turning, the need for improved productivity and tool life is of significant importance to manufacturers. The present work explores the effects of cryogenic coolants in machining hardened materials, from an industrial perspective, with emphasis on productivity and tool life improvement, environmental effects, as well as reliable performance characteristics for brittle tools. Both alumina ceramic (Al2O3) and polycrystalline cubic boron nitride (PCBN) tools show significant tool life improvement in cryomachining of hard ferrous materials, such as 52100 bearing steel and A2 tool steel. Significant productivity gains have also been observed in cryogenic machining of WC-Co rolls with polycrystalline diamond (PCD) tools. The enhanced performance of cryomachining is attributed to more efficient heat removal from the cutting insert, as well as reduction in thermal softening of the cutting tools at higher temperatures.

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Guha, Anshuman, Dirk Werschmoeller, and Xiaochun Li. "Wireless Acquisition of Temperature Data From PCBN Embedded Thin Film Sensors." In ASME 2010 International Manufacturing Science and Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/msec2010-34177.

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This paper presents the results of wireless data transmission experiments from micro thin film thermocouples (sensor) embedded into polycrystalline cubic boron nitride (PCBN) cutting inserts. A small wireless data acquisition system (DAQ) is necessary for sufficiently fast acquisition of experimental data from the embedded micro sensors in PCBN inserts, when mounted on a rotating cutting tool. For a wireless transfer of a low amplitude and high frequency thermal e analog signal, a signal conditioning circuit and wireless transmitting module are used. A Bluetooth transmitter module is used to establish communication with the receiver PC over serial port profile (SPP). To characterize the wireless data transfer system, heat signals are generated in stationary PCBN embedded thermocouples through laser pulses and CNC machining tests. During comparative tests, data was simultaneously acquired with a conventional wired DAQ board and the developed wireless DAQ system. The wireless DAQ capabilities and the overall dimensions of the devised wireless module greatly simplify its integration into various manufacturing applications.

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Steel, Russell, Colin Sterling, Tracy Nelson, and Scott Packer. "Friction Stir Welding in Pipeline Applications." In 2004 International Pipeline Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ipc2004-0164.

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Friction stir welding (FSW) is a relatively new joining process which has exhibited many advantages over traditional arc welding processes such as the elimination of solidification defects and reduced distortion. With the introduction of new tool material technology such as the use of polycrystalline cubic boron nitride, materials such as steels, stainless steels, and nickel base alloys have successfully been FSW. Though there are many advantages to friction stir welding, there has been very little work in applying the process to out of position welds, such as those found in pipelines. This study outlines the progression from linear friction stir welding to initial work consisting of the rotation of pipe coupons on a turn table and finally to the design of a portable FSW machine able to weld 305 mm (12 inches) diameter line pipe. A brief summary of FSW weld characteristics are given for API grades X65, X80, and X100 steels.

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Li, Linwen, Bin Li, Xiaochun Li, and Kornel F. Ehmann. "Experimental Investigation of Hard Turning Mechanisms by PCBN Tooling Embedded Micro Thin Film Thermocouples." In ASME 2012 International Manufacturing Science and Engineering Conference collocated with the 40th North American Manufacturing Research Conference and in participation with the International Conference on Tribology Materials and Processing. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/msec2012-7262.

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Temperature-distribution measurements in cutting tools during the machining process are extremely difficult and remain an unresolved problem. In this paper, cutting temperature distributions are measured by thin film thermocouples (TFTCs) embedded into Polycrystalline Cubic Boron Nitride (PCBN) cutting inserts in the immediate vicinity of the tool-chip interface. Using these measurements, steady and dynamic phenomena during hard turning as well as the chip morphology and formation process were analyzed based on the cutting temperature distributions in the insert. The relationship between the cutting temperature-field distributions in the PCBN insert and the segmented chip formation is analyzed using temperature-distribution mapping. It is shown that the temperature-distribution in the cutting zone depends on the shearing band distribution in the chip and the thermal transfer rate from the heat generation zone to the cutting tool. Furthermore, it became evident that the material flow stress and the shearing bands greatly affect not only the chip formation morphology but also the cutting temperature field distributions in the cutting zone of the cutting insert.

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Dlamini, Niniza S. P., Iakovos Sigalas, and Andreas Koursaris. "Cutting Tool Wear and Mechanisms of Chip Formation During High-Speed Machining of Compacted Graphite Iron." In ASME/STLE 2007 International Joint Tribology Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ijtc2007-44026.

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Cutting tool wear of polycrystalline cubic boron nitride (PcBN) tools was investigated in oblique turning experiments when machining compacted graphite iron at high cutting speeds, with the intention of elucidating the failure mechanisms of the cutting tools and presenting an analysis of the chip formation process. Dry finish turning experiments were conducted in a CNC lathe at cutting speeds in the range of 500–800m/min, at a feed rate of 0.05mm/rev and depth of cut of 0.2mm. Two different tool end-of-life criteria were used: a maximum flank wear scar size of 0.3mm (flank wear failure criterion) or loss of cutting edge due to rapid crater wear to a point where the cutting tool cannot machine with an acceptable surface finish (surface finish criterion). At high cutting speeds, the cutting tools failed prior to reaching the flank wear failure criterion due to rapid crater wear on the rake face of the cutting tools. Chip analysis, using SEM, revealed shear localized chips, with adiabatic shear bands produced in the primary and secondary shear zones.

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Reports on the topic "Polycrystalline cubic boron nitride"

1

Molian, Arul, Madhav Rao, and P. Molian. Laser Deposition of Cubic Boron Nitride on Electronic Materials. Fort Belvoir, VA: Defense Technical Information Center, July 1991. http://dx.doi.org/10.21236/ada238313.

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2

Tzeng, Yonhua, and Hongbin Zhu. Electron Assisted Deposition of Cubic Boron Nitride by RF Magnetron Sputtering. Fort Belvoir, VA: Defense Technical Information Center, April 1999. http://dx.doi.org/10.21236/ada362770.

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